1419580c6SSiva Chandra Reddy //===-- Linux implementation of access ------------------------------------===// 2419580c6SSiva Chandra Reddy // 3419580c6SSiva Chandra Reddy // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4419580c6SSiva Chandra Reddy // See https://llvm.org/LICENSE.txt for license information. 5419580c6SSiva Chandra Reddy // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6419580c6SSiva Chandra Reddy // 7419580c6SSiva Chandra Reddy //===----------------------------------------------------------------------===// 8419580c6SSiva Chandra Reddy 9419580c6SSiva Chandra Reddy #include "src/unistd/access.h" 10419580c6SSiva Chandra Reddy 11419580c6SSiva Chandra Reddy #include "src/__support/OSUtil/syscall.h" // For internal syscall function. 12419580c6SSiva Chandra Reddy #include "src/__support/common.h" 13419580c6SSiva Chandra Reddy 14*abc49cc1SJob Henandez Lara #include "hdr/fcntl_macros.h" 155ff3ff33SPetr Hosek #include "src/__support/macros/config.h" 16803437dbSMichael Jones #include "src/errno/libc_errno.h" 17419580c6SSiva Chandra Reddy #include <sys/syscall.h> // For syscall numbers. 18419580c6SSiva Chandra Reddy 195ff3ff33SPetr Hosek namespace LIBC_NAMESPACE_DECL { 20419580c6SSiva Chandra Reddy 21419580c6SSiva Chandra Reddy LLVM_LIBC_FUNCTION(int, access, (const char *path, int mode)) { 22419580c6SSiva Chandra Reddy #ifdef SYS_access 23b6bc9d72SGuillaume Chatelet int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_access, path, mode); 24cae9c64fSSiva Chandra #elif defined(SYS_faccessat) 25f0a3954eSMichael Jones int ret = 26b6bc9d72SGuillaume Chatelet LIBC_NAMESPACE::syscall_impl<int>(SYS_faccessat, AT_FDCWD, path, mode, 0); 27419580c6SSiva Chandra Reddy #else 285b22df99SMikhail R. Gadelha #error "access and faccessat syscalls not available." 29419580c6SSiva Chandra Reddy #endif 30419580c6SSiva Chandra Reddy 31419580c6SSiva Chandra Reddy if (ret < 0) { 32204587a3SSiva Chandra Reddy libc_errno = -ret; 33419580c6SSiva Chandra Reddy return -1; 34419580c6SSiva Chandra Reddy } 35419580c6SSiva Chandra Reddy return 0; 36419580c6SSiva Chandra Reddy } 37419580c6SSiva Chandra Reddy 385ff3ff33SPetr Hosek } // namespace LIBC_NAMESPACE_DECL 39