1 /* 2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "tests.h" 29 #include <asm/unistd.h> 30 31 #ifdef __NR_sendfile 32 33 # include <assert.h> 34 # include <errno.h> 35 # include <fcntl.h> 36 # include <stdio.h> 37 # include <stdint.h> 38 # include <unistd.h> 39 # include <sys/socket.h> 40 # include <sys/stat.h> 41 42 int 43 main(int ac, const char **av) 44 { 45 assert(ac == 1); 46 47 (void) close(0); 48 if (open("/dev/zero", O_RDONLY) != 0) 49 perror_msg_and_skip("open: %s", "/dev/zero"); 50 51 int sv[2]; 52 if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv)) 53 perror_msg_and_skip("socketpair"); 54 55 int reg_in = open(av[0], O_RDONLY); 56 if (reg_in < 0) 57 perror_msg_and_fail("open: %s", av[0]); 58 59 struct stat stb; 60 assert(fstat(reg_in, &stb) == 0); 61 const size_t blen = stb.st_size / 3; 62 const size_t alen = stb.st_size - blen; 63 assert(S_ISREG(stb.st_mode) && blen > 0); 64 65 const size_t page_len = get_page_size(); 66 assert(syscall(__NR_sendfile, 0, 1, NULL, page_len) == -1); 67 if (EBADF != errno) 68 perror_msg_and_skip("sendfile"); 69 printf("sendfile(0, 1, NULL, %lu) = -1 EBADF (%m)\n", 70 (unsigned long) page_len); 71 72 uint32_t *p_off = tail_alloc(sizeof(uint32_t)); 73 void *p = p_off + 1; 74 *p_off = 0; 75 76 assert(syscall(__NR_sendfile, 0, 1, p, page_len) == -1); 77 printf("sendfile(0, 1, %#lx, %lu) = -1 EFAULT (%m)\n", 78 (unsigned long) p, (unsigned long) page_len); 79 80 assert(syscall(__NR_sendfile, sv[1], reg_in, NULL, alen) 81 == (long) alen); 82 printf("sendfile(%d, %d, NULL, %lu) = %lu\n", 83 sv[1], reg_in, (unsigned long) alen, 84 (unsigned long) alen); 85 86 p = p_off; 87 if (syscall(__NR_sendfile, sv[1], reg_in, p_off, alen) != (long) alen) { 88 printf("sendfile(%d, %d, %#lx, %lu) = -1 EFAULT (%m)\n", 89 sv[1], reg_in, (unsigned long) p_off, 90 (unsigned long) alen); 91 --p_off; 92 *p_off = 0; 93 assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, alen) 94 == (long) alen); 95 } 96 printf("sendfile(%d, %d, [0] => [%lu], %lu) = %lu\n", 97 sv[1], reg_in, (unsigned long) alen, 98 (unsigned long) alen, (unsigned long) alen); 99 100 assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, stb.st_size + 1) 101 == (long) blen); 102 printf("sendfile(%d, %d, [%lu] => [%lu], %lu) = %lu\n", 103 sv[1], reg_in, (unsigned long) alen, 104 (unsigned long) stb.st_size, 105 (unsigned long) stb.st_size + 1, 106 (unsigned long) blen); 107 108 if (p_off != p) { 109 uint64_t *p_off64 = (uint64_t *) p_off; 110 *p_off64 = 0xcafef00dfacefeedULL; 111 assert(syscall(__NR_sendfile, sv[1], reg_in, p_off64, 1) == -1); 112 printf("sendfile(%d, %d, [14627392582579060461], 1)" 113 " = -1 EINVAL (%m)\n", sv[1], reg_in); 114 *p_off64 = 0xdefaced; 115 } else { 116 *p_off = 0xdefaced; 117 } 118 assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, 1) == 0); 119 printf("sendfile(%d, %d, [233811181], 1) = 0\n", 120 sv[1], reg_in); 121 122 puts("+++ exited with 0 +++"); 123 return 0; 124 } 125 126 #else 127 128 SKIP_MAIN_UNDEFINED("__NR_sendfile") 129 130 #endif 131
