GoToSocial/vendor/golang.org/x/sys/unix/fcntl.go
dependabot[bot] b576fbbdcb
[chore]: Bump golang.org/x/crypto from 0.15.0 to 0.16.0 (#2413)
Bumps [golang.org/x/crypto](https://github.com/golang/crypto) from 0.15.0 to 0.16.0.
- [Commits](https://github.com/golang/crypto/compare/v0.15.0...v0.16.0)

---
updated-dependencies:
- dependency-name: golang.org/x/crypto
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-12-05 11:46:03 +01:00

37 lines
1.0 KiB
Go

// Copyright 2014 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 dragonfly || freebsd || linux || netbsd
package unix
import "unsafe"
// fcntl64Syscall is usually SYS_FCNTL, but is overridden on 32-bit Linux
// systems by fcntl_linux_32bit.go to be SYS_FCNTL64.
var fcntl64Syscall uintptr = SYS_FCNTL
func fcntl(fd int, cmd, arg int) (int, error) {
valptr, _, errno := Syscall(fcntl64Syscall, uintptr(fd), uintptr(cmd), uintptr(arg))
var err error
if errno != 0 {
err = errno
}
return int(valptr), err
}
// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
return fcntl(int(fd), cmd, arg)
}
// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
_, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(unsafe.Pointer(lk)))
if errno == 0 {
return nil
}
return errno
}