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 <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>

Author: zchee

unix/darwin_amd64_test.go

@@ -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/darwin_arm64_test.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/mkerrors.sh

@@ -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/syscall_darwin.go

@@ -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