--- /dev/null
+/*
+ *
+ * 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
+ */
+
+/*
+ * Test Name: truncate02
+ *
+ * Test Description:
+ * Verify that, truncate(2) succeeds to truncate a file to a certain length,
+ * but the attempt to read past the truncated length will fail.
+ *
+ * Expected Result:
+ * truncate(2) should return a value 0 and the attempt to read past the
+ * truncated length will fail. In case where the file before truncation was
+ * shorter, the bytes between the old and new should be all zeroes.
+ *
+ * Algorithm:
+ * Setup:
+ * Setup signal handling.
+ * Create temporary directory.
+ * 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,
+ * Verify the Functionality of system call
+ * if successful,
+ * Issue Functionality-Pass message.
+ * Otherwise,
+ * Issue Functionality-Fail message.
+ * Cleanup:
+ * Print errno log and/or timing stats if options given
+ * Delete the temporary directory created.
+ *
+ * Usage: <for command-line>
+ * truncate02 [-c n] [-e] [-f] [-i n] [-I x] [-p x] [-t]
+ * where, -c n : Run n copies concurrently.
+ * -e : Turn on errno logging.
+ * -f : Turn off functionality Testing.
+ * -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 John George
+ * -Ported
+ *
+ * Restrictions:
+ * This test should be run by 'non-super-user' only.
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <signal.h>
+
+#include "test.h"
+#include "usctest.h"
+
+#define TESTFILE "testfile" /* file under test */
+#define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
+#define BUF_SIZE 256 /* buffer size */
+#define FILE_SIZE 1024 /* test file size */
+#define TRUNC_LEN1 256 /* truncation length */
+#define TRUNC_LEN2 512 /* truncation length */
+
+const char *TCID="truncate02"; /* Test program identifier. */
+int TST_TOTAL=1; /* Total number of test conditions */
+extern int Tst_count; /* Test Case counter for tst_* routines */
+int fd; /* file descriptor of testfile */
+char tst_buff[BUF_SIZE]; /* buffer to hold testfile contents */
+int exp_enos[]={0};
+
+void setup(); /* setup function for the test */
+void cleanup(void) __attribute__((noreturn)); /* cleanup function for the test */
+
+int
+main(int ac, char **av)
+{
+ struct stat stat_buf; /* stat(2) struct contents */
+ int lc, i; /* loop counter */
+ const char *msg; /* message returned from parse_opts */
+ off_t file_length2; /* test file length */
+ off_t file_length1; /* test file length */
+ int rbytes; /* bytes read from testfile */
+ int read_len = 0; /* total no. of bytes read from testfile */
+ int err_flag = 0; /* error indicator flag */
+
+ /* Parse standard options given to run the test. */
+ msg = parse_opts(ac, av, (option_t *) NULL, NULL);
+ if (msg != (char *) NULL) {
+ tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
+ tst_exit();
+ }
+
+ /* Perform global setup for test */
+ setup();
+
+ /* set the expected errnos... */
+ TEST_EXP_ENOS(exp_enos);
+
+ /* Check looping state if -i option given */
+ for (lc = 0; TEST_LOOPING(lc); lc++) {
+ /* Reset Tst_count in case we are looping. */
+ Tst_count = 0;
+
+ /*
+ * Call truncate(2) to truncate a test file to a
+ * specified length (TRUNC_LEN1).
+ */
+ TEST(truncate(TESTFILE, TRUNC_LEN1));
+
+ /* check return code of truncate(2) */
+ if (TEST_RETURN == -1) {
+ TEST_ERROR_LOG(TEST_ERRNO);
+ tst_resm(TFAIL, \
+ "truncate(%s, %d) Failed, errno=%d : %s",
+ TESTFILE, TRUNC_LEN1, TEST_ERRNO,
+ strerror(TEST_ERRNO));
+ } else {
+ /*
+ * Perform functional verification if test
+ * executed without (-f) option.
+ */
+ if (STD_FUNCTIONAL_TEST) {
+ /*
+ * Get the testfile information using
+ * stat(2).
+ */
+ if (stat(TESTFILE, &stat_buf) < 0) {
+ tst_brkm(TFAIL, cleanup, "stat(2) of "
+ "%s failed after 1st truncate, "
+ "error:%d", TESTFILE, errno);
+ /*NOTREACHED*/
+ }
+ file_length1 = stat_buf.st_size;
+
+ /*
+ * Set the file pointer of testfile to the
+ * beginning of the file.
+ */
+ if (lseek(fd, 0, SEEK_SET) < 0) {
+ tst_brkm(TFAIL, cleanup, "lseek(2) on "
+ "%s failed after 1st truncate, "
+ "error:%d", TESTFILE, errno);
+ /*NOTREACHED*/
+ }
+
+ /* Read the testfile from the beginning. */
+ while ((rbytes = read(fd, tst_buff, \
+ sizeof(tst_buff))) > 0) {
+ read_len += rbytes;
+ }
+
+ /*
+ * Execute truncate(2) again to truncate
+ * testfile to a size TRUNC_LEN2.
