unix: add Getresuid and Getresgid for OpenBSD

Addresses golang/go#60483 for OpenBSD.

This change was successfully tested on amd64 and adjusted accordingly for the other architectures.

Change-Id: Id63cca342d81d2cc5854eb2923ca7e66bfaa91bf
GitHub-Last-Rev: cff11701438edc20bef2961bb73bf9c6ea81b4a1
GitHub-Pull-Request: golang/sys#160
Reviewed-on: https://go-review.googlesource.com/c/sys/+/500655
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

unix/syscall_openbsd.go

@@ -151,6 +151,21 @@ func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
 	return
 }
 
+//sysnb	getresuid(ruid *_C_int, euid *_C_int, suid *_C_int)
+//sysnb	getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int)
+
+func Getresuid() (ruid, euid, suid int) {
+	var r, e, s _C_int
+	getresuid(&r, &e, &s)
+	return int(r), int(e), int(s)
+}
+
+func Getresgid() (rgid, egid, sgid int) {
+	var r, e, s _C_int
+	getresgid(&r, &e, &s)
+	return int(r), int(e), int(s)
+}
+
 //sys	ioctl(fd int, req uint, arg uintptr) (err error)
 //sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL
 
@@ -338,8 +353,6 @@ func Uname(uname *Utsname) error {
 // getgid
 // getitimer
 // getlogin
-// getresgid
-// getresuid
 // getthrid
 // ktrace
 // lfs_bmapv

unix/zsyscall_openbsd_386.go

@@ -519,6 +519,28 @@ var libc_getcwd_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func getresuid(ruid *_C_int, euid *_C_int, suid *_C_int) {
+	syscall_rawSyscall(libc_getresuid_trampoline_addr, uintptr(unsafe.Pointer(ruid)), uintptr(unsafe.Pointer(euid)), uintptr(unsafe.Pointer(suid)))
+	return
+}
+
+var libc_getresuid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresuid getresuid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int) {
+	syscall_rawSyscall(libc_getresgid_trampoline_addr, uintptr(unsafe.Pointer(rgid)), uintptr(unsafe.Pointer(egid)), uintptr(unsafe.Pointer(sgid)))
+	return
+}
+
+var libc_getresgid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresgid getresgid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func ioctl(fd int, req uint, arg uintptr) (err error) {
 	_, _, e1 := syscall_syscall(libc_ioctl_trampoline_addr, uintptr(fd), uintptr(req), uintptr(arg))
 	if e1 != 0 {

unix/zsyscall_openbsd_386.s

@@ -158,6 +158,16 @@ TEXT libc_getcwd_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_getcwd_trampoline_addr(SB), RODATA, $4
 DATA	·libc_getcwd_trampoline_addr(SB)/4, $libc_getcwd_trampoline<>(SB)
 
+TEXT libc_getresuid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresuid(SB)
+GLOBL	·libc_getresuid_trampoline_addr(SB), RODATA, $4
+DATA	·libc_getresuid_trampoline_addr(SB)/4, $libc_getresuid_trampoline<>(SB)
+
+TEXT libc_getresgid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresgid(SB)
+GLOBL	·libc_getresgid_trampoline_addr(SB), RODATA, $4
+DATA	·libc_getresgid_trampoline_addr(SB)/4, $libc_getresgid_trampoline<>(SB)
+
 TEXT libc_ioctl_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_ioctl(SB)
 GLOBL	·libc_ioctl_trampoline_addr(SB), RODATA, $4

unix/zsyscall_openbsd_amd64.go

@@ -519,15 +519,29 @@ var libc_getcwd_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func ioctl(fd int, req uint, arg uintptr) (err error) {
+func getresuid(ruid *_C_int, euid *_C_int, suid *_C_int) {
-	_, _, e1 := syscall_syscall(libc_ioctl_trampoline_addr, uintptr(fd), uintptr(req), uintptr(arg))
+	syscall_rawSyscall(libc_getresuid_trampoline_addr, uintptr(unsafe.Pointer(ruid)), uintptr(unsafe.Pointer(euid)), uintptr(unsafe.Pointer(suid)))
-	if e1 != 0 {
-		err = errnoErr(e1)
-	}
 	return
 }
 
