1 /* 2 * This file is part of vmsplice strace test. 3 * 4 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org> 5 * Copyright (c) 2016-2017 The strace developers. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "tests.h" 32 #include <asm/unistd.h> 33 34 #if defined __NR_vmsplice 35 36 # include <assert.h> 37 # include <stdio.h> 38 # include <unistd.h> 39 # include <sys/uio.h> 40 41 int 42 main(void) 43 { 44 tprintf("%s", ""); 45 46 int fds[2]; 47 if (pipe(fds)) 48 perror_msg_and_fail("pipe"); 49 assert(0 == fds[0]); 50 assert(1 == fds[1]); 51 52 static const char w0_c[] = "012"; 53 const char *w0_d = hexdump_strdup(w0_c); 54 void *w0 = tail_memdup(w0_c, LENGTH_OF(w0_c)); 55 56 static const char w1_c[] = "34567"; 57 const char *w1_d = hexdump_strdup(w1_c); 58 void *w1 = tail_memdup(w1_c, LENGTH_OF(w1_c)); 59 60 static const char w2_c[] = "89abcde"; 61 const char *w2_d = hexdump_strdup(w2_c); 62 void *w2 = tail_memdup(w2_c, LENGTH_OF(w2_c)); 63 64 const struct iovec iov_[] = { 65 { 66 .iov_base = w0, 67 .iov_len = LENGTH_OF(w0_c) 68 }, { 69 .iov_base = w1, 70 .iov_len = LENGTH_OF(w1_c) 71 }, { 72 .iov_base = w2, 73 .iov_len = LENGTH_OF(w2_c) 74 } 75 }; 76 const struct iovec *iov = tail_memdup(iov_, sizeof(iov_)); 77 const unsigned int len = 78 LENGTH_OF(w0_c) + LENGTH_OF(w1_c) + LENGTH_OF(w2_c); 79 80 tprintf("vmsplice(1, [{iov_base=\"%s\", iov_len=%u}" 81 ", {iov_base=\"%s\", iov_len=%u}" 82 ", {iov_base=\"%s\", iov_len=%u}], %u, %s) = %u\n" 83 " * %u bytes in buffer 0\n" 84 " | 00000 %-49s %-16s |\n" 85 " * %u bytes in buffer 1\n" 86 " | 00000 %-49s %-16s |\n" 87 " * %u bytes in buffer 2\n" 88 " | 00000 %-49s %-16s |\n", 89 w0_c, LENGTH_OF(w0_c), w1_c, LENGTH_OF(w1_c), 90 w2_c, LENGTH_OF(w2_c), (unsigned int) ARRAY_SIZE(iov_), 91 "SPLICE_F_NONBLOCK", len, 92 LENGTH_OF(w0_c), w0_d, w0_c, 93 LENGTH_OF(w1_c), w1_d, w1_c, LENGTH_OF(w2_c), w2_d, w2_c); 94 95 const long rc = syscall(__NR_vmsplice, 1, iov, ARRAY_SIZE(iov_), 2); 96 if (rc < 0) 97 perror_msg_and_skip("vmsplice"); 98 assert(rc == (int) len); 99 100 tprintf("+++ exited with 0 +++\n"); 101 return 0; 102 } 103 104 #else 105 106 SKIP_MAIN_UNDEFINED("__NR_vmsplice") 107 108 #endif 109
