[chore]: Bump github.com/spf13/viper from 1.13.0 to 1.14.0 (#1003)
Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.13.0 to 1.14.0. - [Release notes](https://github.com/spf13/viper/releases) - [Commits](https://github.com/spf13/viper/compare/v1.13.0...v1.14.0) --- updated-dependencies: - dependency-name: github.com/spf13/viper dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
This commit is contained in:
dependabot[bot]
GitHub
parent
a51da97e30
commit
be011b1641
8
go.mod
8
go.mod
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@ -37,7 +37,7 @@ require (
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github.com/robfig/cron/v3 v3.0.1
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github.com/russross/blackfriday/v2 v2.1.0
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github.com/spf13/cobra v1.6.1
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github.com/spf13/viper v1.13.0
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github.com/spf13/viper v1.14.0
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github.com/stretchr/testify v1.8.1
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github.com/superseriousbusiness/activity v1.2.1-gts
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github.com/superseriousbusiness/exif-terminator v0.4.0
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@ -50,8 +50,8 @@ require (
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github.com/wagslane/go-password-validator v0.3.0
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golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90
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golang.org/x/exp v0.0.0-20220613132600-b0d781184e0d
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golang.org/x/net v0.0.0-20221002022538-bcab6841153b
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golang.org/x/oauth2 v0.0.0-20220822191816-0ebed06d0094
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golang.org/x/net v0.0.0-20221014081412-f15817d10f9b
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golang.org/x/oauth2 v0.0.0-20221014153046-6fdb5e3db783
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golang.org/x/text v0.4.0
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gopkg.in/mcuadros/go-syslog.v2 v2.3.0
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modernc.org/sqlite v1.18.2
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@ -76,7 +76,7 @@ require (
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github.com/dsoprea/go-png-image-structure/v2 v2.0.0-20210512210324-29b889a6093d // indirect
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github.com/dsoprea/go-utility/v2 v2.0.0-20200717064901-2fccff4aa15e // indirect
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github.com/dustin/go-humanize v1.0.0 // indirect
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github.com/fsnotify/fsnotify v1.5.4 // indirect
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github.com/fsnotify/fsnotify v1.6.0 // indirect
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github.com/gin-contrib/sse v0.1.0 // indirect
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github.com/go-errors/errors v1.4.1 // indirect
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github.com/go-playground/locales v0.14.0 // indirect
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19
go.sum
19
go.sum
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@ -182,8 +182,9 @@ github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga
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github.com/frankban/quicktest v1.14.3 h1:FJKSZTDHjyhriyC81FLQ0LY93eSai0ZyR/ZIkd3ZUKE=
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github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
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github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
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github.com/fsnotify/fsnotify v1.5.4 h1:jRbGcIw6P2Meqdwuo0H1p6JVLbL5DHKAKlYndzMwVZI=
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github.com/fsnotify/fsnotify v1.5.4/go.mod h1:OVB6XrOHzAwXMpEM7uPOzcehqUV2UqJxmVXmkdnm1bU=
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github.com/fsnotify/fsnotify v1.6.0 h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=
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github.com/fsnotify/fsnotify v1.6.0/go.mod h1:sl3t1tCWJFWoRz9R8WJCbQihKKwmorjAbSClcnxKAGw=
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github.com/gavv/httpexpect v2.0.0+incompatible h1:1X9kcRshkSKEjNJJxX9Y9mQ5BRfbxU5kORdjhlA1yX8=
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github.com/gavv/httpexpect v2.0.0+incompatible/go.mod h1:x+9tiU1YnrOvnB725RkpoLv1M62hOWzwo5OXotisrKc=
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github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
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@ -283,8 +284,8 @@ github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
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github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
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github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
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github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
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github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
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github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
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github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
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@ -536,8 +537,8 @@ github.com/spf13/jwalterweatherman v1.1.0 h1:ue6voC5bR5F8YxI5S67j9i582FU4Qvo2bmq
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github.com/spf13/jwalterweatherman v1.1.0/go.mod h1:aNWZUN0dPAAO/Ljvb5BEdw96iTZ0EXowPYD95IqWIGo=
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github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
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github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
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github.com/spf13/viper v1.13.0 h1:BWSJ/M+f+3nmdz9bxB+bWX28kkALN2ok11D0rSo8EJU=
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github.com/spf13/viper v1.13.0/go.mod h1:Icm2xNL3/8uyh/wFuB1jI7TiTNKp8632Nwegu+zgdYw=
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github.com/spf13/viper v1.14.0 h1:Rg7d3Lo706X9tHsJMUjdiwMpHB7W8WnSVOssIY+JElU=
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github.com/spf13/viper v1.14.0/go.mod h1:WT//axPky3FdvXHzGw33dNdXXXfFQqmEalje+egj8As=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
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@ -760,8 +761,8 @@ golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4/go.mod h1:CfG3xpIq0wQ8r1q4Su
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golang.org/x/net v0.0.0-20220607020251-c690dde0001d/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
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golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
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golang.org/x/net v0.0.0-20220826154423-83b083e8dc8b/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
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golang.org/x/net v0.0.0-20221002022538-bcab6841153b h1:6e93nYa3hNqAvLr0pD4PN1fFS+gKzp2zAXqrnTCstqU=
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golang.org/x/net v0.0.0-20221002022538-bcab6841153b/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
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golang.org/x/net v0.0.0-20221014081412-f15817d10f9b h1:tvrvnPFcdzp294diPnrdZZZ8XUt2Tyj7svb7X52iDuU=
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golang.org/x/net v0.0.0-20221014081412-f15817d10f9b/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
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golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
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golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
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golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
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@ -782,8 +783,9 @@ golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b/go.mod h1:DAh4E804XQdzx2j
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golang.org/x/oauth2 v0.0.0-20220309155454-6242fa91716a/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
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golang.org/x/oauth2 v0.0.0-20220411215720-9780585627b5/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
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golang.org/x/oauth2 v0.0.0-20220608161450-d0670ef3b1eb/go.mod h1:jaDAt6Dkxork7LmZnYtzbRWj0W47D86a3TGe0YHBvmE=
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golang.org/x/oauth2 v0.0.0-20220822191816-0ebed06d0094 h1:2o1E+E8TpNLklK9nHiPiK1uzIYrIHt+cQx3ynCwq9V8=
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golang.org/x/oauth2 v0.0.0-20220822191816-0ebed06d0094/go.mod h1:h4gKUeWbJ4rQPri7E0u6Gs4e9Ri2zaLxzw5DI5XGrYg=
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golang.org/x/oauth2 v0.0.0-20221014153046-6fdb5e3db783 h1:nt+Q6cXKz4MosCSpnbMtqiQ8Oz0pxTef2B4Vca2lvfk=
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golang.org/x/oauth2 v0.0.0-20221014153046-6fdb5e3db783/go.mod h1:h4gKUeWbJ4rQPri7E0u6Gs4e9Ri2zaLxzw5DI5XGrYg=
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golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@ -796,7 +798,7 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ
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golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 h1:uVc8UZUe6tr40fFVnUP5Oj+veunVezqYl9z7DYw9xzw=
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golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
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golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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@ -875,6 +877,7 @@ golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e/go.mod h1:oPkhp1MJrh7nUepCBc
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golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
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golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
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golang.org/x/sys v0.0.0-20220908164124-27713097b956/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
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golang.org/x/sys v0.0.0-20220913120320-3275c407cedc h1:dpclq5m2YrqPGStKmtw7IcNbKLfbIqKXvNxDJKdIKYc=
|
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golang.org/x/sys v0.0.0-20220913120320-3275c407cedc/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
|
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golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
|
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|
|
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|
|
@ -1,6 +1,6 @@
|
|||
# Setup a Global .gitignore for OS and editor generated files:
|
||||
# https://help.github.com/articles/ignoring-files
|
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# git config --global core.excludesfile ~/.gitignore_global
|
||||
# go test -c output
|
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*.test
|
||||
*.test.exe
|
||||
|
||||
.vagrant
|
||||
*.sublime-project
|
||||
# Output of go build ./cmd/fsnotify
|
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/fsnotify
|
||||
|
|
|
|||
|
|
@ -1,62 +0,0 @@
|
|||
# Names should be added to this file as
|
||||
# Name or Organization <email address>
|
||||
# The email address is not required for organizations.
|
||||
|
||||
# You can update this list using the following command:
|
||||
#
|
||||
# $ (head -n10 AUTHORS && git shortlog -se | sed -E 's/^\s+[0-9]+\t//') | tee AUTHORS
|
||||
|
||||
# Please keep the list sorted.
|
||||
|
||||
Aaron L <aaron@bettercoder.net>
|
||||
Adrien Bustany <adrien@bustany.org>
|
||||
Alexey Kazakov <alkazako@redhat.com>
|
||||
Amit Krishnan <amit.krishnan@oracle.com>
|
||||
Anmol Sethi <me@anmol.io>
|
||||
Bjørn Erik Pedersen <bjorn.erik.pedersen@gmail.com>
|
||||
Brian Goff <cpuguy83@gmail.com>
|
||||
Bruno Bigras <bigras.bruno@gmail.com>
|
||||
Caleb Spare <cespare@gmail.com>
|
||||
Case Nelson <case@teammating.com>
|
||||
Chris Howey <howeyc@gmail.com>
|
||||
Christoffer Buchholz <christoffer.buchholz@gmail.com>
|
||||
Daniel Wagner-Hall <dawagner@gmail.com>
|
||||
Dave Cheney <dave@cheney.net>
|
||||
Eric Lin <linxiulei@gmail.com>
|
||||
Evan Phoenix <evan@fallingsnow.net>
|
||||
Francisco Souza <f@souza.cc>
|
||||
Gautam Dey <gautam.dey77@gmail.com>
|
||||
Hari haran <hariharan.uno@gmail.com>
|
||||
Ichinose Shogo <shogo82148@gmail.com>
|
||||
Johannes Ebke <johannes@ebke.org>
|
||||
John C Barstow <jbowtie@amathaine.com>
|
||||
Kelvin Fo <vmirage@gmail.com>
|
||||
Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
|
||||
Matt Layher <mdlayher@gmail.com>
|
||||
Matthias Stone <matthias@bellstone.ca>
|
||||
Nathan Youngman <git@nathany.com>
|
||||
Nickolai Zeldovich <nickolai@csail.mit.edu>
|
||||
Oliver Bristow <evilumbrella+github@gmail.com>
|
||||
Patrick <patrick@dropbox.com>
|
||||
Paul Hammond <paul@paulhammond.org>
|
||||
Pawel Knap <pawelknap88@gmail.com>
|
||||
Pieter Droogendijk <pieter@binky.org.uk>
|
||||
Pratik Shinde <pratikshinde320@gmail.com>
|
||||
Pursuit92 <JoshChase@techpursuit.net>
|
||||
Riku Voipio <riku.voipio@linaro.org>
|
||||
Rob Figueiredo <robfig@gmail.com>
|
||||
Rodrigo Chiossi <rodrigochiossi@gmail.com>
|
||||
Slawek Ligus <root@ooz.ie>
|
||||
Soge Zhang <zhssoge@gmail.com>
|
||||
Tiffany Jernigan <tiffany.jernigan@intel.com>
|
||||
Tilak Sharma <tilaks@google.com>
|
||||
Tobias Klauser <tobias.klauser@gmail.com>
|
||||
Tom Payne <twpayne@gmail.com>
|
||||
Travis Cline <travis.cline@gmail.com>
|
||||
Tudor Golubenco <tudor.g@gmail.com>
|
||||
Vahe Khachikyan <vahe@live.ca>
|
||||
Yukang <moorekang@gmail.com>
|
||||
bronze1man <bronze1man@gmail.com>
|
||||
debrando <denis.brandolini@gmail.com>
|
||||
henrikedwards <henrik.edwards@gmail.com>
|
||||
铁哥 <guotie.9@gmail.com>
|
||||
|
|
@ -7,6 +7,95 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
|
|||
|
||||
## [Unreleased]
|
||||
|
||||
Nothing yet.
|
||||
|
||||
## [1.6.0] - 2022-10-13
|
||||
|
||||
This version of fsnotify needs Go 1.16 (this was already the case since 1.5.1,
|
||||
but not documented). It also increases the minimum Linux version to 2.6.32.
|
||||
|
||||
### Additions
|
||||
|
||||
- all: add `Event.Has()` and `Op.Has()` ([#477])
|
||||
|
||||
This makes checking events a lot easier; for example:
|
||||
|
||||
if event.Op&Write == Write && !(event.Op&Remove == Remove) {
|
||||
}
|
||||
|
||||
Becomes:
|
||||
|
||||
if event.Has(Write) && !event.Has(Remove) {
|
||||
}
|
||||
|
||||
- all: add cmd/fsnotify ([#463])
|
||||
|
||||
A command-line utility for testing and some examples.
|
||||
|
||||
### Changes and fixes
|
||||
|
||||
- inotify: don't ignore events for files that don't exist ([#260], [#470])
|
||||
|
||||
Previously the inotify watcher would call `os.Lstat()` to check if a file
|
||||
still exists before emitting events.
|
||||
|
||||
This was inconsistent with other platforms and resulted in inconsistent event
|
||||
reporting (e.g. when a file is quickly removed and re-created), and generally
|
||||
a source of confusion. It was added in 2013 to fix a memory leak that no
|
||||
longer exists.
|
||||
|
||||
- all: return `ErrNonExistentWatch` when `Remove()` is called on a path that's
|
||||
not watched ([#460])
|
||||
|
||||
- inotify: replace epoll() with non-blocking inotify ([#434])
|
||||
|
||||
Non-blocking inotify was not generally available at the time this library was
|
||||
written in 2014, but now it is. As a result, the minimum Linux version is
|
||||
bumped from 2.6.27 to 2.6.32. This hugely simplifies the code and is faster.
|
||||
|
||||
- kqueue: don't check for events every 100ms ([#480])
|
||||
|
||||
The watcher would wake up every 100ms, even when there was nothing to do. Now
|
||||
it waits until there is something to do.
|
||||
|
||||
- macos: retry opening files on EINTR ([#475])
|
||||
|
||||
- kqueue: skip unreadable files ([#479])
|
||||
|
||||
kqueue requires a file descriptor for every file in a directory; this would
|
||||
fail if a file was unreadable by the current user. Now these files are simply
|
||||
skipped.
|
||||
|
||||
- windows: fix renaming a watched directory if the parent is also watched ([#370])
|
||||
|
||||
- windows: increase buffer size from 4K to 64K ([#485])
|
||||
|
||||
- windows: close file handle on Remove() ([#288])
|
||||
|
||||
- kqueue: put pathname in the error if watching a file fails ([#471])
|
||||
|
||||
- inotify, windows: calling Close() more than once could race ([#465])
|
||||
|
||||
- kqueue: improve Close() performance ([#233])
|
||||
|
||||
- all: various documentation additions and clarifications.
|
||||
|
||||
[#233]: https://github.com/fsnotify/fsnotify/pull/233
|
||||
[#260]: https://github.com/fsnotify/fsnotify/pull/260
|
||||
[#288]: https://github.com/fsnotify/fsnotify/pull/288
|
||||
[#370]: https://github.com/fsnotify/fsnotify/pull/370
|
||||
[#434]: https://github.com/fsnotify/fsnotify/pull/434
|
||||
[#460]: https://github.com/fsnotify/fsnotify/pull/460
|
||||
[#463]: https://github.com/fsnotify/fsnotify/pull/463
|
||||
[#465]: https://github.com/fsnotify/fsnotify/pull/465
|
||||
[#470]: https://github.com/fsnotify/fsnotify/pull/470
|
||||
[#471]: https://github.com/fsnotify/fsnotify/pull/471
|
||||
[#475]: https://github.com/fsnotify/fsnotify/pull/475
|
||||
[#477]: https://github.com/fsnotify/fsnotify/pull/477
|
||||
[#479]: https://github.com/fsnotify/fsnotify/pull/479
|
||||
[#480]: https://github.com/fsnotify/fsnotify/pull/480
|
||||
[#485]: https://github.com/fsnotify/fsnotify/pull/485
|
||||
|
||||
## [1.5.4] - 2022-04-25
|
||||
|
||||
* Windows: add missing defer to `Watcher.WatchList` [#447](https://github.com/fsnotify/fsnotify/pull/447)
|
||||
|
|
@ -40,6 +129,30 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
|
|||
[#385](https://github.com/fsnotify/fsnotify/pull/385)
|
||||
* Go 1.14+: Fix unsafe pointer conversion [#325](https://github.com/fsnotify/fsnotify/pull/325)
|
||||
|
||||
## [1.4.9] - 2020-03-11
|
||||
|
||||
* Move example usage to the readme #329. This may resolve #328.
|
||||
|
||||
## [1.4.8] - 2020-03-10
|
||||
|
||||
* CI: test more go versions (@nathany 1d13583d846ea9d66dcabbfefbfb9d8e6fb05216)
|
||||
* Tests: Queued inotify events could have been read by the test before max_queued_events was hit (@matthias-stone #265)
|
||||
* Tests: t.Fatalf -> t.Errorf in go routines (@gdey #266)
|
||||
* CI: Less verbosity (@nathany #267)
|
||||
* Tests: Darwin: Exchangedata is deprecated on 10.13 (@nathany #267)
|
||||
* Tests: Check if channels are closed in the example (@alexeykazakov #244)
|
||||
* CI: Only run golint on latest version of go and fix issues (@cpuguy83 #284)
|
||||
* CI: Add windows to travis matrix (@cpuguy83 #284)
|
||||
* Docs: Remover appveyor badge (@nathany 11844c0959f6fff69ba325d097fce35bd85a8e93)
|
||||
* Linux: create epoll and pipe fds with close-on-exec (@JohannesEbke #219)
|
||||
* Linux: open files with close-on-exec (@linxiulei #273)
|
||||
* Docs: Plan to support fanotify (@nathany ab058b44498e8b7566a799372a39d150d9ea0119 )
|
||||
* Project: Add go.mod (@nathany #309)
|
||||
* Project: Revise editor config (@nathany #309)
|
||||
* Project: Update copyright for 2019 (@nathany #309)
|
||||
* CI: Drop go1.8 from CI matrix (@nathany #309)
|
||||
* Docs: Updating the FAQ section for supportability with NFS & FUSE filesystems (@Pratik32 4bf2d1fec78374803a39307bfb8d340688f4f28e )
|
||||
|
||||
## [1.4.7] - 2018-01-09
|
||||
|
||||
* BSD/macOS: Fix possible deadlock on closing the watcher on kqueue (thanks @nhooyr and @glycerine)
|
||||
|
|
|
|||
|
|
@ -1,60 +1,26 @@
|
|||
# Contributing
|
||||
Thank you for your interest in contributing to fsnotify! We try to review and
|
||||
merge PRs in a reasonable timeframe, but please be aware that:
|
||||
|
||||
## Issues
|
||||
- To avoid "wasted" work, please discus changes on the issue tracker first. You
|
||||
can just send PRs, but they may end up being rejected for one reason or the
|
||||
other.
|
||||
|
||||
* Request features and report bugs using the [GitHub Issue Tracker](https://github.com/fsnotify/fsnotify/issues).
|
||||
* Please indicate the platform you are using fsnotify on.
|
||||
* A code example to reproduce the problem is appreciated.
|
||||
- fsnotify is a cross-platform library, and changes must work reasonably well on
|
||||
all supported platforms.
|
||||
|
||||
## Pull Requests
|
||||
- Changes will need to be compatible; old code should still compile, and the
|
||||
runtime behaviour can't change in ways that are likely to lead to problems for
|
||||
users.
|
||||
|
||||
### Contributor License Agreement
|
||||
Testing
|
||||
-------
|
||||
Just `go test ./...` runs all the tests; the CI runs this on all supported
|
||||
platforms. Testing different platforms locally can be done with something like
|
||||
[goon] or [Vagrant], but this isn't super-easy to set up at the moment.
|
||||
|
||||
fsnotify is derived from code in the [golang.org/x/exp](https://godoc.org/golang.org/x/exp) package and it may be included [in the standard library](https://github.com/fsnotify/fsnotify/issues/1) in the future. Therefore fsnotify carries the same [LICENSE](https://github.com/fsnotify/fsnotify/blob/master/LICENSE) as Go. Contributors retain their copyright, so you need to fill out a short form before we can accept your contribution: [Google Individual Contributor License Agreement](https://developers.google.com/open-source/cla/individual).
|
||||
Use the `-short` flag to make the "stress test" run faster.
|
||||
|
||||
Please indicate that you have signed the CLA in your pull request.
|
||||
|
||||
### How fsnotify is Developed
|
||||
|
||||
* Development is done on feature branches.
|
||||
* Tests are run on BSD, Linux, macOS and Windows.
|
||||
* Pull requests are reviewed and [applied to master][am] using [hub][].
|
||||
* Maintainers may modify or squash commits rather than asking contributors to.
|
||||
* To issue a new release, the maintainers will:
|
||||
* Update the CHANGELOG
|
||||
* Tag a version, which will become available through gopkg.in.
|
||||
|
||||
### How to Fork
|
||||
|
||||
For smooth sailing, always use the original import path. Installing with `go get` makes this easy.
|
||||
|
||||
1. Install from GitHub (`go get -u github.com/fsnotify/fsnotify`)
|
||||
2. Create your feature branch (`git checkout -b my-new-feature`)
|
||||
3. Ensure everything works and the tests pass (see below)
|
||||
4. Commit your changes (`git commit -am 'Add some feature'`)
|
||||
|
||||
Contribute upstream:
|
||||
|
||||
1. Fork fsnotify on GitHub
|
||||
2. Add your remote (`git remote add fork git@github.com:mycompany/repo.git`)
|
||||
3. Push to the branch (`git push fork my-new-feature`)
|
||||
4. Create a new Pull Request on GitHub
|
||||
|
||||
This workflow is [thoroughly explained by Katrina Owen](https://splice.com/blog/contributing-open-source-git-repositories-go/).
|
||||
|
||||
### Testing
|
||||
|
||||
fsnotify uses build tags to compile different code on Linux, BSD, macOS, and Windows.
|
||||
|
||||
Before doing a pull request, please do your best to test your changes on multiple platforms, and list which platforms you were able/unable to test on.
|
||||
|
||||
### Maintainers
|
||||
|
||||
Help maintaining fsnotify is welcome. To be a maintainer:
|
||||
|
||||
* Submit a pull request and sign the CLA as above.
|
||||
* You must be able to run the test suite on Mac, Windows, Linux and BSD.
|
||||
|
||||
All code changes should be internal pull requests.
|
||||
|
||||
Releases are tagged using [Semantic Versioning](http://semver.org/).
|
||||
[goon]: https://github.com/arp242/goon
|
||||
[Vagrant]: https://www.vagrantup.com/
|
||||
[integration_test.go]: /integration_test.go
|
||||
|
|
|
|||
|
|
@ -1,28 +1,25 @@
|
|||
Copyright (c) 2012 The Go Authors. All rights reserved.
|
||||
Copyright (c) 2012-2019 fsnotify Authors. All rights reserved.
|
||||
Copyright © 2012 The Go Authors. All rights reserved.
|
||||
Copyright © fsnotify Authors. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following disclaimer
|
||||
in the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
* Redistributions of source code must retain the above copyright notice, this
|
||||
list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright notice, this
|
||||
list of conditions and the following disclaimer in the documentation and/or
|
||||
other materials provided with the distribution.
|
||||
* Neither the name of Google Inc. nor the names of its contributors may be used
|
||||
to endorse or promote products derived from this software without specific
|
||||
prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
|
||||
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
||||
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
|
|
|||
|
|
@ -1,120 +1,161 @@
|
|||
# File system notifications for Go
|
||||
fsnotify is a Go library to provide cross-platform filesystem notifications on
|
||||
Windows, Linux, macOS, and BSD systems.
|
||||
|
||||
[](https://pkg.go.dev/github.com/fsnotify/fsnotify) [](https://goreportcard.com/report/github.com/fsnotify/fsnotify) [](https://github.com/fsnotify/fsnotify/issues/413)
|
||||
Go 1.16 or newer is required; the full documentation is at
|
||||
https://pkg.go.dev/github.com/fsnotify/fsnotify
|
||||
|
||||
fsnotify utilizes [`golang.org/x/sys`](https://pkg.go.dev/golang.org/x/sys) rather than [`syscall`](https://pkg.go.dev/syscall) from the standard library.
|
||||
**It's best to read the documentation at pkg.go.dev, as it's pinned to the last
|
||||
released version, whereas this README is for the last development version which
|
||||
may include additions/changes.**
|
||||
|
||||
Cross platform: Windows, Linux, BSD and macOS.