-func ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) {
+var libc_getresuid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresuid getresuid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int) {
+	syscall_rawSyscall(libc_getresgid_trampoline_addr, uintptr(unsafe.Pointer(rgid)), uintptr(unsafe.Pointer(egid)), uintptr(unsafe.Pointer(sgid)))
+	return
+}
+
+var libc_getresgid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresgid getresgid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func ioctl(fd int, req uint, arg uintptr) (err error) {
 	_, _, e1 := syscall_syscall(libc_ioctl_trampoline_addr, uintptr(fd), uintptr(req), uintptr(arg))
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -541,6 +555,16 @@ var libc_ioctl_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) {
+	_, _, e1 := syscall_syscall(libc_ioctl_trampoline_addr, uintptr(fd), uintptr(req), uintptr(arg))
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) {
 	var _p0 unsafe.Pointer
 	if len(mib) > 0 {

unix/zsyscall_openbsd_amd64.s

@@ -158,6 +158,16 @@ TEXT libc_getcwd_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_getcwd_trampoline_addr(SB), RODATA, $8
 DATA	·libc_getcwd_trampoline_addr(SB)/8, $libc_getcwd_trampoline<>(SB)
 
+TEXT libc_getresuid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresuid(SB)
+GLOBL	·libc_getresuid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresuid_trampoline_addr(SB)/8, $libc_getresuid_trampoline<>(SB)
+
+TEXT libc_getresgid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresgid(SB)
+GLOBL	·libc_getresgid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresgid_trampoline_addr(SB)/8, $libc_getresgid_trampoline<>(SB)
+
 TEXT libc_ioctl_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_ioctl(SB)
 GLOBL	·libc_ioctl_trampoline_addr(SB), RODATA, $8

unix/zsyscall_openbsd_arm.go

@@ -519,6 +519,28 @@ var libc_getcwd_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func getresuid(ruid *_C_int, euid *_C_int, suid *_C_int) {
+	syscall_rawSyscall(libc_getresuid_trampoline_addr, uintptr(unsafe.Pointer(ruid)), uintptr(unsafe.Pointer(euid)), uintptr(unsafe.Pointer(suid)))
+	return
+}
+
+var libc_getresuid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresuid getresuid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int) {
+	syscall_rawSyscall(libc_getresgid_trampoline_addr, uintptr(unsafe.Pointer(rgid)), uintptr(unsafe.Pointer(egid)), uintptr(unsafe.Pointer(sgid)))
+	return
+}
+
+var libc_getresgid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresgid getresgid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func ioctl(fd int, req uint, arg uintptr) (err error) {
 	_, _, e1 := syscall_syscall(libc_ioctl_trampoline_addr, uintptr(fd), uintptr(req), uintptr(arg))
 	if e1 != 0 {

unix/zsyscall_openbsd_arm.s

@@ -158,6 +158,16 @@ TEXT libc_getcwd_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_getcwd_trampoline_addr(SB), RODATA, $4
 DATA	·libc_getcwd_trampoline_addr(SB)/4, $libc_getcwd_trampoline<>(SB)
 
+TEXT libc_getresuid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresuid(SB)
+GLOBL	·libc_getresuid_trampoline_addr(SB), RODATA, $4
+DATA	·libc_getresuid_trampoline_addr(SB)/4, $libc_getresuid_trampoline<>(SB)
+
+TEXT libc_getresgid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresgid(SB)
+GLOBL	·libc_getresgid_trampoline_addr(SB), RODATA, $4
+DATA	·libc_getresgid_trampoline_addr(SB)/4, $libc_getresgid_trampoline<>(SB)
+
 TEXT libc_ioctl_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_ioctl(SB)
 GLOBL	·libc_ioctl_trampoline_addr(SB), RODATA, $4

