andrew/libakstdlib
1
0
Fork 0
Code Issues 33 Pull Requests 3 Actions 2 Packages Projects Releases Wiki Activity

Test file metadata failure paths
All checks were successful
libakstdlib CI Build / coverage (push) Successful in 2m51s
Details
libakstdlib CI Build / cmake_build (push) Successful in 2m59s
Details
libakstdlib CI Build / sanitizers (push) Successful in 3m4s
Details
libakstdlib CI Build / mutation_test (push) Successful in 12m14s
Details

Browse Source 
Co-authored-by: Andrew Kesterson <andrew@aklabs.net>
This commit is contained in:
Logikoma
2026-08-03 10:43:47 -04:00
parent 01034fc668
commit 15e9104d9e
3 changed files with 91 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
tests/test_stat.c
View File

@@ -2,6 +2,14 @@
#include "aksl_capture.h"
#include <errno.h>
#include <fcntl.h>
#include <string.h>
/*
* A bit libc has never assigned in the AT_ space. fstatat(2) must reject it
* with EINVAL rather than ignoring it, which is what proves flags reach libc
* unmasked. Re-check this constant if AT_ ever grows into 0x40000000.
*/
#define AKSL_TEST_AT_INVALID 0x40000000
static int test_stat_success_and_fstat(void)
{
@@ -30,6 +38,7 @@ static int test_stat_success_and_fstat(void)
/* A descriptor that was just closed must surface libc's EBADF. */
AKSL_CHECK_STATUS(aksl_fstat(fd, &fd_dest), EBADF);
AKSL_CHECK_STATUS(aksl_fstatvfs(fd, &vfs_dest), EBADF);
AKSL_CHECK(unlink(path) == 0);
return 0;
}
@@ -38,15 +47,21 @@ static int test_stat_paths_and_fstatat(void)
{
char path[AKSL_TMP_MAX];
char child[AKSL_TMP_MAX * 2];
char directory[AKSL_TMP_MAX];
char linkpath[AKSL_TMP_MAX * 2];
char *basename = NULL;
int dirfd = -1;
struct stat dest;
struct stat ldest;
struct stat path_dest;
struct statvfs vdest;
/* Missing paths and a regular file used as a directory preserve errno. */
AKSL_CHECK_STATUS(aksl_stat("/nonexistent/aksl/stat", &dest), ENOENT);
AKSL_CHECK_STATUS(aksl_lstat("/nonexistent/aksl/stat", &ldest), ENOENT);
/* The temporary path is a regular file, so adding a child tests ENOTDIR. */
AKSL_CHECK(aksl_temp_file(path, sizeof(path)) == 0);
AKSL_CHECK(snprintf(child, sizeof(child), "%s/child", path) < (int)sizeof(child));
AKSL_CHECK_OK(aksl_stat(path, &path_dest));
AKSL_CHECK_STATUS(aksl_stat(child, &dest), ENOTDIR);
AKSL_CHECK(snprintf(linkpath, sizeof(linkpath), "%s.link", path) < (int)sizeof(linkpath));
AKSL_CHECK(symlink(path, linkpath) == 0);
@@ -57,13 +72,27 @@ static int test_stat_paths_and_fstatat(void)
AKSL_CHECK(S_ISREG(dest.st_mode));
AKSL_CHECK(S_ISLNK(ldest.st_mode));
/* AT_FDCWD makes fstatat resolve this path from the current directory. */
AKSL_CHECK_OK(aksl_fstatat(AT_FDCWD, path, &dest, 0));
/* A real dirfd must resolve a relative name against that directory. */
AKSL_CHECK(snprintf(directory, sizeof(directory), "%s", path) < (int)sizeof(directory));
basename = strrchr(directory, '/');
AKSL_CHECK(basename != NULL);
*basename = '\0';
dirfd = open(directory, O_RDONLY | O_DIRECTORY);
AKSL_CHECK(dirfd >= 0);
AKSL_CHECK_OK(aksl_fstatat(dirfd, strrchr(path, '/') + 1, &dest, 0));
AKSL_CHECK(dest.st_ino == path_dest.st_ino);
AKSL_CHECK(close(dirfd) == 0);
/* A valid non-zero flag must reach libc, making this call an lstat. */
AKSL_CHECK_OK(aksl_fstatat(AT_FDCWD, linkpath, &dest, AT_SYMLINK_NOFOLLOW));
AKSL_CHECK(S_ISLNK(dest.st_mode));
/* Invalid flags must replace stale errno with the EINVAL libc reports. */
errno = E2BIG;
AKSL_CHECK_STATUS(aksl_fstatat(AT_FDCWD, path, &dest, 0x40000000), EINVAL);
AKSL_CHECK(errno == EINVAL);
AKSL_CHECK_STATUS(aksl_fstatat(AT_FDCWD, path, &dest, AKSL_TEST_AT_INVALID), EINVAL);
/* statvfs reports ENOENT before it can describe a missing filesystem path. */
AKSL_CHECK_STATUS(aksl_statvfs("/nonexistent/aksl/stat", &vdest), ENOENT);
/* statvfs reports the filesystem containing the current directory. */
AKSL_CHECK_OK(aksl_statvfs(".", &vdest));