105 lines
2.4 KiB
C
105 lines
2.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Internstional Business Machines Corp., 2006
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* Author: Yi Yang <yyangcdl@cn.ibm.com>
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* Copyright (c) Cyril Hrubis 2014 <chrubis@suse.cz>
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*/
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/*\
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* [Description]
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*
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* This test case will verify basic function of openat.
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*
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* - pathname is relative, then it is interpreted relative to the directory
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* referred to by the file descriptor dirfd
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*
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* - pathname is absolute, then dirfd is ignored
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*
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* - ENODIR pathname is a relative pathname and dirfd is a file
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* descriptor referring to a file other than a directory
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*
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* - EBADF dirfd is not a valid file descriptor
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*
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* - pathname is relative and dirfd is the special value AT_FDCWD, then pathname
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* is interpreted relative to the current working directory of the calling
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* process
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*/
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include "tst_test.h"
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#define TEST_FILE "test_file"
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#define TEST_DIR "test_dir/"
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static int dir_fd, fd;
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static int fd_invalid = 100;
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static int fd_atcwd = AT_FDCWD;
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static char glob_path[256];
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static struct test_case {
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int *dir_fd;
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const char *pathname;
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int exp_ret;
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int exp_errno;
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} test_cases[] = {
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{&dir_fd, TEST_FILE, 0, 0},
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{&dir_fd, glob_path, 0, 0},
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{&fd, TEST_FILE, -1, ENOTDIR},
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{&fd_invalid, TEST_FILE, -1, EBADF},
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{&fd_atcwd, TEST_DIR TEST_FILE, 0, 0}
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};
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static void verify_openat(unsigned int n)
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{
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struct test_case *tc = &test_cases[n];
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if (tc->exp_ret) {
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if (tc->exp_errno == ENOTDIR) {
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TST_EXP_FAIL2(openat(*tc->dir_fd, tc->pathname, O_RDWR, 0600),
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ENOTDIR, "openat with a filefd instead of dirfd");
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} else {
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TST_EXP_FAIL2(openat(*tc->dir_fd, tc->pathname, O_RDWR, 0600),
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EBADF, "openat with invalid fd");
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}
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} else {
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TST_EXP_FD(openat(*tc->dir_fd, tc->pathname, O_RDWR, 0600));
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}
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if (TST_RET > 0)
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SAFE_CLOSE(TST_RET);
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}
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static void setup(void)
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{
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char buf[PATH_MAX];
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SAFE_GETCWD(buf, PATH_MAX);
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SAFE_MKDIR(TEST_DIR, 0700);
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dir_fd = SAFE_OPEN(TEST_DIR, O_DIRECTORY);
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fd = SAFE_OPEN(TEST_DIR TEST_FILE, O_CREAT | O_RDWR, 0600);
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snprintf(glob_path, sizeof(glob_path), "%s/" TEST_DIR TEST_FILE, buf);
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}
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static void cleanup(void)
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{
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if (fd > 0)
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SAFE_CLOSE(fd);
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if (dir_fd > 0)
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SAFE_CLOSE(dir_fd);
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}
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static struct tst_test test = {
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.setup = setup,
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.cleanup = cleanup,
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.test = verify_openat,
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.tcnt = ARRAY_SIZE(test_cases),
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.needs_tmpdir = 1,
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};
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