unix: implements RenamexNp and RenameatxNp for darwin

Fixes golang/go#48425

Change-Id: Ib3619863e238eadf09da479bd2e1e47d9ab6f274
Reviewed-on: https://go-review.googlesource.com/c/sys/+/361958
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

unix/darwin_amd64_test.go

@@ -114,6 +114,8 @@ var darwinTests = [...]darwinTest{
 	{"removexattr", libc_removexattr_trampoline_addr},
 	{"rename", libc_rename_trampoline_addr},
 	{"renameat", libc_renameat_trampoline_addr},
+	{"renameatx_np", libc_renameatx_np_trampoline_addr},
+	{"renamex_np", libc_renamex_np_trampoline_addr},
 	{"revoke", libc_revoke_trampoline_addr},
 	{"rmdir", libc_rmdir_trampoline_addr},
 	{"select", libc_select_trampoline_addr},

unix/darwin_arm64_test.go

@@ -114,6 +114,8 @@ var darwinTests = [...]darwinTest{
 	{"removexattr", libc_removexattr_trampoline_addr},
 	{"rename", libc_rename_trampoline_addr},
 	{"renameat", libc_renameat_trampoline_addr},
+	{"renameatx_np", libc_renameatx_np_trampoline_addr},
+	{"renamex_np", libc_renamex_np_trampoline_addr},
 	{"revoke", libc_revoke_trampoline_addr},
 	{"rmdir", libc_rmdir_trampoline_addr},
 	{"select", libc_select_trampoline_addr},

unix/mkerrors.sh

@@ -58,6 +58,7 @@ includes_Darwin='
 #define _DARWIN_USE_64_BIT_INODE
 #define __APPLE_USE_RFC_3542
 #include <stdint.h>
+#include <sys/stdio.h>
 #include <sys/attr.h>
 #include <sys/clonefile.h>
 #include <sys/kern_control.h>

unix/syscall_darwin.go

@@ -402,6 +402,18 @@ func IoctlSetIfreqMTU(fd int, ifreq *IfreqMTU) error {
 	return ioctlPtr(fd, SIOCSIFMTU, unsafe.Pointer(ifreq))
 }
 
+//sys	renamexNp(from string, to string, flag uint32) (err error)
+
+func RenamexNp(from string, to string, flag uint32) (err error) {
+	return renamexNp(from, to, flag)
+}
+
+//sys	renameatxNp(fromfd int, from string, tofd int, to string, flag uint32) (err error)
+
+func RenameatxNp(fromfd int, from string, tofd int, to string, flag uint32) (err error) {
+	return renameatxNp(fromfd, from, tofd, to, flag)
+}
+
 //sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS_SYSCTL
 
 func Uname(uname *Utsname) error {

unix/zerrors_darwin_amd64.go

@@ -1169,6 +1169,11 @@ const (
 	PT_WRITE_D                              = 0x5
 	PT_WRITE_I                              = 0x4
 	PT_WRITE_U                              = 0x6
+	RENAME_EXCL                             = 0x4
+	RENAME_NOFOLLOW_ANY                     = 0x10
+	RENAME_RESERVED1                        = 0x8
+	RENAME_SECLUDE                          = 0x1
+	RENAME_SWAP                             = 0x2
 	RLIMIT_AS                               = 0x5
 	RLIMIT_CORE                             = 0x4
 	RLIMIT_CPU                              = 0x0

unix/zerrors_darwin_arm64.go

@@ -1169,6 +1169,11 @@ const (
 	PT_WRITE_D                              = 0x5
 	PT_WRITE_I                              = 0x4
 	PT_WRITE_U                              = 0x6
+	RENAME_EXCL                             = 0x4
+	RENAME_NOFOLLOW_ANY                     = 0x10
+	RENAME_RESERVED1                        = 0x8
+	RENAME_SECLUDE                          = 0x1
+	RENAME_SWAP                             = 0x2
 	RLIMIT_AS                               = 0x5
 	RLIMIT_CORE                             = 0x4
 	RLIMIT_CPU                              = 0x0

