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To simulate failures opening a cache file, fixtures are written without the read permission bits. Since Unix permission bits have no meaning on Windows, a slightly more complicated solution is required to achieve the same permissions. Thankfully, there's a library to abstract that already.
67 lines
1.9 KiB
Markdown
67 lines
1.9 KiB
Markdown
## go-acl
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[](https://ci.appveyor.com/project/nathan-osman/go-acl)
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[](https://godoc.org/github.com/hectane/go-acl)
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[](http://opensource.org/licenses/MIT)
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Manipulating ACLs (Access Control Lists) on Windows is difficult. go-acl wraps the Windows API functions that control access to objects, simplifying the process.
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### Using the Package
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To use the package add the following imports:
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import (
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"github.com/hectane/go-acl"
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"golang.org/x/sys/windows"
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)
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### Examples
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Probably the most commonly used function in this package is `Chmod`:
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if err := acl.Chmod("C:\\path\\to\\file.txt", 0755); err != nil {
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panic(err)
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}
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To grant read access to user "Alice" and deny write access to user "Bob":
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if err := acl.Apply(
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"C:\\path\\to\\file.txt",
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false,
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false,
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acl.GrantName(windows.GENERIC_READ, "Alice"),
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acl.DenyName(windows.GENERIC_WRITE, "Bob"),
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); err != nil {
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panic(err)
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}
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### Using the API Directly
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go-acl's `api` package exposes the individual Windows API functions that are used to manipulate ACLs. For example, to retrieve the current owner of a file:
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import (
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"github.com/hectane/go-acl/api"
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"golang.org/x/sys/windows"
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)
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var (
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owner *windows.SID
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secDesc windows.Handle
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)
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err := api.GetNamedSecurityInfo(
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"C:\\path\\to\\file.txt",
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api.SE_FILE_OBJECT,
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api.OWNER_SECURITY_INFORMATION,
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&owner,
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nil,
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nil,
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nil,
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&secDesc,
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)
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if err != nil {
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panic(err)
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}
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defer windows.LocalFree(secDesc)
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`owner` will then point to the SID for the owner of the file.
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