1/* 2 * Copyright (c) International Business Machines Corp., 2001 3 * Copyright (c) 2015 Cyril Hrubis <chrubis@suse.cz> 4 * 5 * 07/2001 Ported by Wayne Boyer 6 * 04/2008 Roy Lee <roylee@andestech.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 16 * the GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software Foundation, 20 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23/* 24 * Attempt to execve(2) a file which is being opened by another process for 25 * writing fails with ETXTBSY. 26 */ 27 28#ifndef _GNU_SOURCE 29#define _GNU_SOURCE 30#endif 31#include <sys/types.h> 32#include <sys/wait.h> 33#include <errno.h> 34#include <fcntl.h> 35#include <libgen.h> 36#include <stdio.h> 37 38#include "test.h" 39#include "safe_macros.h" 40 41#define TEST_APP "execve_child" 42 43char *TCID = "execve04"; 44int TST_TOTAL = 1; 45 46static void setup(void); 47static void cleanup(void); 48static void do_child(void); 49 50int main(int ac, char **av) 51{ 52 int lc; 53 pid_t pid; 54 char *argv[2] = {TEST_APP, NULL}; 55 char *env[1] = {NULL}; 56 57 tst_parse_opts(ac, av, NULL, NULL); 58 59#ifdef UCLINUX 60 maybe_run_child(&do_child, ""); 61#endif 62 63 setup(); 64 65 for (lc = 0; TEST_LOOPING(lc); lc++) { 66 if ((pid = FORK_OR_VFORK()) == -1) { 67 tst_brkm(TBROK, cleanup, "fork failed"); 68 } else if (pid == 0) { 69#ifdef UCLINUX 70 if (self_exec(av[0], "") < 0) 71 tst_brkm(TBROK, cleanup, "self_exec failed"); 72#else 73 do_child(); 74#endif 75 } 76 77 TST_SAFE_CHECKPOINT_WAIT(cleanup, 0); 78 79 TEST(execve(TEST_APP, argv, env)); 80 81 if (TEST_ERRNO != ETXTBSY) 82 tst_resm(TFAIL | TTERRNO, "execve succeeded, expected failure"); 83 else 84 tst_resm(TPASS | TTERRNO, "execve failed as expected"); 85 86 TST_SAFE_CHECKPOINT_WAKE(cleanup, 0); 87 SAFE_WAIT(cleanup, NULL); 88 } 89 90 cleanup(); 91 tst_exit(); 92} 93 94void setup(void) 95{ 96 char path[PATH_MAX]; 97 98 if (tst_get_path(TEST_APP, path, sizeof(path))) { 99 tst_brkm(TBROK, NULL, 100 "Couldn't found "TEST_APP" binary in $PATH"); 101 } 102 103 tst_tmpdir(); 104 105 TST_CHECKPOINT_INIT(tst_rmdir); 106 107 SAFE_CP(tst_rmdir, path, "."); 108} 109 110static void cleanup(void) 111{ 112 tst_rmdir(); 113} 114 115static void do_child(void) 116{ 117 int fd; 118 119#ifdef UCLINUX 120 TST_CHECKPOINT_INIT(NULL); 121#endif 122 123 if ((fd = open(TEST_APP, O_WRONLY)) == -1) { 124 perror("open failed"); 125 exit(1); 126 } 127 128 TST_SAFE_CHECKPOINT_WAKE_AND_WAIT(NULL, 0); 129 130 exit(0); 131} 132