231 lines
6.1 KiB
C
231 lines
6.1 KiB
C
/*
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*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* Test Name : readlink01
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*
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* Test Description :
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* Verify that, readlink will succeed to read the contents of the symbolic
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* link created the process.
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*
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* Expected Result:
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* readlink() should return the contents of symbolic link path in the buffer
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* on success.
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*
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* Algorithm:
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* Setup:
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* Setup signal handling.
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* Create temporary directory.
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* Pause for SIGUSR1 if option specified.
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*
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* Test:
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* Loop if the proper options are given.
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* Execute system call
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* Check return code, if system call failed (return=-1)
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* Issue a FAIL message.
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* Otherwise,
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* Verify the Functionality of system call
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* if successful,
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* Issue Functionality-Pass message.
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* Otherwise,
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* Issue Functionality-Fail message.
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* Cleanup:
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* Print errno log and/or timing stats if options given
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* Delete the temporary directory created.
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*
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* Usage: <for command-line>
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* readlink01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
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* where, -c n : Run n copies concurrently.
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* -f : Turn off functionality Testing.
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* -i n : Execute test n times.
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* -I x : Execute test for x seconds.
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* -P x : Pause for x seconds between iterations.
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* -t : Turn on syscall timing.
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*
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* HISTORY
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* 07/2001 Ported by Wayne Boyer
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*
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* RESTRICTIONS:
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* This test should be run by 'non-super-user' only.
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*
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*/
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include "test.h"
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#include "usctest.h"
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#define TESTFILE "testfile"
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#define SYMFILE "slink_file"
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#define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
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#define MAX_SIZE 256
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char *TCID="readlink01"; /* Test program identifier. */
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int TST_TOTAL=1; /* Total number of test cases. */
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extern int Tst_count; /* Test Case counter for tst_* routines */
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int exp_val; /* strlen of testfile */
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void setup(); /* Setup function for the test */
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void cleanup(); /* Cleanup function for the test */
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int
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main(int ac, char **av)
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{
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char buffer[MAX_SIZE]; /* temporary buffer to hold symlink contents*/
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int lc; /* loop counter */
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const char *msg; /* message returned from parse_opts */
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/* Parse standard options given to run the test. */
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msg = parse_opts(ac, av, (option_t *)NULL, NULL);
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if (msg != (char *)NULL) {
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tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg);
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}
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/* Perform global setup for test */
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setup();
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/* Check looping state if -i option given */
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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/* Reset Tst_count in case we are looping. */
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Tst_count=0;
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/*
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* Call readlink(2) to read the contents of
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* symlink into a buffer.
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*/
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TEST(readlink(SYMFILE, buffer, sizeof(buffer)));
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/* Check return code of readlink(2) */
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if (TEST_RETURN == -1) {
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tst_resm(TFAIL, "readlink() on %s failed, errno=%d : %s"
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, SYMFILE, TEST_ERRNO, strerror(TEST_ERRNO));
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continue;
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}
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/*
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* Perform functional verification if test
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* executed without (-f) option.
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*/
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if (STD_FUNCTIONAL_TEST) {
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/*
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* Compare the return value of readlink()
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* with the expected value which is the
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* strlen() of testfile.
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*/
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if (TEST_RETURN == exp_val) {
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/* Check for the contents of buffer */
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if (memcmp(buffer, TESTFILE, exp_val) != 0) {
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tst_resm(TFAIL, "Pathname %s and buffer"
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" contents %s differ",
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TESTFILE, buffer);
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} else {
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tst_resm(TPASS, "readlink() "
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"functionality on '%s' is "
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"correct", SYMFILE);
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}
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} else {
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tst_resm(TFAIL, "readlink() return value %d "
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"does't match, Expected %d",
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TEST_RETURN, exp_val);
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}
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} else {
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tst_resm(TPASS, "call succeeded");
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}
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} /* End for TEST_LOOPING */
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/* Call cleanup() to undo setup done for the test. */
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cleanup();
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/*NOTREACHED*/
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} /* End main */
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/*
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* setup() - performs all ONE TIME setup for this test.
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*
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* Create a temporary directory and change directory to it.
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* Create a test file under temporary directory and close it
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* Create a symbolic link of testfile.
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*/
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void
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setup()
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{
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int fd; /* file handle for testfile */
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/* make sure test is not being run as root */
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if (0 == geteuid()) {
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tst_brkm(TBROK, tst_exit, "Must not run test as root");
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}
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/* capture signals */
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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/* Pause if that option was specified */
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TEST_PAUSE;
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/* make a temp directory and cd to it */
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tst_tmpdir();
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if ((fd = open(TESTFILE, O_RDWR|O_CREAT, FILE_MODE)) == -1) {
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tst_brkm(TBROK, cleanup,
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"open(%s, O_RDWR|O_CREAT, %#o) failed, errno=%d : %s",
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TESTFILE, FILE_MODE, errno, strerror(errno));
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}
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if (close(fd) == -1) {
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tst_resm(TWARN, "close(%s) Failed, errno=%d : %s",
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TESTFILE, errno, strerror(errno));
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}
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/* Create a symlink of testfile under temporary directory */
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if (symlink(TESTFILE, SYMFILE) < 0) {
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tst_brkm(TBROK, cleanup,
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"symlink(%s, %s) failed, errno=%d : %s",
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TESTFILE, SYMFILE, errno, strerror(errno));
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}
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/* Get the strlen of testfile */
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exp_val = strlen(TESTFILE);
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}
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/*
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* cleanup() - performs all ONE TIME cleanup for this test at
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* completion or premature exit.
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*
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* Remove the test directory and testfile created in the setup.
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*/
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void
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cleanup()
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{
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/*
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* print timing stats if that option was specified.
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* print errno log if that option was specified.
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*/
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TEST_CLEANUP;
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/* Remove tmp dir and all files in it */
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tst_rmdir();
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/* exit with return code appropriate for results */
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tst_exit();
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}
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