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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: 9c62104c43
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
2023-11-03 13:04:25 +00:00
committed by Joel Sing
parent cb378ae1ff
commit ec230dae7f
16 changed files with 233 additions and 1 deletions
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2
unix/fcntl.go
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@@ -2,7 +2,7 @@
// 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 || openbsd
//go:build dragonfly || freebsd || linux || netbsd
package unix

14
unix/syscall_openbsd.go
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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) {

26
unix/zsyscall_openbsd_386.go
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@@ -584,6 +584,32 @@ var libc_sysctl_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntl(fd int, cmd int, arg int) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_fcntl_trampoline_addr uintptr
//go:cgo_import_dynamic libc_fcntl fcntl "libc.so"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
r0, _, e1 := syscall_syscall6(libc_ppoll_trampoline_addr, uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)), 0, 0)
n = int(r0)

5
unix/zsyscall_openbsd_386.s
View File

@@ -178,6 +178,11 @@ TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
GLOBL ·libc_sysctl_trampoline_addr(SB), RODATA, $4
DATA ·libc_sysctl_trampoline_addr(SB)/4, $libc_sysctl_trampoline<>(SB)
TEXT libc_fcntl_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_fcntl(SB)
GLOBL ·libc_fcntl_trampoline_addr(SB), RODATA, $4
DATA ·libc_fcntl_trampoline_addr(SB)/4, $libc_fcntl_trampoline<>(SB)
TEXT libc_ppoll_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_ppoll(SB)
GLOBL ·libc_ppoll_trampoline_addr(SB), RODATA, $4

26
unix/zsyscall_openbsd_amd64.go
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@@ -584,6 +584,32 @@ var libc_sysctl_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntl(fd int, cmd int, arg int) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_fcntl_trampoline_addr uintptr
//go:cgo_import_dynamic libc_fcntl fcntl "libc.so"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
r0, _, e1 := syscall_syscall6(libc_ppoll_trampoline_addr, uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)), 0, 0)
n = int(r0)

5
unix/zsyscall_openbsd_amd64.s
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@@ -178,6 +178,11 @@ TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
GLOBL ·libc_sysctl_trampoline_addr(SB), RODATA, $8
DATA ·libc_sysctl_trampoline_addr(SB)/8, $libc_sysctl_trampoline<>(SB)
TEXT libc_fcntl_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_fcntl(SB)
GLOBL ·libc_fcntl_trampoline_addr(SB), RODATA, $8
DATA ·libc_fcntl_trampoline_addr(SB)/8, $libc_fcntl_trampoline<>(SB)
TEXT libc_ppoll_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_ppoll(SB)
GLOBL ·libc_ppoll_trampoline_addr(SB), RODATA, $8

26
unix/zsyscall_openbsd_arm.go
View File

@@ -584,6 +584,32 @@ var libc_sysctl_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntl(fd int, cmd int, arg int) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_fcntl_trampoline_addr uintptr
//go:cgo_import_dynamic libc_fcntl fcntl "libc.so"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
r0, _, e1 := syscall_syscall6(libc_ppoll_trampoline_addr, uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)), 0, 0)
n = int(r0)

5
unix/zsyscall_openbsd_arm.s
View File

@@ -178,6 +178,11 @@ TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
GLOBL ·libc_sysctl_trampoline_addr(SB), RODATA, $4
DATA ·libc_sysctl_trampoline_addr(SB)/4, $libc_sysctl_trampoline<>(SB)
TEXT libc_fcntl_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_fcntl(SB)
GLOBL ·libc_fcntl_trampoline_addr(SB), RODATA, $4
DATA ·libc_fcntl_trampoline_addr(SB)/4, $libc_fcntl_trampoline<>(SB)
TEXT libc_ppoll_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_ppoll(SB)
GLOBL ·libc_ppoll_trampoline_addr(SB), RODATA, $4

26
unix/zsyscall_openbsd_arm64.go
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@@ -584,6 +584,32 @@ var libc_sysctl_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntl(fd int, cmd int, arg int) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_fcntl_trampoline_addr uintptr
//go:cgo_import_dynamic libc_fcntl fcntl "libc.so"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
r0, _, e1 := syscall_syscall6(libc_ppoll_trampoline_addr, uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)), 0, 0)
n = int(r0)