|
||||
---
|
||||
|
||||
| Adapter | OS | Status |
|
||||
| --------------------- | -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
|
||||
| inotify | Linux 2.6.27 or later, Android\* | Supported |
|
||||
| kqueue | BSD, macOS, iOS\* | Supported |
|
||||
| ReadDirectoryChangesW | Windows | Supported |
|
||||
| FSEvents | macOS | [Planned](https://github.com/fsnotify/fsnotify/issues/11) |
|
||||
| FEN | Solaris 11 | [In Progress](https://github.com/fsnotify/fsnotify/pull/371) |
|
||||
| fanotify | Linux 2.6.37+ | [Maybe](https://github.com/fsnotify/fsnotify/issues/114) |
|
||||
| USN Journals | Windows | [Maybe](https://github.com/fsnotify/fsnotify/issues/53) |
|
||||
| Polling | *All* | [Maybe](https://github.com/fsnotify/fsnotify/issues/9) |
|
||||
Platform support:
|
||||
|
||||
\* Android and iOS are untested.
|
||||
| Adapter | OS | Status |
|
||||
| --------------------- | ---------------| -------------------------------------------------------------|
|
||||
| inotify | Linux 2.6.32+ | Supported |
|
||||
| kqueue | BSD, macOS | Supported |
|
||||
| ReadDirectoryChangesW | Windows | Supported |
|
||||
| FSEvents | macOS | [Planned](https://github.com/fsnotify/fsnotify/issues/11) |
|
||||
| FEN | Solaris 11 | [In Progress](https://github.com/fsnotify/fsnotify/pull/371) |
|
||||
| fanotify | Linux 5.9+ | [Maybe](https://github.com/fsnotify/fsnotify/issues/114) |
|
||||
| USN Journals | Windows | [Maybe](https://github.com/fsnotify/fsnotify/issues/53) |
|
||||
| Polling | *All* | [Maybe](https://github.com/fsnotify/fsnotify/issues/9) |
|
||||
|
||||
Please see [the documentation](https://pkg.go.dev/github.com/fsnotify/fsnotify) and consult the [FAQ](#faq) for usage information.
|
||||
Linux and macOS should include Android and iOS, but these are currently untested.
|
||||
|
||||
## API stability
|
||||
|
||||
fsnotify is a fork of [howeyc/fsnotify](https://github.com/howeyc/fsnotify) with a new API as of v1.0. The API is based on [this design document](http://goo.gl/MrYxyA).
|
||||
|
||||
All [releases](https://github.com/fsnotify/fsnotify/releases) are tagged based on [Semantic Versioning](http://semver.org/).
|
||||
|
||||
## Usage
|
||||
Usage
|
||||
-----
|
||||
A basic example:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
"log"
|
||||
|
||||
"github.com/fsnotify/fsnotify"
|
||||
"github.com/fsnotify/fsnotify"
|
||||
)
|
||||
|
||||
func main() {
|
||||
watcher, err := fsnotify.NewWatcher()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
defer watcher.Close()
|
||||
// Create new watcher.
|
||||
watcher, err := fsnotify.NewWatcher()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
defer watcher.Close()
|
||||
|
||||
done := make(chan bool)
|
||||
go func() {
|
||||
for {
|
||||
select {
|
||||
case event, ok := <-watcher.Events:
|
||||
if !ok {
|
||||
return
|
||||
}
|
||||
log.Println("event:", event)
|
||||
if event.Op&fsnotify.Write == fsnotify.Write {
|
||||
log.Println("modified file:", event.Name)
|
||||
}
|
||||
case err, ok := <-watcher.Errors:
|
||||
if !ok {
|
||||
return
|
||||
}
|
||||
log.Println("error:", err)
|
||||
}
|
||||
}
|
||||
}()
|
||||
// Start listening for events.
|
||||
go func() {
|
||||
for {
|
||||
select {
|
||||
case event, ok := <-watcher.Events:
|
||||
if !ok {
|
||||
return
|
||||
}
|
||||
log.Println("event:", event)
|
||||
if event.Has(fsnotify.Write) {
|
||||
log.Println("modified file:", event.Name)
|
||||
}
|
||||
case err, ok := <-watcher.Errors:
|
||||
if !ok {
|
||||
return
|
||||
}
|
||||
log.Println("error:", err)
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
err = watcher.Add("/tmp/foo")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
<-done
|
||||
// Add a path.
|
||||
err = watcher.Add("/tmp")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Block main goroutine forever.
|
||||
<-make(chan struct{})
|
||||
}
|
||||
```
|
||||
|
||||
## Contributing
|
||||
Some more examples can be found in [cmd/fsnotify](cmd/fsnotify), which can be
|
||||
run with:
|
||||
|
||||
Please refer to [CONTRIBUTING][] before opening an issue or pull request.
|
||||
% go run ./cmd/fsnotify
|
||||
|
||||
## FAQ
|
||||
FAQ
|
||||
---
|
||||
### Will a file still be watched when it's moved to another directory?
|
||||
No, not unless you are watching the location it was moved to.
|
||||
|
||||
**When a file is moved to another directory is it still being watched?**
|
||||
### Are subdirectories watched too?
|
||||
No, you must add watches for any directory you want to watch (a recursive
|
||||
watcher is on the roadmap: [#18]).
|
||||
|
||||
No (it shouldn't be, unless you are watching where it was moved to).
|
||||
|
||||
**When I watch a directory, are all subdirectories watched as well?**
|
||||
|
||||
No, you must add watches for any directory you want to watch (a recursive watcher is on the roadmap [#18][]).
|
||||
|
||||
**Do I have to watch the Error and Event channels in a separate goroutine?**
|
||||
|
||||
As of now, yes. Looking into making this single-thread friendly (see [howeyc #7][#7])
|
||||
|
||||
**Why am I receiving multiple events for the same file on OS X?**
|
||||
|
||||
Spotlight indexing on OS X can result in multiple events (see [howeyc #62][#62]). A temporary workaround is to add your folder(s) to the *Spotlight Privacy settings* until we have a native FSEvents implementation (see [#11][]).
|
||||
|
||||
**How many files can be watched at once?**
|
||||
|
||||
There are OS-specific limits as to how many watches can be created:
|
||||
* Linux: /proc/sys/fs/inotify/max_user_watches contains the limit, reaching this limit results in a "no space left on device" error.
|
||||
* BSD / OSX: sysctl variables "kern.maxfiles" and "kern.maxfilesperproc", reaching these limits results in a "too many open files" error.
|
||||
|
||||
**Why don't notifications work with NFS filesystems or filesystem in userspace (FUSE)?**
|
||||
|
||||
fsnotify requires support from underlying OS to work. The current NFS protocol does not provide network level support for file notifications.
|
||||
|
||||
[#62]: https://github.com/howeyc/fsnotify/issues/62
|
||||
[#18]: https://github.com/fsnotify/fsnotify/issues/18
|
||||
|
||||
### Do I have to watch the Error and Event channels in a goroutine?
|
||||
As of now, yes (you can read both channels in the same goroutine using `select`,
|
||||
you don't need a separate goroutine for both channels; see the example).
|
||||
|
||||
### Why don't notifications work with NFS, SMB, FUSE, /proc, or /sys?
|
||||
fsnotify requires support from underlying OS to work. The current NFS and SMB
|
||||
protocols does not provide network level support for file notifications, and
|
||||
neither do the /proc and /sys virtual filesystems.
|
||||
|
||||
This could be fixed with a polling watcher ([#9]), but it's not yet implemented.
|
||||
|
||||
[#9]: https://github.com/fsnotify/fsnotify/issues/9
|
||||
|
||||
Platform-specific notes
|
||||
-----------------------
|
||||
### Linux
|
||||
When a file is removed a REMOVE event won't be emitted until all file
|
||||
descriptors are closed; it will emit a CHMOD instead:
|
||||
|
||||
fp := os.Open("file")
|
||||
os.Remove("file") // CHMOD
|
||||
fp.Close() // REMOVE
|
||||
|
||||
This is the event that inotify sends, so not much can be changed about this.
|
||||
|
||||
The `fs.inotify.max_user_watches` sysctl variable specifies the upper limit for
|
||||
the number of watches per user, and `fs.inotify.max_user_instances` specifies
|
||||
the maximum number of inotify instances per user. Every Watcher you create is an
|
||||
"instance", and every path you add is a "watch".
|
||||
|
||||
These are also exposed in `/proc` as `/proc/sys/fs/inotify/max_user_watches` and
|
||||
`/proc/sys/fs/inotify/max_user_instances`
|
||||
|
||||
To increase them you can use `sysctl` or write the value to proc file:
|
||||
|
||||
# The default values on Linux 5.18
|
||||
sysctl fs.inotify.max_user_watches=124983
|
||||
sysctl fs.inotify.max_user_instances=128
|
||||
|
||||
To make the changes persist on reboot edit `/etc/sysctl.conf` or
|
||||
`/usr/lib/sysctl.d/50-default.conf` (details differ per Linux distro; check your
|
||||
distro's documentation):
|
||||
|
||||
fs.inotify.max_user_watches=124983
|
||||
fs.inotify.max_user_instances=128
|
||||
|
||||
Reaching the limit will result in a "no space left on device" or "too many open
|
||||
files" error.
|
||||
|
||||
### kqueue (macOS, all BSD systems)
|
||||
kqueue requires opening a file descriptor for every file that's being watched;
|
||||
so if you're watching a directory with five files then that's six file
|
||||
descriptors. You will run in to your system's "max open files" limit faster on
|
||||
these platforms.
|
||||
|
||||
The sysctl variables `kern.maxfiles` and `kern.maxfilesperproc` can be used to
|
||||
control the maximum number of open files.
|
||||
|
||||
### macOS
|
||||
Spotlight indexing on macOS can result in multiple events (see [#15]). A temporary
|
||||
workaround is to add your folder(s) to the *Spotlight Privacy settings* until we
|
||||
have a native FSEvents implementation (see [#11]).
|
||||
|
||||
[#11]: https://github.com/fsnotify/fsnotify/issues/11
|
||||
[#7]: https://github.com/howeyc/fsnotify/issues/7
|
||||
|
||||
[contributing]: https://github.com/fsnotify/fsnotify/blob/master/CONTRIBUTING.md
|
||||
|
||||
## Related Projects
|
||||
|
||||
* [notify](https://github.com/rjeczalik/notify)
|
||||
* [fsevents](https://github.com/fsnotify/fsevents)
|
||||
|
||||
[#15]: https://github.com/fsnotify/fsnotify/issues/15
|
||||
|
|
|
|||
|
|
@ -0,0 +1,162 @@
|
|||
//go:build solaris
|
||||
// +build solaris
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"errors"
|
||||
)
|
||||
|
||||
// Watcher watches a set of paths, delivering events on a channel.
|
||||
//
|
||||
// A watcher should not be copied (e.g. pass it by pointer, rather than by
|
||||
// value).
|
||||
//
|
||||
// # Linux notes
|
||||
//
|
||||
// When a file is removed a Remove event won't be emitted until all file
|
||||
// descriptors are closed, and deletes will always emit a Chmod. For example:
|
||||
//
|
||||
// fp := os.Open("file")
|
||||
// os.Remove("file") // Triggers Chmod
|
||||
// fp.Close() // Triggers Remove
|
||||
//
|
||||
// This is the event that inotify sends, so not much can be changed about this.
|
||||
//
|
||||
// The fs.inotify.max_user_watches sysctl variable specifies the upper limit
|
||||
// for the number of watches per user, and fs.inotify.max_user_instances
|
||||
// specifies the maximum number of inotify instances per user. Every Watcher you
|
||||
// create is an "instance", and every path you add is a "watch".
|
||||
//
|
||||
// These are also exposed in /proc as /proc/sys/fs/inotify/max_user_watches and
|
||||
// /proc/sys/fs/inotify/max_user_instances
|
||||
//
|
||||
// To increase them you can use sysctl or write the value to the /proc file:
|
||||
//
|
||||
// # Default values on Linux 5.18
|
||||
// sysctl fs.inotify.max_user_watches=124983
|
||||
// sysctl fs.inotify.max_user_instances=128
|
||||
//
|
||||
// To make the changes persist on reboot edit /etc/sysctl.conf or
|
||||
// /usr/lib/sysctl.d/50-default.conf (details differ per Linux distro; check
|
||||
// your distro's documentation):
|
||||
//
|
||||
// fs.inotify.max_user_watches=124983
|
||||
// fs.inotify.max_user_instances=128
|
||||
//
|
||||
// Reaching the limit will result in a "no space left on device" or "too many open
|
||||
// files" error.
|
||||
//
|
||||
// # kqueue notes (macOS, BSD)
|
||||
//
|
||||
// kqueue requires opening a file descriptor for every file that's being watched;
|
||||
// so if you're watching a directory with five files then that's six file
|
||||
// descriptors. You will run in to your system's "max open files" limit faster on
|
||||
// these platforms.
|
||||
//
|
||||
// The sysctl variables kern.maxfiles and kern.maxfilesperproc can be used to
|
||||
// control the maximum number of open files, as well as /etc/login.conf on BSD
|
||||
// systems.
|
||||
//
|
||||
// # macOS notes
|
||||
//
|
||||
// Spotlight indexing on macOS can result in multiple events (see [#15]). A
|
||||
// temporary workaround is to add your folder(s) to the "Spotlight Privacy
|
||||
// Settings" until we have a native FSEvents implementation (see [#11]).
|
||||
//
|
||||
// [#11]: https://github.com/fsnotify/fsnotify/issues/11
|
||||
// [#15]: https://github.com/fsnotify/fsnotify/issues/15
|
||||
type Watcher struct {
|
||||
// Events sends the filesystem change events.
|
||||
//
|
||||
// fsnotify can send the following events; a "path" here can refer to a
|
||||
// file, directory, symbolic link, or special file like a FIFO.
|
||||
//
|
||||
// fsnotify.Create A new path was created; this may be followed by one
|
||||
// or more Write events if data also gets written to a
|
||||
// file.
|
||||
//
|
||||
// fsnotify.Remove A path was removed.
|
||||
//
|
||||
// fsnotify.Rename A path was renamed. A rename is always sent with the
|
||||
// old path as Event.Name, and a Create event will be
|
||||
// sent with the new name. Renames are only sent for
|
||||
// paths that are currently watched; e.g. moving an
|
||||
// unmonitored file into a monitored directory will
|
||||
// show up as just a Create. Similarly, renaming a file
|
||||
// to outside a monitored directory will show up as
|
||||
// only a Rename.
|
||||
//
|
||||
// fsnotify.Write A file or named pipe was written to. A Truncate will
|
||||
// also trigger a Write. A single "write action"
|
||||
// initiated by the user may show up as one or multiple
|
||||
// writes, depending on when the system syncs things to
|
||||
// disk. For example when compiling a large Go program
|
||||
// you may get hundreds of Write events, so you
|
||||
// probably want to wait until you've stopped receiving
|
||||
// them (see the dedup example in cmd/fsnotify).
|
||||
//
|
||||
// fsnotify.Chmod Attributes were changed. On Linux this is also sent
|
||||
// when a file is removed (or more accurately, when a
|
||||
// link to an inode is removed). On kqueue it's sent
|
||||
// and on kqueue when a file is truncated. On Windows
|
||||
// it's never sent.
|
||||
Events chan Event
|
||||
|
||||
// Errors sends any errors.
|
||||
Errors chan error
|
||||
}
|
||||
|
||||
// NewWatcher creates a new Watcher.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
return nil, errors.New("FEN based watcher not yet supported for fsnotify\n")
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Add starts monitoring the path for changes.
|
||||
//
|
||||
// A path can only be watched once; attempting to watch it more than once will
|
||||
// return an error. Paths that do not yet exist on the filesystem cannot be
|
||||
// added. A watch will be automatically removed if the path is deleted.
|
||||
//
|
||||
// A path will remain watched if it gets renamed to somewhere else on the same
|
||||
// filesystem, but the monitor will get removed if the path gets deleted and
|
||||
// re-created, or if it's moved to a different filesystem.
|
||||
//
|
||||
// Notifications on network filesystems (NFS, SMB, FUSE, etc.) or special
|
||||
// filesystems (/proc, /sys, etc.) generally don't work.
|
||||
//
|
||||
// # Watching directories
|
||||
//
|
||||
// All files in a directory are monitored, including new files that are created
|
||||
// after the watcher is started. Subdirectories are not watched (i.e. it's
|
||||
// non-recursive).
|
||||
//
|
||||
// # Watching files
|
||||
//
|
||||
// Watching individual files (rather than directories) is generally not
|
||||
// recommended as many tools update files atomically. Instead of "just" writing
|
||||
// to the file a temporary file will be written to first, and if successful the
|
||||
// temporary file is moved to to destination removing the original, or some
|
||||
// variant thereof. The watcher on the original file is now lost, as it no
|
||||
// longer exists.
|
||||
//
|
||||
// Instead, watch the parent directory and use Event.Name to filter out files
|
||||
// you're not interested in. There is an example of this in [cmd/fsnotify/file.go].
|
||||
func (w *Watcher) Add(name string) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Remove stops monitoring the path for changes.
|
||||
//
|
||||
// Directories are always removed non-recursively. For example, if you added
|
||||
// /tmp/dir and /tmp/dir/subdir then you will need to remove both.
|
||||
//
|
||||
// Removing a path that has not yet been added returns [ErrNonExistentWatch].
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,459 @@
|
|||
//go:build linux
|
||||
// +build linux
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strings"
|
||||
"sync"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// Watcher watches a set of paths, delivering events on a channel.
|
||||
//
|
||||
// A watcher should not be copied (e.g. pass it by pointer, rather than by
|
||||
// value).
|
||||
//
|
||||
// # Linux notes
|
||||
//
|
||||
// When a file is removed a Remove event won't be emitted until all file
|
||||
// descriptors are closed, and deletes will always emit a Chmod. For example:
|
||||
//
|
||||
// fp := os.Open("file")
|
||||
// os.Remove("file") // Triggers Chmod
|
||||
// fp.Close() // Triggers Remove
|
||||
//
|
||||
// This is the event that inotify sends, so not much can be changed about this.
|
||||
//
|
||||
// The fs.inotify.max_user_watches sysctl variable specifies the upper limit
|
||||
// for the number of watches per user, and fs.inotify.max_user_instances
|
||||
// specifies the maximum number of inotify instances per user. Every Watcher you
|
||||
// create is an "instance", and every path you add is a "watch".
|
||||
//
|
||||
// These are also exposed in /proc as /proc/sys/fs/inotify/max_user_watches and
|
||||
// /proc/sys/fs/inotify/max_user_instances
|
||||
//
|
||||
// To increase them you can use sysctl or write the value to the /proc file:
|
||||
//
|
||||
// # Default values on Linux 5.18
|
||||
// sysctl fs.inotify.max_user_watches=124983
|
||||
// sysctl fs.inotify.max_user_instances=128
|
||||
//
|
||||
// To make the changes persist on reboot edit /etc/sysctl.conf or
|
||||
// /usr/lib/sysctl.d/50-default.conf (details differ per Linux distro; check
|
||||
// your distro's documentation):
|
||||
//
|
||||
// fs.inotify.max_user_watches=124983
|
||||
// fs.inotify.max_user_instances=128
|
||||
//
|
||||
// Reaching the limit will result in a "no space left on device" or "too many open
|
||||
// files" error.
|
||||
//
|
||||
// # kqueue notes (macOS, BSD)
|
||||
//
|
||||
// kqueue requires opening a file descriptor for every file that's being watched;
|
||||
// so if you're watching a directory with five files then that's six file
|
||||
// descriptors. You will run in to your system's "max open files" limit faster on
|
||||
// these platforms.
|
||||
//
|
||||
// The sysctl variables kern.maxfiles and kern.maxfilesperproc can be used to
|
||||
// control the maximum number of open files, as well as /etc/login.conf on BSD
|
||||
// systems.
|
||||
//
|
||||
// # macOS notes
|
||||
//
|
||||
// Spotlight indexing on macOS can result in multiple events (see [#15]). A
|
||||
// temporary workaround is to add your folder(s) to the "Spotlight Privacy
|
||||
// Settings" until we have a native FSEvents implementation (see [#11]).
|
||||
//
|
||||
// [#11]: https://github.com/fsnotify/fsnotify/issues/11
|
||||
// [#15]: https://github.com/fsnotify/fsnotify/issues/15
|
||||
type Watcher struct {
|
||||
// Events sends the filesystem change events.
|
||||
//
|
||||
// fsnotify can send the following events; a "path" here can refer to a
|
||||
// file, directory, symbolic link, or special file like a FIFO.
|
||||
//
|
||||
// fsnotify.Create A new path was created; this may be followed by one
|
||||
// or more Write events if data also gets written to a
|
||||
// file.
|
||||
//
|
||||
// fsnotify.Remove A path was removed.
|
||||
//
|
||||
// fsnotify.Rename A path was renamed. A rename is always sent with the
|
||||
// old path as Event.Name, and a Create event will be
|
||||
// sent with the new name. Renames are only sent for
|
||||
// paths that are currently watched; e.g. moving an
|
||||
// unmonitored file into a monitored directory will
|
||||
// show up as just a Create. Similarly, renaming a file
|
||||
// to outside a monitored directory will show up as
|
||||
// only a Rename.
|
||||
//
|
||||
// fsnotify.Write A file or named pipe was written to. A Truncate will
|
||||
// also trigger a Write. A single "write action"
|
||||
// initiated by the user may show up as one or multiple
|
||||
// writes, depending on when the system syncs things to
|
||||
// disk. For example when compiling a large Go program
|
||||
// you may get hundreds of Write events, so you
|
||||
// probably want to wait until you've stopped receiving
|
||||
// them (see the dedup example in cmd/fsnotify).
|
||||
//
|
||||
// fsnotify.Chmod Attributes were changed. On Linux this is also sent
|
||||
// when a file is removed (or more accurately, when a
|
||||
// link to an inode is removed). On kqueue it's sent
|
||||
// and on kqueue when a file is truncated. On Windows
|
||||
// it's never sent.
|
||||
Events chan Event
|
||||
|
||||
// Errors sends any errors.
|
||||
Errors chan error
|
||||
|
||||
// Store fd here as os.File.Read() will no longer return on close after
|
||||
// calling Fd(). See: https://github.com/golang/go/issues/26439
|
||||
fd int
|
||||
mu sync.Mutex // Map access
|
||||
inotifyFile *os.File
|
||||
watches map[string]*watch // Map of inotify watches (key: path)
|
||||
paths map[int]string // Map of watched paths (key: watch descriptor)
|
||||
done chan struct{} // Channel for sending a "quit message" to the reader goroutine
|
||||
doneResp chan struct{} // Channel to respond to Close
|
||||
}
|
||||
|
||||
// NewWatcher creates a new Watcher.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
// Create inotify fd
|
||||
// Need to set the FD to nonblocking mode in order for SetDeadline methods to work
|
||||
// Otherwise, blocking i/o operations won't terminate on close
|
||||
fd, errno := unix.InotifyInit1(unix.IN_CLOEXEC | unix.IN_NONBLOCK)
|
||||
if fd == -1 {
|
||||
return nil, errno
|
||||
}
|
||||
|
||||
w := &Watcher{
|
||||
fd: fd,
|
||||
inotifyFile: os.NewFile(uintptr(fd), ""),
|
||||
watches: make(map[string]*watch),
|
||||
paths: make(map[int]string),
|
||||
Events: make(chan Event),
|
||||
Errors: make(chan error),
|
||||
done: make(chan struct{}),
|
||||
doneResp: make(chan struct{}),
|
||||
}
|
||||
|
||||
go w.readEvents()
|
||||
return w, nil
|
||||
}
|
||||
|
||||
// Returns true if the event was sent, or false if watcher is closed.
|
||||
func (w *Watcher) sendEvent(e Event) bool {
|
||||
select {
|
||||
case w.Events <- e:
|
||||
return true
|
||||
case <-w.done:
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Returns true if the error was sent, or false if watcher is closed.
|
||||
func (w *Watcher) sendError(err error) bool {
|
||||
select {
|
||||
case w.Errors <- err:
|
||||
return true
|
||||
case <-w.done:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
func (w *Watcher) isClosed() bool {
|
||||
select {
|
||||
case <-w.done:
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
w.mu.Lock()
|
||||
if w.isClosed() {
|
||||
w.mu.Unlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
// Send 'close' signal to goroutine, and set the Watcher to closed.
|
||||
close(w.done)
|
||||
w.mu.Unlock()
|
||||
|
||||
// Causes any blocking reads to return with an error, provided the file
|
||||
// still supports deadline operations.
|
||||
err := w.inotifyFile.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Wait for goroutine to close
|
||||
<-w.doneResp
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Add starts monitoring the path for changes.
|
||||
//
|
||||
// A path can only be watched once; attempting to watch it more than once will
|
||||
// return an error. Paths that do not yet exist on the filesystem cannot be
|
||||
// added. A watch will be automatically removed if the path is deleted.
|
||||
//
|
||||
// A path will remain watched if it gets renamed to somewhere else on the same
|
||||
// filesystem, but the monitor will get removed if the path gets deleted and
|
||||
// re-created, or if it's moved to a different filesystem.
|
||||
//
|
||||
// Notifications on network filesystems (NFS, SMB, FUSE, etc.) or special
|
||||
// filesystems (/proc, /sys, etc.) generally don't work.
|
||||
//
|
||||
// # Watching directories
|
||||
//
|
||||
// All files in a directory are monitored, including new files that are created
|
||||
// after the watcher is started. Subdirectories are not watched (i.e. it's
|
||||
// non-recursive).
|
||||
//
|
||||
// # Watching files
|
||||
//
|
||||
// Watching individual files (rather than directories) is generally not
|
||||
// recommended as many tools update files atomically. Instead of "just" writing
|
||||
// to the file a temporary file will be written to first, and if successful the
|
||||
// temporary file is moved to to destination removing the original, or some
|
||||
// variant thereof. The watcher on the original file is now lost, as it no
|
||||
// longer exists.
|
||||
//
|
||||
// Instead, watch the parent directory and use Event.Name to filter out files
|
||||
// you're not interested in. There is an example of this in [cmd/fsnotify/file.go].
|
||||
func (w *Watcher) Add(name string) error {
|
||||
name = filepath.Clean(name)
|
||||
if w.isClosed() {
|
||||
return errors.New("inotify instance already closed")
|
||||
}
|
||||
|
||||
var flags uint32 = unix.IN_MOVED_TO | unix.IN_MOVED_FROM |
|
||||
unix.IN_CREATE | unix.IN_ATTRIB | unix.IN_MODIFY |
|
||||
unix.IN_MOVE_SELF | unix.IN_DELETE | unix.IN_DELETE_SELF
|
||||
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
watchEntry := w.watches[name]
|
||||
if watchEntry != nil {
|
||||
flags |= watchEntry.flags | unix.IN_MASK_ADD
|
||||
}
|
||||
wd, errno := unix.InotifyAddWatch(w.fd, name, flags)
|
||||
if wd == -1 {
|
||||
return errno
|
||||
}
|
||||
|
||||
if watchEntry == nil {
|
||||
w.watches[name] = &watch{wd: uint32(wd), flags: flags}
|
||||
w.paths[wd] = name
|
||||
} else {
|
||||
watchEntry.wd = uint32(wd)
|
||||
watchEntry.flags = flags
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Remove stops monitoring the path for changes.
|
||||
//
|
||||
// Directories are always removed non-recursively. For example, if you added
|
||||
// /tmp/dir and /tmp/dir/subdir then you will need to remove both.
|
||||
//
|
||||
// Removing a path that has not yet been added returns [ErrNonExistentWatch].
