diff options
Diffstat (limited to 'testcases/kernel/syscalls/mmap/mmap06.c')
| -rw-r--r-- | testcases/kernel/syscalls/mmap/mmap06.c | 176 |
1 files changed, 58 insertions, 118 deletions
diff --git a/testcases/kernel/syscalls/mmap/mmap06.c b/testcases/kernel/syscalls/mmap/mmap06.c index fb7c49257..615743fa7 100644 --- a/testcases/kernel/syscalls/mmap/mmap06.c +++ b/testcases/kernel/syscalls/mmap/mmap06.c @@ -1,143 +1,83 @@ +// 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() to map a file creating a mapped region with read access - * under the following conditions - - * - The prot parameter is set to PROT_READ - * - The file descriptor is open for writing. +/*\ + * [Description] * - * The call should fail to map the file. + * Verify that, mmap() call fails with errno: * - * Expected Result: - * mmap() should fail returning -1 and errno should get set to EACCES. - * - * HISTORY - * 07/2001 Ported by Wayne Boyer + * - EACCES, when a file mapping is requested but the file descriptor is not open for reading. + * - EINVAL, when length argument is 0. + * - EINVAL, when flags contains none of MAP_PRIVATE, MAP_SHARED, or MAP_SHARED_VALIDATE. */ -#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 = "mmap06"; -int TST_TOTAL = 1; +#include <stdlib.h> +#include "tst_test.h" +#define MMAPSIZE 1024 +#define TEMPFILE "mmapfile" static size_t page_sz; -static char *addr; -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); - TEST_ERRNO = errno; - - /* Check for the return value of mmap() */ - if (addr != MAP_FAILED) { - tst_resm(TFAIL | TERRNO, - "mmap() returned invalid value, expected: %p", - MAP_FAILED); - /* Unmap the mapped memory */ - if (munmap(addr, page_sz) != 0) { - tst_resm(TBROK, "munmap() failed"); - cleanup(); - } - continue; - } - if (TEST_ERRNO == EACCES) { - tst_resm(TPASS, "mmap failed with EACCES"); - } else { - tst_resm(TFAIL | TERRNO, - "mmap failed with unexpected errno"); - } - } - cleanup(); - tst_exit(); - -} +static int fd; + +static struct tcase { + size_t length; + int prot; + int flags; + int exp_errno; +} tcases[] = { + {MMAPSIZE, PROT_WRITE, MAP_FILE | MAP_PRIVATE, EACCES}, + {MMAPSIZE, PROT_WRITE, MAP_FILE | MAP_SHARED, EACCES}, + {MMAPSIZE, PROT_READ, MAP_FILE | MAP_PRIVATE, EACCES}, + {MMAPSIZE, PROT_READ, MAP_FILE | MAP_SHARED, EACCES}, + {MMAPSIZE, PROT_READ | PROT_WRITE, MAP_FILE | MAP_PRIVATE, EACCES}, + {MMAPSIZE, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, EACCES}, + {0, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, EINVAL}, + {MMAPSIZE, PROT_READ | PROT_WRITE, MAP_FILE, EINVAL} +}; static void setup(void) { - char *tst_buff; - - tst_sig(NOFORK, DEF_HANDLER, cleanup); - - TEST_PAUSE; + char *buf; 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)"); - } + fd = SAFE_OPEN(TEMPFILE, O_WRONLY | O_CREAT, 0666); + SAFE_WRITE(SAFE_WRITE_ALL, fd, buf, page_sz); + free(buf); +} - /* Fill the test buffer with the known data */ - memset(tst_buff, 'A', page_sz); +static void run(unsigned int i) +{ + struct tcase *tc = &tcases[i]; - tst_tmpdir(); + TESTPTR(mmap(NULL, tc->length, tc->prot, tc->flags, fd, 0)); - /* Creat a temporary file used for mapping */ - if ((fildes = open(TEMPFILE, O_WRONLY | O_CREAT, 0666)) < 0) { - free(tst_buff); - tst_brkm(TFAIL, cleanup, "opening %s failed", TEMPFILE); + if (TST_RET_PTR != MAP_FAILED) { + tst_res(TFAIL, "mmap() was successful unexpectedly"); + SAFE_MUNMAP(TST_RET_PTR, MMAPSIZE); + } else if (TST_ERR == tc->exp_errno) { + tst_res(TPASS | TERRNO, "mmap() failed with"); + } else { + tst_res(TFAIL | TERRNO, "mmap() failed unexpectedly"); } - - /* Write test buffer contents into temporary file */ - if (write(fildes, tst_buff, page_sz) < (ssize_t)page_sz) { - free(tst_buff); - tst_brkm(TFAIL, cleanup, "writing to %s failed", TEMPFILE); - } - - free(tst_buff); } static void cleanup(void) { - close(fildes); - tst_rmdir(); + if (fd > 0) + SAFE_CLOSE(fd); } + +static struct tst_test test = { + .setup = setup, + .cleanup = cleanup, + .test = run, + .tcnt = ARRAY_SIZE(tcases), + .needs_tmpdir = 1 +}; |