diff options
Diffstat (limited to 'testcases/kernel/syscalls/mmap/mmap02.c')
| -rw-r--r-- | testcases/kernel/syscalls/mmap/mmap02.c | 204 |
1 files changed, 41 insertions, 163 deletions
diff --git a/testcases/kernel/syscalls/mmap/mmap02.c b/testcases/kernel/syscalls/mmap/mmap02.c index 566cc323a..7ffe61fa3 100644 --- a/testcases/kernel/syscalls/mmap/mmap02.c +++ b/testcases/kernel/syscalls/mmap/mmap02.c @@ -1,186 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * 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 + * 07/2001 Ported by Wayne Boyer + * Copyright (c) 2023 SUSE LLC Avinesh Kumar <avinesh.kumar@suse.com> */ -/* - * Test Description: - * Call mmap() with prot parameter set to PROT_READ and with the file - * descriptor being open for read, to map a file creating mapped memory - * with read access. The minimum file permissions should be 0444. - * - * The call should succeed to create the mapped region with required - * attributes. +/*\ + * [Description] * - * Expected Result: - * mmap() should succeed returning the address of the mapped region, - * the mapped region should contain the contents of the mapped file. - * - * HISTORY - * 07/2001 Ported by Wayne Boyer + * Verify that, mmap() call with PROT_READ and a file descriptor which is + * open for read only, succeeds to map a file creating mapped memory with + * read access. */ -#include <stdio.h> -#include <stdlib.h> -#include <sys/types.h> -#include <errno.h> -#include <unistd.h> -#include <fcntl.h> -#include <string.h> -#include <signal.h> -#include <sys/stat.h> -#include <sys/mman.h> - -#include "test.h" -#define TEMPFILE "mmapfile" - -char *TCID = "mmap02"; -int TST_TOTAL = 1; +#include <stdlib.h> +#include "tst_test.h" +#define TEMPFILE "mmapfile" +static ssize_t page_sz; +static int fd; static char *addr; -static char *dummy; -static size_t page_sz; -static int fildes; - -static void setup(void); -static void cleanup(void); - -int main(int ac, char **av) -{ - int lc; - - tst_parse_opts(ac, av, NULL, NULL); - - setup(); - - for (lc = 0; TEST_LOOPING(lc); lc++) { - - tst_count = 0; - - /* - * Call mmap to map the temporary file 'TEMPFILE' - * with read access. - */ - errno = 0; - addr = mmap(0, page_sz, PROT_READ, - MAP_FILE | MAP_SHARED, fildes, 0); - - /* Check for the return value of mmap() */ - if (addr == MAP_FAILED) { - tst_resm(TFAIL | TERRNO, "mmap of %s failed", TEMPFILE); - continue; - } - - /* - * Read the file contents into the dummy - * string. - */ - if (read(fildes, dummy, page_sz) < 0) { - tst_brkm(TFAIL | TERRNO, cleanup, - "reading %s failed", TEMPFILE); - } - - /* - * Check whether mapped memory region has - * the file contents. - */ - if (memcmp(dummy, addr, page_sz)) { - tst_resm(TFAIL, "mapped memory area contains " - "invalid data"); - } else { - tst_resm(TPASS, - "Functionality of mmap() successful"); - } - - /* Clean up things in case we are looping */ - /* Unmap the mapped memory */ - if (munmap(addr, page_sz) != 0) { - tst_brkm(TFAIL | TERRNO, cleanup, "munmapping failed"); - } - } - - cleanup(); - tst_exit(); -} +static char *buf; static void setup(void) { - char *tst_buff; - - tst_sig(FORK, DEF_HANDLER, cleanup); - - TEST_PAUSE; - page_sz = getpagesize(); + buf = SAFE_MALLOC(page_sz); + memset(buf, 'A', page_sz); - /* Allocate space for the test buffer */ - if ((tst_buff = calloc(page_sz, sizeof(char))) == NULL) { - tst_brkm(TFAIL, NULL, "calloc failed (tst_buff)"); - } - - /* Fill the test buffer with the known data */ - memset(tst_buff, 'A', page_sz); + fd = SAFE_OPEN(TEMPFILE, O_RDWR | O_CREAT, 0666); + SAFE_WRITE(SAFE_WRITE_ALL, fd, buf, page_sz); - tst_tmpdir(); - - /* Creat a temporary file used for mapping */ - if ((fildes = open(TEMPFILE, O_RDWR | O_CREAT, 0666)) < 0) { - free(tst_buff); - tst_brkm(TFAIL | TERRNO, cleanup, "opening %s failed", - TEMPFILE); - } - - /* Write test buffer contents into temporary file */ - if (write(fildes, tst_buff, page_sz) < (int)page_sz) { - free(tst_buff); - tst_brkm(TFAIL | TERRNO, cleanup, - "writing to %s failed", TEMPFILE); - } - - /* Free the memory allocated for test buffer */ - free(tst_buff); - - /* Change Mode permissions on Temporary file */ - if (fchmod(fildes, 0444) < 0) { - tst_brkm(TFAIL | TERRNO, cleanup, "fchmod(%s, 0444) failed", - TEMPFILE); - } - - /* Close the temporary file */ - if (close(fildes) < 0) { - tst_brkm(TFAIL | TERRNO, cleanup, "closing %s failed", - TEMPFILE); - } + SAFE_FCHMOD(fd, 0444); + SAFE_CLOSE(fd); + fd = SAFE_OPEN(TEMPFILE, O_RDONLY); +} - /* Open the temporary file again, - Readonly mode */ - if ((fildes = open(TEMPFILE, O_RDONLY)) < 0) { - tst_brkm(TFAIL, cleanup, "reopening %s readonly failed", - TEMPFILE); - } +static void run(void) +{ + addr = SAFE_MMAP(NULL, page_sz, PROT_READ, MAP_FILE | MAP_SHARED, fd, 0); - /* Allocate and initialize dummy string of system page size bytes */ - if ((dummy = calloc(page_sz, sizeof(char))) == NULL) { - tst_brkm(TFAIL, cleanup, "calloc failed (dummy)"); - } + if (memcmp(buf, addr, page_sz) == 0) + tst_res(TPASS, "mmap() functionality successful"); + else + tst_res(TFAIL, "mapped memory area contains invalid data"); + SAFE_MUNMAP(addr, page_sz); } static void cleanup(void) { - close(fildes); - free(dummy); - tst_rmdir(); + if (fd > 0) + SAFE_CLOSE(fd); + + free(buf); } + +static struct tst_test test = { + .setup = setup, + .cleanup = cleanup, + .test_all = run, + .needs_tmpdir = 1 +}; |