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
name = filepath.Clean(name)
|
||||
|
||||
// Fetch the watch.
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
watch, ok := w.watches[name]
|
||||
|
||||
// Remove it from inotify.
|
||||
if !ok {
|
||||
return fmt.Errorf("%w: %s", ErrNonExistentWatch, name)
|
||||
}
|
||||
|
||||
// We successfully removed the watch if InotifyRmWatch doesn't return an
|
||||
// error, we need to clean up our internal state to ensure it matches
|
||||
// inotify's kernel state.
|
||||
delete(w.paths, int(watch.wd))
|
||||
delete(w.watches, name)
|
||||
|
||||
// inotify_rm_watch will return EINVAL if the file has been deleted;
|
||||
// the inotify will already have been removed.
|
||||
// watches and pathes are deleted in ignoreLinux() implicitly and asynchronously
|
||||
// by calling inotify_rm_watch() below. e.g. readEvents() goroutine receives IN_IGNORE
|
||||
// so that EINVAL means that the wd is being rm_watch()ed or its file removed
|
||||
// by another thread and we have not received IN_IGNORE event.
|
||||
success, errno := unix.InotifyRmWatch(w.fd, watch.wd)
|
||||
if success == -1 {
|
||||
// TODO: Perhaps it's not helpful to return an error here in every case;
|
||||
// The only two possible errors are:
|
||||
//
|
||||
// - EBADF, which happens when w.fd is not a valid file descriptor
|
||||
// of any kind.
|
||||
// - EINVAL, which is when fd is not an inotify descriptor or wd
|
||||
// is not a valid watch descriptor. Watch descriptors are
|
||||
// invalidated when they are removed explicitly or implicitly;
|
||||
// explicitly by inotify_rm_watch, implicitly when the file they
|
||||
// are watching is deleted.
|
||||
return errno
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// WatchList returns all paths added with [Add] (and are not yet removed).
|
||||
func (w *Watcher) WatchList() []string {
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
|
||||
entries := make([]string, 0, len(w.watches))
|
||||
for pathname := range w.watches {
|
||||
entries = append(entries, pathname)
|
||||
}
|
||||
|
||||
return entries
|
||||
}
|
||||
|
||||
type watch struct {
|
||||
wd uint32 // Watch descriptor (as returned by the inotify_add_watch() syscall)
|
||||
flags uint32 // inotify flags of this watch (see inotify(7) for the list of valid flags)
|
||||
}
|
||||
|
||||
// readEvents reads from the inotify file descriptor, converts the
|
||||
// received events into Event objects and sends them via the Events channel
|
||||
func (w *Watcher) readEvents() {
|
||||
defer func() {
|
||||
close(w.doneResp)
|
||||
close(w.Errors)
|
||||
close(w.Events)
|
||||
}()
|
||||
|
||||
var (
|
||||
buf [unix.SizeofInotifyEvent * 4096]byte // Buffer for a maximum of 4096 raw events
|
||||
errno error // Syscall errno
|
||||
)
|
||||
for {
|
||||
// See if we have been closed.
|
||||
if w.isClosed() {
|
||||
return
|
||||
}
|
||||
|
||||
n, err := w.inotifyFile.Read(buf[:])
|
||||
switch {
|
||||
case errors.Unwrap(err) == os.ErrClosed:
|
||||
return
|
||||
case err != nil:
|
||||
if !w.sendError(err) {
|
||||
return
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
if n < unix.SizeofInotifyEvent {
|
||||
var err error
|
||||
if n == 0 {
|
||||
// If EOF is received. This should really never happen.
|
||||
err = io.EOF
|
||||
} else if n < 0 {
|
||||
// If an error occurred while reading.
|
||||
err = errno
|
||||
} else {
|
||||
// Read was too short.
|
||||
err = errors.New("notify: short read in readEvents()")
|
||||
}
|
||||
if !w.sendError(err) {
|
||||
return
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
var offset uint32
|
||||
// We don't know how many events we just read into the buffer
|
||||
// While the offset points to at least one whole event...
|
||||
for offset <= uint32(n-unix.SizeofInotifyEvent) {
|
||||
var (
|
||||
// Point "raw" to the event in the buffer
|
||||
raw = (*unix.InotifyEvent)(unsafe.Pointer(&buf[offset]))
|
||||
mask = uint32(raw.Mask)
|
||||
nameLen = uint32(raw.Len)
|
||||
)
|
||||
|
||||
if mask&unix.IN_Q_OVERFLOW != 0 {
|
||||
if !w.sendError(ErrEventOverflow) {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// If the event happened to the watched directory or the watched file, the kernel
|
||||
// doesn't append the filename to the event, but we would like to always fill the
|
||||
// the "Name" field with a valid filename. We retrieve the path of the watch from
|
||||
// the "paths" map.
|
||||
w.mu.Lock()
|
||||
name, ok := w.paths[int(raw.Wd)]
|
||||
// IN_DELETE_SELF occurs when the file/directory being watched is removed.
|
||||
// This is a sign to clean up the maps, otherwise we are no longer in sync
|
||||
// with the inotify kernel state which has already deleted the watch
|
||||
// automatically.
|
||||
if ok && mask&unix.IN_DELETE_SELF == unix.IN_DELETE_SELF {
|
||||
delete(w.paths, int(raw.Wd))
|
||||
delete(w.watches, name)
|
||||
}
|
||||
w.mu.Unlock()
|
||||
|
||||
if nameLen > 0 {
|
||||
// Point "bytes" at the first byte of the filename
|
||||
bytes := (*[unix.PathMax]byte)(unsafe.Pointer(&buf[offset+unix.SizeofInotifyEvent]))[:nameLen:nameLen]
|
||||
// The filename is padded with NULL bytes. TrimRight() gets rid of those.
|
||||
name += "/" + strings.TrimRight(string(bytes[0:nameLen]), "\000")
|
||||
}
|
||||
|
||||
event := w.newEvent(name, mask)
|
||||
|
||||
// Send the events that are not ignored on the events channel
|
||||
if mask&unix.IN_IGNORED == 0 {
|
||||
if !w.sendEvent(event) {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// Move to the next event in the buffer
|
||||
offset += unix.SizeofInotifyEvent + nameLen
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// newEvent returns an platform-independent Event based on an inotify mask.
|
||||
func (w *Watcher) newEvent(name string, mask uint32) Event {
|
||||
e := Event{Name: name}
|
||||
if mask&unix.IN_CREATE == unix.IN_CREATE || mask&unix.IN_MOVED_TO == unix.IN_MOVED_TO {
|
||||
e.Op |= Create
|
||||
}
|
||||
if mask&unix.IN_DELETE_SELF == unix.IN_DELETE_SELF || mask&unix.IN_DELETE == unix.IN_DELETE {
|
||||
e.Op |= Remove
|
||||
}
|
||||
if mask&unix.IN_MODIFY == unix.IN_MODIFY {
|
||||
e.Op |= Write
|
||||
}
|
||||
if mask&unix.IN_MOVE_SELF == unix.IN_MOVE_SELF || mask&unix.IN_MOVED_FROM == unix.IN_MOVED_FROM {
|
||||
e.Op |= Rename
|
||||
}
|
||||
if mask&unix.IN_ATTRIB == unix.IN_ATTRIB {
|
||||
e.Op |= Chmod
|
||||
}
|
||||
return e
|
||||
}
|
||||
|
|
@ -0,0 +1,707 @@
|
|||
//go:build freebsd || openbsd || netbsd || dragonfly || darwin
|
||||
// +build freebsd openbsd netbsd dragonfly darwin
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"sync"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// Watcher watches a set of paths, delivering events on a channel.
|
||||
//
|
||||
// A watcher should not be copied (e.g. pass it by pointer, rather than by
|
||||
// value).
|
||||
//
|
||||
// # Linux notes
|
||||
//
|
||||
// When a file is removed a Remove event won't be emitted until all file
|
||||
// descriptors are closed, and deletes will always emit a Chmod. For example:
|
||||
//
|
||||
// fp := os.Open("file")
|
||||
// os.Remove("file") // Triggers Chmod
|
||||
// fp.Close() // Triggers Remove
|
||||
//
|
||||
// This is the event that inotify sends, so not much can be changed about this.
|
||||
//
|
||||
// The fs.inotify.max_user_watches sysctl variable specifies the upper limit
|
||||
// for the number of watches per user, and fs.inotify.max_user_instances
|
||||
// specifies the maximum number of inotify instances per user. Every Watcher you
|
||||
// create is an "instance", and every path you add is a "watch".
|
||||
//
|
||||
// These are also exposed in /proc as /proc/sys/fs/inotify/max_user_watches and
|
||||
// /proc/sys/fs/inotify/max_user_instances
|
||||
//
|
||||
// To increase them you can use sysctl or write the value to the /proc file:
|
||||
//
|
||||
// # Default values on Linux 5.18
|
||||
// sysctl fs.inotify.max_user_watches=124983
|
||||
// sysctl fs.inotify.max_user_instances=128
|
||||
//
|
||||
// To make the changes persist on reboot edit /etc/sysctl.conf or
|
||||
// /usr/lib/sysctl.d/50-default.conf (details differ per Linux distro; check
|
||||
// your distro's documentation):
|
||||
//
|
||||
// fs.inotify.max_user_watches=124983
|
||||
// fs.inotify.max_user_instances=128
|
||||
//
|
||||
// Reaching the limit will result in a "no space left on device" or "too many open
|
||||
// files" error.
|
||||
//
|
||||
// # kqueue notes (macOS, BSD)
|
||||
//
|
||||
// kqueue requires opening a file descriptor for every file that's being watched;
|
||||
// so if you're watching a directory with five files then that's six file
|
||||
// descriptors. You will run in to your system's "max open files" limit faster on
|
||||
// these platforms.
|
||||
//
|
||||
// The sysctl variables kern.maxfiles and kern.maxfilesperproc can be used to
|
||||
// control the maximum number of open files, as well as /etc/login.conf on BSD
|
||||
// systems.
|
||||
//
|
||||
// # macOS notes
|
||||
//
|
||||
// Spotlight indexing on macOS can result in multiple events (see [#15]). A
|
||||
// temporary workaround is to add your folder(s) to the "Spotlight Privacy
|
||||
// Settings" until we have a native FSEvents implementation (see [#11]).
|
||||
//
|
||||
// [#11]: https://github.com/fsnotify/fsnotify/issues/11
|
||||
// [#15]: https://github.com/fsnotify/fsnotify/issues/15
|
||||
type Watcher struct {
|
||||
// Events sends the filesystem change events.
|
||||
//
|
||||
// fsnotify can send the following events; a "path" here can refer to a
|
||||
// file, directory, symbolic link, or special file like a FIFO.
|
||||
//
|
||||
// fsnotify.Create A new path was created; this may be followed by one
|
||||
// or more Write events if data also gets written to a
|
||||
// file.
|
||||
//
|
||||
// fsnotify.Remove A path was removed.
|
||||
//
|
||||
// fsnotify.Rename A path was renamed. A rename is always sent with the
|
||||
// old path as Event.Name, and a Create event will be
|
||||
// sent with the new name. Renames are only sent for
|
||||
// paths that are currently watched; e.g. moving an
|
||||
// unmonitored file into a monitored directory will
|
||||
// show up as just a Create. Similarly, renaming a file
|
||||
// to outside a monitored directory will show up as
|
||||
// only a Rename.
|
||||
//
|
||||
// fsnotify.Write A file or named pipe was written to. A Truncate will
|
||||
// also trigger a Write. A single "write action"
|
||||
// initiated by the user may show up as one or multiple
|
||||
// writes, depending on when the system syncs things to
|
||||
// disk. For example when compiling a large Go program
|
||||
// you may get hundreds of Write events, so you
|
||||
// probably want to wait until you've stopped receiving
|
||||
// them (see the dedup example in cmd/fsnotify).
|
||||
//
|
||||
// fsnotify.Chmod Attributes were changed. On Linux this is also sent
|
||||
// when a file is removed (or more accurately, when a
|
||||
// link to an inode is removed). On kqueue it's sent
|
||||
// and on kqueue when a file is truncated. On Windows
|
||||
// it's never sent.
|
||||
Events chan Event
|
||||
|
||||
// Errors sends any errors.
|
||||
Errors chan error
|
||||
|
||||
done chan struct{}
|
||||
kq int // File descriptor (as returned by the kqueue() syscall).
|
||||
closepipe [2]int // Pipe used for closing.
|
||||
mu sync.Mutex // Protects access to watcher data
|
||||
watches map[string]int // Watched file descriptors (key: path).
|
||||
watchesByDir map[string]map[int]struct{} // Watched file descriptors indexed by the parent directory (key: dirname(path)).
|
||||
userWatches map[string]struct{} // Watches added with Watcher.Add()
|
||||
dirFlags map[string]uint32 // Watched directories to fflags used in kqueue.
|
||||
paths map[int]pathInfo // File descriptors to path names for processing kqueue events.
|
||||
fileExists map[string]struct{} // Keep track of if we know this file exists (to stop duplicate create events).
|
||||
isClosed bool // Set to true when Close() is first called
|
||||
}
|
||||
|
||||
type pathInfo struct {
|
||||
name string
|
||||
isDir bool
|
||||
}
|
||||
|
||||
// NewWatcher creates a new Watcher.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
kq, closepipe, err := newKqueue()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
w := &Watcher{
|
||||
kq: kq,
|
||||
closepipe: closepipe,
|
||||
watches: make(map[string]int),
|
||||
watchesByDir: make(map[string]map[int]struct{}),
|
||||
dirFlags: make(map[string]uint32),
|
||||
paths: make(map[int]pathInfo),
|
||||
fileExists: make(map[string]struct{}),
|
||||
userWatches: make(map[string]struct{}),
|
||||
Events: make(chan Event),
|
||||
Errors: make(chan error),
|
||||
done: make(chan struct{}),
|
||||
}
|
||||
|
||||
go w.readEvents()
|
||||
return w, nil
|
||||
}
|
||||
|
||||
// newKqueue creates a new kernel event queue and returns a descriptor.
|
||||
//
|
||||
// This registers a new event on closepipe, which will trigger an event when
|
||||
// it's closed. This way we can use kevent() without timeout/polling; without
|
||||
// the closepipe, it would block forever and we wouldn't be able to stop it at
|
||||
// all.
|
||||
func newKqueue() (kq int, closepipe [2]int, err error) {
|
||||
kq, err = unix.Kqueue()
|
||||
if kq == -1 {
|
||||
return kq, closepipe, err
|
||||
}
|
||||
|
||||
// Register the close pipe.
|
||||
err = unix.Pipe(closepipe[:])
|
||||
if err != nil {
|
||||
unix.Close(kq)
|
||||
return kq, closepipe, err
|
||||
}
|
||||
|
||||
// Register changes to listen on the closepipe.
|
||||
changes := make([]unix.Kevent_t, 1)
|
||||
// SetKevent converts int to the platform-specific types.
|
||||
unix.SetKevent(&changes[0], closepipe[0], unix.EVFILT_READ,
|
||||
unix.EV_ADD|unix.EV_ENABLE|unix.EV_ONESHOT)
|
||||
|
||||
ok, err := unix.Kevent(kq, changes, nil, nil)
|
||||
if ok == -1 {
|
||||
unix.Close(kq)
|
||||
unix.Close(closepipe[0])
|
||||
unix.Close(closepipe[1])
|
||||
return kq, closepipe, err
|
||||
}
|
||||
return kq, closepipe, nil
|
||||
}
|
||||
|
||||
// Returns true if the event was sent, or false if watcher is closed.
|
||||
func (w *Watcher) sendEvent(e Event) bool {
|
||||
select {
|
||||
case w.Events <- e:
|
||||
return true
|
||||
case <-w.done:
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Returns true if the error was sent, or false if watcher is closed.
|
||||
func (w *Watcher) sendError(err error) bool {
|
||||
select {
|
||||
case w.Errors <- err:
|
||||
return true
|
||||
case <-w.done:
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
w.mu.Lock()
|
||||
if w.isClosed {
|
||||
w.mu.Unlock()
|
||||
return nil
|
||||
}
|
||||
w.isClosed = true
|
||||
|
||||
// copy paths to remove while locked
|
||||
pathsToRemove := make([]string, 0, len(w.watches))
|
||||
for name := range w.watches {
|
||||
pathsToRemove = append(pathsToRemove, name)
|
||||
}
|
||||
w.mu.Unlock() // Unlock before calling Remove, which also locks
|
||||
for _, name := range pathsToRemove {
|
||||
w.Remove(name)
|
||||
}
|
||||
|
||||
// Send "quit" message to the reader goroutine.
|
||||
unix.Close(w.closepipe[1])
|
||||
close(w.done)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Add starts monitoring the path for changes.
|
||||
//
|
||||
// A path can only be watched once; attempting to watch it more than once will
|
||||
// return an error. Paths that do not yet exist on the filesystem cannot be
|
||||
// added. A watch will be automatically removed if the path is deleted.
|
||||
//
|
||||
// A path will remain watched if it gets renamed to somewhere else on the same
|
||||
// filesystem, but the monitor will get removed if the path gets deleted and
|
||||
// re-created, or if it's moved to a different filesystem.
|
||||
//
|
||||
// Notifications on network filesystems (NFS, SMB, FUSE, etc.) or special
|
||||
// filesystems (/proc, /sys, etc.) generally don't work.
|
||||
//
|
||||
// # Watching directories
|
||||
//
|
||||
// All files in a directory are monitored, including new files that are created
|
||||
// after the watcher is started. Subdirectories are not watched (i.e. it's
|
||||
// non-recursive).
|
||||
//
|
||||
// # Watching files
|
||||
//
|
||||
// Watching individual files (rather than directories) is generally not
|
||||
// recommended as many tools update files atomically. Instead of "just" writing
|
||||
// to the file a temporary file will be written to first, and if successful the
|
||||
// temporary file is moved to to destination removing the original, or some
|
||||
// variant thereof. The watcher on the original file is now lost, as it no
|
||||
// longer exists.
|
||||
//
|
||||
// Instead, watch the parent directory and use Event.Name to filter out files
|
||||
// you're not interested in. There is an example of this in [cmd/fsnotify/file.go].
|
||||
func (w *Watcher) Add(name string) error {
|
||||
w.mu.Lock()
|
||||
w.userWatches[name] = struct{}{}
|
||||
w.mu.Unlock()
|
||||
_, err := w.addWatch(name, noteAllEvents)
|
||||
return err
|
||||
}
|
||||
|
||||
// Remove stops monitoring the path for changes.
|
||||
//
|
||||
// Directories are always removed non-recursively. For example, if you added
|
||||
// /tmp/dir and /tmp/dir/subdir then you will need to remove both.
|
||||
//
|
||||
// Removing a path that has not yet been added returns [ErrNonExistentWatch].
