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/*
* Copyright (c) 2025 Interri Kft.
* All rights reserved.
*
* Free for personal use and commercial trial.
* Non-trial commercial use requires licenses available from https://firebuild.com.
* Modification and redistribution are permitted, but commercial use of derivative
* works is subject to the same requirements of this license
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* Test stat family syscalls: stat, lstat, fstat, fstatat, statx,
* and glibc-internal __xstat variants.
*/
#define _GNU_SOURCE
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#ifdef __linux__
/* For statx if available */
#ifndef STATX_TYPE
#include <linux/stat.h>
#endif
#endif
#define _STAT_VER 1
static void fail(const char *msg) {
perror(msg);
exit(1);
}
int main(void) {
struct stat st;
/* Create test files */
const char *regular = "test_stat_regular";
int fd = creat(regular, 0644);
if (fd == -1) fail("creat regular");
if (write(fd, "test", 4) != 4) fail("write");
close(fd);
const char *symlink_name = "test_stat_symlink";
if (symlink(regular, symlink_name) != 0) fail("symlink");
/* Test standard POSIX stat family */
if (stat(regular, &st) != 0) {
fail("stat");
}
if (!S_ISREG(st.st_mode)) {
fprintf(stderr, "stat: not regular\n");
exit(1);
}
if (st.st_size != 4) {
fprintf(stderr, "stat: size mismatch\n");
exit(1);
}
if (lstat(symlink_name, &st) != 0) {
fail("lstat");
}
if (!S_ISLNK(st.st_mode)) {
fprintf(stderr, "lstat: should return symlink\n");
exit(1);
}
fd = open(regular, O_RDONLY);
if (fd == -1) {
fail("open for fstat");
}
if (fstat(fd, &st) != 0) {
fail("fstat");
}
if (!S_ISREG(st.st_mode)) {
fprintf(stderr, "fstat: not regular\n");
exit(1);
}
close(fd);
if (fstatat(AT_FDCWD, regular, &st, 0) != 0) {
fail("fstatat");
}
if (!S_ISREG(st.st_mode)) {
fprintf(stderr, "fstatat: not regular\n");
exit(1);
}
if (fstatat(AT_FDCWD, symlink_name, &st, AT_SYMLINK_NOFOLLOW) != 0) {
fail("fstatat AT_SYMLINK_NOFOLLOW");
}
if (!S_ISLNK(st.st_mode)) {
fprintf(stderr, "fstatat AT_SYMLINK_NOFOLLOW: should be symlink\n");
exit(1);
}
#ifdef __x86_64__
/* Test 64-bit standard variants */
struct stat64 st64;
if (stat64(regular, &st64) != 0) {
fail("stat64");
}
if (!S_ISREG(st64.st_mode)) {
fprintf(stderr, "stat64: not regular\n");
exit(1);
}
if (lstat64(symlink_name, &st64) != 0) {
fail("lstat64");
}
if (!S_ISLNK(st64.st_mode)) {
fprintf(stderr, "lstat64: should be symlink\n");
exit(1);
}
fd = open(regular, O_RDONLY);
if (fd == -1) {
fail("open for fstat64");
}
if (fstat64(fd, &st64) != 0) {
fail("fstat64");
}
if (!S_ISREG(st64.st_mode)) {
fprintf(stderr, "fstat64: not regular\n");
exit(1);
}
close(fd);
if (fstatat64(AT_FDCWD, regular, &st64, 0) != 0) {
fail("fstatat64");
}
if (!S_ISREG(st64.st_mode)) {
fprintf(stderr, "fstatat64: not regular\n");
exit(1);
}
#endif
#ifdef STATX_TYPE
/* Test statx (Linux-specific, kernel 4.11+) */
struct statx stx;
if (statx(AT_FDCWD, regular, 0, STATX_BASIC_STATS, &stx) == 0) {
if (!S_ISREG(stx.stx_mode)) {
fprintf(stderr, "statx: not regular\n");
exit(1);
}
if (stx.stx_size != 4) {
fprintf(stderr, "statx: size mismatch\n");
exit(1);
}
} else if (errno != ENOSYS) {
fail("statx");
}
if (statx(AT_FDCWD, symlink_name, AT_SYMLINK_NOFOLLOW,
STATX_BASIC_STATS, &stx) == 0) {
if (!S_ISLNK(stx.stx_mode)) {
fprintf(stderr, "statx AT_SYMLINK_NOFOLLOW: should be symlink\n");
exit(1);
}
} else if (errno != ENOSYS) {
fail("statx AT_SYMLINK_NOFOLLOW");
}
#endif
/* Cleanup */
unlink(symlink_name);
unlink(regular);
printf("ok\n");
return 0;
}
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