From 73df946d56c74384511a194dd01dbe099584fd1a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:14:23 +0200 Subject: Adding upstream version 1.16.10. Signed-off-by: Daniel Baumann --- src/syscall/flock.go | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 src/syscall/flock.go (limited to 'src/syscall/flock.go') diff --git a/src/syscall/flock.go b/src/syscall/flock.go new file mode 100644 index 0000000..568efca --- /dev/null +++ b/src/syscall/flock.go @@ -0,0 +1,22 @@ +// +build linux freebsd openbsd netbsd dragonfly + +// 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. + +package syscall + +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 + +// 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 +} -- cgit v1.2.3