diff options
Diffstat (limited to 'testcases/kernel/syscalls/setreuid/setreuid07.c')
| -rw-r--r-- | testcases/kernel/syscalls/setreuid/setreuid07.c | 196 |
1 files changed, 34 insertions, 162 deletions
diff --git a/testcases/kernel/syscalls/setreuid/setreuid07.c b/testcases/kernel/syscalls/setreuid/setreuid07.c index ff222cd00..5faf3cb7f 100644 --- a/testcases/kernel/syscalls/setreuid/setreuid07.c +++ b/testcases/kernel/syscalls/setreuid/setreuid07.c @@ -1,192 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0-later /* * Copyright (c) Kerlabs 2008. * Copyright (c) International Business Machines Corp., 2008 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * * Created by Renaud Lottiaux + * Copyright (c) 2023 SUSE LLC Avinesh Kumar <avinesh.kumar@suse.com> */ -/* +/*\ + * [Description] + * * Check if setreuid behaves correctly with file permissions. * The test creates a file as ROOT with permissions 0644, does a setreuid * and then tries to open the file with RDWR permissions. * The same test is done in a fork to check if new UIDs are correctly - * passed to the son. + * passed to the child process. */ -#include <errno.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/wait.h> -#include <fcntl.h> -#include <unistd.h> #include <pwd.h> +#include <stdlib.h> -#include "test.h" -#include "safe_macros.h" -#include "compat_16.h" +#include "tst_test.h" +#include "compat_tst_16.h" -TCID_DEFINE(setreuid07); -int TST_TOTAL = 1; +#define TEMPFILE "testfile" -static char testfile[256] = ""; static struct passwd *ltpuser; -static int fd = -1; - -static void setup(void); -static void cleanup(void); -static void do_master_child(void); - -int main(int ac, char **av) +static void setup(void) { - pid_t pid; + int fd; - tst_parse_opts(ac, av, NULL, NULL); + ltpuser = SAFE_GETPWNAM("nobody"); - setup(); - - pid = FORK_OR_VFORK(); - if (pid < 0) - tst_brkm(TBROK, cleanup, "Fork failed"); - - if (pid == 0) - do_master_child(); - - tst_record_childstatus(cleanup, pid); - - cleanup(); - tst_exit(); + UID16_CHECK(ltpuser->pw_uid, setreuid); + fd = SAFE_OPEN(TEMPFILE, O_CREAT | O_RDWR, 0644); + SAFE_CLOSE(fd); } -static void do_master_child(void) +static void run(void) { - int lc; - int pid; - int status; - - for (lc = 0; TEST_LOOPING(lc); lc++) { - int tst_fd; - - tst_count = 0; - - if (SETREUID(NULL, 0, ltpuser->pw_uid) == -1) { - perror("setreuid failed"); - exit(TFAIL); - } - - /* Test 1: Check the process with new uid cannot open the file - * with RDWR permissions. - */ - TEST(tst_fd = open(testfile, O_RDWR)); - - if (TEST_RETURN != -1) { - printf("open succeeded unexpectedly\n"); - close(tst_fd); - exit(TFAIL); - } - - if (TEST_ERRNO == EACCES) { - printf("open failed with EACCES as expected\n"); - } else { - perror("open failed unexpectedly"); - exit(TFAIL); - } - - /* Test 2: Check a son process cannot open the file - * with RDWR permissions. - */ - pid = FORK_OR_VFORK(); - if (pid < 0) - tst_brkm(TBROK, cleanup, "Fork failed"); - - if (pid == 0) { - int tst_fd2; - - /* Test to open the file in son process */ - TEST(tst_fd2 = open(testfile, O_RDWR)); - - if (TEST_RETURN != -1) { - printf("call succeeded unexpectedly\n"); - close(tst_fd2); - exit(TFAIL); - } - - if (TEST_ERRNO == EACCES) { - printf("open failed with EACCES as expected\n"); - exit(TPASS); - } else { - printf("open failed unexpectedly\n"); - exit(TFAIL); - } - } else { - /* Wait for son completion */ - if (waitpid(pid, &status, 0) == -1) { - perror("waitpid failed"); - exit(TFAIL); - } - if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) - exit(WEXITSTATUS(status)); - } - - /* Test 3: Fallback to initial uid and check we can again open - * the file with RDWR permissions. - */ - tst_count++; - if (SETREUID(NULL, 0, 0) == -1) { - perror("setreuid failed"); - exit(TFAIL); - } + pid_t pid; - TEST(tst_fd = open(testfile, O_RDWR)); + TST_EXP_PASS_SILENT(SETREUID(-1, ltpuser->pw_uid)); + TST_EXP_FAIL2(open(TEMPFILE, O_RDWR), EACCES); - if (TEST_RETURN == -1) { - perror("open failed unexpectedly"); - exit(TFAIL); - } else { - printf("open call succeeded\n"); - close(tst_fd); - } + pid = SAFE_FORK(); + if (pid == 0) { + TST_EXP_FAIL2(open(TEMPFILE, O_RDWR), EACCES); + exit(0); } - exit(TPASS); -} + tst_reap_children(); -static void setup(void) -{ - tst_require_root(); - - ltpuser = getpwnam("nobody"); - if (ltpuser == NULL) - tst_brkm(TBROK, NULL, "nobody must be a valid user."); - - tst_tmpdir(); - - sprintf(testfile, "setreuid07file%d.tst", getpid()); - - /* Create test file */ - fd = SAFE_OPEN(cleanup, testfile, O_CREAT | O_RDWR, 0644); - - tst_sig(FORK, DEF_HANDLER, cleanup); - - TEST_PAUSE; + TST_EXP_PASS_SILENT(SETREUID(-1, 0)); + TST_EXP_FD(open(TEMPFILE, O_RDWR)); + SAFE_CLOSE(TST_RET); } -static void cleanup(void) -{ - close(fd); - - tst_rmdir(); -} +static struct tst_test test = { + .setup = setup, + .test_all = run, + .needs_root = 1, + .forks_child = 1 +}; |