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
name = filepath.Clean(name)
|
||||
w.mu.Lock()
|
||||
watchfd, ok := w.watches[name]
|
||||
w.mu.Unlock()
|
||||
if !ok {
|
||||
return fmt.Errorf("%w: %s", ErrNonExistentWatch, name)
|
||||
}
|
||||
|
||||
err := w.register([]int{watchfd}, unix.EV_DELETE, 0)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
unix.Close(watchfd)
|
||||
|
||||
w.mu.Lock()
|
||||
isDir := w.paths[watchfd].isDir
|
||||
delete(w.watches, name)
|
||||
delete(w.userWatches, name)
|
||||
|
||||
parentName := filepath.Dir(name)
|
||||
delete(w.watchesByDir[parentName], watchfd)
|
||||
|
||||
if len(w.watchesByDir[parentName]) == 0 {
|
||||
delete(w.watchesByDir, parentName)
|
||||
}
|
||||
|
||||
delete(w.paths, watchfd)
|
||||
delete(w.dirFlags, name)
|
||||
delete(w.fileExists, name)
|
||||
w.mu.Unlock()
|
||||
|
||||
// Find all watched paths that are in this directory that are not external.
|
||||
if isDir {
|
||||
var pathsToRemove []string
|
||||
w.mu.Lock()
|
||||
for fd := range w.watchesByDir[name] {
|
||||
path := w.paths[fd]
|
||||
if _, ok := w.userWatches[path.name]; !ok {
|
||||
pathsToRemove = append(pathsToRemove, path.name)
|
||||
}
|
||||
}
|
||||
w.mu.Unlock()
|
||||
for _, name := range pathsToRemove {
|
||||
// Since these are internal, not much sense in propagating error
|
||||
// to the user, as that will just confuse them with an error about
|
||||
// a path they did not explicitly watch themselves.
|
||||
w.Remove(name)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// WatchList returns all paths added with [Add] (and are not yet removed).
|
||||
func (w *Watcher) WatchList() []string {
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
|
||||
entries := make([]string, 0, len(w.userWatches))
|
||||
for pathname := range w.userWatches {
|
||||
entries = append(entries, pathname)
|
||||
}
|
||||
|
||||
return entries
|
||||
}
|
||||
|
||||
// Watch all events (except NOTE_EXTEND, NOTE_LINK, NOTE_REVOKE)
|
||||
const noteAllEvents = unix.NOTE_DELETE | unix.NOTE_WRITE | unix.NOTE_ATTRIB | unix.NOTE_RENAME
|
||||
|
||||
// addWatch adds name to the watched file set.
|
||||
// The flags are interpreted as described in kevent(2).
|
||||
// Returns the real path to the file which was added, if any, which may be different from the one passed in the case of symlinks.
|
||||
func (w *Watcher) addWatch(name string, flags uint32) (string, error) {
|
||||
var isDir bool
|
||||
// Make ./name and name equivalent
|
||||
name = filepath.Clean(name)
|
||||
|
||||
w.mu.Lock()
|
||||
if w.isClosed {
|
||||
w.mu.Unlock()
|
||||
return "", errors.New("kevent instance already closed")
|
||||
}
|
||||
watchfd, alreadyWatching := w.watches[name]
|
||||
// We already have a watch, but we can still override flags.
|
||||
if alreadyWatching {
|
||||
isDir = w.paths[watchfd].isDir
|
||||
}
|
||||
w.mu.Unlock()
|
||||
|
||||
if !alreadyWatching {
|
||||
fi, err := os.Lstat(name)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// Don't watch sockets or named pipes
|
||||
if (fi.Mode()&os.ModeSocket == os.ModeSocket) || (fi.Mode()&os.ModeNamedPipe == os.ModeNamedPipe) {
|
||||
return "", nil
|
||||
}
|
||||
|
||||
// Follow Symlinks
|
||||
//
|
||||
// Linux can add unresolvable symlinks to the watch list without issue,
|
||||
// and Windows can't do symlinks period. To maintain consistency, we
|
||||
// will act like everything is fine if the link can't be resolved.
|
||||
// There will simply be no file events for broken symlinks. Hence the
|
||||
// returns of nil on errors.
|
||||
if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
|
||||
name, err = filepath.EvalSymlinks(name)
|
||||
if err != nil {
|
||||
return "", nil
|
||||
}
|
||||
|
||||
w.mu.Lock()
|
||||
_, alreadyWatching = w.watches[name]
|
||||
w.mu.Unlock()
|
||||
|
||||
if alreadyWatching {
|
||||
return name, nil
|
||||
}
|
||||
|
||||
fi, err = os.Lstat(name)
|
||||
if err != nil {
|
||||
return "", nil
|
||||
}
|
||||
}
|
||||
|
||||
// Retry on EINTR; open() can return EINTR in practice on macOS.
|
||||
// See #354, and go issues 11180 and 39237.
|
||||
for {
|
||||
watchfd, err = unix.Open(name, openMode, 0)
|
||||
if err == nil {
|
||||
break
|
||||
}
|
||||
if errors.Is(err, unix.EINTR) {
|
||||
continue
|
||||
}
|
||||
|
||||
return "", err
|
||||
}
|
||||
|
||||
isDir = fi.IsDir()
|
||||
}
|
||||
|
||||
err := w.register([]int{watchfd}, unix.EV_ADD|unix.EV_CLEAR|unix.EV_ENABLE, flags)
|
||||
if err != nil {
|
||||
unix.Close(watchfd)
|
||||
return "", err
|
||||
}
|
||||
|
||||
if !alreadyWatching {
|
||||
w.mu.Lock()
|
||||
parentName := filepath.Dir(name)
|
||||
w.watches[name] = watchfd
|
||||
|
||||
watchesByDir, ok := w.watchesByDir[parentName]
|
||||
if !ok {
|
||||
watchesByDir = make(map[int]struct{}, 1)
|
||||
w.watchesByDir[parentName] = watchesByDir
|
||||
}
|
||||
watchesByDir[watchfd] = struct{}{}
|
||||
|
||||
w.paths[watchfd] = pathInfo{name: name, isDir: isDir}
|
||||
w.mu.Unlock()
|
||||
}
|
||||
|
||||
if isDir {
|
||||
// Watch the directory if it has not been watched before,
|
||||
// or if it was watched before, but perhaps only a NOTE_DELETE (watchDirectoryFiles)
|
||||
w.mu.Lock()
|
||||
|
||||
watchDir := (flags&unix.NOTE_WRITE) == unix.NOTE_WRITE &&
|
||||
(!alreadyWatching || (w.dirFlags[name]&unix.NOTE_WRITE) != unix.NOTE_WRITE)
|
||||
// Store flags so this watch can be updated later
|
||||
w.dirFlags[name] = flags
|
||||
w.mu.Unlock()
|
||||
|
||||
if watchDir {
|
||||
if err := w.watchDirectoryFiles(name); err != nil {
|
||||
return "", err
|
||||
}
|
||||
}
|
||||
}
|
||||
return name, nil
|
||||
}
|
||||
|
||||
// readEvents reads from kqueue and converts the received kevents into
|
||||
// Event values that it sends down the Events channel.
|
||||
func (w *Watcher) readEvents() {
|
||||
defer func() {
|
||||
err := unix.Close(w.kq)
|
||||
if err != nil {
|
||||
w.Errors <- err
|
||||
}
|
||||
unix.Close(w.closepipe[0])
|
||||
close(w.Events)
|
||||
close(w.Errors)
|
||||
}()
|
||||
|
||||
eventBuffer := make([]unix.Kevent_t, 10)
|
||||
for closed := false; !closed; {
|
||||
kevents, err := w.read(eventBuffer)
|
||||
// EINTR is okay, the syscall was interrupted before timeout expired.
|
||||
if err != nil && err != unix.EINTR {
|
||||
if !w.sendError(fmt.Errorf("fsnotify.readEvents: %w", err)) {
|
||||
closed = true
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
// Flush the events we received to the Events channel
|
||||
for _, kevent := range kevents {
|
||||
var (
|
||||
watchfd = int(kevent.Ident)
|
||||
mask = uint32(kevent.Fflags)
|
||||
)
|
||||
|
||||
// Shut down the loop when the pipe is closed, but only after all
|
||||
// other events have been processed.
|
||||
if watchfd == w.closepipe[0] {
|
||||
closed = true
|
||||
continue
|
||||
}
|
||||
|
||||
w.mu.Lock()
|
||||
path := w.paths[watchfd]
|
||||
w.mu.Unlock()
|
||||
|
||||
event := w.newEvent(path.name, mask)
|
||||
|
||||
if path.isDir && !event.Has(Remove) {
|
||||
// Double check to make sure the directory exists. This can
|
||||
// happen when we do a rm -fr on a recursively watched folders
|
||||
// and we receive a modification event first but the folder has
|
||||
// been deleted and later receive the delete event.
|
||||
if _, err := os.Lstat(event.Name); os.IsNotExist(err) {
|
||||
event.Op |= Remove
|
||||
}
|
||||
}
|
||||
|
||||
if event.Has(Rename) || event.Has(Remove) {
|
||||
w.Remove(event.Name)
|
||||
w.mu.Lock()
|
||||
delete(w.fileExists, event.Name)
|
||||
w.mu.Unlock()
|
||||
}
|
||||
|
||||
if path.isDir && event.Has(Write) && !event.Has(Remove) {
|
||||
w.sendDirectoryChangeEvents(event.Name)
|
||||
} else {
|
||||
if !w.sendEvent(event) {
|
||||
closed = true
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
if event.Has(Remove) {
|
||||
// Look for a file that may have overwritten this.
|
||||
// For example, mv f1 f2 will delete f2, then create f2.
|
||||
if path.isDir {
|
||||
fileDir := filepath.Clean(event.Name)
|
||||
w.mu.Lock()
|
||||
_, found := w.watches[fileDir]
|
||||
w.mu.Unlock()
|
||||
if found {
|
||||
// make sure the directory exists before we watch for changes. When we
|
||||
// do a recursive watch and perform rm -fr, the parent directory might
|
||||
// have gone missing, ignore the missing directory and let the
|
||||
// upcoming delete event remove the watch from the parent directory.
|
||||
if _, err := os.Lstat(fileDir); err == nil {
|
||||
w.sendDirectoryChangeEvents(fileDir)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
filePath := filepath.Clean(event.Name)
|
||||
if fileInfo, err := os.Lstat(filePath); err == nil {
|
||||
w.sendFileCreatedEventIfNew(filePath, fileInfo)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// newEvent returns an platform-independent Event based on kqueue Fflags.
|
||||
func (w *Watcher) newEvent(name string, mask uint32) Event {
|
||||
e := Event{Name: name}
|
||||
if mask&unix.NOTE_DELETE == unix.NOTE_DELETE {
|
||||
e.Op |= Remove
|
||||
}
|
||||
if mask&unix.NOTE_WRITE == unix.NOTE_WRITE {
|
||||
e.Op |= Write
|
||||
}
|
||||
if mask&unix.NOTE_RENAME == unix.NOTE_RENAME {
|
||||
e.Op |= Rename
|
||||
}
|
||||
if mask&unix.NOTE_ATTRIB == unix.NOTE_ATTRIB {
|
||||
e.Op |= Chmod
|
||||
}
|
||||
return e
|
||||
}
|
||||
|
||||
// watchDirectoryFiles to mimic inotify when adding a watch on a directory
|
||||
func (w *Watcher) watchDirectoryFiles(dirPath string) error {
|
||||
// Get all files
|
||||
files, err := ioutil.ReadDir(dirPath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for _, fileInfo := range files {
|
||||
path := filepath.Join(dirPath, fileInfo.Name())
|
||||
|
||||
cleanPath, err := w.internalWatch(path, fileInfo)
|
||||
if err != nil {
|
||||
// No permission to read the file; that's not a problem: just skip.
|
||||
// But do add it to w.fileExists to prevent it from being picked up
|
||||
// as a "new" file later (it still shows up in the directory
|
||||
// listing).
|
||||
switch {
|
||||
case errors.Is(err, unix.EACCES) || errors.Is(err, unix.EPERM):
|
||||
cleanPath = filepath.Clean(path)
|
||||
default:
|
||||
return fmt.Errorf("%q: %w", filepath.Join(dirPath, fileInfo.Name()), err)
|
||||
}
|
||||
}
|
||||
|
||||
w.mu.Lock()
|
||||
w.fileExists[cleanPath] = struct{}{}
|
||||
w.mu.Unlock()
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Search the directory for new files and send an event for them.
|
||||
//
|
||||
// This functionality is to have the BSD watcher match the inotify, which sends
|
||||
// a create event for files created in a watched directory.
|
||||
func (w *Watcher) sendDirectoryChangeEvents(dir string) {
|
||||
// Get all files
|
||||
files, err := ioutil.ReadDir(dir)
|
||||
if err != nil {
|
||||
if !w.sendError(fmt.Errorf("fsnotify.sendDirectoryChangeEvents: %w", err)) {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// Search for new files
|
||||
for _, fi := range files {
|
||||
err := w.sendFileCreatedEventIfNew(filepath.Join(dir, fi.Name()), fi)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// sendFileCreatedEvent sends a create event if the file isn't already being tracked.
|
||||
func (w *Watcher) sendFileCreatedEventIfNew(filePath string, fileInfo os.FileInfo) (err error) {
|
||||
w.mu.Lock()
|
||||
_, doesExist := w.fileExists[filePath]
|
||||
w.mu.Unlock()
|
||||
if !doesExist {
|
||||
if !w.sendEvent(Event{Name: filePath, Op: Create}) {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// like watchDirectoryFiles (but without doing another ReadDir)
|
||||
filePath, err = w.internalWatch(filePath, fileInfo)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
w.mu.Lock()
|
||||
w.fileExists[filePath] = struct{}{}
|
||||
w.mu.Unlock()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (w *Watcher) internalWatch(name string, fileInfo os.FileInfo) (string, error) {
|
||||
if fileInfo.IsDir() {
|
||||
// mimic Linux providing delete events for subdirectories
|
||||
// but preserve the flags used if currently watching subdirectory
|
||||
w.mu.Lock()
|
||||
flags := w.dirFlags[name]
|
||||
w.mu.Unlock()
|
||||
|
||||
flags |= unix.NOTE_DELETE | unix.NOTE_RENAME
|
||||
return w.addWatch(name, flags)
|
||||
}
|
||||
|
||||
// watch file to mimic Linux inotify
|
||||
return w.addWatch(name, noteAllEvents)
|
||||
}
|
||||
|
||||
// Register events with the queue.
|
||||
func (w *Watcher) register(fds []int, flags int, fflags uint32) error {
|
||||
changes := make([]unix.Kevent_t, len(fds))
|
||||
for i, fd := range fds {
|
||||
// SetKevent converts int to the platform-specific types.
|
||||
unix.SetKevent(&changes[i], fd, unix.EVFILT_VNODE, flags)
|
||||
changes[i].Fflags = fflags
|
||||
}
|
||||
|
||||
// Register the events.
|
||||
success, err := unix.Kevent(w.kq, changes, nil, nil)
|
||||
if success == -1 {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// read retrieves pending events, or waits until an event occurs.
|
||||
func (w *Watcher) read(events []unix.Kevent_t) ([]unix.Kevent_t, error) {
|
||||
n, err := unix.Kevent(w.kq, nil, events, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return events[0:n], nil
|
||||
}
|
||||
|
|
@ -0,0 +1,66 @@
|
|||
//go:build !darwin && !dragonfly && !freebsd && !openbsd && !linux && !netbsd && !solaris && !windows
|
||||
// +build !darwin,!dragonfly,!freebsd,!openbsd,!linux,!netbsd,!solaris,!windows
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"runtime"
|
||||
)
|
||||
|
||||
// Watcher watches a set of files, delivering events to a channel.
|
||||
type Watcher struct{}
|
||||
|
||||
// NewWatcher creates a new Watcher.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
return nil, fmt.Errorf("fsnotify not supported on %s", runtime.GOOS)
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Add starts monitoring the path for changes.
|
||||
//
|
||||
// A path can only be watched once; attempting to watch it more than once will
|
||||
// return an error. Paths that do not yet exist on the filesystem cannot be
|
||||
// added. A watch will be automatically removed if the path is deleted.
|
||||
//
|
||||
// A path will remain watched if it gets renamed to somewhere else on the same
|
||||
// filesystem, but the monitor will get removed if the path gets deleted and
|
||||
// re-created, or if it's moved to a different filesystem.
|
||||
//
|
||||
// Notifications on network filesystems (NFS, SMB, FUSE, etc.) or special
|
||||
// filesystems (/proc, /sys, etc.) generally don't work.
|
||||
//
|
||||
// # Watching directories
|
||||
//
|
||||
// All files in a directory are monitored, including new files that are created
|
||||
// after the watcher is started. Subdirectories are not watched (i.e. it's
|
||||
// non-recursive).
|
||||
//
|
||||
// # Watching files
|
||||
//
|
||||
// Watching individual files (rather than directories) is generally not
|
||||
// recommended as many tools update files atomically. Instead of "just" writing
|
||||
// to the file a temporary file will be written to first, and if successful the
|
||||
// temporary file is moved to to destination removing the original, or some
|
||||
// variant thereof. The watcher on the original file is now lost, as it no
|
||||
// longer exists.
|
||||
//
|
||||
// Instead, watch the parent directory and use Event.Name to filter out files
|
||||
// you're not interested in. There is an example of this in [cmd/fsnotify/file.go].
|
||||
func (w *Watcher) Add(name string) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Remove stops monitoring the path for changes.
|
||||
//
|
||||
// Directories are always removed non-recursively. For example, if you added
|
||||
// /tmp/dir and /tmp/dir/subdir then you will need to remove both.
|
||||
//
|
||||
// Removing a path that has not yet been added returns [ErrNonExistentWatch].
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,746 @@
|
|||
//go:build windows
|
||||
// +build windows
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"reflect"
|
||||
"runtime"
|
||||
"strings"
|
||||
"sync"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/windows"
|
||||
)
|
||||
|
||||
// Watcher watches a set of paths, delivering events on a channel.
|
||||
//
|
||||
// A watcher should not be copied (e.g. pass it by pointer, rather than by
|
||||
// value).
|
||||
//
|
||||
// # Linux notes
|
||||
//
|
||||
// When a file is removed a Remove event won't be emitted until all file
|
||||
// descriptors are closed, and deletes will always emit a Chmod. For example:
|
||||
//
|
||||
// fp := os.Open("file")
|
||||
// os.Remove("file") // Triggers Chmod
|
||||
// fp.Close() // Triggers Remove
|
||||
//
|
||||
// This is the event that inotify sends, so not much can be changed about this.
|
||||
//
|
||||
// The fs.inotify.max_user_watches sysctl variable specifies the upper limit
|
||||
// for the number of watches per user, and fs.inotify.max_user_instances
|
||||
// specifies the maximum number of inotify instances per user. Every Watcher you
|
||||
// create is an "instance", and every path you add is a "watch".
|
||||
//
|
||||
// These are also exposed in /proc as /proc/sys/fs/inotify/max_user_watches and
|
||||
// /proc/sys/fs/inotify/max_user_instances
|
||||
//
|
||||
// To increase them you can use sysctl or write the value to the /proc file:
|
||||
//
|
||||
// # Default values on Linux 5.18
|
||||
// sysctl fs.inotify.max_user_watches=124983
|
||||
// sysctl fs.inotify.max_user_instances=128
|
||||
//
|
||||
// To make the changes persist on reboot edit /etc/sysctl.conf or
|
||||
// /usr/lib/sysctl.d/50-default.conf (details differ per Linux distro; check
|
||||
// your distro's documentation):
|
||||
//
|
||||
// fs.inotify.max_user_watches=124983
|
||||
// fs.inotify.max_user_instances=128
|
||||
//
|
||||
// Reaching the limit will result in a "no space left on device" or "too many open
|
||||
// files" error.
|
||||
//
|
||||
// # kqueue notes (macOS, BSD)
|
||||
//
|
||||
// kqueue requires opening a file descriptor for every file that's being watched;
|
||||
// so if you're watching a directory with five files then that's six file
|
||||
// descriptors. You will run in to your system's "max open files" limit faster on
|
||||
// these platforms.
|
||||
//
|
||||
// The sysctl variables kern.maxfiles and kern.maxfilesperproc can be used to
|
||||
// control the maximum number of open files, as well as /etc/login.conf on BSD
|
||||
// systems.
|
||||
//
|
||||
// # macOS notes
|
||||
//
|
||||
// Spotlight indexing on macOS can result in multiple events (see [#15]). A
|
||||
// temporary workaround is to add your folder(s) to the "Spotlight Privacy
|
||||
// Settings" until we have a native FSEvents implementation (see [#11]).
|
||||
//
|
||||
// [#11]: https://github.com/fsnotify/fsnotify/issues/11
|
||||
// [#15]: https://github.com/fsnotify/fsnotify/issues/15
|
||||
type Watcher struct {
|
||||
// Events sends the filesystem change events.
|
||||
//
|
||||
// fsnotify can send the following events; a "path" here can refer to a
|
||||
// file, directory, symbolic link, or special file like a FIFO.
|
||||
//
|
||||
// fsnotify.Create A new path was created; this may be followed by one
|
||||
// or more Write events if data also gets written to a
|
||||
// file.
|
||||
//
|
||||
// fsnotify.Remove A path was removed.
|
||||
//
|
||||
// fsnotify.Rename A path was renamed. A rename is always sent with the
|
||||
// old path as Event.Name, and a Create event will be
|
||||
// sent with the new name. Renames are only sent for
|
||||
// paths that are currently watched; e.g. moving an
|
||||
// unmonitored file into a monitored directory will
|
||||
// show up as just a Create. Similarly, renaming a file
|
||||
// to outside a monitored directory will show up as
|
||||
// only a Rename.
|
||||
//
|
||||
// fsnotify.Write A file or named pipe was written to. A Truncate will
|
||||
// also trigger a Write. A single "write action"
|
||||
// initiated by the user may show up as one or multiple
|
||||
// writes, depending on when the system syncs things to
|
||||
// disk. For example when compiling a large Go program
|
||||
// you may get hundreds of Write events, so you
|
||||
// probably want to wait until you've stopped receiving
|
||||
// them (see the dedup example in cmd/fsnotify).
|
||||
//
|
||||
// fsnotify.Chmod Attributes were changed. On Linux this is also sent
|
||||
// when a file is removed (or more accurately, when a
|
||||
// link to an inode is removed). On kqueue it's sent
|
||||
// and on kqueue when a file is truncated. On Windows
|
||||
// it's never sent.
|
||||
Events chan Event
|
||||
|
||||
// Errors sends any errors.
|
||||
Errors chan error
|
||||
|
||||
port windows.Handle // Handle to completion port
|
||||
input chan *input // Inputs to the reader are sent on this channel
|
||||
quit chan chan<- error
|
||||
|
||||
mu sync.Mutex // Protects access to watches, isClosed
|
||||
watches watchMap // Map of watches (key: i-number)
|
||||
isClosed bool // Set to true when Close() is first called
|
||||
}
|
||||
|
||||
// NewWatcher creates a new Watcher.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
port, err := windows.CreateIoCompletionPort(windows.InvalidHandle, 0, 0, 0)
|
||||
if err != nil {
|
||||
return nil, os.NewSyscallError("CreateIoCompletionPort", err)
|
||||
}
|
||||
w := &Watcher{
|
||||
port: port,
|
||||
watches: make(watchMap),
|
||||
input: make(chan *input, 1),
|
||||
Events: make(chan Event, 50),
|
||||
Errors: make(chan error),
|
||||
quit: make(chan chan<- error, 1),
|
||||
}
|
||||
go w.readEvents()
|
||||
return w, nil
|
||||
}
|
||||
|
||||
func (w *Watcher) sendEvent(name string, mask uint64) bool {
|
||||
if mask == 0 {
|
||||
return false
|
||||
}
|
||||
|
||||
event := w.newEvent(name, uint32(mask))
|
||||
select {
|
||||
case ch := <-w.quit:
|
||||
w.quit <- ch
|
||||
case w.Events <- event:
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Returns true if the error was sent, or false if watcher is closed.
|
||||
func (w *Watcher) sendError(err error) bool {
|
||||
select {
|
||||
case w.Errors <- err:
|
||||
return true
|
||||
case <-w.quit:
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
w.mu.Lock()
|
||||
if w.isClosed {
|
||||
w.mu.Unlock()
|
||||
return nil
|
||||
}
|
||||
w.isClosed = true
|
||||
w.mu.Unlock()
|
||||
|
||||
// Send "quit" message to the reader goroutine
|
||||
ch := make(chan error)
|
||||
w.quit <- ch
|
||||
if err := w.wakeupReader(); err != nil {
|
||||
return err
|
||||
}
|
||||
return <-ch
|
||||
}
|
||||
|
||||
// Add starts monitoring the path for changes.
|
||||
//
|
||||
// A path can only be watched once; attempting to watch it more than once will
|
||||
// return an error. Paths that do not yet exist on the filesystem cannot be
|
||||
// added. A watch will be automatically removed if the path is deleted.
|
||||
//
|
||||
// A path will remain watched if it gets renamed to somewhere else on the same
|
||||
// filesystem, but the monitor will get removed if the path gets deleted and
|
||||
// re-created, or if it's moved to a different filesystem.
|
||||
//
|
||||
// Notifications on network filesystems (NFS, SMB, FUSE, etc.) or special
|
||||
// filesystems (/proc, /sys, etc.) generally don't work.
|
||||
//
|
||||
// # Watching directories
|
||||
//
|
||||
// All files in a directory are monitored, including new files that are created
|
||||
// after the watcher is started. Subdirectories are not watched (i.e. it's
|
||||
// non-recursive).
|
||||
//
|
||||
// # Watching files
|
||||
//
|
||||
// Watching individual files (rather than directories) is generally not
|
||||
// recommended as many tools update files atomically. Instead of "just" writing
|
||||
// to the file a temporary file will be written to first, and if successful the
|
||||
// temporary file is moved to to destination removing the original, or some
|
||||
// variant thereof. The watcher on the original file is now lost, as it no
|
||||
// longer exists.
|
||||
//
|
||||
// Instead, watch the parent directory and use Event.Name to filter out files
|
||||
// you're not interested in. There is an example of this in [cmd/fsnotify/file.go].
|
||||
func (w *Watcher) Add(name string) error {
|
||||
w.mu.Lock()
|
||||
if w.isClosed {
|
||||
w.mu.Unlock()
|
||||
return errors.New("watcher already closed")
|
||||
}
|
||||
w.mu.Unlock()
|
||||
|
||||
in := &input{
|
||||
op: opAddWatch,
|
||||
path: filepath.Clean(name),
|
||||
flags: sysFSALLEVENTS,
|
||||
reply: make(chan error),
|
||||
}
|
||||
w.input <- in
|
||||
if err := w.wakeupReader(); err != nil {
|
||||
return err
|
||||
}
|
||||
return <-in.reply
|
||||
}
|
||||
|
||||
// Remove stops monitoring the path for changes.
|
||||
//
|
||||
// Directories are always removed non-recursively. For example, if you added
|
||||
// /tmp/dir and /tmp/dir/subdir then you will need to remove both.
|
||||
//
|
||||
// Removing a path that has not yet been added returns [ErrNonExistentWatch].
