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