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unix: use fcntl(2) libc stub on OpenBSD

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Future OpenBSD releases will remove the syscall(2) interface.
This converts the Fcntl functions to use fcntl(2) from libc,
rather than indirectly through syscall(2).

Updates golang/go#63900.

Change-Id: I50c3b91cb40245653c772e65b0b15c625974bebe
GitHub-Last-Rev: 9c62104c43c63885d0cb4b198eb8c029bc644fa6
GitHub-Pull-Request: golang/sys#179
Reviewed-on: https://go-review.googlesource.com/c/sys/+/538995
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
This commit is contained in:
Josh Rickmar
2023-11-06 12:49:47 +00:00
committed by Joel Sing
parent cb378ae1ff
commit ec230dae7f
16 changed files with 233 additions and 1 deletions
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unix/syscall_openbsd.go
+14
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@@ -166,6 +166,20 @@ func Getresgid() (rgid, egid, sgid int) {
//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
//sys fcntl(fd int, cmd int, arg int) (n int, err error)
//sys fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (n int, err error) = SYS_FCNTL
// 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 {
_, err := fcntlPtr(int(fd), cmd, unsafe.Pointer(lk))
return err
}
//sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {