108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* Copyright (c) 2018 FUJITSU LIMITED. All rights reserved.
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* Authors: Jinhui huang <huangjh.jy@cn.fujitsu.com>
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*/
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/* Test Description:
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* Check various errnos for execveat(2):
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* 1) execveat() fails and returns EBADF if dirfd is a invalid file
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* descriptor.
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* 2) execveat() fails and returns EINVAL if flag specified is invalid.
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* 3) execveat() fails and returns ELOOP if the file identified by dirfd and
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* pathname is a symbolic link and flag includes AT_SYMLINK_NOFOLLOW.
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* 4) execveat() fails and returns ENOTDIR if pathname is relative and dirfd
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* is a file descriptor referring to a file other than a directory.
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*/
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#define _GNU_SOURCE
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#include "config.h"
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#include <stdio.h>
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#include <errno.h>
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#include "tst_test.h"
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#include "lapi/execveat.h"
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#include "lapi/fcntl.h"
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#include "execveat.h"
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#define TESTDIR "testdir"
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#define TEST_APP "execveat_errno"
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#define TEST_SYMLINK "execveat_symlink"
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#define TEST_REL_APP TESTDIR"/"TEST_APP
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#define TEST_ERL_SYMLINK TESTDIR"/"TEST_SYMLINK
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static int bad_fd = -1, fd;
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static char app_abs_path[512], app_sym_path[512];
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static struct tcase {
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int *fd;
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char *pathname;
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int flag;
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int exp_err;
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} tcases[] = {
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{&bad_fd, "", AT_EMPTY_PATH, EBADF},
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{&fd, app_abs_path, -1, EINVAL},
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{&fd, app_sym_path, AT_SYMLINK_NOFOLLOW, ELOOP},
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{&fd, TEST_REL_APP, 0, ENOTDIR},
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};
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static void verify_execveat(unsigned int i)
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{
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struct tcase *tc = &tcases[i];
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char *argv[2] = {TEST_APP, NULL};
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pid_t pid;
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pid = SAFE_FORK();
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if (pid == 0) {
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TEST(execveat(*tc->fd, tc->pathname, argv, environ, tc->flag));
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if (tc->exp_err != TST_ERR) {
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tst_res(TFAIL | TTERRNO,
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"execveat() fails unexpectedly, expected: %s",
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tst_strerrno(tc->exp_err));
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} else {
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tst_res(TPASS | TTERRNO,
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"execveat() fails as expected");
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}
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}
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}
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static void setup(void)
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{
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char cur_dir_path[512];
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check_execveat();
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SAFE_MKDIR(TESTDIR, 0777);
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SAFE_CP(TEST_APP, TEST_REL_APP);
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SAFE_GETCWD(cur_dir_path, sizeof(cur_dir_path));
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sprintf(app_abs_path, "%s/%s", cur_dir_path, TEST_REL_APP);
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sprintf(app_sym_path, "%s/%s", cur_dir_path, TEST_ERL_SYMLINK);
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SAFE_SYMLINK(TEST_REL_APP, TEST_ERL_SYMLINK);
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fd = SAFE_OPEN(TEST_REL_APP, O_PATH);
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}
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static const char *const resource_files[] = {
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TEST_APP,
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NULL,
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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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}
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static struct tst_test test = {
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.resource_files = resource_files,
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.tcnt = ARRAY_SIZE(tcases),
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.test = verify_execveat,
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.child_needs_reinit = 1,
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.forks_child = 1,
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.cleanup = cleanup,
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.setup = setup,
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};
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