unix/zsyscall_openbsd_arm64.go

@@ -519,6 +519,28 @@ var libc_getcwd_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func getresuid(ruid *_C_int, euid *_C_int, suid *_C_int) {
+	syscall_rawSyscall(libc_getresuid_trampoline_addr, uintptr(unsafe.Pointer(ruid)), uintptr(unsafe.Pointer(euid)), uintptr(unsafe.Pointer(suid)))
+	return
+}
+
+var libc_getresuid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresuid getresuid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int) {
+	syscall_rawSyscall(libc_getresgid_trampoline_addr, uintptr(unsafe.Pointer(rgid)), uintptr(unsafe.Pointer(egid)), uintptr(unsafe.Pointer(sgid)))
+	return
+}
+
+var libc_getresgid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresgid getresgid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func ioctl(fd int, req uint, arg uintptr) (err error) {
 	_, _, e1 := syscall_syscall(libc_ioctl_trampoline_addr, uintptr(fd), uintptr(req), uintptr(arg))
 	if e1 != 0 {

unix/zsyscall_openbsd_arm64.s

@@ -158,6 +158,16 @@ TEXT libc_getcwd_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_getcwd_trampoline_addr(SB), RODATA, $8
 DATA	·libc_getcwd_trampoline_addr(SB)/8, $libc_getcwd_trampoline<>(SB)
 
+TEXT libc_getresuid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresuid(SB)
+GLOBL	·libc_getresuid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresuid_trampoline_addr(SB)/8, $libc_getresuid_trampoline<>(SB)
+
+TEXT libc_getresgid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresgid(SB)
+GLOBL	·libc_getresgid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresgid_trampoline_addr(SB)/8, $libc_getresgid_trampoline<>(SB)
+
 TEXT libc_ioctl_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_ioctl(SB)
 GLOBL	·libc_ioctl_trampoline_addr(SB), RODATA, $8

unix/zsyscall_openbsd_mips64.go

@@ -519,6 +519,28 @@ var libc_getcwd_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func getresuid(ruid *_C_int, euid *_C_int, suid *_C_int) {
+	syscall_rawSyscall(libc_getresuid_trampoline_addr, uintptr(unsafe.Pointer(ruid)), uintptr(unsafe.Pointer(euid)), uintptr(unsafe.Pointer(suid)))
+	return
+}
+
+var libc_getresuid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresuid getresuid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int) {
+	syscall_rawSyscall(libc_getresgid_trampoline_addr, uintptr(unsafe.Pointer(rgid)), uintptr(unsafe.Pointer(egid)), uintptr(unsafe.Pointer(sgid)))
+	return
+}
+
+var libc_getresgid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresgid getresgid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func ioctl(fd int, req uint, arg uintptr) (err error) {
 	_, _, e1 := syscall_syscall(libc_ioctl_trampoline_addr, uintptr(fd), uintptr(req), uintptr(arg))
 	if e1 != 0 {

unix/zsyscall_openbsd_mips64.s

@@ -158,6 +158,16 @@ TEXT libc_getcwd_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_getcwd_trampoline_addr(SB), RODATA, $8
 DATA	·libc_getcwd_trampoline_addr(SB)/8, $libc_getcwd_trampoline<>(SB)
 
+TEXT libc_getresuid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresuid(SB)
+GLOBL	·libc_getresuid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresuid_trampoline_addr(SB)/8, $libc_getresuid_trampoline<>(SB)
+
+TEXT libc_getresgid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresgid(SB)
+GLOBL	·libc_getresgid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresgid_trampoline_addr(SB)/8, $libc_getresgid_trampoline<>(SB)
+
 TEXT libc_ioctl_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_ioctl(SB)
 GLOBL	·libc_ioctl_trampoline_addr(SB), RODATA, $8

