1 /* 2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * Copyright (c) 2015-2017 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_getdents 33 34 # include <assert.h> 35 # include <dirent.h> 36 # include <fcntl.h> 37 # include <stddef.h> 38 # include <stdio.h> 39 # include <sys/stat.h> 40 # include <unistd.h> 41 42 static const char fname[] = 43 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n" 44 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n" 45 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n" 46 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n" 47 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n" 48 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n" 49 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n" 50 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nZ"; 51 static const char qname[] = 52 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n" 53 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n" 54 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n" 55 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n" 56 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n" 57 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n" 58 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n" 59 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nZ"; 60 61 static char buf[8192]; 62 63 static const char * 64 str_d_type(const unsigned char d_type) 65 { 66 switch (d_type) { 67 case DT_DIR: 68 return "DT_DIR"; 69 case DT_REG: 70 return "DT_REG"; 71 default: 72 return "DT_UNKNOWN"; 73 } 74 } 75 static void 76 print_dirent(const kernel_dirent *d) 77 { 78 const unsigned int d_name_offset = offsetof(kernel_dirent, d_name); 79 int d_name_len = d->d_reclen - d_name_offset - 1; 80 assert(d_name_len > 0); 81 82 printf("{d_ino=%llu, d_off=%llu, d_reclen=%u, d_name=", 83 (unsigned long long) d->d_ino, 84 (unsigned long long) d->d_off, d->d_reclen); 85 86 if (d->d_name[0] == '.') 87 printf("\"%.*s\"", d_name_len, d->d_name); 88 else 89 printf("\"%s\"", qname); 90 91 printf(", d_type=%s}", 92 str_d_type(*((const char *) d + d->d_reclen - 1))); 93 } 94 95 int 96 main(void) 97 { 98 static const char dname[] = "getdents.test.tmp.dir"; 99 100 assert(!mkdir(dname, 0700)); 101 assert(!chdir(dname)); 102 (void) close(0); 103 assert(!creat(fname, 0600)); 104 assert(!close(0)); 105 assert(!open(".", O_RDONLY | O_DIRECTORY)); 106 107 unsigned long count = (unsigned long) 0xfacefeeddeadbeefULL; 108 long rc = syscall(__NR_getdents, (long) 0xdefacedffffffffULL, NULL, 109 count); 110 printf("getdents(-1, NULL, %u) = %ld %s (%m)\n", 111 (unsigned) count, rc, errno2name()); 112 113 count = (unsigned long) 0xfacefeed00000000ULL | sizeof(buf); 114 while ((rc = syscall(__NR_getdents, 0, buf, count))) { 115 kernel_dirent *d; 116 long i; 117 118 if (rc < 0) 119 perror_msg_and_skip("getdents"); 120 printf("getdents(0, ["); 121 for (i = 0; i < rc; i += d->d_reclen) { 122 d = (kernel_dirent *) &buf[i]; 123 if (i) 124 printf(", "); 125 print_dirent(d); 126 } 127 printf("], %u) = %ld\n", (unsigned) count, rc); 128 } 129 printf("getdents(0, [], %u) = 0\n", (unsigned) count); 130 puts("+++ exited with 0 +++"); 131 assert(!unlink(fname)); 132 assert(!chdir("..")); 133 assert(!rmdir(dname)); 134 135 return 0; 136 } 137 138 #else 139 140 SKIP_MAIN_UNDEFINED("__NR_getdents") 141 142 #endif 143
