unix: add PthreadChdir and PthreadFchdir on darwin

Fixes golang/go#68226

Change-Id: I92052e2319e4edde21b5e1e47ddb5b261d81448a
GitHub-Last-Rev: bc02d6d44bb64ad202c97d3525d5355e8a027a5e
GitHub-Pull-Request: golang/sys#201
Reviewed-on: https://go-review.googlesource.com/c/sys/+/595677
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

unix/darwin_amd64_test.go

@@ -101,6 +101,8 @@ var darwinTests = [...]darwinTest{
 	{"pipe", libc_pipe_trampoline_addr},
 	{"poll", libc_poll_trampoline_addr},
 	{"pread", libc_pread_trampoline_addr},
+	{"pthread_chdir_np", libc_pthread_chdir_np_trampoline_addr},
+	{"pthread_fchdir_np", libc_pthread_fchdir_np_trampoline_addr},
 	{"ptrace", libc_ptrace_trampoline_addr},
 	{"pwrite", libc_pwrite_trampoline_addr},
 	{"read", libc_read_trampoline_addr},

unix/darwin_arm64_test.go

@@ -101,6 +101,8 @@ var darwinTests = [...]darwinTest{
 	{"pipe", libc_pipe_trampoline_addr},
 	{"poll", libc_poll_trampoline_addr},
 	{"pread", libc_pread_trampoline_addr},
+	{"pthread_chdir_np", libc_pthread_chdir_np_trampoline_addr},
+	{"pthread_fchdir_np", libc_pthread_fchdir_np_trampoline_addr},
 	{"ptrace", libc_ptrace_trampoline_addr},
 	{"pwrite", libc_pwrite_trampoline_addr},
 	{"read", libc_read_trampoline_addr},

unix/syscall_darwin.go

@@ -542,6 +542,18 @@ func SysctlKinfoProcSlice(name string, args ...int) ([]KinfoProc, error) {
 	}
 }
 
+//sys	pthread_chdir_np(path string) (err error)
+
+func PthreadChdir(path string) (err error) {
+	return pthread_chdir_np(path)
+}
+
+//sys	pthread_fchdir_np(fd int) (err error)
+
+func PthreadFchdir(fd int) (err error) {
+	return pthread_fchdir_np(fd)
+}
+
 //sys	sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error)
 
 //sys	shmat(id int, addr uintptr, flag int) (ret uintptr, err error)

unix/zsyscall_darwin_amd64.go

@@ -760,6 +760,39 @@ var libc_sysctl_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pthread_chdir_np(path string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	_, _, e1 := syscall_syscall(libc_pthread_chdir_np_trampoline_addr, uintptr(unsafe.Pointer(_p0)), 0, 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+var libc_pthread_chdir_np_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_pthread_chdir_np pthread_chdir_np "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func pthread_fchdir_np(fd int) (err error) {
+	_, _, e1 := syscall_syscall(libc_pthread_fchdir_np_trampoline_addr, uintptr(fd), 0, 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+var libc_pthread_fchdir_np_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_pthread_fchdir_np pthread_fchdir_np "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error) {
 	_, _, e1 := syscall_syscall6(libc_sendfile_trampoline_addr, uintptr(infd), uintptr(outfd), uintptr(offset), uintptr(unsafe.Pointer(len)), uintptr(hdtr), uintptr(flags))
 	if e1 != 0 {

unix/zsyscall_darwin_amd64.s

@@ -228,6 +228,16 @@ 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_pthread_chdir_np_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_pthread_chdir_np(SB)
+GLOBL	·libc_pthread_chdir_np_trampoline_addr(SB), RODATA, $8
+DATA	·libc_pthread_chdir_np_trampoline_addr(SB)/8, $libc_pthread_chdir_np_trampoline<>(SB)
+
+TEXT libc_pthread_fchdir_np_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_pthread_fchdir_np(SB)
+GLOBL	·libc_pthread_fchdir_np_trampoline_addr(SB), RODATA, $8
+DATA	·libc_pthread_fchdir_np_trampoline_addr(SB)/8, $libc_pthread_fchdir_np_trampoline<>(SB)
+
 TEXT libc_sendfile_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_sendfile(SB)
 GLOBL	·libc_sendfile_trampoline_addr(SB), RODATA, $8

unix/zsyscall_darwin_arm64.go

@@ -760,6 +760,39 @@ var libc_sysctl_trampoline_addr uintptr
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pthread_chdir_np(path string) (err error) {
+	var _p0 *byte
+	_p0, err = BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	_, _, e1 := syscall_syscall(libc_pthread_chdir_np_trampoline_addr, uintptr(unsafe.Pointer(_p0)), 0, 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+var libc_pthread_chdir_np_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_pthread_chdir_np pthread_chdir_np "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func pthread_fchdir_np(fd int) (err error) {
+	_, _, e1 := syscall_syscall(libc_pthread_fchdir_np_trampoline_addr, uintptr(fd), 0, 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+var libc_pthread_fchdir_np_trampoline_addr uintptr
+
+//go:cgo_import_dynamic libc_pthread_fchdir_np pthread_fchdir_np "/usr/lib/libSystem.B.dylib"
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error) {
 	_, _, e1 := syscall_syscall6(libc_sendfile_trampoline_addr, uintptr(infd), uintptr(outfd), uintptr(offset), uintptr(unsafe.Pointer(len)), uintptr(hdtr), uintptr(flags))
 	if e1 != 0 {

unix/zsyscall_darwin_arm64.s

@@ -228,6 +228,16 @@ 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_pthread_chdir_np_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_pthread_chdir_np(SB)
+GLOBL	·libc_pthread_chdir_np_trampoline_addr(SB), RODATA, $8
+DATA	·libc_pthread_chdir_np_trampoline_addr(SB)/8, $libc_pthread_chdir_np_trampoline<>(SB)
+
+TEXT libc_pthread_fchdir_np_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_pthread_fchdir_np(SB)
+GLOBL	·libc_pthread_fchdir_np_trampoline_addr(SB), RODATA, $8
+DATA	·libc_pthread_fchdir_np_trampoline_addr(SB)/8, $libc_pthread_fchdir_np_trampoline<>(SB)
+
 TEXT libc_sendfile_trampoline<>(SB),NOSPLIT,$0-0
 	JMP	libc_sendfile(SB)
 GLOBL	·libc_sendfile_trampoline_addr(SB), RODATA, $8