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
in := &input{
|
||||
op: opRemoveWatch,
|
||||
path: filepath.Clean(name),
|
||||
reply: make(chan error),
|
||||
}
|
||||
w.input <- in
|
||||
if err := w.wakeupReader(); err != nil {
|
||||
return err
|
||||
}
|
||||
return <-in.reply
|
||||
}
|
||||
|
||||
// WatchList returns all paths added with [Add] (and are not yet removed).
|
||||
func (w *Watcher) WatchList() []string {
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
|
||||
entries := make([]string, 0, len(w.watches))
|
||||
for _, entry := range w.watches {
|
||||
for _, watchEntry := range entry {
|
||||
entries = append(entries, watchEntry.path)
|
||||
}
|
||||
}
|
||||
|
||||
return entries
|
||||
}
|
||||
|
||||
// These options are from the old golang.org/x/exp/winfsnotify, where you could
|
||||
// add various options to the watch. This has long since been removed.
|
||||
//
|
||||
// The "sys" in the name is misleading as they're not part of any "system".
|
||||
//
|
||||
// This should all be removed at some point, and just use windows.FILE_NOTIFY_*
|
||||
const (
|
||||
sysFSALLEVENTS = 0xfff
|
||||
sysFSATTRIB = 0x4
|
||||
sysFSCREATE = 0x100
|
||||
sysFSDELETE = 0x200
|
||||
sysFSDELETESELF = 0x400
|
||||
sysFSMODIFY = 0x2
|
||||
sysFSMOVE = 0xc0
|
||||
sysFSMOVEDFROM = 0x40
|
||||
sysFSMOVEDTO = 0x80
|
||||
sysFSMOVESELF = 0x800
|
||||
sysFSIGNORED = 0x8000
|
||||
)
|
||||
|
||||
func (w *Watcher) newEvent(name string, mask uint32) Event {
|
||||
e := Event{Name: name}
|
||||
if mask&sysFSCREATE == sysFSCREATE || mask&sysFSMOVEDTO == sysFSMOVEDTO {
|
||||
e.Op |= Create
|
||||
}
|
||||
if mask&sysFSDELETE == sysFSDELETE || mask&sysFSDELETESELF == sysFSDELETESELF {
|
||||
e.Op |= Remove
|
||||
}
|
||||
if mask&sysFSMODIFY == sysFSMODIFY {
|
||||
e.Op |= Write
|
||||
}
|
||||
if mask&sysFSMOVE == sysFSMOVE || mask&sysFSMOVESELF == sysFSMOVESELF || mask&sysFSMOVEDFROM == sysFSMOVEDFROM {
|
||||
e.Op |= Rename
|
||||
}
|
||||
if mask&sysFSATTRIB == sysFSATTRIB {
|
||||
e.Op |= Chmod
|
||||
}
|
||||
return e
|
||||
}
|
||||
|
||||
const (
|
||||
opAddWatch = iota
|
||||
opRemoveWatch
|
||||
)
|
||||
|
||||
const (
|
||||
provisional uint64 = 1 << (32 + iota)
|
||||
)
|
||||
|
||||
type input struct {
|
||||
op int
|
||||
path string
|
||||
flags uint32
|
||||
reply chan error
|
||||
}
|
||||
|
||||
type inode struct {
|
||||
handle windows.Handle
|
||||
volume uint32
|
||||
index uint64
|
||||
}
|
||||
|
||||
type watch struct {
|
||||
ov windows.Overlapped
|
||||
ino *inode // i-number
|
||||
path string // Directory path
|
||||
mask uint64 // Directory itself is being watched with these notify flags
|
||||
names map[string]uint64 // Map of names being watched and their notify flags
|
||||
rename string // Remembers the old name while renaming a file
|
||||
buf [65536]byte // 64K buffer
|
||||
}
|
||||
|
||||
type (
|
||||
indexMap map[uint64]*watch
|
||||
watchMap map[uint32]indexMap
|
||||
)
|
||||
|
||||
func (w *Watcher) wakeupReader() error {
|
||||
err := windows.PostQueuedCompletionStatus(w.port, 0, 0, nil)
|
||||
if err != nil {
|
||||
return os.NewSyscallError("PostQueuedCompletionStatus", err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (w *Watcher) getDir(pathname string) (dir string, err error) {
|
||||
attr, err := windows.GetFileAttributes(windows.StringToUTF16Ptr(pathname))
|
||||
if err != nil {
|
||||
return "", os.NewSyscallError("GetFileAttributes", err)
|
||||
}
|
||||
if attr&windows.FILE_ATTRIBUTE_DIRECTORY != 0 {
|
||||
dir = pathname
|
||||
} else {
|
||||
dir, _ = filepath.Split(pathname)
|
||||
dir = filepath.Clean(dir)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (w *Watcher) getIno(path string) (ino *inode, err error) {
|
||||
h, err := windows.CreateFile(windows.StringToUTF16Ptr(path),
|
||||
windows.FILE_LIST_DIRECTORY,
|
||||
windows.FILE_SHARE_READ|windows.FILE_SHARE_WRITE|windows.FILE_SHARE_DELETE,
|
||||
nil, windows.OPEN_EXISTING,
|
||||
windows.FILE_FLAG_BACKUP_SEMANTICS|windows.FILE_FLAG_OVERLAPPED, 0)
|
||||
if err != nil {
|
||||
return nil, os.NewSyscallError("CreateFile", err)
|
||||
}
|
||||
|
||||
var fi windows.ByHandleFileInformation
|
||||
err = windows.GetFileInformationByHandle(h, &fi)
|
||||
if err != nil {
|
||||
windows.CloseHandle(h)
|
||||
return nil, os.NewSyscallError("GetFileInformationByHandle", err)
|
||||
}
|
||||
ino = &inode{
|
||||
handle: h,
|
||||
volume: fi.VolumeSerialNumber,
|
||||
index: uint64(fi.FileIndexHigh)<<32 | uint64(fi.FileIndexLow),
|
||||
}
|
||||
return ino, nil
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (m watchMap) get(ino *inode) *watch {
|
||||
if i := m[ino.volume]; i != nil {
|
||||
return i[ino.index]
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (m watchMap) set(ino *inode, watch *watch) {
|
||||
i := m[ino.volume]
|
||||
if i == nil {
|
||||
i = make(indexMap)
|
||||
m[ino.volume] = i
|
||||
}
|
||||
i[ino.index] = watch
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (w *Watcher) addWatch(pathname string, flags uint64) error {
|
||||
dir, err := w.getDir(pathname)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
ino, err := w.getIno(dir)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
w.mu.Lock()
|
||||
watchEntry := w.watches.get(ino)
|
||||
w.mu.Unlock()
|
||||
if watchEntry == nil {
|
||||
_, err := windows.CreateIoCompletionPort(ino.handle, w.port, 0, 0)
|
||||
if err != nil {
|
||||
windows.CloseHandle(ino.handle)
|
||||
return os.NewSyscallError("CreateIoCompletionPort", err)
|
||||
}
|
||||
watchEntry = &watch{
|
||||
ino: ino,
|
||||
path: dir,
|
||||
names: make(map[string]uint64),
|
||||
}
|
||||
w.mu.Lock()
|
||||
w.watches.set(ino, watchEntry)
|
||||
w.mu.Unlock()
|
||||
flags |= provisional
|
||||
} else {
|
||||
windows.CloseHandle(ino.handle)
|
||||
}
|
||||
if pathname == dir {
|
||||
watchEntry.mask |= flags
|
||||
} else {
|
||||
watchEntry.names[filepath.Base(pathname)] |= flags
|
||||
}
|
||||
|
||||
err = w.startRead(watchEntry)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if pathname == dir {
|
||||
watchEntry.mask &= ^provisional
|
||||
} else {
|
||||
watchEntry.names[filepath.Base(pathname)] &= ^provisional
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (w *Watcher) remWatch(pathname string) error {
|
||||
dir, err := w.getDir(pathname)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
ino, err := w.getIno(dir)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
w.mu.Lock()
|
||||
watch := w.watches.get(ino)
|
||||
w.mu.Unlock()
|
||||
|
||||
err = windows.CloseHandle(ino.handle)
|
||||
if err != nil {
|
||||
w.sendError(os.NewSyscallError("CloseHandle", err))
|
||||
}
|
||||
if watch == nil {
|
||||
return fmt.Errorf("%w: %s", ErrNonExistentWatch, pathname)
|
||||
}
|
||||
if pathname == dir {
|
||||
w.sendEvent(watch.path, watch.mask&sysFSIGNORED)
|
||||
watch.mask = 0
|
||||
} else {
|
||||
name := filepath.Base(pathname)
|
||||
w.sendEvent(filepath.Join(watch.path, name), watch.names[name]&sysFSIGNORED)
|
||||
delete(watch.names, name)
|
||||
}
|
||||
|
||||
return w.startRead(watch)
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (w *Watcher) deleteWatch(watch *watch) {
|
||||
for name, mask := range watch.names {
|
||||
if mask&provisional == 0 {
|
||||
w.sendEvent(filepath.Join(watch.path, name), mask&sysFSIGNORED)
|
||||
}
|
||||
delete(watch.names, name)
|
||||
}
|
||||
if watch.mask != 0 {
|
||||
if watch.mask&provisional == 0 {
|
||||
w.sendEvent(watch.path, watch.mask&sysFSIGNORED)
|
||||
}
|
||||
watch.mask = 0
|
||||
}
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (w *Watcher) startRead(watch *watch) error {
|
||||
err := windows.CancelIo(watch.ino.handle)
|
||||
if err != nil {
|
||||
w.sendError(os.NewSyscallError("CancelIo", err))
|
||||
w.deleteWatch(watch)
|
||||
}
|
||||
mask := w.toWindowsFlags(watch.mask)
|
||||
for _, m := range watch.names {
|
||||
mask |= w.toWindowsFlags(m)
|
||||
}
|
||||
if mask == 0 {
|
||||
err := windows.CloseHandle(watch.ino.handle)
|
||||
if err != nil {
|
||||
w.sendError(os.NewSyscallError("CloseHandle", err))
|
||||
}
|
||||
w.mu.Lock()
|
||||
delete(w.watches[watch.ino.volume], watch.ino.index)
|
||||
w.mu.Unlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
rdErr := windows.ReadDirectoryChanges(watch.ino.handle, &watch.buf[0],
|
||||
uint32(unsafe.Sizeof(watch.buf)), false, mask, nil, &watch.ov, 0)
|
||||
if rdErr != nil {
|
||||
err := os.NewSyscallError("ReadDirectoryChanges", rdErr)
|
||||
if rdErr == windows.ERROR_ACCESS_DENIED && watch.mask&provisional == 0 {
|
||||
// Watched directory was probably removed
|
||||
w.sendEvent(watch.path, watch.mask&sysFSDELETESELF)
|
||||
err = nil
|
||||
}
|
||||
w.deleteWatch(watch)
|
||||
w.startRead(watch)
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// readEvents reads from the I/O completion port, converts the
|
||||
// received events into Event objects and sends them via the Events channel.
|
||||
// Entry point to the I/O thread.
|
||||
func (w *Watcher) readEvents() {
|
||||
var (
|
||||
n uint32
|
||||
key uintptr
|
||||
ov *windows.Overlapped
|
||||
)
|
||||
runtime.LockOSThread()
|
||||
|
||||
for {
|
||||
qErr := windows.GetQueuedCompletionStatus(w.port, &n, &key, &ov, windows.INFINITE)
|
||||
// This error is handled after the watch == nil check below. NOTE: this
|
||||
// seems odd, note sure if it's correct.
|
||||
|
||||
watch := (*watch)(unsafe.Pointer(ov))
|
||||
if watch == nil {
|
||||
select {
|
||||
case ch := <-w.quit:
|
||||
w.mu.Lock()
|
||||
var indexes []indexMap
|
||||
for _, index := range w.watches {
|
||||
indexes = append(indexes, index)
|
||||
}
|
||||
w.mu.Unlock()
|
||||
for _, index := range indexes {
|
||||
for _, watch := range index {
|
||||
w.deleteWatch(watch)
|
||||
w.startRead(watch)
|
||||
}
|
||||
}
|
||||
|
||||
err := windows.CloseHandle(w.port)
|
||||
if err != nil {
|
||||
err = os.NewSyscallError("CloseHandle", err)
|
||||
}
|
||||
close(w.Events)
|
||||
close(w.Errors)
|
||||
ch <- err
|
||||
return
|
||||
case in := <-w.input:
|
||||
switch in.op {
|
||||
case opAddWatch:
|
||||
in.reply <- w.addWatch(in.path, uint64(in.flags))
|
||||
case opRemoveWatch:
|
||||
in.reply <- w.remWatch(in.path)
|
||||
}
|
||||
default:
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
switch qErr {
|
||||
case windows.ERROR_MORE_DATA:
|
||||
if watch == nil {
|
||||
w.sendError(errors.New("ERROR_MORE_DATA has unexpectedly null lpOverlapped buffer"))
|
||||
} else {
|
||||
// The i/o succeeded but the buffer is full.
|
||||
// In theory we should be building up a full packet.
|
||||
// In practice we can get away with just carrying on.
|
||||
n = uint32(unsafe.Sizeof(watch.buf))
|
||||
}
|
||||
case windows.ERROR_ACCESS_DENIED:
|
||||
// Watched directory was probably removed
|
||||
w.sendEvent(watch.path, watch.mask&sysFSDELETESELF)
|
||||
w.deleteWatch(watch)
|
||||
w.startRead(watch)
|
||||
continue
|
||||
case windows.ERROR_OPERATION_ABORTED:
|
||||
// CancelIo was called on this handle
|
||||
continue
|
||||
default:
|
||||
w.sendError(os.NewSyscallError("GetQueuedCompletionPort", qErr))
|
||||
continue
|
||||
case nil:
|
||||
}
|
||||
|
||||
var offset uint32
|
||||
for {
|
||||
if n == 0 {
|
||||
w.sendError(errors.New("short read in readEvents()"))
|
||||
break
|
||||
}
|
||||
|
||||
// Point "raw" to the event in the buffer
|
||||
raw := (*windows.FileNotifyInformation)(unsafe.Pointer(&watch.buf[offset]))
|
||||
|
||||
// Create a buf that is the size of the path name
|
||||
size := int(raw.FileNameLength / 2)
|
||||
var buf []uint16
|
||||
// TODO: Use unsafe.Slice in Go 1.17; https://stackoverflow.com/questions/51187973
|
||||
sh := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
|
||||
sh.Data = uintptr(unsafe.Pointer(&raw.FileName))
|
||||
sh.Len = size
|
||||
sh.Cap = size
|
||||
name := windows.UTF16ToString(buf)
|
||||
fullname := filepath.Join(watch.path, name)
|
||||
|
||||
var mask uint64
|
||||
switch raw.Action {
|
||||
case windows.FILE_ACTION_REMOVED:
|
||||
mask = sysFSDELETESELF
|
||||
case windows.FILE_ACTION_MODIFIED:
|
||||
mask = sysFSMODIFY
|
||||
case windows.FILE_ACTION_RENAMED_OLD_NAME:
|
||||
watch.rename = name
|
||||
case windows.FILE_ACTION_RENAMED_NEW_NAME:
|
||||
// Update saved path of all sub-watches.
|
||||
old := filepath.Join(watch.path, watch.rename)
|
||||
w.mu.Lock()
|
||||
for _, watchMap := range w.watches {
|
||||
for _, ww := range watchMap {
|
||||
if strings.HasPrefix(ww.path, old) {
|
||||
ww.path = filepath.Join(fullname, strings.TrimPrefix(ww.path, old))
|
||||
}
|
||||
}
|
||||
}
|
||||
w.mu.Unlock()
|
||||
|
||||
if watch.names[watch.rename] != 0 {
|
||||
watch.names[name] |= watch.names[watch.rename]
|
||||
delete(watch.names, watch.rename)
|
||||
mask = sysFSMOVESELF
|
||||
}
|
||||
}
|
||||
|
||||
sendNameEvent := func() {
|
||||
w.sendEvent(fullname, watch.names[name]&mask)
|
||||
}
|
||||
if raw.Action != windows.FILE_ACTION_RENAMED_NEW_NAME {
|
||||
sendNameEvent()
|
||||
}
|
||||
if raw.Action == windows.FILE_ACTION_REMOVED {
|
||||
w.sendEvent(fullname, watch.names[name]&sysFSIGNORED)
|
||||
delete(watch.names, name)
|
||||
}
|
||||
|
||||
w.sendEvent(fullname, watch.mask&w.toFSnotifyFlags(raw.Action))
|
||||
if raw.Action == windows.FILE_ACTION_RENAMED_NEW_NAME {
|
||||
fullname = filepath.Join(watch.path, watch.rename)
|
||||
sendNameEvent()
|
||||
}
|
||||
|
||||
// Move to the next event in the buffer
|
||||
if raw.NextEntryOffset == 0 {
|
||||
break
|
||||
}
|
||||
offset += raw.NextEntryOffset
|
||||
|
||||
// Error!
|
||||
if offset >= n {
|
||||
w.sendError(errors.New(
|
||||
"Windows system assumed buffer larger than it is, events have likely been missed."))
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if err := w.startRead(watch); err != nil {
|
||||
w.sendError(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (w *Watcher) toWindowsFlags(mask uint64) uint32 {
|
||||
var m uint32
|
||||
if mask&sysFSMODIFY != 0 {
|
||||
m |= windows.FILE_NOTIFY_CHANGE_LAST_WRITE
|
||||
}
|
||||
if mask&sysFSATTRIB != 0 {
|
||||
m |= windows.FILE_NOTIFY_CHANGE_ATTRIBUTES
|
||||
}
|
||||
if mask&(sysFSMOVE|sysFSCREATE|sysFSDELETE) != 0 {
|
||||
m |= windows.FILE_NOTIFY_CHANGE_FILE_NAME | windows.FILE_NOTIFY_CHANGE_DIR_NAME
|
||||
}
|
||||
return m
|
||||
}
|
||||
|
||||
func (w *Watcher) toFSnotifyFlags(action uint32) uint64 {
|
||||
switch action {
|
||||
case windows.FILE_ACTION_ADDED:
|
||||
return sysFSCREATE
|
||||
case windows.FILE_ACTION_REMOVED:
|
||||
return sysFSDELETE
|
||||
case windows.FILE_ACTION_MODIFIED:
|
||||
return sysFSMODIFY
|
||||
case windows.FILE_ACTION_RENAMED_OLD_NAME:
|
||||
return sysFSMOVEDFROM
|
||||
case windows.FILE_ACTION_RENAMED_NEW_NAME:
|
||||
return sysFSMOVEDTO
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
|
@ -1,38 +0,0 @@
|
|||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build solaris
|
||||
// +build solaris
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"errors"
|
||||
)
|
||||
|
||||
// Watcher watches a set of files, delivering events to a channel.
|
||||
type Watcher struct {
|
||||
Events chan Event
|
||||
Errors chan error
|
||||
}
|
||||
|
||||
// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
return nil, errors.New("FEN based watcher not yet supported for fsnotify\n")
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Add starts watching the named file or directory (non-recursively).
|
||||
func (w *Watcher) Add(name string) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Remove stops watching the the named file or directory (non-recursively).
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
return nil
|
||||
}
|
||||
|
|
@ -1,29 +1,37 @@
|
|||
// Copyright 2012 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build !plan9
|
||||
// +build !plan9
|
||||
|
||||
// Package fsnotify provides a platform-independent interface for file system notifications.
|
||||
// Package fsnotify provides a cross-platform interface for file system
|
||||
// notifications.
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"errors"
|
||||
"fmt"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Event represents a single file system notification.
|
||||
// Event represents a file system notification.
|
||||
type Event struct {
|
||||
Name string // Relative path to the file or directory.
|
||||
Op Op // File operation that triggered the event.
|
||||
// Path to the file or directory.
|
||||
//
|
||||
// Paths are relative to the input; for example with Add("dir") the Name
|
||||
// will be set to "dir/file" if you create that file, but if you use
|
||||
// Add("/path/to/dir") it will be "/path/to/dir/file".
|
||||
Name string
|
||||
|
||||
// File operation that triggered the event.
|
||||
//
|
||||
// This is a bitmask and some systems may send multiple operations at once.
|
||||
// Use the Event.Has() method instead of comparing with ==.
|
||||
Op Op
|
||||
}
|
||||
|
||||
// Op describes a set of file operations.
|
||||
type Op uint32
|
||||
|
||||
// These are the generalized file operations that can trigger a notification.
|
||||
// The operations fsnotify can trigger; see the documentation on [Watcher] for a
|
||||
// full description, and check them with [Event.Has].
|
||||
const (
|
||||
Create Op = 1 << iota
|
||||
Write
|
||||
|
|
@ -32,38 +40,42 @@ const (
|
|||
Chmod
|
||||
)
|
||||
|
||||
func (op Op) String() string {
|
||||
// Use a buffer for efficient string concatenation
|
||||
var buffer bytes.Buffer
|
||||
|
||||
if op&Create == Create {
|
||||
buffer.WriteString("|CREATE")
|
||||
}
|
||||
if op&Remove == Remove {
|
||||
buffer.WriteString("|REMOVE")
|
||||
}
|
||||
if op&Write == Write {
|
||||
buffer.WriteString("|WRITE")
|
||||
}
|
||||
if op&Rename == Rename {
|
||||
buffer.WriteString("|RENAME")
|
||||
}
|
||||
if op&Chmod == Chmod {
|
||||
buffer.WriteString("|CHMOD")
|
||||
}
|
||||
if buffer.Len() == 0 {
|
||||
return ""
|
||||
}
|
||||
return buffer.String()[1:] // Strip leading pipe
|
||||
}
|
||||
|
||||
// String returns a string representation of the event in the form
|
||||
// "file: REMOVE|WRITE|..."
|
||||
func (e Event) String() string {
|
||||
return fmt.Sprintf("%q: %s", e.Name, e.Op.String())
|
||||
}
|
||||
|
||||
// Common errors that can be reported by a watcher
|
||||
var (
|
||||
ErrEventOverflow = errors.New("fsnotify queue overflow")
|
||||
ErrNonExistentWatch = errors.New("can't remove non-existent watcher")
|
||||
ErrEventOverflow = errors.New("fsnotify queue overflow")
|
||||
)
|
||||
|
||||
func (op Op) String() string {
|
||||
var b strings.Builder
|
||||
if op.Has(Create) {
|
||||
b.WriteString("|CREATE")
|
||||
}
|
||||
if op.Has(Remove) {
|
||||
b.WriteString("|REMOVE")
|
||||
}
|
||||
if op.Has(Write) {
|
||||
b.WriteString("|WRITE")
|
||||
}
|
||||
if op.Has(Rename) {
|
||||
b.WriteString("|RENAME")
|
||||
}
|
||||
if op.Has(Chmod) {
|
||||
b.WriteString("|CHMOD")
|
||||
}
|
||||
if b.Len() == 0 {
|
||||
return "[no events]"
|
||||
}
|
||||
return b.String()[1:]
|
||||
}
|
||||
|
||||
// Has reports if this operation has the given operation.
|
||||
func (o Op) Has(h Op) bool { return o&h == h }
|
||||
|
||||
// Has reports if this event has the given operation.
|
||||
func (e Event) Has(op Op) bool { return e.Op.Has(op) }
|
||||
|
||||
// String returns a string representation of the event with their path.
|
||||
func (e Event) String() string {
|
||||
return fmt.Sprintf("%-13s %q", e.Op.String(), e.Name)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,36 +0,0 @@
|
|||
// Copyright 2022 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build !darwin && !dragonfly && !freebsd && !openbsd && !linux && !netbsd && !solaris && !windows
|
||||
// +build !darwin,!dragonfly,!freebsd,!openbsd,!linux,!netbsd,!solaris,!windows
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"runtime"
|
||||
)
|
||||
|
||||
// Watcher watches a set of files, delivering events to a channel.
|
||||
type Watcher struct{}
|
||||
|
||||
// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
return nil, fmt.Errorf("fsnotify not supported on %s", runtime.GOOS)
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Add starts watching the named file or directory (non-recursively).
|
||||
func (w *Watcher) Add(name string) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Remove stops watching the the named file or directory (non-recursively).