+ */
+ TEST(truncate(TESTFILE, TRUNC_LEN2));
+
+ /* check return code of truncate(2) */
+ if (TEST_RETURN == -1) {
+ TEST_ERROR_LOG(TEST_ERRNO);
+ tst_resm(TFAIL, "truncate of %s to "
+ "size %d Failed, errno=%d : %s",
+ TESTFILE, TRUNC_LEN2,
+ TEST_ERRNO,
+ strerror(TEST_ERRNO));
+ }
+
+ /*
+ * Get the testfile information using
+ * stat(2)
+ */
+ if (stat(TESTFILE, &stat_buf) < 0) {
+ tst_brkm(TFAIL, cleanup, "stat(2) of "
+ "%s failed after 2nd truncate, "
+ "error:%d", TESTFILE, errno);
+ /*NOTREACHED*/
+ }
+ file_length2 = stat_buf.st_size;
+
+ /*
+ * Set the file pointer of testfile to the
+ * offset TRUNC_LEN1 of testfile.
+ */
+ if (lseek(fd, TRUNC_LEN1, SEEK_SET) < 0) {
+ tst_brkm(TFAIL, cleanup, "lseek(2) on "
+ "%s failed after 2nd truncate, "
+ "error:%d", TESTFILE, errno);
+ /*NOTREACHED*/
+ }
+
+ /* Read the testfile contents till EOF */
+ while((rbytes = read(fd, tst_buff, \
+ sizeof(tst_buff))) > 0) {
+ for (i = 0; i < rbytes; i++) {
+ if (tst_buff[i] != 0) {
+ err_flag++;
+ }
+ }
+ }
+
+ /*
+ * Check for expected size of testfile after
+ * issuing truncate(2) on it.
+ */
+ if ((file_length1 != TRUNC_LEN1) || \
+ (file_length2 != TRUNC_LEN2) || \
+ (read_len != TRUNC_LEN1) || \
+ (err_flag != 0)) {
+ tst_resm(TFAIL, "Functionality of "
+ "truncate(2) on %s Failed",
+ TESTFILE);
+ } else {
+ tst_resm(TPASS, \
+ "Functionality of truncate(2) "
+ "on %s successful", TESTFILE);
+ }
+ } else {
+ tst_resm(TPASS, "%s call succeeded", TCID);
+ }
+ }
+ Tst_count++; /* incr. TEST_LOOP counter */
+ } /* End for TEST_LOOPING */
+
+ /* Call cleanup() to undo setup done for the test. */
+ cleanup();
+ /*NOTREACHED*/
+
+} /* End main */
+
+/*
+ * void
+ * setup() - performs all ONE TIME setup for this test.
+ * Create a temporary directory and change directory to it.
+ * Create a test file under temporary directory and write some
+ * data into it.
+ */
+void
+setup()
+{
+ int i; /* counter variable */
+ int wbytes; /* bytes written to testfile */
+ int write_len = 0; /* total no. of bytes written to testfile */
+
+ /* capture signals */
+ tst_sig(FORK, DEF_HANDLER, cleanup);
+
+ /* Pause if that option was specified
+ * TEST_PAUSE contains the code to fork the test with the -i option.
+ * You want to make sure you do this before you create your temporary
+ * directory.
+ */
+ TEST_PAUSE;
+
+ /* make a temp directory and cd to it */
+ tst_tmpdir();
+
+
+ /* Fill the test buffer with the known data */
+ for (i = 0; i < BUF_SIZE; i++) {
+ tst_buff[i] = 'a';
+ }
+
+ /* Creat a testfile and write some data into it */
+ if ((fd = open(TESTFILE, O_RDWR|O_CREAT, FILE_MODE)) == -1) {
+ tst_brkm(TBROK, cleanup,
+ "open(%s, O_RDWR|O_CREAT, %o) Failed, errno=%d : %s",
+ TESTFILE, FILE_MODE, errno, strerror(errno));
+ /*NOTREACHED*/
+ }
+
+ /* Write to the file 1k data from the buffer */
+ while (write_len < FILE_SIZE) {
+ if ((wbytes = write(fd, tst_buff, sizeof(tst_buff))) <= 0) {
+ tst_brkm(TBROK, cleanup,
+ "write(2) on %s Failed, errno=%d : %s",
+ TESTFILE, errno, strerror(errno));
+ } else {
+ write_len += wbytes;
+ }
+ }
+} /* End setup() */
+
+/*
+ * void
+ * cleanup() - performs all ONE TIME cleanup for this test at
+ * completion or premature exit.
+ * Close the temporary file opened for reading/writing.
+ * Remove the test directory and testfile created in the setup.
+ */
+void
+cleanup()
+{
+ /*
+ * print timing stats if that option was specified.
+ */
+ TEST_CLEANUP;
+
+ /* Close the testfile after writing data into it */
+ if (close(fd) == -1) {
+ tst_brkm(TFAIL, NULL,
+ "close(%s) Failed, errno=%d : %s",
+ TESTFILE, errno, strerror(errno));
+ }
+
+ /* Remove tmp dir and all files in it */
+ tst_rmdir();
+
+ /* exit with return code appropriate for results */
+ tst_exit();
+} /* End cleanup() */
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