diff options
Diffstat (limited to 'testcases/kernel/syscalls/mmap')
| -rw-r--r-- | testcases/kernel/syscalls/mmap/mmap04.c | 236 | ||||
| -rw-r--r-- | testcases/kernel/syscalls/mmap/mmap15.c | 123 |
2 files changed, 103 insertions, 256 deletions
diff --git a/testcases/kernel/syscalls/mmap/mmap04.c b/testcases/kernel/syscalls/mmap/mmap04.c index 43f7b7525..fa85deed1 100644 --- a/testcases/kernel/syscalls/mmap/mmap04.c +++ b/testcases/kernel/syscalls/mmap/mmap04.c @@ -1,185 +1,79 @@ +// 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/exec access - * under the following conditions - - * - The prot parameter is set to PROT_READ|PROT_EXEC - * - The file descriptor is open for read - * - The file being mapped has read and execute permission bit set. - * - The minimum file permissions should be 0555. - * - * The call should succeed to map the file creating mapped memory with the - * required attributes. - * - * Expected Result: - * mmap() should succeed returning the address of the mapped region, - * and the mapped region should contain the contents of the mapped file. +/*\ + * [Description] * - * HISTORY - * 07/2001 Ported by Wayne Boyer + * Verify that, after a successful mmap() call, permission bits of the new + * mapping in /proc/pid/maps file matches the prot and flags arguments in + * mmap() call. */ +#include <inttypes.h> +#include "tst_test.h" #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 = "mmap04"; -int TST_TOTAL = 1; - -static size_t page_sz; -static char *addr; -static char *dummy; -static int fildes; - -static void setup(void); -static void cleanup(void); - -int main(int ac, char **av) +static char *addr1; +static char *addr2; + +static struct tcase { + int prot; + int flags; + char *exp_perms; +} tcases[] = { + {PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE, "---p"}, + {PROT_NONE, MAP_ANONYMOUS | MAP_SHARED, "---s"}, + {PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, "r--p"}, + {PROT_READ, MAP_ANONYMOUS | MAP_SHARED, "r--s"}, + {PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, "-w-p"}, + {PROT_WRITE, MAP_ANONYMOUS | MAP_SHARED, "-w-s"}, + {PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, "rw-p"}, + {PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_SHARED, "rw-s"}, + {PROT_READ | PROT_EXEC, MAP_ANONYMOUS | MAP_PRIVATE, "r-xp"}, + {PROT_READ | PROT_EXEC, MAP_ANONYMOUS | MAP_SHARED, "r-xs"}, + {PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS | MAP_PRIVATE, "-wxp"}, + {PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS | MAP_SHARED, "-wxs"}, + {PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS | MAP_PRIVATE, "rwxp"}, + {PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS | MAP_SHARED, "rwxs"} +}; + +static void run(unsigned int i) { - 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 and execute access. - */ - errno = 0; - addr = mmap(0, page_sz, PROT_READ | PROT_EXEC, - 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 - * variable. - */ - if (read(fildes, dummy, page_sz) < 0) { - tst_brkm(TFAIL, cleanup, "reading %s failed", - TEMPFILE); - } - - /* - * Check whether the mapped memory region - * has the file contents. - */ - if (memcmp(dummy, addr, page_sz)) { - tst_resm(TFAIL, - "mapped memory region 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, cleanup, "munmapping failed"); - } + struct tcase *tc = &tcases[i]; + char perms[8]; + char fmt[1024]; + unsigned int pagesize; + int flag; + + pagesize = SAFE_SYSCONF(_SC_PAGESIZE); + + /* To avoid new mapping getting merged with existing mappings, we first + * create a 2-page mapping with the different permissions, and then remap + * the 2nd page with the perms being tested. + */ + flag = (tc->flags & MAP_PRIVATE) ? MAP_SHARED : MAP_PRIVATE; + addr1 = SAFE_MMAP(NULL, pagesize * 2, PROT_NONE, MAP_ANONYMOUS | flag, -1, 0); + + addr2 = SAFE_MMAP(addr1 + pagesize, pagesize, tc->prot, tc->flags | MAP_FIXED, -1, 0); + + sprintf(fmt, "%" PRIxPTR "-%%*x %%s", (uintptr_t)addr2); + SAFE_FILE_LINES_SCANF("/proc/self/maps", fmt, perms); + + if (!strcmp(perms, tc->exp_perms)) { + tst_res(TPASS, "mapping permissions in /proc matched: %s", perms); + } else { + tst_res(TFAIL, "mapping permissions in /proc mismatched, expected: %s, found: %s", + tc->exp_perms, perms); } - cleanup(); - tst_exit(); + SAFE_MUNMAP(addr1, pagesize * 2); } -static void setup(void) -{ - char *tst_buff; - - tst_sig(NOFORK, DEF_HANDLER, cleanup); - - TEST_PAUSE; - - page_sz = getpagesize(); - - 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); - - tst_tmpdir(); - - /* 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); - } - - /* 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 the memory allocated for test buffer */ - free(tst_buff); - - /* Make sure proper permissions set on file */ - if (fchmod(fildes, 0555) < 0) { - tst_brkm(TFAIL, cleanup, "fchmod of %s failed", TEMPFILE); - } - - /* Close the temporary file opened for write */ - if (close(fildes) < 0) { - tst_brkm(TFAIL, cleanup, "closing %s failed", TEMPFILE); - } - - /* 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)"); - } - - /* Open the temporary file again for reading */ - if ((fildes = open(TEMPFILE, O_RDONLY)) < 0) { - tst_brkm(TFAIL, cleanup, - "opening %s read-only failed", TEMPFILE); - } -} - -static void cleanup(void) -{ - close(fildes); - free(dummy); - tst_rmdir(); -} +static struct tst_test test = { + .test = run, + .tcnt = ARRAY_SIZE(tcases), +}; diff --git a/testcases/kernel/syscalls/mmap/mmap15.c b/testcases/kernel/syscalls/mmap/mmap15.c index 443a37eb8..71c18a10a 100644 --- a/testcases/kernel/syscalls/mmap/mmap15.c +++ b/testcases/kernel/syscalls/mmap/mmap15.c @@ -1,113 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) International Business Machines Corp., 2004 - * Written by Robbie Williamson - * - * 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 + * Written by Robbie Williamson + * Copyright (c) 2023 SUSE LLC Avinesh Kumar <avinesh.kumar@suse.com> + * Copyright (c) Linux Test Project, 2014-2023 */ -/* - * Test Description: Test that a normal page cannot be mapped into a high - * memory region. +/*\ + * [Description] + * + * Verify that, a normal page cannot be mapped into a high memory region, + * and mmap() call fails with either ENOMEM or EINVAL errno. */ -#include <sys/types.h> -#include <sys/mman.h> -#include <sys/mount.h> -#include <sys/stat.h> -#include <errno.h> -#include <fcntl.h> -#include <signal.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include "test.h" -#include "safe_macros.h" -#include "lapi/abisize.h" - -char *TCID = "mmap15"; -int TST_TOTAL = 1; +#include "tst_test.h" #ifdef __ia64__ -# define HIGH_ADDR (void *)(0xa000000000000000UL) +# define HIGH_ADDR ((void *)(0xa000000000000000UL)) #else -# define HIGH_ADDR (void *)(-page_size) +# define HIGH_ADDR ((void *)(-page_size)) #endif -static long page_size; +#define TEMPFILE "mmapfile" -static void setup(void); -static void cleanup(void); +static long page_size; +static int fd; -int main(int ac, char **av) +static void run(void) { - int lc, fd; - void *addr; - -#ifdef TST_ABI32 - tst_brkm(TCONF, NULL, "This test is only for 64bit"); -#endif + fd = SAFE_OPEN(TEMPFILE, O_RDWR | O_CREAT, 0666); - tst_parse_opts(ac, av, NULL, NULL); + TESTPTR(mmap(HIGH_ADDR, page_size, PROT_READ, MAP_SHARED | MAP_FIXED, fd, 0)); - setup(); - - for (lc = 0; TEST_LOOPING(lc); lc++) { - tst_count = 0; - - fd = SAFE_OPEN(cleanup, "testfile", O_RDWR | O_CREAT, 0666); - - /* Attempt to mmap into highmem addr, should get ENOMEM */ - addr = mmap(HIGH_ADDR, page_size, PROT_READ, - MAP_SHARED | MAP_FIXED, fd, 0); - if (addr != MAP_FAILED) { - tst_resm(TFAIL, "mmap into high region " - "succeeded unexpectedly"); - munmap(addr, page_size); - close(fd); - continue; - } - - if (errno != ENOMEM && errno != EINVAL) { - tst_resm(TFAIL | TERRNO, "mmap into high region " - "failed unexpectedly"); - } else { - tst_resm(TPASS | TERRNO, "mmap into high region " - "failed as expected"); - } - - SAFE_CLOSE(cleanup, fd); + if (TST_RET_PTR != MAP_FAILED) { + tst_res(TFAIL, "mmap() into high mem region succeeded unexpectedly"); + SAFE_MUNMAP(TST_RET_PTR, page_size); + return; } - cleanup(); - tst_exit(); + if (TST_ERR == ENOMEM || TST_ERR == EINVAL) + tst_res(TPASS | TERRNO, "mmap() failed with expected errno"); + else + tst_res(TFAIL | TERRNO, "mmap() failed with unexpected errno"); + + SAFE_CLOSE(fd); } static void setup(void) { - tst_require_root(); - - tst_tmpdir(); - page_size = getpagesize(); - - TEST_PAUSE; } static void cleanup(void) { - tst_rmdir(); + if (fd > 0) + SAFE_CLOSE(fd); } + +static struct tst_test test = { + .setup = setup, + .cleanup = cleanup, + .test_all = run, + .skip_in_compat = 1, + .needs_tmpdir = 1 +}; |