unix/zsyscall_darwin_amd64.go

@@ -740,6 +740,54 @@ func ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func renamexNp(from string, to string, flag uint32) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(from)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(to)
+	if err != nil {
+		return
+	}
+	_, _, e1 := syscall_syscall(libc_renamex_np_trampoline_addr, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(flag))
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+var libc_renamex_np_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_renamex_np renamex_np "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func renameatxNp(fromfd int, from string, tofd int, to string, flag uint32) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(from)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(to)
+	if err != nil {
+		return
+	}
+	_, _, e1 := syscall_syscall6(libc_renameatx_np_trampoline_addr, uintptr(fromfd), uintptr(unsafe.Pointer(_p0)), uintptr(tofd), uintptr(unsafe.Pointer(_p1)), uintptr(flag), 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+var libc_renameatx_np_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_renameatx_np renameatx_np "/usr/lib/libSystem.B.dylib"
+
+// 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_darwin_amd64.s

@@ -223,6 +223,16 @@ TEXT libc_ioctl_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_ioctl_trampoline_addr(SB), RODATA, $8
 DATA	·libc_ioctl_trampoline_addr(SB)/8, $libc_ioctl_trampoline<>(SB)
 
+TEXT libc_renamex_np_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_renamex_np(SB)
+GLOBL	·libc_renamex_np_trampoline_addr(SB), RODATA, $8
+DATA	·libc_renamex_np_trampoline_addr(SB)/8, $libc_renamex_np_trampoline<>(SB)
+
+TEXT libc_renameatx_np_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_renameatx_np(SB)
+GLOBL	·libc_renameatx_np_trampoline_addr(SB), RODATA, $8
+DATA	·libc_renameatx_np_trampoline_addr(SB)/8, $libc_renameatx_np_trampoline<>(SB)
+
 TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_sysctl(SB)
 GLOBL	·libc_sysctl_trampoline_addr(SB), RODATA, $8

unix/zsyscall_darwin_arm64.go

@@ -740,6 +740,54 @@ func ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func renamexNp(from string, to string, flag uint32) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(from)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(to)
+	if err != nil {
+		return
+	}
+	_, _, e1 := syscall_syscall(libc_renamex_np_trampoline_addr, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(flag))
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+var libc_renamex_np_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_renamex_np renamex_np "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func renameatxNp(fromfd int, from string, tofd int, to string, flag uint32) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(from)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = BytePtrFromString(to)
+	if err != nil {
+		return
+	}
+	_, _, e1 := syscall_syscall6(libc_renameatx_np_trampoline_addr, uintptr(fromfd), uintptr(unsafe.Pointer(_p0)), uintptr(tofd), uintptr(unsafe.Pointer(_p1)), uintptr(flag), 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+var libc_renameatx_np_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_renameatx_np renameatx_np "/usr/lib/libSystem.B.dylib"
+
+// 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_darwin_arm64.s

@@ -223,6 +223,16 @@ TEXT libc_ioctl_trampoline<>(SB),NOSPLIT,$0-0
 GLOBL	·libc_ioctl_trampoline_addr(SB), RODATA, $8
 DATA	·libc_ioctl_trampoline_addr(SB)/8, $libc_ioctl_trampoline<>(SB)
 
+TEXT libc_renamex_np_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_renamex_np(SB)
+GLOBL	·libc_renamex_np_trampoline_addr(SB), RODATA, $8
+DATA	·libc_renamex_np_trampoline_addr(SB)/8, $libc_renamex_np_trampoline<>(SB)
+
+TEXT libc_renameatx_np_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_renameatx_np(SB)
+GLOBL	·libc_renameatx_np_trampoline_addr(SB), RODATA, $8
+DATA	·libc_renameatx_np_trampoline_addr(SB)/8, $libc_renameatx_np_trampoline<>(SB)
+
 TEXT libc_sysctl_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_sysctl(SB)
 GLOBL	·libc_sysctl_trampoline_addr(SB), RODATA, $8