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
return nil
|
||||
}
|
||||
|
|
@ -1,351 +0,0 @@
|
|||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build linux
|
||||
// +build linux
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strings"
|
||||
"sync"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// Watcher watches a set of files, delivering events to a channel.
|
||||
type Watcher struct {
|
||||
Events chan Event
|
||||
Errors chan error
|
||||
mu sync.Mutex // Map access
|
||||
fd int
|
||||
poller *fdPoller
|
||||
watches map[string]*watch // Map of inotify watches (key: path)
|
||||
paths map[int]string // Map of watched paths (key: watch descriptor)
|
||||
done chan struct{} // Channel for sending a "quit message" to the reader goroutine
|
||||
doneResp chan struct{} // Channel to respond to Close
|
||||
}
|
||||
|
||||
// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
// Create inotify fd
|
||||
fd, errno := unix.InotifyInit1(unix.IN_CLOEXEC)
|
||||
if fd == -1 {
|
||||
return nil, errno
|
||||
}
|
||||
// Create epoll
|
||||
poller, err := newFdPoller(fd)
|
||||
if err != nil {
|
||||
unix.Close(fd)
|
||||
return nil, err
|
||||
}
|
||||
w := &Watcher{
|
||||
fd: fd,
|
||||
poller: poller,
|
||||
watches: make(map[string]*watch),
|
||||
paths: make(map[int]string),
|
||||
Events: make(chan Event),
|
||||
Errors: make(chan error),
|
||||
done: make(chan struct{}),
|
||||
doneResp: make(chan struct{}),
|
||||
}
|
||||
|
||||
go w.readEvents()
|
||||
return w, nil
|
||||
}
|
||||
|
||||
func (w *Watcher) isClosed() bool {
|
||||
select {
|
||||
case <-w.done:
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
if w.isClosed() {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Send 'close' signal to goroutine, and set the Watcher to closed.
|
||||
close(w.done)
|
||||
|
||||
// Wake up goroutine
|
||||
w.poller.wake()
|
||||
|
||||
// Wait for goroutine to close
|
||||
<-w.doneResp
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Add starts watching the named file or directory (non-recursively).
|
||||
func (w *Watcher) Add(name string) error {
|
||||
name = filepath.Clean(name)
|
||||
if w.isClosed() {
|
||||
return errors.New("inotify instance already closed")
|
||||
}
|
||||
|
||||
const agnosticEvents = unix.IN_MOVED_TO | unix.IN_MOVED_FROM |
|
||||
unix.IN_CREATE | unix.IN_ATTRIB | unix.IN_MODIFY |
|
||||
unix.IN_MOVE_SELF | unix.IN_DELETE | unix.IN_DELETE_SELF
|
||||
|
||||
var flags uint32 = agnosticEvents
|
||||
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
watchEntry := w.watches[name]
|
||||
if watchEntry != nil {
|
||||
flags |= watchEntry.flags | unix.IN_MASK_ADD
|
||||
}
|
||||
wd, errno := unix.InotifyAddWatch(w.fd, name, flags)
|
||||
if wd == -1 {
|
||||
return errno
|
||||
}
|
||||
|
||||
if watchEntry == nil {
|
||||
w.watches[name] = &watch{wd: uint32(wd), flags: flags}
|
||||
w.paths[wd] = name
|
||||
} else {
|
||||
watchEntry.wd = uint32(wd)
|
||||
watchEntry.flags = flags
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Remove stops watching the named file or directory (non-recursively).
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
name = filepath.Clean(name)
|
||||
|
||||
// Fetch the watch.
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
watch, ok := w.watches[name]
|
||||
|
||||
// Remove it from inotify.
|
||||
if !ok {
|
||||
return fmt.Errorf("can't remove non-existent inotify watch for: %s", name)
|
||||
}
|
||||
|
||||
// We successfully removed the watch if InotifyRmWatch doesn't return an
|
||||
// error, we need to clean up our internal state to ensure it matches
|
||||
// inotify's kernel state.
|
||||
delete(w.paths, int(watch.wd))
|
||||
delete(w.watches, name)
|
||||
|
||||
// inotify_rm_watch will return EINVAL if the file has been deleted;
|
||||
// the inotify will already have been removed.
|
||||
// watches and pathes are deleted in ignoreLinux() implicitly and asynchronously
|
||||
// by calling inotify_rm_watch() below. e.g. readEvents() goroutine receives IN_IGNORE
|
||||
// so that EINVAL means that the wd is being rm_watch()ed or its file removed
|
||||
// by another thread and we have not received IN_IGNORE event.
|
||||
success, errno := unix.InotifyRmWatch(w.fd, watch.wd)
|
||||
if success == -1 {
|
||||
// TODO: Perhaps it's not helpful to return an error here in every case.
|
||||
// the only two possible errors are:
|
||||
// EBADF, which happens when w.fd is not a valid file descriptor of any kind.
|
||||
// EINVAL, which is when fd is not an inotify descriptor or wd is not a valid watch descriptor.
|
||||
// Watch descriptors are invalidated when they are removed explicitly or implicitly;
|
||||
// explicitly by inotify_rm_watch, implicitly when the file they are watching is deleted.
|
||||
return errno
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// WatchList returns the directories and files that are being monitered.
|
||||
func (w *Watcher) WatchList() []string {
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
|
||||
entries := make([]string, 0, len(w.watches))
|
||||
for pathname := range w.watches {
|
||||
entries = append(entries, pathname)
|
||||
}
|
||||
|
||||
return entries
|
||||
}
|
||||
|
||||
type watch struct {
|
||||
wd uint32 // Watch descriptor (as returned by the inotify_add_watch() syscall)
|
||||
flags uint32 // inotify flags of this watch (see inotify(7) for the list of valid flags)
|
||||
}
|
||||
|
||||
// readEvents reads from the inotify file descriptor, converts the
|
||||
// received events into Event objects and sends them via the Events channel
|
||||
func (w *Watcher) readEvents() {
|
||||
var (
|
||||
buf [unix.SizeofInotifyEvent * 4096]byte // Buffer for a maximum of 4096 raw events
|
||||
n int // Number of bytes read with read()
|
||||
errno error // Syscall errno
|
||||
ok bool // For poller.wait
|
||||
)
|
||||
|
||||
defer close(w.doneResp)
|
||||
defer close(w.Errors)
|
||||
defer close(w.Events)
|
||||
defer unix.Close(w.fd)
|
||||
defer w.poller.close()
|
||||
|
||||
for {
|
||||
// See if we have been closed.
|
||||
if w.isClosed() {
|
||||
return
|
||||
}
|
||||
|
||||
ok, errno = w.poller.wait()
|
||||
if errno != nil {
|
||||
select {
|
||||
case w.Errors <- errno:
|
||||
case <-w.done:
|
||||
return
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
|
||||
n, errno = unix.Read(w.fd, buf[:])
|
||||
// If a signal interrupted execution, see if we've been asked to close, and try again.
|
||||
// http://man7.org/linux/man-pages/man7/signal.7.html :
|
||||
// "Before Linux 3.8, reads from an inotify(7) file descriptor were not restartable"
|
||||
if errno == unix.EINTR {
|
||||
continue
|
||||
}
|
||||
|
||||
// unix.Read might have been woken up by Close. If so, we're done.
|
||||
if w.isClosed() {
|
||||
return
|
||||
}
|
||||
|
||||
if n < unix.SizeofInotifyEvent {
|
||||
var err error
|
||||
if n == 0 {
|
||||
// If EOF is received. This should really never happen.
|
||||
err = io.EOF
|
||||
} else if n < 0 {
|
||||
// If an error occurred while reading.
|
||||
err = errno
|
||||
} else {
|
||||
// Read was too short.
|
||||
err = errors.New("notify: short read in readEvents()")
|
||||
}
|
||||
select {
|
||||
case w.Errors <- err:
|
||||
case <-w.done:
|
||||
return
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
var offset uint32
|
||||
// We don't know how many events we just read into the buffer
|
||||
// While the offset points to at least one whole event...
|
||||
for offset <= uint32(n-unix.SizeofInotifyEvent) {
|
||||
// Point "raw" to the event in the buffer
|
||||
raw := (*unix.InotifyEvent)(unsafe.Pointer(&buf[offset]))
|
||||
|
||||
mask := uint32(raw.Mask)
|
||||
nameLen := uint32(raw.Len)
|
||||
|
||||
if mask&unix.IN_Q_OVERFLOW != 0 {
|
||||
select {
|
||||
case w.Errors <- ErrEventOverflow:
|
||||
case <-w.done:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// If the event happened to the watched directory or the watched file, the kernel
|
||||
// doesn't append the filename to the event, but we would like to always fill the
|
||||
// the "Name" field with a valid filename. We retrieve the path of the watch from
|
||||
// the "paths" map.
|
||||
w.mu.Lock()
|
||||
name, ok := w.paths[int(raw.Wd)]
|
||||
// IN_DELETE_SELF occurs when the file/directory being watched is removed.
|
||||
// This is a sign to clean up the maps, otherwise we are no longer in sync
|
||||
// with the inotify kernel state which has already deleted the watch
|
||||
// automatically.
|
||||
if ok && mask&unix.IN_DELETE_SELF == unix.IN_DELETE_SELF {
|
||||
delete(w.paths, int(raw.Wd))
|
||||
delete(w.watches, name)
|
||||
}
|
||||
w.mu.Unlock()
|
||||
|
||||
if nameLen > 0 {
|
||||
// Point "bytes" at the first byte of the filename
|
||||
bytes := (*[unix.PathMax]byte)(unsafe.Pointer(&buf[offset+unix.SizeofInotifyEvent]))[:nameLen:nameLen]
|
||||
// The filename is padded with NULL bytes. TrimRight() gets rid of those.
|
||||
name += "/" + strings.TrimRight(string(bytes[0:nameLen]), "\000")
|
||||
}
|
||||
|
||||
event := newEvent(name, mask)
|
||||
|
||||
// Send the events that are not ignored on the events channel
|
||||
if !event.ignoreLinux(mask) {
|
||||
select {
|
||||
case w.Events <- event:
|
||||
case <-w.done:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// Move to the next event in the buffer
|
||||
offset += unix.SizeofInotifyEvent + nameLen
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Certain types of events can be "ignored" and not sent over the Events
|
||||
// channel. Such as events marked ignore by the kernel, or MODIFY events
|
||||
// against files that do not exist.
|
||||
func (e *Event) ignoreLinux(mask uint32) bool {
|
||||
// Ignore anything the inotify API says to ignore
|
||||
if mask&unix.IN_IGNORED == unix.IN_IGNORED {
|
||||
return true
|
||||
}
|
||||
|
||||
// If the event is not a DELETE or RENAME, the file must exist.
|
||||
// Otherwise the event is ignored.
|
||||
// *Note*: this was put in place because it was seen that a MODIFY
|
||||
// event was sent after the DELETE. This ignores that MODIFY and
|
||||
// assumes a DELETE will come or has come if the file doesn't exist.
|
||||
if !(e.Op&Remove == Remove || e.Op&Rename == Rename) {
|
||||
_, statErr := os.Lstat(e.Name)
|
||||
return os.IsNotExist(statErr)
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// newEvent returns an platform-independent Event based on an inotify mask.
|
||||
func newEvent(name string, mask uint32) Event {
|
||||
e := Event{Name: name}
|
||||
if mask&unix.IN_CREATE == unix.IN_CREATE || mask&unix.IN_MOVED_TO == unix.IN_MOVED_TO {
|
||||
e.Op |= Create
|
||||
}
|
||||
if mask&unix.IN_DELETE_SELF == unix.IN_DELETE_SELF || mask&unix.IN_DELETE == unix.IN_DELETE {
|
||||
e.Op |= Remove
|
||||
}
|
||||
if mask&unix.IN_MODIFY == unix.IN_MODIFY {
|
||||
e.Op |= Write
|
||||
}
|
||||
if mask&unix.IN_MOVE_SELF == unix.IN_MOVE_SELF || mask&unix.IN_MOVED_FROM == unix.IN_MOVED_FROM {
|
||||
e.Op |= Rename
|
||||
}
|
||||
if mask&unix.IN_ATTRIB == unix.IN_ATTRIB {
|
||||
e.Op |= Chmod
|
||||
}
|
||||
return e
|
||||
}
|
||||
|
|
@ -1,187 +0,0 @@
|
|||
// Copyright 2015 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build linux
|
||||
// +build linux
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"errors"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
type fdPoller struct {
|
||||
fd int // File descriptor (as returned by the inotify_init() syscall)
|
||||
epfd int // Epoll file descriptor
|
||||
pipe [2]int // Pipe for waking up
|
||||
}
|
||||
|
||||
func emptyPoller(fd int) *fdPoller {
|
||||
poller := new(fdPoller)
|
||||
poller.fd = fd
|
||||
poller.epfd = -1
|
||||
poller.pipe[0] = -1
|
||||
poller.pipe[1] = -1
|
||||
return poller
|
||||
}
|
||||
|
||||
// Create a new inotify poller.
|
||||
// This creates an inotify handler, and an epoll handler.
|
||||
func newFdPoller(fd int) (*fdPoller, error) {
|
||||
var errno error
|
||||
poller := emptyPoller(fd)
|
||||
defer func() {
|
||||
if errno != nil {
|
||||
poller.close()
|
||||
}
|
||||
}()
|
||||
|
||||
// Create epoll fd
|
||||
poller.epfd, errno = unix.EpollCreate1(unix.EPOLL_CLOEXEC)
|
||||
if poller.epfd == -1 {
|
||||
return nil, errno
|
||||
}
|
||||
// Create pipe; pipe[0] is the read end, pipe[1] the write end.
|
||||
errno = unix.Pipe2(poller.pipe[:], unix.O_NONBLOCK|unix.O_CLOEXEC)
|
||||
if errno != nil {
|
||||
return nil, errno
|
||||
}
|
||||
|
||||
// Register inotify fd with epoll
|
||||
event := unix.EpollEvent{
|
||||
Fd: int32(poller.fd),
|
||||
Events: unix.EPOLLIN,
|
||||
}
|
||||
errno = unix.EpollCtl(poller.epfd, unix.EPOLL_CTL_ADD, poller.fd, &event)
|
||||
if errno != nil {
|
||||
return nil, errno
|
||||
}
|
||||
|
||||
// Register pipe fd with epoll
|
||||
event = unix.EpollEvent{
|
||||
Fd: int32(poller.pipe[0]),
|
||||
Events: unix.EPOLLIN,
|
||||
}
|
||||
errno = unix.EpollCtl(poller.epfd, unix.EPOLL_CTL_ADD, poller.pipe[0], &event)
|
||||
if errno != nil {
|
||||
return nil, errno
|
||||
}
|
||||
|
||||
return poller, nil
|
||||
}
|
||||
|
||||
// Wait using epoll.
|
||||
// Returns true if something is ready to be read,
|
||||
// false if there is not.
|
||||
func (poller *fdPoller) wait() (bool, error) {
|
||||
// 3 possible events per fd, and 2 fds, makes a maximum of 6 events.
|
||||
// I don't know whether epoll_wait returns the number of events returned,
|
||||
// or the total number of events ready.
|
||||
// I decided to catch both by making the buffer one larger than the maximum.
|
||||
events := make([]unix.EpollEvent, 7)
|
||||
for {
|
||||
n, errno := unix.EpollWait(poller.epfd, events, -1)
|
||||
if n == -1 {
|
||||
if errno == unix.EINTR {
|
||||
continue
|
||||
}
|
||||
return false, errno
|
||||
}
|
||||
if n == 0 {
|
||||
// If there are no events, try again.
|
||||
continue
|
||||
}
|
||||
if n > 6 {
|
||||
// This should never happen. More events were returned than should be possible.
|
||||
return false, errors.New("epoll_wait returned more events than I know what to do with")
|
||||
}
|
||||
ready := events[:n]
|
||||
epollhup := false
|
||||
epollerr := false
|
||||
epollin := false
|
||||
for _, event := range ready {
|
||||
if event.Fd == int32(poller.fd) {
|
||||
if event.Events&unix.EPOLLHUP != 0 {
|
||||
// This should not happen, but if it does, treat it as a wakeup.
|
||||
epollhup = true
|
||||
}
|
||||
if event.Events&unix.EPOLLERR != 0 {
|
||||
// If an error is waiting on the file descriptor, we should pretend
|
||||
// something is ready to read, and let unix.Read pick up the error.
|
||||
epollerr = true
|
||||
}
|
||||
if event.Events&unix.EPOLLIN != 0 {
|
||||
// There is data to read.
|
||||
epollin = true
|
||||
}
|
||||
}
|
||||
if event.Fd == int32(poller.pipe[0]) {
|
||||
if event.Events&unix.EPOLLHUP != 0 {
|
||||
// Write pipe descriptor was closed, by us. This means we're closing down the
|
||||
// watcher, and we should wake up.
|
||||
}
|
||||
if event.Events&unix.EPOLLERR != 0 {
|
||||
// If an error is waiting on the pipe file descriptor.
|
||||
// This is an absolute mystery, and should never ever happen.
|
||||
return false, errors.New("Error on the pipe descriptor.")
|
||||
}
|
||||
if event.Events&unix.EPOLLIN != 0 {
|
||||
// This is a regular wakeup, so we have to clear the buffer.
|
||||
err := poller.clearWake()
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if epollhup || epollerr || epollin {
|
||||
return true, nil
|
||||
}
|
||||
return false, nil
|
||||
}
|
||||
}
|
||||
|
||||
// Close the write end of the poller.
|
||||
func (poller *fdPoller) wake() error {
|
||||
buf := make([]byte, 1)
|
||||
n, errno := unix.Write(poller.pipe[1], buf)
|
||||
if n == -1 {
|
||||
if errno == unix.EAGAIN {
|
||||
// Buffer is full, poller will wake.
|
||||
return nil
|
||||
}
|
||||
return errno
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (poller *fdPoller) clearWake() error {
|
||||
// You have to be woken up a LOT in order to get to 100!
|
||||
buf := make([]byte, 100)
|
||||
n, errno := unix.Read(poller.pipe[0], buf)
|
||||
if n == -1 {
|
||||
if errno == unix.EAGAIN {
|
||||
// Buffer is empty, someone else cleared our wake.
|
||||
return nil
|
||||
}
|
||||
return errno
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Close all poller file descriptors, but not the one passed to it.
|
||||
func (poller *fdPoller) close() {
|
||||
if poller.pipe[1] != -1 {
|
||||
unix.Close(poller.pipe[1])
|
||||
}
|
||||
if poller.pipe[0] != -1 {
|
||||
unix.Close(poller.pipe[0])
|
||||
}
|
||||
if poller.epfd != -1 {
|
||||
unix.Close(poller.epfd)
|
||||
}
|
||||
}
|
||||
|
|
@ -1,535 +0,0 @@
|
|||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build freebsd || openbsd || netbsd || dragonfly || darwin
|
||||
// +build freebsd openbsd netbsd dragonfly darwin
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// Watcher watches a set of files, delivering events to a channel.
|
||||
type Watcher struct {
|
||||
Events chan Event
|
||||
Errors chan error
|
||||
done chan struct{} // Channel for sending a "quit message" to the reader goroutine
|
||||
|
||||
kq int // File descriptor (as returned by the kqueue() syscall).
|
||||
|
||||
mu sync.Mutex // Protects access to watcher data
|
||||
watches map[string]int // Map of watched file descriptors (key: path).
|
||||
externalWatches map[string]bool // Map of watches added by user of the library.
|
||||
dirFlags map[string]uint32 // Map of watched directories to fflags used in kqueue.
|
||||
paths map[int]pathInfo // Map file descriptors to path names for processing kqueue events.
|
||||
fileExists map[string]bool // Keep track of if we know this file exists (to stop duplicate create events).
|
||||
isClosed bool // Set to true when Close() is first called
|
||||
}
|
||||
|
||||
type pathInfo struct {
|
||||
name string
|
||||
isDir bool
|
||||
}
|
||||
|
||||
// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
kq, err := kqueue()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
w := &Watcher{
|
||||
kq: kq,
|
||||
watches: make(map[string]int),
|
||||
dirFlags: make(map[string]uint32),
|
||||
paths: make(map[int]pathInfo),
|
||||
fileExists: make(map[string]bool),
|
||||
externalWatches: make(map[string]bool),
|
||||
Events: make(chan Event),
|
||||
Errors: make(chan error),
|
||||
done: make(chan struct{}),
|
||||
}
|
||||
|
||||
go w.readEvents()
|
||||
return w, nil
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
w.mu.Lock()
|
||||
if w.isClosed {
|
||||
w.mu.Unlock()
|
||||
return nil
|
||||
}
|
||||
w.isClosed = true
|
||||
|
||||
// copy paths to remove while locked
|
||||
var pathsToRemove = make([]string, 0, len(w.watches))
|
||||
for name := range w.watches {
|
||||
pathsToRemove = append(pathsToRemove, name)
|
||||
}
|
||||
w.mu.Unlock()
|
||||
// unlock before calling Remove, which also locks
|
||||
|
||||
for _, name := range pathsToRemove {
|
||||
w.Remove(name)
|
||||
}
|
||||
|
||||
// send a "quit" message to the reader goroutine
|
||||
close(w.done)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Add starts watching the named file or directory (non-recursively).
|
||||
func (w *Watcher) Add(name string) error {
|
||||
w.mu.Lock()
|
||||
w.externalWatches[name] = true
|
||||
w.mu.Unlock()
|
||||
_, err := w.addWatch(name, noteAllEvents)
|
||||
return err
|
||||
}
|
||||
|
||||
// Remove stops watching the the named file or directory (non-recursively).
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
name = filepath.Clean(name)
|
||||
w.mu.Lock()
|
||||
watchfd, ok := w.watches[name]
|
||||
w.mu.Unlock()
|
||||
if !ok {
|
||||
return fmt.Errorf("can't remove non-existent kevent watch for: %s", name)
|
||||
}
|
||||
|
||||
const registerRemove = unix.EV_DELETE
|
||||
if err := register(w.kq, []int{watchfd}, registerRemove, 0); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
unix.Close(watchfd)
|
||||
|
||||
w.mu.Lock()
|
||||
isDir := w.paths[watchfd].isDir
|
||||
delete(w.watches, name)
|
||||
delete(w.paths, watchfd)
|
||||
delete(w.dirFlags, name)
|
||||
w.mu.Unlock()
|
||||
|
||||
// Find all watched paths that are in this directory that are not external.
|
||||
if isDir {
|
||||
var pathsToRemove []string
|
||||
w.mu.Lock()
|
||||
for _, path := range w.paths {
|
||||
wdir, _ := filepath.Split(path.name)
|
||||
if filepath.Clean(wdir) == name {
|
||||
if !w.externalWatches[path.name] {
|
||||
pathsToRemove = append(pathsToRemove, path.name)
|
||||
}
|
||||
}
|
||||
}
|
||||
w.mu.Unlock()
|
||||
for _, name := range pathsToRemove {
|
||||
// Since these are internal, not much sense in propagating error
|
||||
// to the user, as that will just confuse them with an error about
|
||||
// a path they did not explicitly watch themselves.
|
||||
w.Remove(name)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// WatchList returns the directories and files that are being monitered.
|
||||
func (w *Watcher) WatchList() []string {
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
|
||||
entries := make([]string, 0, len(w.watches))
|
||||
for pathname := range w.watches {
|
||||
entries = append(entries, pathname)
|
||||
}
|
||||
|
||||
return entries
|
||||
}
|
||||
|
||||
// Watch all events (except NOTE_EXTEND, NOTE_LINK, NOTE_REVOKE)
|
||||
const noteAllEvents = unix.NOTE_DELETE | unix.NOTE_WRITE | unix.NOTE_ATTRIB | unix.NOTE_RENAME
|
||||
|
||||
// keventWaitTime to block on each read from kevent
|
||||
var keventWaitTime = durationToTimespec(100 * time.Millisecond)
|
||||
|
||||
// addWatch adds name to the watched file set.
|
||||
// The flags are interpreted as described in kevent(2).
|
||||
// Returns the real path to the file which was added, if any, which may be different from the one passed in the case of symlinks.
|
||||
func (w *Watcher) addWatch(name string, flags uint32) (string, error) {
|
||||
var isDir bool
|
||||
// Make ./name and name equivalent
|
||||
name = filepath.Clean(name)
|
||||
|
||||
w.mu.Lock()
|
||||
if w.isClosed {
|
||||
w.mu.Unlock()
|
||||
return "", errors.New("kevent instance already closed")
|
||||
}
|
||||
watchfd, alreadyWatching := w.watches[name]
|
||||
// We already have a watch, but we can still override flags.
|
||||
if alreadyWatching {
|
||||
isDir = w.paths[watchfd].isDir
|
||||
}
|
||||
w.mu.Unlock()
|
||||
|
||||
if !alreadyWatching {
|
||||
fi, err := os.Lstat(name)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// Don't watch sockets.
|
||||
if fi.Mode()&os.ModeSocket == os.ModeSocket {
|
||||
return "", nil
|
||||
}
|
||||
|
||||
// Don't watch named pipes.
|
||||
if fi.Mode()&os.ModeNamedPipe == os.ModeNamedPipe {
|
||||
return "", nil
|
||||
}
|
||||
|
||||
// Follow Symlinks
|
||||
// Unfortunately, Linux can add bogus symlinks to watch list without
|
||||
// issue, and Windows can't do symlinks period (AFAIK). To maintain
|
||||
// consistency, we will act like everything is fine. There will simply
|
||||
// be no file events for broken symlinks.
|
||||
// Hence the returns of nil on errors.
