diff options
Diffstat (limited to 'tests/sys/posixshm/posixshm.c')
-rw-r--r-- | tests/sys/posixshm/posixshm.c | 627 |
1 files changed, 0 insertions, 627 deletions
diff --git a/tests/sys/posixshm/posixshm.c b/tests/sys/posixshm/posixshm.c deleted file mode 100644 index 6f4c306..0000000 --- a/tests/sys/posixshm/posixshm.c +++ /dev/null @@ -1,627 +0,0 @@ -/*- - * Copyright (c) 2006 Robert N. M. Watson - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/mman.h> -#include <sys/resource.h> -#include <sys/stat.h> -#include <sys/syscall.h> -#include <sys/wait.h> - -#include <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#include "test.h" - -#define TEST_PATH "/tmp/posixshm_regression_test" - -/* - * Attempt a shm_open() that should fail with an expected error of 'error'. - */ -static void -shm_open_should_fail(const char *path, int flags, mode_t mode, int error) -{ - int fd; - - fd = shm_open(path, flags, mode); - if (fd >= 0) { - fail_err("shm_open() didn't fail"); - close(fd); - return; - } - if (errno != error) { - fail_errno("shm_open"); - return; - } - pass(); -} - -/* - * Attempt a shm_unlink() that should fail with an expected error of 'error'. - */ -static void -shm_unlink_should_fail(const char *path, int error) -{ - - if (shm_unlink(path) >= 0) { - fail_err("shm_unlink() didn't fail"); - return; - } - if (errno != error) { - fail_errno("shm_unlink"); - return; - } - pass(); -} - -/* - * Open the test object and write '1' to the first byte. Returns valid fd - * on success and -1 on failure. - */ -static int -scribble_object(void) -{ - char *page; - int fd; - - fd = shm_open(TEST_PATH, O_CREAT | O_EXCL | O_RDWR, 0777); - if (fd < 0 && errno == EEXIST) { - if (shm_unlink(TEST_PATH) < 0) { - fail_errno("shm_unlink"); - return (-1); - } - fd = shm_open(TEST_PATH, O_CREAT | O_EXCL | O_RDWR, 0777); - } - if (fd < 0) { - fail_errno("shm_open"); - return (-1); - } - if (ftruncate(fd, getpagesize()) < 0) { - fail_errno("ftruncate"); - close(fd); - shm_unlink(TEST_PATH); - return (-1); - } - - page = mmap(0, getpagesize(), PROT_READ | PROT_WRITE, MAP_SHARED, fd, - 0); - if (page == MAP_FAILED) { - fail_errno("mmap"); - close(fd); - shm_unlink(TEST_PATH); - return (-1); - } - - page[0] = '1'; - - if (munmap(page, getpagesize()) < 0) { - fail_errno("munmap"); - close(fd); - shm_unlink(TEST_PATH); - return (-1); - } - - return (fd); -} - -static void -remap_object(void) -{ - char *page; - int fd; - - fd = scribble_object(); - if (fd < 0) - return; - - page = mmap(0, getpagesize(), PROT_READ | PROT_WRITE, MAP_SHARED, fd, - 0); - if (page == MAP_FAILED) { - fail_errno("mmap(2)"); - close(fd); - shm_unlink(TEST_PATH); - return; - } - - if (page[0] != '1') { - fail_err("missing data"); - close(fd); - shm_unlink(TEST_PATH); - return; - } - - close(fd); - if (munmap(page, getpagesize()) < 0) { - fail_errno("munmap"); - shm_unlink(TEST_PATH); - return; - } - - if (shm_unlink(TEST_PATH) < 0) { - fail_errno("shm_unlink"); - return; - } - - pass(); -} -TEST(remap_object, "remap object"); - -static void -reopen_object(void) -{ - char *page; - int fd; - - fd = scribble_object(); - if (fd < 0) - return; - close(fd); - - fd = shm_open(TEST_PATH, O_RDONLY, 0777); - if (fd < 0) { - fail_errno("shm_open(2)"); - shm_unlink(TEST_PATH); - return; - } - page = mmap(0, getpagesize(), PROT_READ, MAP_SHARED, fd, 0); - if (page == MAP_FAILED) { - fail_errno("mmap(2)"); - close(fd); - shm_unlink(TEST_PATH); - return; - } - - if (page[0] != '1') { - fail_err("missing data"); - munmap(page, getpagesize()); - close(fd); - shm_unlink(TEST_PATH); - return; - } - - munmap(page, getpagesize()); - close(fd); - shm_unlink(TEST_PATH); - pass(); -} -TEST(reopen_object, "reopen object"); - -static void -readonly_mmap_write(void) -{ - char *page; - int fd; - - fd = shm_open(TEST_PATH, O_RDONLY | O_CREAT, 0777); - if (fd < 0) { - fail_errno("shm_open"); - return; - } - - /* PROT_WRITE should fail with