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author | 2018-07-06 21:18:14 -0700 | |
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committer | 2018-07-06 21:18:14 -0700 | |
commit | 459bb4531f92f8663afb6f36aa9be5b789bd591f (patch) | |
tree | f14e6c06b8e5c63612d1ff36f8cab40ae8a99d20 /vendor/golang.org/x/sys/unix/fcntl.go | |
parent | 34a3fe426b33a63f2d8e02d4a70c88f137fa5410 (diff) |
Update vendor dependencies
Diffstat (limited to 'vendor/golang.org/x/sys/unix/fcntl.go')
-rw-r--r-- | vendor/golang.org/x/sys/unix/fcntl.go | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/fcntl.go b/vendor/golang.org/x/sys/unix/fcntl.go new file mode 100644 index 0000000..9379ba9 --- /dev/null +++ b/vendor/golang.org/x/sys/unix/fcntl.go @@ -0,0 +1,32 @@ +// 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. + +// +build darwin dragonfly freebsd linux netbsd openbsd + +package unix + +import "unsafe" + +// fcntl64Syscall is usually SYS_FCNTL, but is overridden on 32-bit Linux +// systems by flock_linux_32bit.go to be SYS_FCNTL64. +var fcntl64Syscall uintptr = SYS_FCNTL + +// FcntlInt performs a fcntl syscall on fd with the provided command and argument. +func FcntlInt(fd uintptr, cmd, arg int) (int, error) { + valptr, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(arg)) + var err error + if errno != 0 { + err = errno + } + return int(valptr), err +} + +// 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 +} |