| /* |
| * |
| * 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; |
| const char *msg; |
| |
| char ltphost[] = "ltphost"; /* temporary host name to set */ |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| } |
| |
| /* 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(NULL); |
| |
| 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)); |
| } |
| |
| } |