EACCES. */ - page = mmap(0, getpagesize(), PROT_READ | PROT_WRITE, MAP_SHARED, fd, - 0); - if (page != MAP_FAILED) { - fail_err("mmap(PROT_WRITE) succeeded"); - munmap(page, getpagesize()); - close(fd); - shm_unlink(TEST_PATH); - return; - } - if (errno != EACCES) { - fail_errno("mmap"); - close(fd); - shm_unlink(TEST_PATH); - return; - } - - close(fd); - shm_unlink(TEST_PATH); - pass(); -} -TEST(readonly_mmap_write, "RDONLY object"); - -static void -open_after_unlink(void) -{ - int fd; - - fd = shm_open(TEST_PATH, O_RDONLY | O_CREAT, 0777); - if (fd < 0) { - fail_errno("shm_open(1)"); - return; - } - close(fd); - - if (shm_unlink(TEST_PATH) < 0) { - fail_errno("shm_unlink"); - return; - } - - shm_open_should_fail(TEST_PATH, O_RDONLY, 0777, ENOENT); -} -TEST(open_after_unlink, "open after unlink"); - -static void -open_invalid_path(void) -{ - - shm_open_should_fail("blah", O_RDONLY, 0777, EINVAL); -} -TEST(open_invalid_path, "open invalid path"); - -static void -open_write_only(void) -{ - - shm_open_should_fail(TEST_PATH, O_WRONLY, 0777, EINVAL); -} -TEST(open_write_only, "open with O_WRONLY"); - -static void -open_extra_flags(void) -{ - - shm_open_should_fail(TEST_PATH, O_RDONLY | O_DIRECT, 0777, EINVAL); -} -TEST(open_extra_flags, "open with extra flags"); - -static void -open_anon(void) -{ - int fd; - - fd = shm_open(SHM_ANON, O_RDWR, 0777); - if (fd < 0) { - fail_errno("shm_open"); - return; - } - close(fd); - pass(); -} -TEST(open_anon, "open anonymous object"); - -static void -open_anon_readonly(void) -{ - - shm_open_should_fail(SHM_ANON, O_RDONLY, 0777, EINVAL); -} -TEST(open_anon_readonly, "open SHM_ANON with O_RDONLY"); - -static void -open_bad_path_pointer(void) -{ - - shm_open_should_fail((char *)1024, O_RDONLY, 0777, EFAULT); -} -TEST(open_bad_path_pointer, "open bad path pointer"); - -static void -open_path_too_long(void) -{ - char *page; - - page = malloc(MAXPATHLEN + 1); - memset(page, 'a', MAXPATHLEN); - page[MAXPATHLEN] = '\0'; - shm_open_should_fail(page, O_RDONLY, 0777, ENAMETOOLONG); - free(page); -} -TEST(open_path_too_long, "open pathname too long"); - -static void -open_nonexisting_object(void) -{ - - shm_open_should_fail("/notreallythere", O_RDONLY, 0777, ENOENT); -} -TEST(open_nonexisting_object, "open nonexistent object"); - -static void -exclusive_create_existing_object(void) -{ - int fd; - - fd = shm_open("/tmp/notreallythere", O_RDONLY | O_CREAT, 0777); - if (fd < 0) { - fail_errno("shm_open(O_CREAT)"); - return; - } - close(fd); - - shm_open_should_fail("/tmp/notreallythere", O_RDONLY | O_CREAT | O_EXCL, - 0777, EEXIST); - - shm_unlink("/tmp/notreallythere"); -} -TEST(exclusive_create_existing_object, "O_EXCL of existing object"); - -static void -trunc_resets_object(void) -{ - struct stat sb; - int fd; - - /* Create object and set size to 1024. */ - fd = shm_open(TEST_PATH, O_RDWR | O_CREAT, 0777); - if (fd < 0) { - fail_errno("shm_open(1)"); - return; - } - if (ftruncate(fd, 1024) < 0) { - fail_errno("ftruncate"); - close(fd); - return; - } - if (fstat(fd, &sb) < 0) { - fail_errno("fstat(1)"); - close(fd); - return; - } - if (sb.st_size != 1024) { - fail_err("size %d != 1024", (int)sb.st_size); - close(fd); - return; - } - close(fd); - - /* Open with O_TRUNC which should reset size to 0. */ - fd = shm_open(TEST_PATH, O_RDWR | O_TRUNC, 0777); - if (fd < 0) { - fail_errno("shm_open(2)"); - return; - } - if (fstat(fd, &sb) < 0) { - fail_errno("fstat(2)"); - close(fd); - return; - } - if (sb.st_size != 0) { - fail_err("size after O_TRUNC %d != 0", (int)sb.st_size); - close(fd); - return; - } - close(fd); - if (shm_unlink(TEST_PATH) < 0) { - fail_errno("shm_unlink"); - return; - } - pass(); -} -TEST(trunc_resets_object, "O_TRUNC resets size"); - -static void -unlink_bad_path_pointer(void) -{ - - shm_unlink_should_fail((char *)1024, EFAULT); -} -TEST(unlink_bad_path_pointer, "unlink bad path pointer"); - -static void -unlink_path_too_long(void) -{ - char *page; - - page = malloc(MAXPATHLEN + 1); - memset(page, 'a', MAXPATHLEN); - page[MAXPATHLEN] = '\0'; - shm_unlink_should_fail(page, ENAMETOOLONG); - free(page); -} -TEST(unlink_path_too_long, "unlink pathname too long"); - -static void -test_object_resize(void) -{ - pid_t pid; - struct stat sb; - char *page; - int fd, status; - - /* Start off with a size of a single page. */ - fd = shm_open(SHM_ANON, O_CREAT | O_RDWR, 0777); - if (fd < 0) { - fail_errno("shm_open"); - return; - } - if (ftruncate(fd, getpagesize()) < 0) { - fail_errno("ftruncate(1)"); - close(fd); - return; - } - if (fstat(fd, &sb) < 0) { - fail_errno("fstat(1)"); - close(fd); - return; - } - if (sb.st_size != getpagesize()) { - fail_err("first resize failed"); - close(fd); - return; - } - - /* Write a '1' to the first byte. */ - page = mmap(0, getpagesize(), PROT_READ | PROT_WRITE, MAP_SHARED, fd, - 0); - if (page == MAP_FAILED) { - fail_errno("mmap(1)"); - close(fd); - return; - } - - page[0] = '1'; - - if (munmap(page, getpagesize()) < 0) { - fail_errno("munmap(1)"); - close(fd); - return; - } - - /* Grow the object to 2 pages. */ - if (ftruncate(fd, getpagesize() * 2) < 0) { - fail_errno("ftruncate(2)"); - close(fd); - return; - } - if (fstat(fd, &sb) < 0) { - fail_errno("fstat(2)"); - close(fd); - return; - } - if (sb.st_size != getpagesize() * 2) { - fail_err("second resize failed"); - close(fd); - return; - } - - /* Check for '1' at the first byte. */ - page = mmap(0, getpagesize() * 2, PROT_READ | PROT_WRITE, MAP_SHARED, - fd, 0); - if (page == MAP_FAILED) { - fail_errno("mmap(2)"); - close(fd); - return; - } - - if (page[0] != '1') { - fail_err("missing data at 0"); - close(fd); - return; - } - - /* Write a '2' at the start of the second page. */ - page[getpagesize()] = '2'; - - /* Shrink the object back to 1 page. */ - if (ftruncate(fd, getpagesize()) < 0) { - fail_errno("ftruncate(3)"); - close(fd); - return; - } - if (fstat(fd, &sb) < 0) { - fail_errno("fstat(3)"); - close(fd); - return; - } - if (sb.st_size != getpagesize()) { - fail_err("third resize failed"); - close(fd); - return; - } - - /* - * Fork a child process to make sure the second page is no - * longer valid. - */ - pid = fork(); - if (pid < 0) { - fail_errno("fork"); - close(fd); - return; - } - - if (pid == 0) { - struct rlimit lim; - char c; - - /* Don't generate a core dump. */ - getrlimit(RLIMIT_CORE, &lim); - lim.rlim_cur = 0; - setrlimit(RLIMIT_CORE, &lim); - - /* - * The previous ftruncate(2) shrunk the backing object - * so that this address is no longer valid, so reading - * from it should trigger a SIGSEGV. - */ - c = page[getpagesize()]; - fprintf(stderr, "child: page 1: '%c'\n", c); - exit(0); - } - if (wait(&status) < 0) { - fail_errno("wait"); - close(fd); - return; - } - if (!WIFSIGNALED(status) || WTERMSIG(status) != SIGSEGV) { - fail_err("child terminated with status %x", status); - close(fd); - return; - } - - /* Grow the object back to 2 pages. */ - if (ftruncate(fd, getpagesize() * 2) < 0) { - fail_errno("ftruncate(4)"); - close(fd); - return; - } - if (fstat(fd, &sb) < 0) { - fail_errno("fstat(4)"); - close(fd); - return; - } - if (sb.st_size != getpagesize() * 2) { - fail_err("second resize failed"); - close(fd); - return; - } - - /* - * Note that the mapping at 'page' for the second page is - * still valid, and now that the shm object has been grown - * back up to 2 pages, there is now memory backing this page - * so the read will work. However, the data should be zero - * rather than '2' as the old data was thrown away when the - * object was shrunk and the new pages when an object are - * grown are zero-filled. - */ - if (page[getpagesize()] != 0) { - fail_err("invalid data at %d", getpagesize()); - close(fd); - return; - } - - close(fd); - pass(); -} -TEST(test_object_resize, "object resize"); - -int -main(int argc, char *argv[]) -{ - - run_tests(); - return (0); -} |