/* * * Copyright (c) International Business Machines Corp., 2001 * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* * NAME * chdir02.c * * DESCRIPTION * Testcase to test whether chdir(2) sets errno correctly. * * ALGORITHM * 1. Test for ENAMETOOLONG: * Create a bad directory name with length more than * * VFS_MAXNAMELEN (Linux kernel variable), and attempt to * chdir(2) to it. * * 2. Test for ENOENT: * Attempt to chdir(2) on a non-existent directory * * 3. Test for EFAULT: * Pass an address which lies outside the address space of the * process, and expect an EFAULT. * * USAGE: <for command-line> * chdir02 [-c n] [-e] [-i n] [-I x] [-P x] [-t] * where, -c n : Run n copies concurrently. * -e : Turn on errno logging. * -i n : Execute test n times. * -I x : Execute test for x seconds. * -P x : Pause for x seconds between iterations. * -t : Turn on syscall timing. * * HISTORY * 07/2001 Ported by Wayne Boyer * * RESTRICTIONS * NONE */ #include <errno.h> #include <sys/stat.h> #include <test.h> #include <usctest.h> const char *TCID = "chdir02"; int TST_TOTAL = 3; extern int Tst_count; int exp_enos[] = {ENAMETOOLONG, ENOENT, EFAULT, 0}; char bad_dir[] = "abcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyz"; char noexist_dir[] = "/tmp/noexistdir"; struct test_case_t { char *dname; int error; } TC[] = { /* * to test whether chdir() is setting ENAMETOOLONG if the * directory is more than VFS_MAXNAMELEN */ {bad_dir, ENAMETOOLONG}, /* * to test whether chdir() is setting ENOENT if the * directory is not existing. */ {noexist_dir, ENOENT}, /* * to test whether chdir() is setting EFAULT if the * directory is an invalid address. */ {(void *)-1, EFAULT} }; int flag; #define FAILED 1 void setup(void); void cleanup(void) __attribute__((noreturn)); int main(int ac, char **av) { int lc; /* loop counter */ int i; const char *msg; /* message returned from parse_opts */ /* parse standard options */ if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){ tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg); } setup(); /* set up the expected errnos */ TEST_EXP_ENOS(exp_enos); /* check looping state if -i option is given */ for (lc = 0; TEST_LOOPING(lc); lc++) { /* reset Tst_count in case we are looping */ Tst_count = 0; /* loop through the test cases */ for (i=0; i<TST_TOTAL; i++) { TEST(chdir(TC[i].dname)); if (TEST_RETURN != -1) { tst_resm(TFAIL, "call succeeded unexpectedly"); continue; } TEST_ERROR_LOG(TEST_ERRNO); if (TEST_ERRNO == TC[i].error) { tst_resm(TPASS, "expected failure - " "errno = %d : %s", TEST_ERRNO, strerror(TEST_ERRNO)); } else { tst_resm(TFAIL, "unexpected error - %d : %s - " "expected %d", TEST_ERRNO, strerror(TEST_ERRNO), TC[i].error); } } } cleanup(); /*NOTREACHED*/ } /* * setup() - performs all ONE TIME setup for this test. */ void setup() { /* capture signals */ tst_sig(NOFORK, DEF_HANDLER, cleanup); /* Pause if that option was specified */ TEST_PAUSE; /* make a temporary directory and cd to it */ tst_tmpdir(); } /* * cleanup() - performs all ONE TIME cleanup for this test at * completion or premature exit. */ void cleanup() { /* * print timing stats if that option was specified. * print errno log if that option was specified. */ TEST_CLEANUP; /* * Delete the test directory created in setup(). */ tst_rmdir(); /* exit with return code appropriate for results */ tst_exit(); }