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//===-- Linux implementation of chmod -------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/sys/stat/chmod.h"
#include "src/__support/OSUtil/syscall.h" // For internal syscall function.
#include "src/__support/common.h"
#include "hdr/fcntl_macros.h"
#include "hdr/types/mode_t.h"
#include "src/__support/libc_errno.h"
#include "src/__support/macros/config.h"
#include <sys/stat.h>
#include <sys/syscall.h> // For syscall numbers.
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(int, chmod, (const char *path, mode_t mode)) {
#ifdef SYS_chmod
int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_chmod, path, mode);
#elif defined(SYS_fchmodat)
int ret =
LIBC_NAMESPACE::syscall_impl<int>(SYS_fchmodat, AT_FDCWD, path, mode, 0);
#elif defined(SYS_fchmodat2)
int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_fchmodat2, AT_FDCWD, path,
mode, 0, AT_SYMLINK_NOFOLLOW);
#else
#error "chmod, fchmodat and fchmodat2 syscalls not available."
#endif
if (ret < 0) {
libc_errno = -ret;
return -1;
}
return 0;
}
} // namespace LIBC_NAMESPACE_DECL
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