| /* |
| * Check decoding of pread64 and pwrite64 syscalls. |
| * |
| * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> |
| * 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. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "tests.h" |
| |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <sys/uio.h> |
| #include <unistd.h> |
| |
| int |
| main(void) |
| { |
| tprintf("%s", ""); |
| |
| static char tmp[] = "pread64-pwrite64-tmpfile"; |
| if (open(tmp, O_CREAT|O_RDONLY|O_TRUNC, 0600) != 0) |
| perror_msg_and_fail("creat: %s", tmp); |
| if (open(tmp, O_WRONLY) != 1) |
| perror_msg_and_fail("open: %s", tmp); |
| |
| char *nil = tail_alloc(1); |
| *nil = '\0'; |
| |
| static const char w_c[] = "0123456789abcde"; |
| const unsigned int w_len = LENGTH_OF(w_c); |
| const char *w_d = hexdump_strdup(w_c); |
| const void *w = tail_memdup(w_c, w_len); |
| |
| static const char r0_c[] = "01234567"; |
| const char *r0_d = hexdump_strdup(r0_c); |
| const unsigned int r0_len = (w_len + 1) / 2; |
| void *r0 = tail_alloc(r0_len); |
| |
| static const char r1_c[] = "89abcde"; |
| const char *r1_d = hexdump_strdup(r1_c); |
| const unsigned int r1_len = w_len - r0_len; |
| void *r1 = tail_alloc(w_len); |
| |
| void *efault = r1 - get_page_size(); |
| |
| long rc; |
| |
| rc = pwrite(1, w, 0, 0); |
| if (rc) |
| perror_msg_and_fail("pwrite64: expected 0, returned %ld", rc); |
| tprintf("pwrite64(1, \"\", 0, 0) = 0\n"); |
| |
| rc = pwrite(1, w, w_len + 1, 0); |
| if (rc != -1) |
| perror_msg_and_fail("pwrite64: expected -1 EFAULT" |
| ", returned %ld", rc); |
| tprintf("pwrite64(1, %p, %u, 0) = -1 EFAULT (%m)\n", |
| w, w_len + 1); |
| |
| rc = pwrite(1, nil, 1, -3); |
| if (rc != -1) |
| perror_msg_and_fail("pwrite64: expected -1, returned %ld", rc); |
| tprintf("pwrite64(1, \"\\0\", 1, -3) = -1 EINVAL (%m)\n"); |
| |
| rc = pwrite(1, w, w_len, 0); |
| if (rc != (int) w_len) |
| perror_msg_and_fail("pwrite64: expected %u, returned %ld", |
| w_len, rc); |
| tprintf("pwrite64(1, \"%s\", %u, 0) = %ld\n" |
| " | 00000 %-49s %-16s |\n", |
| w_c, w_len, rc, w_d, w_c); |
| close(1); |
| |
| rc = pread(0, efault, 1, 0); |
| if (rc != -1) |
| perror_msg_and_fail("pread64: expected -1, returned %ld", rc); |
| tprintf("pread64(0, %p, 1, 0) = -1 EFAULT (%m)\n", efault); |
| |
| rc = pread(0, efault, 2, -7); |
| if (rc != -1) |
| perror_msg_and_fail("pread64: expected -1, returned %ld", rc); |
| tprintf("pread64(0, %p, 2, -7) = -1 EINVAL (%m)\n", efault); |
| |
| rc = pread(0, r0, r0_len, 0); |
| if (rc != (int) r0_len) |
| perror_msg_and_fail("pread64: expected %u, returned %ld", |
| r0_len, rc); |
| tprintf("pread64(0, \"%s\", %u, 0) = %ld\n" |
| " | 00000 %-49s %-16s |\n", |
| r0_c, r0_len, rc, r0_d, r0_c); |
| |
| rc = pread(0, r1, w_len, r0_len); |
| if (rc != (int) r1_len) |
| perror_msg_and_fail("pread64: expected %u, returned %ld", |
| r1_len, rc); |
| tprintf("pread64(0, \"%s\", %u, %u) = %ld\n" |
| " | 00000 %-49s %-16s |\n", |
| r1_c, w_len, r0_len, rc, r1_d, r1_c); |
| close(0); |
| |
| const off_t offset = 0xdefaceddeadbeefLL; |
| const int rw_len = 8; |
| char *rw_buf = tail_alloc(rw_len); |
| |
| if (open("/dev/zero", O_RDONLY)) |
| perror_msg_and_fail("open"); |
| |
| rc = pread(0, rw_buf, rw_len, offset); |
| if (rc != rw_len) |
| perror_msg_and_fail("pread64: expected %d, returned %ld", |
| rw_len, rc); |
| |
| tprintf("%s(%d, \"%s\", %d, %lld) = %ld\n" |
| " | 00000 %-49s %-16s |\n", |
| "pread64", 0, "\\0\\0\\0\\0\\0\\0\\0\\0", |
| rw_len, (long long) offset, rc, |
| " 00 00 00 00 00 00 00 00", "........"); |
| |
| if (open("/dev/null", O_WRONLY) != 1) |
| perror_msg_and_fail("open"); |
| |
| rc = pwrite(1, rw_buf, rw_len, offset); |
| if (rc != rw_len) |
| perror_msg_and_fail("pwrite64: expected %d, returned %ld", |
| rw_len, rc); |
| |
| tprintf("%s(%d, \"%s\", %d, %lld) = %ld\n" |
| " | 00000 %-49s %-16s |\n", |
| "pwrite64", 1, "\\0\\0\\0\\0\\0\\0\\0\\0", |
| rw_len, (long long) offset, rc, |
| " 00 00 00 00 00 00 00 00", "........"); |
| |
| tprintf("+++ exited with 0 +++\n"); |
| return 0; |
| } |