| /* |
| * Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved. |
| * |
| * 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 would 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 the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| * Author: Alexey Kodanev <alexey.kodanev@oracle.com> |
| * |
| */ |
| |
| #include <errno.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/wait.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <signal.h> |
| #include "test.h" |
| |
| #define OPEN_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) |
| #define OPEN_FLAGS (O_WRONLY | O_APPEND | O_CREAT) |
| |
| int tst_cmd_fds_(void (cleanup_fn)(void), |
| const char *const argv[], |
| int stdout_fd, |
| int stderr_fd, |
| int pass_exit_val) |
| { |
| int rc; |
| |
| if (argv == NULL || argv[0] == NULL) { |
| tst_brkm(TBROK, cleanup_fn, |
| "argument list is empty at %s:%d", __FILE__, __LINE__); |
| return -1; |
| } |
| |
| /* |
| * The tst_sig() install poisoned signal handlers for all signals the |
| * test is not expected to get. |
| * |
| * So we temporarily disable the handler for sigchild we get after our |
| * child exits so that we don't have to disable it in each test that |
| * uses this interface. |
| */ |
| void *old_handler = signal(SIGCHLD, SIG_DFL); |
| |
| pid_t pid = vfork(); |
| if (pid == -1) { |
| tst_brkm(TBROK | TERRNO, cleanup_fn, "vfork failed at %s:%d", |
| __FILE__, __LINE__); |
| return -1; |
| } |
| if (!pid) { |
| /* redirecting stdout and stderr if needed */ |
| if (stdout_fd != -1) { |
| close(STDOUT_FILENO); |
| dup2(stdout_fd, STDOUT_FILENO); |
| } |
| |
| if (stderr_fd != -1) { |
| close(STDERR_FILENO); |
| dup2(stderr_fd, STDERR_FILENO); |
| } |
| |
| if (execvp(argv[0], (char *const *)argv)) { |
| if (errno == ENOENT) |
| _exit(255); |
| } |
| _exit(254); |
| } |
| |
| int ret = -1; |
| if (waitpid(pid, &ret, 0) != pid) { |
| tst_brkm(TBROK | TERRNO, cleanup_fn, "waitpid failed at %s:%d", |
| __FILE__, __LINE__); |
| return -1; |
| } |
| |
| signal(SIGCHLD, old_handler); |
| |
| if (!WIFEXITED(ret)) { |
| tst_brkm(TBROK, cleanup_fn, "failed to exec cmd '%s' at %s:%d", |
| argv[0], __FILE__, __LINE__); |
| return -1; |
| } |
| |
| rc = WEXITSTATUS(ret); |
| |
| if ((!pass_exit_val) && rc) { |
| tst_brkm(TBROK, cleanup_fn, |
| "'%s' exited with a non-zero code %d at %s:%d", |
| argv[0], rc, __FILE__, __LINE__); |
| return -1; |
| } |
| |
| return rc; |
| } |
| |
| int tst_cmd_(void (cleanup_fn)(void), |
| const char *const argv[], |
| const char *stdout_path, |
| const char *stderr_path, |
| int pass_exit_val) |
| { |
| int stdout_fd = -1; |
| int stderr_fd = -1; |
| int rc; |
| |
| if (stdout_path != NULL) { |
| stdout_fd = open(stdout_path, |
| OPEN_FLAGS, OPEN_MODE); |
| |
| if (stdout_fd == -1) |
| tst_resm(TWARN | TERRNO, |
| "open() on %s failed at %s:%d", |
| stdout_path, __FILE__, __LINE__); |
| } |
| |
| if (stderr_path != NULL) { |
| stderr_fd = open(stderr_path, |
| OPEN_FLAGS, OPEN_MODE); |
| |
| if (stderr_fd == -1) |
| tst_resm(TWARN | TERRNO, |
| "open() on %s failed at %s:%d", |
| stderr_path, __FILE__, __LINE__); |
| } |
| |
| rc = tst_cmd_fds(cleanup_fn, argv, stdout_fd, stderr_fd, |
| pass_exit_val); |
| |
| if ((stdout_fd != -1) && (close(stdout_fd) == -1)) |
| tst_resm(TWARN | TERRNO, |
| "close() on %s failed at %s:%d", |
| stdout_path, __FILE__, __LINE__); |
| |
| if ((stderr_fd != -1) && (close(stderr_fd) == -1)) |
| tst_resm(TWARN | TERRNO, |
| "close() on %s failed at %s:%d", |
| stderr_path, __FILE__, __LINE__); |
| |
| return rc; |
| } |
| |
| int tst_system(const char *command) |
| { |
| int ret = 0; |
| |
| /* |
| *Temporarily disable SIGCHLD of user defined handler, so the |
| *system(3) function will not cause unexpected SIGCHLD signal |
| *callback function for test cases. |
| */ |
| void *old_handler = signal(SIGCHLD, SIG_DFL); |
| |
| ret = system(command); |
| |
| signal(SIGCHLD, old_handler); |
| return ret; |
| } |