| /* |
| * |
| * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * Test Name: pread02 |
| * |
| * Test Description: |
| * Verify that, |
| * 1) pread() fails when attempted to read from an unnamed pipe. |
| * 2) pread() fails if the specified offset position was invalid. |
| * |
| * Expected Result: |
| * 1) pread() should return -1 and set errno to ESPIPE. |
| * 2) pread() should return -1 and set errno to EINVAL. |
| * |
| * Algorithm: |
| * Setup: |
| * Setup signal handling. |
| * Create a 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) |
| * if errno set == expected errno |
| * Issue sys call fails with expected return value and errno. |
| * Otherwise, |
| * Issue sys call fails with unexpected errno. |
| * Otherwise, |
| * Issue sys call returns unexpected value. |
| * |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * Delete the temporary directory(s)/file(s) created. |
| * |
| * Usage: <for command-line> |
| * pread02 [-c n] [-e] [-i n] [-I x] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -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 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS: |
| * None. |
| */ |
| |
| #define _XOPEN_SOURCE 500 |
| |
| #include <errno.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #define TEMPFILE "pread_file" |
| #define K1 1024 |
| #define NBUFS 4 |
| |
| char *TCID = "pread02"; |
| int TST_TOTAL = 2; |
| |
| char *write_buf[NBUFS]; /* buffer to hold data to be written */ |
| char *read_buf[NBUFS]; /* buffer to hold data read from file */ |
| int pfd[2]; /* pair of file descriptors */ |
| int fd1; /* file descriptor of temporary file */ |
| |
| int exp_enos[] = { ESPIPE, EINVAL, 0 }; |
| |
| void setup(); /* Main setup function of test */ |
| void cleanup(); /* cleanup function for the test */ |
| int setup1(); /* setup function for test #1 */ |
| int setup2(); /* setup function for test #2 */ |
| int no_setup(); |
| void init_buffers(); /* function to initialize/allocate buffers */ |
| |
| struct test_case_t { /* test case struct. to hold ref. test cond's */ |
| int fd; |
| size_t nb; |
| off_t offst; |
| char *desc; |
| int exp_errno; |
| int (*setupfunc) (); |
| } Test_cases[] = { |
| { |
| 1, K1, 0, "file descriptor is a PIPE or FIFO", ESPIPE, setup1}, { |
| 2, K1, -1, "specified offset is -ve or invalid", EINVAL, setup2}, { |
| 0, 0, 0, NULL, 0, no_setup} |
| }; |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| char *msg; |
| int i; |
| int fildes; /* file descriptor of test file */ |
| size_t nbytes; /* no. of bytes to be written */ |
| off_t offset; /* offset position in the specified file */ |
| char *test_desc; /* test specific error message */ |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| TEST_EXP_ENOS(exp_enos); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| /* loop through the test cases */ |
| for (i = 0; Test_cases[i].desc != NULL; i++) { |
| fildes = Test_cases[i].fd; |
| test_desc = Test_cases[i].desc; |
| nbytes = Test_cases[i].nb; |
| offset = Test_cases[i].offst; |
| |
| if (fildes == 1) { |
| fildes = pfd[0]; |
| } else if (fildes == 2) { |
| fildes = fd1; |
| } |
| |
| /* |
| * Call pread() with the specified file descriptor, |
| * no. of bytes to be read from specified offset. |
| * and verify that call should fail with appropriate |
| * errno set. |
| */ |
| TEST(pread(fildes, read_buf[0], nbytes, offset)); |
| |
| /* Check for the return code of pread() */ |
| if (TEST_RETURN != -1) { |
| tst_brkm(TFAIL, cleanup, "pread() returned " |
| "%ld, expected -1, errno:%d", |
| TEST_RETURN, Test_cases[i].exp_errno); |
| } |
| |
| TEST_ERROR_LOG(TEST_ERRNO); |
| |