|
||||
if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
|
||||
name, err = filepath.EvalSymlinks(name)
|
||||
if err != nil {
|
||||
return "", nil
|
||||
}
|
||||
|
||||
w.mu.Lock()
|
||||
_, alreadyWatching = w.watches[name]
|
||||
w.mu.Unlock()
|
||||
|
||||
if alreadyWatching {
|
||||
return name, nil
|
||||
}
|
||||
|
||||
fi, err = os.Lstat(name)
|
||||
if err != nil {
|
||||
return "", nil
|
||||
}
|
||||
}
|
||||
|
||||
watchfd, err = unix.Open(name, openMode, 0700)
|
||||
if watchfd == -1 {
|
||||
return "", err
|
||||
}
|
||||
|
||||
isDir = fi.IsDir()
|
||||
}
|
||||
|
||||
const registerAdd = unix.EV_ADD | unix.EV_CLEAR | unix.EV_ENABLE
|
||||
if err := register(w.kq, []int{watchfd}, registerAdd, flags); err != nil {
|
||||
unix.Close(watchfd)
|
||||
return "", err
|
||||
}
|
||||
|
||||
if !alreadyWatching {
|
||||
w.mu.Lock()
|
||||
w.watches[name] = watchfd
|
||||
w.paths[watchfd] = pathInfo{name: name, isDir: isDir}
|
||||
w.mu.Unlock()
|
||||
}
|
||||
|
||||
if isDir {
|
||||
// Watch the directory if it has not been watched before,
|
||||
// or if it was watched before, but perhaps only a NOTE_DELETE (watchDirectoryFiles)
|
||||
w.mu.Lock()
|
||||
|
||||
watchDir := (flags&unix.NOTE_WRITE) == unix.NOTE_WRITE &&
|
||||
(!alreadyWatching || (w.dirFlags[name]&unix.NOTE_WRITE) != unix.NOTE_WRITE)
|
||||
// Store flags so this watch can be updated later
|
||||
w.dirFlags[name] = flags
|
||||
w.mu.Unlock()
|
||||
|
||||
if watchDir {
|
||||
if err := w.watchDirectoryFiles(name); err != nil {
|
||||
return "", err
|
||||
}
|
||||
}
|
||||
}
|
||||
return name, nil
|
||||
}
|
||||
|
||||
// readEvents reads from kqueue and converts the received kevents into
|
||||
// Event values that it sends down the Events channel.
|
||||
func (w *Watcher) readEvents() {
|
||||
eventBuffer := make([]unix.Kevent_t, 10)
|
||||
|
||||
loop:
|
||||
for {
|
||||
// See if there is a message on the "done" channel
|
||||
select {
|
||||
case <-w.done:
|
||||
break loop
|
||||
default:
|
||||
}
|
||||
|
||||
// Get new events
|
||||
kevents, err := read(w.kq, eventBuffer, &keventWaitTime)
|
||||
// EINTR is okay, the syscall was interrupted before timeout expired.
|
||||
if err != nil && err != unix.EINTR {
|
||||
select {
|
||||
case w.Errors <- err:
|
||||
case <-w.done:
|
||||
break loop
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
// Flush the events we received to the Events channel
|
||||
for len(kevents) > 0 {
|
||||
kevent := &kevents[0]
|
||||
watchfd := int(kevent.Ident)
|
||||
mask := uint32(kevent.Fflags)
|
||||
w.mu.Lock()
|
||||
path := w.paths[watchfd]
|
||||
w.mu.Unlock()
|
||||
event := newEvent(path.name, mask)
|
||||
|
||||
if path.isDir && !(event.Op&Remove == Remove) {
|
||||
// Double check to make sure the directory exists. This can happen when
|
||||
// we do a rm -fr on a recursively watched folders and we receive a
|
||||
// modification event first but the folder has been deleted and later
|
||||
// receive the delete event
|
||||
if _, err := os.Lstat(event.Name); os.IsNotExist(err) {
|
||||
// mark is as delete event
|
||||
event.Op |= Remove
|
||||
}
|
||||
}
|
||||
|
||||
if event.Op&Rename == Rename || event.Op&Remove == Remove {
|
||||
w.Remove(event.Name)
|
||||
w.mu.Lock()
|
||||
delete(w.fileExists, event.Name)
|
||||
w.mu.Unlock()
|
||||
}
|
||||
|
||||
if path.isDir && event.Op&Write == Write && !(event.Op&Remove == Remove) {
|
||||
w.sendDirectoryChangeEvents(event.Name)
|
||||
} else {
|
||||
// Send the event on the Events channel.
|
||||
select {
|
||||
case w.Events <- event:
|
||||
case <-w.done:
|
||||
break loop
|
||||
}
|
||||
}
|
||||
|
||||
if event.Op&Remove == Remove {
|
||||
// Look for a file that may have overwritten this.
|
||||
// For example, mv f1 f2 will delete f2, then create f2.
|
||||
if path.isDir {
|
||||
fileDir := filepath.Clean(event.Name)
|
||||
w.mu.Lock()
|
||||
_, found := w.watches[fileDir]
|
||||
w.mu.Unlock()
|
||||
if found {
|
||||
// make sure the directory exists before we watch for changes. When we
|
||||
// do a recursive watch and perform rm -fr, the parent directory might
|
||||
// have gone missing, ignore the missing directory and let the
|
||||
// upcoming delete event remove the watch from the parent directory.
|
||||
if _, err := os.Lstat(fileDir); err == nil {
|
||||
w.sendDirectoryChangeEvents(fileDir)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
filePath := filepath.Clean(event.Name)
|
||||
if fileInfo, err := os.Lstat(filePath); err == nil {
|
||||
w.sendFileCreatedEventIfNew(filePath, fileInfo)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Move to next event
|
||||
kevents = kevents[1:]
|
||||
}
|
||||
}
|
||||
|
||||
// cleanup
|
||||
err := unix.Close(w.kq)
|
||||
if err != nil {
|
||||
// only way the previous loop breaks is if w.done was closed so we need to async send to w.Errors.
|
||||
select {
|
||||
case w.Errors <- err:
|
||||
default:
|
||||
}
|
||||
}
|
||||
close(w.Events)
|
||||
close(w.Errors)
|
||||
}
|
||||
|
||||
// newEvent returns an platform-independent Event based on kqueue Fflags.
|
||||
func newEvent(name string, mask uint32) Event {
|
||||
e := Event{Name: name}
|
||||
if mask&unix.NOTE_DELETE == unix.NOTE_DELETE {
|
||||
e.Op |= Remove
|
||||
}
|
||||
if mask&unix.NOTE_WRITE == unix.NOTE_WRITE {
|
||||
e.Op |= Write
|
||||
}
|
||||
if mask&unix.NOTE_RENAME == unix.NOTE_RENAME {
|
||||
e.Op |= Rename
|
||||
}
|
||||
if mask&unix.NOTE_ATTRIB == unix.NOTE_ATTRIB {
|
||||
e.Op |= Chmod
|
||||
}
|
||||
return e
|
||||
}
|
||||
|
||||
func newCreateEvent(name string) Event {
|
||||
return Event{Name: name, Op: Create}
|
||||
}
|
||||
|
||||
// watchDirectoryFiles to mimic inotify when adding a watch on a directory
|
||||
func (w *Watcher) watchDirectoryFiles(dirPath string) error {
|
||||
// Get all files
|
||||
files, err := ioutil.ReadDir(dirPath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for _, fileInfo := range files {
|
||||
filePath := filepath.Join(dirPath, fileInfo.Name())
|
||||
filePath, err = w.internalWatch(filePath, fileInfo)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
w.mu.Lock()
|
||||
w.fileExists[filePath] = true
|
||||
w.mu.Unlock()
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// sendDirectoryEvents searches the directory for newly created files
|
||||
// and sends them over the event channel. This functionality is to have
|
||||
// the BSD version of fsnotify match Linux inotify which provides a
|
||||
// create event for files created in a watched directory.
|
||||
func (w *Watcher) sendDirectoryChangeEvents(dirPath string) {
|
||||
// Get all files
|
||||
files, err := ioutil.ReadDir(dirPath)
|
||||
if err != nil {
|
||||
select {
|
||||
case w.Errors <- err:
|
||||
case <-w.done:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// Search for new files
|
||||
for _, fileInfo := range files {
|
||||
filePath := filepath.Join(dirPath, fileInfo.Name())
|
||||
err := w.sendFileCreatedEventIfNew(filePath, fileInfo)
|
||||
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// sendFileCreatedEvent sends a create event if the file isn't already being tracked.
|
||||
func (w *Watcher) sendFileCreatedEventIfNew(filePath string, fileInfo os.FileInfo) (err error) {
|
||||
w.mu.Lock()
|
||||
_, doesExist := w.fileExists[filePath]
|
||||
w.mu.Unlock()
|
||||
if !doesExist {
|
||||
// Send create event
|
||||
select {
|
||||
case w.Events <- newCreateEvent(filePath):
|
||||
case <-w.done:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// like watchDirectoryFiles (but without doing another ReadDir)
|
||||
filePath, err = w.internalWatch(filePath, fileInfo)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
w.mu.Lock()
|
||||
w.fileExists[filePath] = true
|
||||
w.mu.Unlock()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (w *Watcher) internalWatch(name string, fileInfo os.FileInfo) (string, error) {
|
||||
if fileInfo.IsDir() {
|
||||
// mimic Linux providing delete events for subdirectories
|
||||
// but preserve the flags used if currently watching subdirectory
|
||||
w.mu.Lock()
|
||||
flags := w.dirFlags[name]
|
||||
w.mu.Unlock()
|
||||
|
||||
flags |= unix.NOTE_DELETE | unix.NOTE_RENAME
|
||||
return w.addWatch(name, flags)
|
||||
}
|
||||
|
||||
// watch file to mimic Linux inotify
|
||||
return w.addWatch(name, noteAllEvents)
|
||||
}
|
||||
|
||||
// kqueue creates a new kernel event queue and returns a descriptor.
|
||||
func kqueue() (kq int, err error) {
|
||||
kq, err = unix.Kqueue()
|
||||
if kq == -1 {
|
||||
return kq, err
|
||||
}
|
||||
return kq, nil
|
||||
}
|
||||
|
||||
// register events with the queue
|
||||
func register(kq int, fds []int, flags int, fflags uint32) error {
|
||||
changes := make([]unix.Kevent_t, len(fds))
|
||||
|
||||
for i, fd := range fds {
|
||||
// SetKevent converts int to the platform-specific types:
|
||||
unix.SetKevent(&changes[i], fd, unix.EVFILT_VNODE, flags)
|
||||
changes[i].Fflags = fflags
|
||||
}
|
||||
|
||||
// register the events
|
||||
success, err := unix.Kevent(kq, changes, nil, nil)
|
||||
if success == -1 {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// read retrieves pending events, or waits until an event occurs.
|
||||
// A timeout of nil blocks indefinitely, while 0 polls the queue.
|
||||
func read(kq int, events []unix.Kevent_t, timeout *unix.Timespec) ([]unix.Kevent_t, error) {
|
||||
n, err := unix.Kevent(kq, nil, events, timeout)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return events[0:n], nil
|
||||
}
|
||||
|
||||
// durationToTimespec prepares a timeout value
|
||||
func durationToTimespec(d time.Duration) unix.Timespec {
|
||||
return unix.NsecToTimespec(d.Nanoseconds())
|
||||
}
|
||||
|
|
@ -0,0 +1,208 @@
|
|||
#!/usr/bin/env zsh
|
||||
[ "${ZSH_VERSION:-}" = "" ] && echo >&2 "Only works with zsh" && exit 1
|
||||
setopt err_exit no_unset pipefail extended_glob
|
||||
|
||||
# Simple script to update the godoc comments on all watchers. Probably took me
|
||||
# more time to write this than doing it manually, but ah well 🙃
|
||||
|
||||
watcher=$(<<EOF
|
||||
// Watcher watches a set of paths, delivering events on a channel.
|
||||
//
|
||||
// A watcher should not be copied (e.g. pass it by pointer, rather than by
|
||||
// value).
|
||||
//
|
||||
// # Linux notes
|
||||
//
|
||||
// When a file is removed a Remove event won't be emitted until all file
|
||||
// descriptors are closed, and deletes will always emit a Chmod. For example:
|
||||
//
|
||||
// fp := os.Open("file")
|
||||
// os.Remove("file") // Triggers Chmod
|
||||
// fp.Close() // Triggers Remove
|
||||
//
|
||||
// This is the event that inotify sends, so not much can be changed about this.
|
||||
//
|
||||
// The fs.inotify.max_user_watches sysctl variable specifies the upper limit
|
||||
// for the number of watches per user, and fs.inotify.max_user_instances
|
||||
// specifies the maximum number of inotify instances per user. Every Watcher you
|
||||
// create is an "instance", and every path you add is a "watch".
|
||||
//
|
||||
// These are also exposed in /proc as /proc/sys/fs/inotify/max_user_watches and
|
||||
// /proc/sys/fs/inotify/max_user_instances
|
||||
//
|
||||
// To increase them you can use sysctl or write the value to the /proc file:
|
||||
//
|
||||
// # Default values on Linux 5.18
|
||||
// sysctl fs.inotify.max_user_watches=124983
|
||||
// sysctl fs.inotify.max_user_instances=128
|
||||
//
|
||||
// To make the changes persist on reboot edit /etc/sysctl.conf or
|
||||
// /usr/lib/sysctl.d/50-default.conf (details differ per Linux distro; check
|
||||
// your distro's documentation):
|
||||
//
|
||||
// fs.inotify.max_user_watches=124983
|
||||
// fs.inotify.max_user_instances=128
|
||||
//
|
||||
// Reaching the limit will result in a "no space left on device" or "too many open
|
||||
// files" error.
|
||||
//
|
||||
// # kqueue notes (macOS, BSD)
|
||||
//
|
||||
// kqueue requires opening a file descriptor for every file that's being watched;
|
||||
// so if you're watching a directory with five files then that's six file
|
||||
// descriptors. You will run in to your system's "max open files" limit faster on
|
||||
// these platforms.
|
||||
//
|
||||
// The sysctl variables kern.maxfiles and kern.maxfilesperproc can be used to
|
||||
// control the maximum number of open files, as well as /etc/login.conf on BSD
|
||||
// systems.
|
||||
//
|
||||
// # macOS notes
|
||||
//
|
||||
// Spotlight indexing on macOS can result in multiple events (see [#15]). A
|
||||
// temporary workaround is to add your folder(s) to the "Spotlight Privacy
|
||||
// Settings" until we have a native FSEvents implementation (see [#11]).
|
||||
//
|
||||
// [#11]: https://github.com/fsnotify/fsnotify/issues/11
|
||||
// [#15]: https://github.com/fsnotify/fsnotify/issues/15
|
||||
EOF
|
||||
)
|
||||
|
||||
new=$(<<EOF
|
||||
// NewWatcher creates a new Watcher.
|
||||
EOF
|
||||
)
|
||||
|
||||
add=$(<<EOF
|
||||
// Add starts monitoring the path for changes.
|
||||
//
|
||||
// A path can only be watched once; attempting to watch it more than once will
|
||||
// return an error. Paths that do not yet exist on the filesystem cannot be
|
||||
// added. A watch will be automatically removed if the path is deleted.
|
||||
//
|
||||
// A path will remain watched if it gets renamed to somewhere else on the same
|
||||
// filesystem, but the monitor will get removed if the path gets deleted and
|
||||
// re-created, or if it's moved to a different filesystem.
|
||||
//
|
||||
// Notifications on network filesystems (NFS, SMB, FUSE, etc.) or special
|
||||
// filesystems (/proc, /sys, etc.) generally don't work.
|
||||
//
|
||||
// # Watching directories
|
||||
//
|
||||
// All files in a directory are monitored, including new files that are created
|
||||
// after the watcher is started. Subdirectories are not watched (i.e. it's
|
||||
// non-recursive).
|
||||
//
|
||||
// # Watching files
|
||||
//
|
||||
// Watching individual files (rather than directories) is generally not
|
||||
// recommended as many tools update files atomically. Instead of "just" writing
|
||||
// to the file a temporary file will be written to first, and if successful the
|
||||
// temporary file is moved to to destination removing the original, or some
|
||||
// variant thereof. The watcher on the original file is now lost, as it no
|
||||
// longer exists.
|
||||
//
|
||||
// Instead, watch the parent directory and use Event.Name to filter out files
|
||||
// you're not interested in. There is an example of this in [cmd/fsnotify/file.go].
|
||||
EOF
|
||||
)
|
||||
|
||||
remove=$(<<EOF
|
||||
// Remove stops monitoring the path for changes.
|
||||
//
|
||||
// Directories are always removed non-recursively. For example, if you added
|
||||
// /tmp/dir and /tmp/dir/subdir then you will need to remove both.
|
||||
//
|
||||
// Removing a path that has not yet been added returns [ErrNonExistentWatch].
|
||||
EOF
|
||||
)
|
||||
|
||||
close=$(<<EOF
|
||||
// Close removes all watches and closes the events channel.
|
||||
EOF
|
||||
)
|
||||
|
||||
watchlist=$(<<EOF
|
||||
// WatchList returns all paths added with [Add] (and are not yet removed).
|
||||
EOF
|
||||
)
|
||||
|
||||
events=$(<<EOF
|
||||
// Events sends the filesystem change events.
|
||||
//
|
||||
// fsnotify can send the following events; a "path" here can refer to a
|
||||
// file, directory, symbolic link, or special file like a FIFO.
|
||||
//
|
||||
// fsnotify.Create A new path was created; this may be followed by one
|
||||
// or more Write events if data also gets written to a
|
||||
// file.
|
||||
//
|
||||
// fsnotify.Remove A path was removed.
|
||||
//
|
||||
// fsnotify.Rename A path was renamed. A rename is always sent with the
|
||||
// old path as Event.Name, and a Create event will be
|
||||
// sent with the new name. Renames are only sent for
|
||||
// paths that are currently watched; e.g. moving an
|
||||
// unmonitored file into a monitored directory will
|
||||
// show up as just a Create. Similarly, renaming a file
|
||||
// to outside a monitored directory will show up as
|
||||
// only a Rename.
|
||||
//
|
||||
// fsnotify.Write A file or named pipe was written to. A Truncate will
|
||||
// also trigger a Write. A single "write action"
|
||||
// initiated by the user may show up as one or multiple
|
||||
// writes, depending on when the system syncs things to
|
||||
// disk. For example when compiling a large Go program
|
||||
// you may get hundreds of Write events, so you
|
||||
// probably want to wait until you've stopped receiving
|
||||
// them (see the dedup example in cmd/fsnotify).
|
||||
//
|
||||
// fsnotify.Chmod Attributes were changed. On Linux this is also sent
|
||||
// when a file is removed (or more accurately, when a
|
||||
// link to an inode is removed). On kqueue it's sent
|
||||
// and on kqueue when a file is truncated. On Windows
|
||||
// it's never sent.
|
||||
EOF
|
||||
)
|
||||
|
||||
errors=$(<<EOF
|
||||
// Errors sends any errors.
|
||||
EOF
|
||||
)
|
||||
|
||||
set-cmt() {
|
||||
local pat=$1
|
||||
local cmt=$2
|
||||
|
||||
IFS=$'\n' local files=($(grep -n $pat backend_*~*_test.go))
|
||||
for f in $files; do
|
||||
IFS=':' local fields=($=f)
|
||||
local file=$fields[1]
|
||||
local end=$(( $fields[2] - 1 ))
|
||||
|
||||
# Find start of comment.
|
||||
local start=0
|
||||
IFS=$'\n' local lines=($(head -n$end $file))
|
||||
for (( i = 1; i <= $#lines; i++ )); do
|
||||
local line=$lines[-$i]
|
||||
if ! grep -q '^[[:space:]]*//' <<<$line; then
|
||||
start=$(( end - (i - 2) ))
|
||||
break
|
||||
fi
|
||||
done
|
||||
|
||||
head -n $(( start - 1 )) $file >/tmp/x
|
||||
print -r -- $cmt >>/tmp/x
|
||||
tail -n+$(( end + 1 )) $file >>/tmp/x
|
||||
mv /tmp/x $file
|
||||
done
|
||||
}
|
||||
|
||||
set-cmt '^type Watcher struct ' $watcher
|
||||
set-cmt '^func NewWatcher(' $new
|
||||
set-cmt '^func (w \*Watcher) Add(' $add
|
||||
set-cmt '^func (w \*Watcher) Remove(' $remove
|
||||
set-cmt '^func (w \*Watcher) Close(' $close
|
||||
set-cmt '^func (w \*Watcher) WatchList(' $watchlist
|
||||
set-cmt '^[[:space:]]*Events *chan Event$' $events
|
||||
set-cmt '^[[:space:]]*Errors *chan error$' $errors
|
||||
|
|
@ -1,7 +1,3 @@
|
|||
// Copyright 2013 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build freebsd || openbsd || netbsd || dragonfly
|
||||
// +build freebsd openbsd netbsd dragonfly
|
||||
|
||||
|
|
@ -1,7 +1,3 @@
|
|||
// Copyright 2013 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build darwin
|
||||
// +build darwin
|
||||
|
||||
|
|
@ -1,586 +0,0 @@
|
|||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
//go:build windows
|
||||
// +build windows
|
||||
|
||||
package fsnotify
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"reflect"
|
||||
"runtime"
|
||||
"sync"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// Watcher watches a set of files, delivering events to a channel.
|
||||
type Watcher struct {
|
||||
Events chan Event
|
||||
Errors chan error
|
||||
isClosed bool // Set to true when Close() is first called
|
||||
mu sync.Mutex // Map access
|
||||
port syscall.Handle // Handle to completion port
|
||||
watches watchMap // Map of watches (key: i-number)
|
||||
input chan *input // Inputs to the reader are sent on this channel
|
||||
quit chan chan<- error
|
||||
}
|
||||
|
||||
// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events.
|
||||
func NewWatcher() (*Watcher, error) {
|
||||
port, e := syscall.CreateIoCompletionPort(syscall.InvalidHandle, 0, 0, 0)
|
||||
if e != nil {
|
||||
return nil, os.NewSyscallError("CreateIoCompletionPort", e)
|
||||
}
|
||||
w := &Watcher{
|
||||
port: port,
|
||||
watches: make(watchMap),
|
||||
input: make(chan *input, 1),
|
||||
Events: make(chan Event, 50),
|
||||
Errors: make(chan error),
|
||||
quit: make(chan chan<- error, 1),
|
||||
}
|
||||
go w.readEvents()
|
||||
return w, nil
|
||||
}
|
||||
|
||||
// Close removes all watches and closes the events channel.
|
||||
func (w *Watcher) Close() error {
|
||||
if w.isClosed {
|
||||
return nil
|
||||
}
|
||||
w.isClosed = true
|
||||
|
||||
// Send "quit" message to the reader goroutine
|
||||
ch := make(chan error)
|
||||
w.quit <- ch
|
||||
if err := w.wakeupReader(); err != nil {
|
||||
return err
|
||||
}
|
||||
return <-ch
|
||||
}
|
||||
|
||||
// Add starts watching the named file or directory (non-recursively).
|
||||
func (w *Watcher) Add(name string) error {
|
||||
if w.isClosed {
|
||||
return errors.New("watcher already closed")
|
||||
}
|
||||
in := &input{
|
||||
op: opAddWatch,
|
||||
path: filepath.Clean(name),
|
||||
flags: sysFSALLEVENTS,
|
||||
reply: make(chan error),
|
||||
}
|
||||
w.input <- in
|
||||
if err := w.wakeupReader(); err != nil {
|
||||
return err
|
||||
}
|
||||
return <-in.reply
|
||||
}
|
||||
|
||||
// Remove stops watching the the named file or directory (non-recursively).
|
||||
func (w *Watcher) Remove(name string) error {
|
||||
in := &input{
|
||||
op: opRemoveWatch,
|
||||
path: filepath.Clean(name),
|
||||
reply: make(chan error),
|
||||
}
|
||||
w.input <- in
|
||||
if err := w.wakeupReader(); err != nil {
|
||||
return err
|
||||
}
|
||||
return <-in.reply
|
||||
}
|
||||
|
||||
// WatchList returns the directories and files that are being monitered.