5
unix/zsyscall_openbsd_arm64.s
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@@ -178,6 +178,11 @@ TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
GLOBL ·libc_sysctl_trampoline_addr(SB), RODATA, $8
DATA ·libc_sysctl_trampoline_addr(SB)/8, $libc_sysctl_trampoline<>(SB)
TEXT libc_fcntl_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_fcntl(SB)
GLOBL ·libc_fcntl_trampoline_addr(SB), RODATA, $8
DATA ·libc_fcntl_trampoline_addr(SB)/8, $libc_fcntl_trampoline<>(SB)
TEXT libc_ppoll_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_ppoll(SB)
GLOBL ·libc_ppoll_trampoline_addr(SB), RODATA, $8

26
unix/zsyscall_openbsd_mips64.go
View File

@@ -584,6 +584,32 @@ var libc_sysctl_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntl(fd int, cmd int, arg int) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_fcntl_trampoline_addr uintptr
//go:cgo_import_dynamic libc_fcntl fcntl "libc.so"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
r0, _, e1 := syscall_syscall6(libc_ppoll_trampoline_addr, uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)), 0, 0)
n = int(r0)

5
unix/zsyscall_openbsd_mips64.s
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@@ -178,6 +178,11 @@ TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
GLOBL ·libc_sysctl_trampoline_addr(SB), RODATA, $8
DATA ·libc_sysctl_trampoline_addr(SB)/8, $libc_sysctl_trampoline<>(SB)
TEXT libc_fcntl_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_fcntl(SB)
GLOBL ·libc_fcntl_trampoline_addr(SB), RODATA, $8
DATA ·libc_fcntl_trampoline_addr(SB)/8, $libc_fcntl_trampoline<>(SB)
TEXT libc_ppoll_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_ppoll(SB)
GLOBL ·libc_ppoll_trampoline_addr(SB), RODATA, $8

26
unix/zsyscall_openbsd_ppc64.go
View File

@@ -584,6 +584,32 @@ var libc_sysctl_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntl(fd int, cmd int, arg int) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_fcntl_trampoline_addr uintptr
//go:cgo_import_dynamic libc_fcntl fcntl "libc.so"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
r0, _, e1 := syscall_syscall6(libc_ppoll_trampoline_addr, uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)), 0, 0)
n = int(r0)

6
unix/zsyscall_openbsd_ppc64.s
View File

@@ -213,6 +213,12 @@ TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
GLOBL ·libc_sysctl_trampoline_addr(SB), RODATA, $8
DATA ·libc_sysctl_trampoline_addr(SB)/8, $libc_sysctl_trampoline<>(SB)
TEXT libc_fcntl_trampoline<>(SB),NOSPLIT,$0-0
CALL libc_fcntl(SB)
RET
GLOBL ·libc_fcntl_trampoline_addr(SB), RODATA, $8
DATA ·libc_fcntl_trampoline_addr(SB)/8, $libc_fcntl_trampoline<>(SB)
TEXT libc_ppoll_trampoline<>(SB),NOSPLIT,$0-0
CALL libc_ppoll(SB)
RET

26
unix/zsyscall_openbsd_riscv64.go
View File

@@ -584,6 +584,32 @@ var libc_sysctl_trampoline_addr uintptr
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntl(fd int, cmd int, arg int) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_fcntl_trampoline_addr uintptr
//go:cgo_import_dynamic libc_fcntl fcntl "libc.so"
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (n int, err error) {
r0, _, e1 := syscall_syscall(libc_fcntl_trampoline_addr, uintptr(fd), uintptr(cmd), uintptr(arg))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
r0, _, e1 := syscall_syscall6(libc_ppoll_trampoline_addr, uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)), 0, 0)
n = int(r0)

5
unix/zsyscall_openbsd_riscv64.s
View File

@@ -178,6 +178,11 @@ TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
GLOBL ·libc_sysctl_trampoline_addr(SB), RODATA, $8
DATA ·libc_sysctl_trampoline_addr(SB)/8, $libc_sysctl_trampoline<>(SB)
TEXT libc_fcntl_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_fcntl(SB)
GLOBL ·libc_fcntl_trampoline_addr(SB), RODATA, $8
DATA ·libc_fcntl_trampoline_addr(SB)/8, $libc_fcntl_trampoline<>(SB)
TEXT libc_ppoll_trampoline<>(SB),NOSPLIT,$0-0
JMP libc_ppoll(SB)
GLOBL ·libc_ppoll_trampoline_addr(SB), RODATA, $8