| /* |
| * Verify whether expected errno is set. |
| */ |
| if (TEST_ERRNO == Test_cases[i].exp_errno) { |
| tst_resm(TPASS, "pread() fails, %s, errno:%d", |
| test_desc, TEST_ERRNO); |
| } else { |
| tst_resm(TFAIL, "pread() fails, %s, unexpected " |
| "errno:%d, expected:%d", test_desc, |
| TEST_ERRNO, Test_cases[i].exp_errno); |
| } |
| } |
| } |
| |
| cleanup(); |
| |
| tst_exit(); |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test. |
| * Initialize/allocate write buffer. |
| * Call individual setup function. |
| */ |
| void setup() |
| { |
| int i; |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| /* Allocate/Initialize the read/write buffer with known data */ |
| init_buffers(); |
| |
| /* Call individual setup functions */ |
| for (i = 0; Test_cases[i].desc != NULL; i++) { |
| Test_cases[i].setupfunc(); |
| } |
| } |
| |
| /* |
| * no_setup() - This function simply returns. |
| */ |
| int no_setup() |
| { |
| return 0; |
| } |
| |
| /* |
| * setup1() - setup function for a test condition for which pread() |
| * returns -ve value and sets errno to ESPIPE. |
| * |
| * Create an unnamed pipe using pipe(). |
| * Write some known data to the write end of the pipe. |
| * return 0. |
| */ |
| int setup1() |
| { |
| /* Create a pair of unnamed pipe */ |
| if (pipe(pfd) < 0) { |
| tst_brkm(TBROK, cleanup, "pipe() failed to create pair of " |
| "pipe, error:%d", errno); |
| } |
| |
| /* Write known data (0's) of K1 bytes */ |
| if (write(pfd[1], write_buf[0], K1) != K1) { |
| tst_brkm(TBROK, cleanup, "write to pipe failed: errno=%d : %s", |
| errno, strerror(errno)); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * setup2 - setup function for a test condition for which pread() |
| * returns -ve value and sets errno to EINVAL. |
| * |
| * Create a temporary directory and a file under it. |
| * return 0. |
| */ |
| int setup2() |
| { |
| |
| tst_tmpdir(); |
| |
| /* Creat a temporary file used for mapping */ |
| if ((fd1 = open(TEMPFILE, O_RDWR | O_CREAT, 0666)) < 0) { |
| tst_brkm(TBROK, cleanup, "open() on %s Failed, errno=%d : %s", |
| TEMPFILE, errno, strerror(errno)); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * init_buffers() - allocate/Initialize write_buf array. |
| * |
| * Allocate read/write buffer. |
| * Fill the write buffer with the following data like, |
| * write_buf[0] has 0's, write_buf[1] has 1's, write_buf[2] has 2's |
| * write_buf[3] has 3's. |
| */ |
| void init_buffers() |
| { |
| int count; /* counter variable for loop */ |
| |
| /* Allocate and Initialize write buffer with known data */ |
| for (count = 0; count < NBUFS; count++) { |
| write_buf[count] = (char *)malloc(K1); |
| read_buf[count] = (char *)malloc(K1); |
| |
| if ((write_buf[count] == NULL) || (read_buf[count] == NULL)) { |
| tst_brkm(TBROK, NULL, |
| "malloc() failed on read/write buffers"); |
| } |
| memset(write_buf[count], count, K1); |
| } |
| } |
| |
| /* |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| * |
| * Deallocate the memory allocated to read/write buffers. |
| * Close the temporary file. |
| * Remove the temporary directory created. |
| */ |
| void cleanup() |
| { |
| int count; /* index for the loop */ |
| |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| /* Free the memory allocated for the read/write buffer */ |
| for (count = 0; count < NBUFS; count++) { |
| free(write_buf[count]); |
| free(read_buf[count]); |
| } |
| |
| /* Close the temporary file created in setup2 */ |
| if (close(fd1) < 0) { |
| tst_brkm(TBROK, NULL, "close() on %s Failed, errno=%d : %s", |
| TEMPFILE, errno, strerror(errno)); |
| } |
| |
| tst_rmdir(); |
| |
| } |