|
||||
func (w *Watcher) WatchList() []string {
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
|
||||
entries := make([]string, 0, len(w.watches))
|
||||
for _, entry := range w.watches {
|
||||
for _, watchEntry := range entry {
|
||||
entries = append(entries, watchEntry.path)
|
||||
}
|
||||
}
|
||||
|
||||
return entries
|
||||
}
|
||||
|
||||
const (
|
||||
// Options for AddWatch
|
||||
sysFSONESHOT = 0x80000000
|
||||
sysFSONLYDIR = 0x1000000
|
||||
|
||||
// Events
|
||||
sysFSACCESS = 0x1
|
||||
sysFSALLEVENTS = 0xfff
|
||||
sysFSATTRIB = 0x4
|
||||
sysFSCLOSE = 0x18
|
||||
sysFSCREATE = 0x100
|
||||
sysFSDELETE = 0x200
|
||||
sysFSDELETESELF = 0x400
|
||||
sysFSMODIFY = 0x2
|
||||
sysFSMOVE = 0xc0
|
||||
sysFSMOVEDFROM = 0x40
|
||||
sysFSMOVEDTO = 0x80
|
||||
sysFSMOVESELF = 0x800
|
||||
|
||||
// Special events
|
||||
sysFSIGNORED = 0x8000
|
||||
sysFSQOVERFLOW = 0x4000
|
||||
)
|
||||
|
||||
func newEvent(name string, mask uint32) Event {
|
||||
e := Event{Name: name}
|
||||
if mask&sysFSCREATE == sysFSCREATE || mask&sysFSMOVEDTO == sysFSMOVEDTO {
|
||||
e.Op |= Create
|
||||
}
|
||||
if mask&sysFSDELETE == sysFSDELETE || mask&sysFSDELETESELF == sysFSDELETESELF {
|
||||
e.Op |= Remove
|
||||
}
|
||||
if mask&sysFSMODIFY == sysFSMODIFY {
|
||||
e.Op |= Write
|
||||
}
|
||||
if mask&sysFSMOVE == sysFSMOVE || mask&sysFSMOVESELF == sysFSMOVESELF || mask&sysFSMOVEDFROM == sysFSMOVEDFROM {
|
||||
e.Op |= Rename
|
||||
}
|
||||
if mask&sysFSATTRIB == sysFSATTRIB {
|
||||
e.Op |= Chmod
|
||||
}
|
||||
return e
|
||||
}
|
||||
|
||||
const (
|
||||
opAddWatch = iota
|
||||
opRemoveWatch
|
||||
)
|
||||
|
||||
const (
|
||||
provisional uint64 = 1 << (32 + iota)
|
||||
)
|
||||
|
||||
type input struct {
|
||||
op int
|
||||
path string
|
||||
flags uint32
|
||||
reply chan error
|
||||
}
|
||||
|
||||
type inode struct {
|
||||
handle syscall.Handle
|
||||
volume uint32
|
||||
index uint64
|
||||
}
|
||||
|
||||
type watch struct {
|
||||
ov syscall.Overlapped
|
||||
ino *inode // i-number
|
||||
path string // Directory path
|
||||
mask uint64 // Directory itself is being watched with these notify flags
|
||||
names map[string]uint64 // Map of names being watched and their notify flags
|
||||
rename string // Remembers the old name while renaming a file
|
||||
buf [4096]byte
|
||||
}
|
||||
|
||||
type indexMap map[uint64]*watch
|
||||
type watchMap map[uint32]indexMap
|
||||
|
||||
func (w *Watcher) wakeupReader() error {
|
||||
e := syscall.PostQueuedCompletionStatus(w.port, 0, 0, nil)
|
||||
if e != nil {
|
||||
return os.NewSyscallError("PostQueuedCompletionStatus", e)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func getDir(pathname string) (dir string, err error) {
|
||||
attr, e := syscall.GetFileAttributes(syscall.StringToUTF16Ptr(pathname))
|
||||
if e != nil {
|
||||
return "", os.NewSyscallError("GetFileAttributes", e)
|
||||
}
|
||||
if attr&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
|
||||
dir = pathname
|
||||
} else {
|
||||
dir, _ = filepath.Split(pathname)
|
||||
dir = filepath.Clean(dir)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func getIno(path string) (ino *inode, err error) {
|
||||
h, e := syscall.CreateFile(syscall.StringToUTF16Ptr(path),
|
||||
syscall.FILE_LIST_DIRECTORY,
|
||||
syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE,
|
||||
nil, syscall.OPEN_EXISTING,
|
||||
syscall.FILE_FLAG_BACKUP_SEMANTICS|syscall.FILE_FLAG_OVERLAPPED, 0)
|
||||
if e != nil {
|
||||
return nil, os.NewSyscallError("CreateFile", e)
|
||||
}
|
||||
var fi syscall.ByHandleFileInformation
|
||||
if e = syscall.GetFileInformationByHandle(h, &fi); e != nil {
|
||||
syscall.CloseHandle(h)
|
||||
return nil, os.NewSyscallError("GetFileInformationByHandle", e)
|
||||
}
|
||||
ino = &inode{
|
||||
handle: h,
|
||||
volume: fi.VolumeSerialNumber,
|
||||
index: uint64(fi.FileIndexHigh)<<32 | uint64(fi.FileIndexLow),
|
||||
}
|
||||
return ino, nil
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (m watchMap) get(ino *inode) *watch {
|
||||
if i := m[ino.volume]; i != nil {
|
||||
return i[ino.index]
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (m watchMap) set(ino *inode, watch *watch) {
|
||||
i := m[ino.volume]
|
||||
if i == nil {
|
||||
i = make(indexMap)
|
||||
m[ino.volume] = i
|
||||
}
|
||||
i[ino.index] = watch
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (w *Watcher) addWatch(pathname string, flags uint64) error {
|
||||
dir, err := getDir(pathname)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if flags&sysFSONLYDIR != 0 && pathname != dir {
|
||||
return nil
|
||||
}
|
||||
ino, err := getIno(dir)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
w.mu.Lock()
|
||||
watchEntry := w.watches.get(ino)
|
||||
w.mu.Unlock()
|
||||
if watchEntry == nil {
|
||||
if _, e := syscall.CreateIoCompletionPort(ino.handle, w.port, 0, 0); e != nil {
|
||||
syscall.CloseHandle(ino.handle)
|
||||
return os.NewSyscallError("CreateIoCompletionPort", e)
|
||||
}
|
||||
watchEntry = &watch{
|
||||
ino: ino,
|
||||
path: dir,
|
||||
names: make(map[string]uint64),
|
||||
}
|
||||
w.mu.Lock()
|
||||
w.watches.set(ino, watchEntry)
|
||||
w.mu.Unlock()
|
||||
flags |= provisional
|
||||
} else {
|
||||
syscall.CloseHandle(ino.handle)
|
||||
}
|
||||
if pathname == dir {
|
||||
watchEntry.mask |= flags
|
||||
} else {
|
||||
watchEntry.names[filepath.Base(pathname)] |= flags
|
||||
}
|
||||
if err = w.startRead(watchEntry); err != nil {
|
||||
return err
|
||||
}
|
||||
if pathname == dir {
|
||||
watchEntry.mask &= ^provisional
|
||||
} else {
|
||||
watchEntry.names[filepath.Base(pathname)] &= ^provisional
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (w *Watcher) remWatch(pathname string) error {
|
||||
dir, err := getDir(pathname)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
ino, err := getIno(dir)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
w.mu.Lock()
|
||||
watch := w.watches.get(ino)
|
||||
w.mu.Unlock()
|
||||
if watch == nil {
|
||||
return fmt.Errorf("can't remove non-existent watch for: %s", pathname)
|
||||
}
|
||||
if pathname == dir {
|
||||
w.sendEvent(watch.path, watch.mask&sysFSIGNORED)
|
||||
watch.mask = 0
|
||||
} else {
|
||||
name := filepath.Base(pathname)
|
||||
w.sendEvent(filepath.Join(watch.path, name), watch.names[name]&sysFSIGNORED)
|
||||
delete(watch.names, name)
|
||||
}
|
||||
return w.startRead(watch)
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (w *Watcher) deleteWatch(watch *watch) {
|
||||
for name, mask := range watch.names {
|
||||
if mask&provisional == 0 {
|
||||
w.sendEvent(filepath.Join(watch.path, name), mask&sysFSIGNORED)
|
||||
}
|
||||
delete(watch.names, name)
|
||||
}
|
||||
if watch.mask != 0 {
|
||||
if watch.mask&provisional == 0 {
|
||||
w.sendEvent(watch.path, watch.mask&sysFSIGNORED)
|
||||
}
|
||||
watch.mask = 0
|
||||
}
|
||||
}
|
||||
|
||||
// Must run within the I/O thread.
|
||||
func (w *Watcher) startRead(watch *watch) error {
|
||||
if e := syscall.CancelIo(watch.ino.handle); e != nil {
|
||||
w.Errors <- os.NewSyscallError("CancelIo", e)
|
||||
w.deleteWatch(watch)
|
||||
}
|
||||
mask := toWindowsFlags(watch.mask)
|
||||
for _, m := range watch.names {
|
||||
mask |= toWindowsFlags(m)
|
||||
}
|
||||
if mask == 0 {
|
||||
if e := syscall.CloseHandle(watch.ino.handle); e != nil {
|
||||
w.Errors <- os.NewSyscallError("CloseHandle", e)
|
||||
}
|
||||
w.mu.Lock()
|
||||
delete(w.watches[watch.ino.volume], watch.ino.index)
|
||||
w.mu.Unlock()
|
||||
return nil
|
||||
}
|
||||
e := syscall.ReadDirectoryChanges(watch.ino.handle, &watch.buf[0],
|
||||
uint32(unsafe.Sizeof(watch.buf)), false, mask, nil, &watch.ov, 0)
|
||||
if e != nil {
|
||||
err := os.NewSyscallError("ReadDirectoryChanges", e)
|
||||
if e == syscall.ERROR_ACCESS_DENIED && watch.mask&provisional == 0 {
|
||||
// Watched directory was probably removed
|
||||
if w.sendEvent(watch.path, watch.mask&sysFSDELETESELF) {
|
||||
if watch.mask&sysFSONESHOT != 0 {
|
||||
watch.mask = 0
|
||||
}
|
||||
}
|
||||
err = nil
|
||||
}
|
||||
w.deleteWatch(watch)
|
||||
w.startRead(watch)
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// readEvents reads from the I/O completion port, converts the
|
||||
// received events into Event objects and sends them via the Events channel.
|
||||
// Entry point to the I/O thread.
|
||||
func (w *Watcher) readEvents() {
|
||||
var (
|
||||
n, key uint32
|
||||
ov *syscall.Overlapped
|
||||
)
|
||||
runtime.LockOSThread()
|
||||
|
||||
for {
|
||||
e := syscall.GetQueuedCompletionStatus(w.port, &n, &key, &ov, syscall.INFINITE)
|
||||
watch := (*watch)(unsafe.Pointer(ov))
|
||||
|
||||
if watch == nil {
|
||||
select {
|
||||
case ch := <-w.quit:
|
||||
w.mu.Lock()
|
||||
var indexes []indexMap
|
||||
for _, index := range w.watches {
|
||||
indexes = append(indexes, index)
|
||||
}
|
||||
w.mu.Unlock()
|
||||
for _, index := range indexes {
|
||||
for _, watch := range index {
|
||||
w.deleteWatch(watch)
|
||||
w.startRead(watch)
|
||||
}
|
||||
}
|
||||
var err error
|
||||
if e := syscall.CloseHandle(w.port); e != nil {
|
||||
err = os.NewSyscallError("CloseHandle", e)
|
||||
}
|
||||
close(w.Events)
|
||||
close(w.Errors)
|
||||
ch <- err
|
||||
return
|
||||
case in := <-w.input:
|
||||
switch in.op {
|
||||
case opAddWatch:
|
||||
in.reply <- w.addWatch(in.path, uint64(in.flags))
|
||||
case opRemoveWatch:
|
||||
in.reply <- w.remWatch(in.path)
|
||||
}
|
||||
default:
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
switch e {
|
||||
case syscall.ERROR_MORE_DATA:
|
||||
if watch == nil {
|
||||
w.Errors <- errors.New("ERROR_MORE_DATA has unexpectedly null lpOverlapped buffer")
|
||||
} else {
|
||||
// The i/o succeeded but the buffer is full.
|
||||
// In theory we should be building up a full packet.
|
||||
// In practice we can get away with just carrying on.
|
||||
n = uint32(unsafe.Sizeof(watch.buf))
|
||||
}
|
||||
case syscall.ERROR_ACCESS_DENIED:
|
||||
// Watched directory was probably removed
|
||||
w.sendEvent(watch.path, watch.mask&sysFSDELETESELF)
|
||||
w.deleteWatch(watch)
|
||||
w.startRead(watch)
|
||||
continue
|
||||
case syscall.ERROR_OPERATION_ABORTED:
|
||||
// CancelIo was called on this handle
|
||||
continue
|
||||
default:
|
||||
w.Errors <- os.NewSyscallError("GetQueuedCompletionPort", e)
|
||||
continue
|
||||
case nil:
|
||||
}
|
||||
|
||||
var offset uint32
|
||||
for {
|
||||
if n == 0 {
|
||||
w.Events <- newEvent("", sysFSQOVERFLOW)
|
||||
w.Errors <- errors.New("short read in readEvents()")
|
||||
break
|
||||
}
|
||||
|
||||
// Point "raw" to the event in the buffer
|
||||
raw := (*syscall.FileNotifyInformation)(unsafe.Pointer(&watch.buf[offset]))
|
||||
// TODO: Consider using unsafe.Slice that is available from go1.17
|
||||
// https://stackoverflow.com/questions/51187973/how-to-create-an-array-or-a-slice-from-an-array-unsafe-pointer-in-golang
|
||||
// instead of using a fixed syscall.MAX_PATH buf, we create a buf that is the size of the path name
|
||||
size := int(raw.FileNameLength / 2)
|
||||
var buf []uint16
|
||||
sh := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
|
||||
sh.Data = uintptr(unsafe.Pointer(&raw.FileName))
|
||||
sh.Len = size
|
||||
sh.Cap = size
|
||||
name := syscall.UTF16ToString(buf)
|
||||
fullname := filepath.Join(watch.path, name)
|
||||
|
||||
var mask uint64
|
||||
switch raw.Action {
|
||||
case syscall.FILE_ACTION_REMOVED:
|
||||
mask = sysFSDELETESELF
|
||||
case syscall.FILE_ACTION_MODIFIED:
|
||||
mask = sysFSMODIFY
|
||||
case syscall.FILE_ACTION_RENAMED_OLD_NAME:
|
||||
watch.rename = name
|
||||
case syscall.FILE_ACTION_RENAMED_NEW_NAME:
|
||||
if watch.names[watch.rename] != 0 {
|
||||
watch.names[name] |= watch.names[watch.rename]
|
||||
delete(watch.names, watch.rename)
|
||||
mask = sysFSMOVESELF
|
||||
}
|
||||
}
|
||||
|
||||
sendNameEvent := func() {
|
||||
if w.sendEvent(fullname, watch.names[name]&mask) {
|
||||
if watch.names[name]&sysFSONESHOT != 0 {
|
||||
delete(watch.names, name)
|
||||
}
|
||||
}
|
||||
}
|
||||
if raw.Action != syscall.FILE_ACTION_RENAMED_NEW_NAME {
|
||||
sendNameEvent()
|
||||
}
|
||||
if raw.Action == syscall.FILE_ACTION_REMOVED {
|
||||
w.sendEvent(fullname, watch.names[name]&sysFSIGNORED)
|
||||
delete(watch.names, name)
|
||||
}
|
||||
if w.sendEvent(fullname, watch.mask&toFSnotifyFlags(raw.Action)) {
|
||||
if watch.mask&sysFSONESHOT != 0 {
|
||||
watch.mask = 0
|
||||
}
|
||||
}
|
||||
if raw.Action == syscall.FILE_ACTION_RENAMED_NEW_NAME {
|
||||
fullname = filepath.Join(watch.path, watch.rename)
|
||||
sendNameEvent()
|
||||
}
|
||||
|
||||
// Move to the next event in the buffer
|
||||
if raw.NextEntryOffset == 0 {
|
||||
break
|
||||
}
|
||||
offset += raw.NextEntryOffset
|
||||
|
||||
// Error!
|
||||
if offset >= n {
|
||||
w.Errors <- errors.New("Windows system assumed buffer larger than it is, events have likely been missed.")
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if err := w.startRead(watch); err != nil {
|
||||
w.Errors <- err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (w *Watcher) sendEvent(name string, mask uint64) bool {
|
||||
if mask == 0 {
|
||||
return false
|
||||
}
|
||||
event := newEvent(name, uint32(mask))
|
||||
select {
|
||||
case ch := <-w.quit:
|
||||
w.quit <- ch
|
||||
case w.Events <- event:
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func toWindowsFlags(mask uint64) uint32 {
|
||||
var m uint32
|
||||
if mask&sysFSACCESS != 0 {
|
||||
m |= syscall.FILE_NOTIFY_CHANGE_LAST_ACCESS
|
||||
}
|
||||
if mask&sysFSMODIFY != 0 {
|
||||
m |= syscall.FILE_NOTIFY_CHANGE_LAST_WRITE
|
||||
}
|
||||
if mask&sysFSATTRIB != 0 {
|
||||
m |= syscall.FILE_NOTIFY_CHANGE_ATTRIBUTES
|
||||
}
|
||||
if mask&(sysFSMOVE|sysFSCREATE|sysFSDELETE) != 0 {
|
||||
m |= syscall.FILE_NOTIFY_CHANGE_FILE_NAME | syscall.FILE_NOTIFY_CHANGE_DIR_NAME
|
||||
}
|
||||
return m
|
||||
}
|
||||
|
||||
func toFSnotifyFlags(action uint32) uint64 {
|
||||
switch action {
|
||||
case syscall.FILE_ACTION_ADDED:
|
||||
return sysFSCREATE
|
||||
case syscall.FILE_ACTION_REMOVED:
|
||||
return sysFSDELETE
|
||||
case syscall.FILE_ACTION_MODIFIED:
|
||||
return sysFSMODIFY
|
||||
case syscall.FILE_ACTION_RENAMED_OLD_NAME:
|
||||
return sysFSMOVEDFROM
|
||||
case syscall.FILE_ACTION_RENAMED_NEW_NAME:
|
||||
return sysFSMOVEDTO
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
|
@ -11,7 +11,7 @@
|
|||
[](https://github.com/spf13/viper/actions?query=workflow%3ACI)
|
||||
[](https://gitter.im/spf13/viper?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
|
||||
[](https://goreportcard.com/report/github.com/spf13/viper)
|
||||
|
||||
|
||||
[](https://pkg.go.dev/mod/github.com/spf13/viper)
|
||||
|
||||
**Go configuration with fangs!**
|
||||
|
|
|
|||
|
|
@ -463,9 +463,8 @@ func (v *Viper) WatchConfig() {
|
|||
// we only care about the config file with the following cases:
|
||||
// 1 - if the config file was modified or created
|
||||
// 2 - if the real path to the config file changed (eg: k8s ConfigMap replacement)
|
||||
const writeOrCreateMask = fsnotify.Write | fsnotify.Create
|
||||
if (filepath.Clean(event.Name) == configFile &&
|
||||
event.Op&writeOrCreateMask != 0) ||
|
||||
(event.Has(fsnotify.Write) || event.Has(fsnotify.Create))) ||
|
||||
(currentConfigFile != "" && currentConfigFile != realConfigFile) {
|
||||
realConfigFile = currentConfigFile
|
||||
err := v.ReadInConfig()
|
||||
|
|
@ -475,8 +474,7 @@ func (v *Viper) WatchConfig() {
|
|||
if v.onConfigChange != nil {
|
||||
v.onConfigChange(event)
|
||||
}
|
||||
} else if filepath.Clean(event.Name) == configFile &&
|
||||
event.Op&fsnotify.Remove != 0 {
|
||||
} else if filepath.Clean(event.Name) == configFile && event.Has(fsnotify.Remove) {
|
||||
eventsWG.Done()
|
||||
return
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
//go:build !js
|
||||
// +build !js
|
||||
//go:build darwin || dragonfly || freebsd || openbsd || linux || netbsd || solaris || windows
|
||||
// +build darwin dragonfly freebsd openbsd linux netbsd solaris windows
|
||||
|
||||
package viper
|
||||
|
||||
|
|
|
|||
|
|
@ -1,13 +1,19 @@
|
|||
// +build js,wasm
|
||||
//go:build appengine || (!darwin && !dragonfly && !freebsd && !openbsd && !linux && !netbsd && !solaris && !windows)
|
||||
// +build appengine !darwin,!dragonfly,!freebsd,!openbsd,!linux,!netbsd,!solaris,!windows
|
||||
|
||||
package viper
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"runtime"
|
||||
|
||||
"github.com/fsnotify/fsnotify"
|
||||
)
|
||||
|
||||
func newWatcher() (*watcher, error) {
|
||||
return &watcher{}, fmt.Errorf("fsnotify not supported on %s", runtime.GOOS)
|
||||
}
|
||||
|
||||
type watcher struct {
|
||||
Events chan fsnotify.Event
|
||||
Errors chan error
|
||||
|
|
@ -24,7 +30,3 @@ func (*watcher) Add(name string) error {
|
|||
func (*watcher) Remove(name string) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func newWatcher() (*watcher, error) {
|
||||
return &watcher{}, errors.New("fsnotify is not supported on WASM")
|
||||
}
|
||||
|
|
@ -734,7 +734,7 @@ func inHeadIM(p *parser) bool {
|
|||
return false
|
||||
}
|
||||
|
||||
// 12.2.6.4.5.
|
||||
// Section 12.2.6.4.5.
|
||||
func inHeadNoscriptIM(p *parser) bool {
|
||||
switch p.tok.Type {
|
||||
case DoctypeToken:
|
||||
|
|
|
|||
|
|
@ -101,7 +101,7 @@ loop:
|
|||
break
|
||||
}
|
||||
|
||||
u := nodes[f] >> (nodesBitsTextOffset + nodesBitsTextLength)
|
||||
u := uint32(nodeValue(f) >> (nodesBitsTextOffset + nodesBitsTextLength))
|
||||
icannNode = u&(1<<nodesBitsICANN-1) != 0
|
||||
u >>= nodesBitsICANN
|
||||
u = children[u&(1<<nodesBitsChildren-1)]
|
||||
|
|
@ -154,9 +154,18 @@ func find(label string, lo, hi uint32) uint32 {
|
|||
return notFound
|
||||
}
|
||||
|
||||
func nodeValue(i uint32) uint64 {
|
||||
off := uint64(i * (nodesBits / 8))
|
||||
return uint64(nodes[off])<<32 |
|
||||
uint64(nodes[off+1])<<24 |
|
||||
uint64(nodes[off+2])<<16 |
|
||||
uint64(nodes[off+3])<<8 |
|
||||
uint64(nodes[off+4])
|
||||
}
|
||||
|
||||
// nodeLabel returns the label for the i'th node.
|
||||
func nodeLabel(i uint32) string {
|
||||
x := nodes[i]
|
||||
x := nodeValue(i)
|
||||
length := x & (1<<nodesBitsTextLength - 1)
|
||||
x >>= nodesBitsTextLength
|
||||
offset := x & (1<<nodesBitsTextOffset - 1)
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -99,7 +99,7 @@ github.com/dsoprea/go-utility/v2/image
|
|||
# github.com/dustin/go-humanize v1.0.0
|
||||
## explicit
|
||||
github.com/dustin/go-humanize
|
||||
# github.com/fsnotify/fsnotify v1.5.4
|
||||
# github.com/fsnotify/fsnotify v1.6.0
|
||||
## explicit; go 1.16
|
||||
github.com/fsnotify/fsnotify
|
||||
# github.com/gin-contrib/cors v1.4.0
|
||||
|
|
@ -351,7 +351,7 @@ github.com/spf13/jwalterweatherman
|
|||
# github.com/spf13/pflag v1.0.5
|
||||
## explicit; go 1.12
|
||||
github.com/spf13/pflag
|
||||
# github.com/spf13/viper v1.13.0
|
||||
# github.com/spf13/viper v1.14.0
|
||||
## explicit; go 1.17
|
||||
github.com/spf13/viper
|
||||
github.com/spf13/viper/internal/encoding
|
||||
|
|
@ -655,7 +655,7 @@ golang.org/x/image/tiff/lzw
|
|||
# golang.org/x/mod v0.6.0-dev.0.20220907135952-02c991387e35
|
||||
## explicit; go 1.17
|
||||
golang.org/x/mod/semver
|
||||
# golang.org/x/net v0.0.0-20221002022538-bcab6841153b
|
||||
# golang.org/x/net v0.0.0-20221014081412-f15817d10f9b
|
||||
## explicit; go 1.17
|
||||
golang.org/x/net/bpf
|
||||
golang.org/x/net/context
|
||||
|
|
@ -672,7 +672,7 @@ golang.org/x/net/internal/socket
|
|||
golang.org/x/net/ipv4
|
||||
golang.org/x/net/ipv6
|
||||
golang.org/x/net/publicsuffix
|
||||
# golang.org/x/oauth2 v0.0.0-20220822191816-0ebed06d0094
|
||||
# golang.org/x/oauth2 v0.0.0-20221014153046-6fdb5e3db783
|
||||
## explicit; go 1.17
|
||||
golang.org/x/oauth2
|
||||
golang.org/x/oauth2/internal
|
||||
|
|
|
|||
Loading…
Reference in New Issue