From 974b2011ca2a74ca1137558771b428bddb2e7df3 Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Thu, 18 Apr 2024 09:39:31 +0200 Subject: internal/syscall/unix: implement Eaccess on darwin Like on other Unix-like platforms, use faccessat(AT_FDCWD, path, mode, AT_EACCESS). Change-Id: I6e04b4244f8e90bd3b35b1b8a9ca38fe845b34ae Reviewed-on: https://go-review.googlesource.com/c/go/+/579976 Auto-Submit: Tobias Klauser LUCI-TryBot-Result: Go LUCI Reviewed-by: Cherry Mui Reviewed-by: Ian Lance Taylor --- src/internal/syscall/unix/asm_darwin.s | 1 + src/internal/syscall/unix/at_sysnum_darwin.go | 10 ++++++--- src/internal/syscall/unix/eaccess_darwin.go | 31 +++++++++++++++++++++++++++ src/internal/syscall/unix/eaccess_other.go | 2 +- 4 files changed, 40 insertions(+), 4 deletions(-) create mode 100644 src/internal/syscall/unix/eaccess_darwin.go diff --git a/src/internal/syscall/unix/asm_darwin.s b/src/internal/syscall/unix/asm_darwin.s index 0b8efb1506d..99f28765fe0 100644 --- a/src/internal/syscall/unix/asm_darwin.s +++ b/src/internal/syscall/unix/asm_darwin.s @@ -22,3 +22,4 @@ TEXT ·libc_getpwuid_r_trampoline(SB),NOSPLIT,$0-0; JMP libc_getpwuid_r(SB) TEXT ·libc_getgrnam_r_trampoline(SB),NOSPLIT,$0-0; JMP libc_getgrnam_r(SB) TEXT ·libc_getgrgid_r_trampoline(SB),NOSPLIT,$0-0; JMP libc_getgrgid_r(SB) TEXT ·libc_sysconf_trampoline(SB),NOSPLIT,$0-0; JMP libc_sysconf(SB) +TEXT ·libc_faccessat_trampoline(SB),NOSPLIT,$0-0; JMP libc_faccessat(SB) diff --git a/src/internal/syscall/unix/at_sysnum_darwin.go b/src/internal/syscall/unix/at_sysnum_darwin.go index 208ff34d038..77b0af80b5d 100644 --- a/src/internal/syscall/unix/at_sysnum_darwin.go +++ b/src/internal/syscall/unix/at_sysnum_darwin.go @@ -4,7 +4,11 @@ package unix -const AT_REMOVEDIR = 0x80 -const AT_SYMLINK_NOFOLLOW = 0x0020 +const ( + AT_EACCESS = 0x10 + AT_FDCWD = -0x2 + AT_REMOVEDIR = 0x80 + AT_SYMLINK_NOFOLLOW = 0x0020 -const UTIME_OMIT = -0x2 + UTIME_OMIT = -0x2 +) diff --git a/src/internal/syscall/unix/eaccess_darwin.go b/src/internal/syscall/unix/eaccess_darwin.go new file mode 100644 index 00000000000..0fa8d17afea --- /dev/null +++ b/src/internal/syscall/unix/eaccess_darwin.go @@ -0,0 +1,31 @@ +// Copyright 2024 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package unix + +import ( + "internal/abi" + "syscall" + "unsafe" +) + +func libc_faccessat_trampoline() + +//go:cgo_import_dynamic libc_faccessat faccessat "/usr/lib/libSystem.B.dylib" + +func faccessat(dirfd int, path string, mode uint32, flags int) error { + p, err := syscall.BytePtrFromString(path) + if err != nil { + return err + } + _, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_faccessat_trampoline), uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(mode), uintptr(flags), 0, 0) + if errno != 0 { + return errno + } + return nil +} + +func Eaccess(path string, mode uint32) error { + return faccessat(AT_FDCWD, path, mode, AT_EACCESS) +} diff --git a/src/internal/syscall/unix/eaccess_other.go b/src/internal/syscall/unix/eaccess_other.go index 1a633ae857a..3da3a64f0e6 100644 --- a/src/internal/syscall/unix/eaccess_other.go +++ b/src/internal/syscall/unix/eaccess_other.go @@ -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 unix && !dragonfly && !freebsd && !linux && !openbsd && !netbsd +//go:build unix && !darwin && !dragonfly && !freebsd && !linux && !openbsd && !netbsd package unix -- cgit v1.2.3-54-g00ecf