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_getdents 32 33 # include <assert.h> 34 # include <dirent.h> 35 # include <fcntl.h> 36 # include <stddef.h> 37 # include <stdio.h> 38 # include <sys/stat.h> 39 # include <unistd.h> 40 41 static const char fname[] = 42 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n" 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\nZ"; 50 static const char qname[] = 51 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n" 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\\nZ"; 59 60 static char buf[8192]; 61 62 static const char * 63 str_d_type(const unsigned char d_type) 64 { 65 switch (d_type) { 66 case DT_DIR: 67 return "DT_DIR"; 68 case DT_REG: 69 return "DT_REG"; 70 default: 71 return "DT_UNKNOWN"; 72 } 73 } 74 static void 75 print_dirent(const kernel_dirent *d) 76 { 77 const unsigned int d_name_offset = offsetof(kernel_dirent, d_name); 78 int d_name_len = d->d_reclen - d_name_offset - 1; 79 assert(d_name_len > 0); 80 81 printf("{d_ino=%llu, d_off=%llu, d_reclen=%u, d_name=", 82 (unsigned long long) d->d_ino, 83 (unsigned long long) d->d_off, d->d_reclen); 84 85 if (d->d_name[0] == '.') 86 printf("\"%.*s\"", d_name_len, d->d_name); 87 else 88 printf("\"%s\"", qname); 89 90 printf(", d_type=%s}", 91 str_d_type(*((const char *) d + d->d_reclen - 1))); 92 } 93 94 int 95 main(int ac, const char **av) 96 { 97 char *dname; 98 99 assert(ac == 1); 100 assert(asprintf(&dname, "%s.test.tmp.dir", av[0]) > 0); 101 assert(!mkdir(dname, 0700)); 102 assert(!chdir(dname)); 103 (void) close(0); 104 assert(!creat(fname, 0600)); 105 assert(!close(0)); 106 assert(!open(".", O_RDONLY | O_DIRECTORY)); 107 108 unsigned long count = (unsigned long) 0xfacefeeddeadbeefULL; 109 long rc = syscall(__NR_getdents, (long) 0xdefacedffffffffULL, NULL, 110 count); 111 printf("getdents(-1, NULL, %u) = %ld %s (%m)\n", 112 (unsigned) count, rc, errno2name()); 113 114 count = (unsigned long) 0xfacefeed00000000ULL | sizeof(buf); 115 while ((rc = syscall(__NR_getdents, 0, buf, count))) { 116 kernel_dirent *d; 117 long i; 118 119 if (rc < 0) 120 perror_msg_and_skip("getdents"); 121 printf("getdents(0, ["); 122 for (i = 0; i < rc; i += d->d_reclen) { 123 d = (kernel_dirent *) &buf[i]; 124 if (i) 125 printf(", "); 126 print_dirent(d); 127 } 128 printf("], %u) = %ld\n", (unsigned) count, rc); 129 } 130 printf("getdents(0, [], %u) = 0\n", (unsigned) count); 131 puts("+++ exited with 0 +++"); 132 assert(!unlink(fname)); 133 assert(!chdir("..")); 134 assert(!rmdir(dname)); 135 136 return 0; 137 } 138 139 #else 140 141 SKIP_MAIN_UNDEFINED("__NR_getdents") 142 143 #endif 144
