diff options
Diffstat (limited to 'winsup/testsuite/winsup.api/ltp/truncate02.c')
| -rw-r--r-- | winsup/testsuite/winsup.api/ltp/truncate02.c | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/winsup/testsuite/winsup.api/ltp/truncate02.c b/winsup/testsuite/winsup.api/ltp/truncate02.c new file mode 100644 index 000000000..b6e535cca --- /dev/null +++ b/winsup/testsuite/winsup.api/ltp/truncate02.c @@ -0,0 +1,335 @@ +/* + * + * 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 */ + +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(); /* 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() */ |