unix/zsyscall_openbsd_ppc64.go

@@ -519,6 +519,28 @@ var libc_getcwd_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func getresuid(ruid *_C_int, euid *_C_int, suid *_C_int) {
+	syscall_rawSyscall(libc_getresuid_trampoline_addr, uintptr(unsafe.Pointer(ruid)), uintptr(unsafe.Pointer(euid)), uintptr(unsafe.Pointer(suid)))
+	return
+}
+
+var libc_getresuid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresuid getresuid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int) {
+	syscall_rawSyscall(libc_getresgid_trampoline_addr, uintptr(unsafe.Pointer(rgid)), uintptr(unsafe.Pointer(egid)), uintptr(unsafe.Pointer(sgid)))
+	return
+}
+
+var libc_getresgid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresgid getresgid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func ioctl(fd int, req uint, arg uintptr) (err error) {
 	_, _, e1 := syscall_syscall(libc_ioctl_trampoline_addr, uintptr(fd), uintptr(req), uintptr(arg))
 	if e1 != 0 {

unix/zsyscall_openbsd_ppc64.s

@@ -189,6 +189,18 @@ TEXT libc_getcwd_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_getcwd_trampoline_addr(SB), RODATA, $8
 DATA	·libc_getcwd_trampoline_addr(SB)/8, $libc_getcwd_trampoline<>(SB)
 
+TEXT libc_getresuid_trampoline<>(SB),NOSPLIT,$0-0
+	CALL	libc_getresuid(SB)
+	RET
+GLOBL	·libc_getresuid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresuid_trampoline_addr(SB)/8, $libc_getresuid_trampoline<>(SB)
+
+TEXT libc_getresgid_trampoline<>(SB),NOSPLIT,$0-0
+	CALL	libc_getresgid(SB)
+	RET
+GLOBL	·libc_getresgid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresgid_trampoline_addr(SB)/8, $libc_getresgid_trampoline<>(SB)
+
 TEXT libc_ioctl_trampoline<>(SB),NOSPLIT,$0-0
 	CALL	libc_ioctl(SB)
 	RET

unix/zsyscall_openbsd_riscv64.go

@@ -519,6 +519,28 @@ var libc_getcwd_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func getresuid(ruid *_C_int, euid *_C_int, suid *_C_int) {
+	syscall_rawSyscall(libc_getresuid_trampoline_addr, uintptr(unsafe.Pointer(ruid)), uintptr(unsafe.Pointer(euid)), uintptr(unsafe.Pointer(suid)))
+	return
+}
+
+var libc_getresuid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresuid getresuid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int) {
+	syscall_rawSyscall(libc_getresgid_trampoline_addr, uintptr(unsafe.Pointer(rgid)), uintptr(unsafe.Pointer(egid)), uintptr(unsafe.Pointer(sgid)))
+	return
+}
+
+var libc_getresgid_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_getresgid getresgid "libc.so"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func ioctl(fd int, req uint, arg uintptr) (err error) {
 	_, _, e1 := syscall_syscall(libc_ioctl_trampoline_addr, uintptr(fd), uintptr(req), uintptr(arg))
 	if e1 != 0 {

unix/zsyscall_openbsd_riscv64.s

@@ -158,6 +158,16 @@ TEXT libc_getcwd_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_getcwd_trampoline_addr(SB), RODATA, $8
 DATA	·libc_getcwd_trampoline_addr(SB)/8, $libc_getcwd_trampoline<>(SB)
 
+TEXT libc_getresuid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresuid(SB)
+GLOBL	·libc_getresuid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresuid_trampoline_addr(SB)/8, $libc_getresuid_trampoline<>(SB)
+
+TEXT libc_getresgid_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_getresgid(SB)
+GLOBL	·libc_getresgid_trampoline_addr(SB), RODATA, $8
+DATA	·libc_getresgid_trampoline_addr(SB)/8, $libc_getresgid_trampoline<>(SB)
+
 TEXT libc_ioctl_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_ioctl(SB)
 GLOBL	·libc_ioctl_trampoline_addr(SB), RODATA, $8