1 /* 2 * Copyright (c) 2016 Katerina Koukiou <k.koukiou (at) gmail.com> 3 * Copyright (c) 2016-2018 The strace developers. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "tests.h" 30 #include <asm/unistd.h> 31 32 #ifdef __NR_openat 33 34 # include <asm/fcntl.h> 35 # include <stdio.h> 36 # include <unistd.h> 37 38 #ifdef O_TMPFILE 39 /* The kernel & C libraries often inline O_DIRECTORY. */ 40 # define STRACE_O_TMPFILE (O_TMPFILE & ~O_DIRECTORY) 41 #else 42 # define STRACE_O_TMPFILE 0 43 #endif 44 45 static const char sample[] = "openat.sample"; 46 47 static void 48 test_mode_flag(unsigned int mode_val, const char *mode_str, 49 unsigned int flag_val, const char *flag_str) 50 { 51 long rc = syscall(__NR_openat, -1, sample, mode_val | flag_val, 0); 52 printf("openat(-1, \"%s\", %s%s%s%s) = %s\n", 53 sample, mode_str, 54 flag_val ? "|" : "", flag_str, 55 flag_val & (O_CREAT | STRACE_O_TMPFILE) ? ", 000" : "", 56 sprintrc(rc)); 57 } 58 59 int 60 main(void) 61 { 62 long fd = syscall(__NR_openat, -100, sample, O_RDONLY|O_CREAT, 0400); 63 printf("openat(AT_FDCWD, \"%s\", O_RDONLY|O_CREAT, 0400) = %s\n", 64 sample, sprintrc(fd)); 65 66 if (fd != -1) { 67 close(fd); 68 if (unlink(sample) == -1) 69 perror_msg_and_fail("unlink"); 70 71 fd = syscall(__NR_openat, -100, sample, O_RDONLY); 72 printf("openat(AT_FDCWD, \"%s\", O_RDONLY) = %s\n", 73 sample, sprintrc(fd)); 74 } 75 76 struct { 77 unsigned int val; 78 const char *str; 79 } modes[] = { 80 { ARG_STR(O_RDONLY) }, 81 { ARG_STR(O_WRONLY) }, 82 { ARG_STR(O_RDWR) }, 83 { ARG_STR(O_ACCMODE) } 84 }, flags[] = { 85 { ARG_STR(O_APPEND) }, 86 { ARG_STR(O_DIRECT) }, 87 { ARG_STR(O_DIRECTORY) }, 88 { ARG_STR(O_EXCL) }, 89 { ARG_STR(O_LARGEFILE) }, 90 { ARG_STR(O_NOATIME) }, 91 { ARG_STR(O_NOCTTY) }, 92 { ARG_STR(O_NOFOLLOW) }, 93 { ARG_STR(O_NONBLOCK) }, 94 { ARG_STR(O_SYNC) }, 95 { ARG_STR(O_TRUNC) }, 96 { ARG_STR(O_CREAT) }, 97 # ifdef O_CLOEXEC 98 { ARG_STR(O_CLOEXEC) }, 99 # endif 100 # ifdef O_DSYNC 101 { ARG_STR(O_DSYNC) }, 102 # endif 103 # ifdef __O_SYNC 104 { ARG_STR(__O_SYNC) }, 105 # endif 106 # ifdef O_PATH 107 { ARG_STR(O_PATH) }, 108 # endif 109 # ifdef O_TMPFILE 110 { ARG_STR(O_TMPFILE) }, 111 # endif 112 # ifdef __O_TMPFILE 113 { ARG_STR(__O_TMPFILE) }, 114 # endif 115 { ARG_STR(0x80000000) }, 116 { 0, "" } 117 }; 118 119 for (unsigned int m = 0; m < ARRAY_SIZE(modes); ++m) 120 for (unsigned int f = 0; f < ARRAY_SIZE(flags); ++f) 121 test_mode_flag(modes[m].val, modes[m].str, 122 flags[f].val, flags[f].str); 123 124 puts("+++ exited with 0 +++"); 125 return 0; 126 } 127 128 #else 129 130 SKIP_MAIN_UNDEFINED("__NR_openat") 131 132 #endif 133
