/* * * Copyright (c) Wipro Technologies, 2002. 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 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 * */ /********************************************************************* * TEST IDENTIFIER : sethostname01 * * EXECUTED BY : root / superuser * * TEST TITLE : Basic test for sethostname(2) * * TEST CASE TOTAL : 1 * * AUTHOR : Suresh Babu V. <suresh.babu@wipro.com> * * SIGNALS * Uses SIGUSR1 to pause before test if option set. * (See the parse_opts(3) man page). * * DESCRIPTION$ * This is a Phase I test for the sethostname(2) system call. * It is intended to provide a limited exposure of the system call. * * Setup: * Setup signal handling. * Save the current hostname. * Pause for SIGUSR1 if option specified. * * Test: * Loop if the proper options are given. * Execute system call * Check return code, if system call failed (return=-1) * Log the errno and Issue a FAIL message. * Otherwise, Issue a PASS message. * Cleanup: * Restore old host name. * Print errno log and/or timing stats if options given * * Usage: <for command-line> * sethostname01 [-c n] [-i n] [-I x] [-P x] [-p] [-t] [-h] * where, -c n : Run n copies concurrently. * -i n : Execute test n times. * -I x : Execute test for x seconds. * -p : Pause for SIGUSR1 before starting * -P x : Pause for x seconds between iterations. * -t : Turn on syscall timing. * -h : Display usage information * * ******************************************************************/ #include <string.h> #include <errno.h> #include <linux/utsname.h> #include "test.h" #define MAX_LENGTH __NEW_UTS_LEN static void setup(); static void cleanup(); char *TCID = "sethostname01"; int TST_TOTAL = 1; static char hname[MAX_LENGTH]; /* host name */ int main(int ac, char **av) { int lc; char ltphost[] = "ltphost"; /* temporary host name to set */ tst_parse_opts(ac, av, NULL, NULL); /* Do initial setup. */ setup(); /* check -c option for looping. */ for (lc = 0; TEST_LOOPING(lc); lc++) { tst_count = 0; /* Call sethostname(2) */ TEST(sethostname(ltphost, sizeof(ltphost))); /* check return code */ if (TEST_RETURN == -1) { tst_resm(TFAIL, "sethostname() failed , errno=%d : %s", TEST_ERRNO, strerror(TEST_ERRNO)); } else { tst_resm(TPASS, "sethostname() returned %ld," " Hostname set to \"%s\"", TEST_RETURN, ltphost); } } /* cleanup and exit */ cleanup(); tst_exit(); } /* * setup() - performs all one time setup for this test. */ void setup(void) { int ret; tst_require_root(); tst_sig(NOFORK, DEF_HANDLER, cleanup); /* Store the existing hostname to retain it before exiting */ if ((ret = gethostname(hname, sizeof(hname))) < 0) { tst_brkm(TBROK, NULL, "gethostname() failed while getting" " current host name"); } TEST_PAUSE; } /* * cleanup() - performs all one time cleanup for this test * completion or premature exit. */ void cleanup(void) { int ret; /* Set the host name back to original name */ if ((ret = sethostname(hname, strlen(hname))) < 0) { tst_resm(TWARN, "sethostname() failed while restoring" " hostname to \"%s\": %s", hname, strerror(errno)); } }