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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <syscall.h>
#include <unistd.h>
extern "C" {
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/umask.html
mode_t umask(mode_t mask)
{
return syscall(SC_umask, mask);
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/mkdir.html
int mkdir(char const* pathname, mode_t mode)
{
if (!pathname) {
errno = EFAULT;
return -1;
}
int rc = syscall(SC_mkdir, pathname, strlen(pathname), mode);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/chmod.html
int chmod(char const* pathname, mode_t mode)
{
return fchmodat(AT_FDCWD, pathname, mode, 0);
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/fchmodat.html
int fchmodat(int dirfd, char const* pathname, mode_t mode, int flags)
{
if (!pathname) {
errno = EFAULT;
return -1;
}
if (flags & ~AT_SYMLINK_NOFOLLOW) {
errno = EINVAL;
return -1;
}
Syscall::SC_chmod_params params {
dirfd,
{ pathname, strlen(pathname) },
mode,
!(flags & AT_SYMLINK_NOFOLLOW)
};
int rc = syscall(SC_chmod, ¶ms);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/fchmod.html
int fchmod(int fd, mode_t mode)
{
int rc = syscall(SC_fchmod, fd, mode);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/mkfifo.html
int mkfifo(char const* pathname, mode_t mode)
{
return mknod(pathname, mode | S_IFIFO, 0);
}
static int do_stat(int dirfd, char const* path, struct stat* statbuf, bool follow_symlinks)
{
if (!path) {
errno = EFAULT;
return -1;
}
Syscall::SC_stat_params params { { path, strlen(path) }, statbuf, dirfd, follow_symlinks };
int rc = syscall(SC_stat, ¶ms);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/lstat.html
int lstat(char const* path, struct stat* statbuf)
{
return do_stat(AT_FDCWD, path, statbuf, false);
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/stat.html
int stat(char const* path, struct stat* statbuf)
{
return do_stat(AT_FDCWD, path, statbuf, true);
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/fstat.html
int fstat(int fd, struct stat* statbuf)
{
int rc = syscall(SC_fstat, fd, statbuf);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/fstatat.html
int fstatat(int fd, char const* path, struct stat* statbuf, int flags)
{
return do_stat(fd, path, statbuf, !(flags & AT_SYMLINK_NOFOLLOW));
}
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/futimens.html
int futimens(int fd, struct timespec const times[2])
{
return utimensat(fd, "", times, 0);
}
}
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