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_getdents64 32 33 # include <assert.h> 34 # include <dirent.h> 35 # include <fcntl.h> 36 # include <inttypes.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 typedef struct { 62 uint64_t d_ino; 63 uint64_t d_off; 64 unsigned short d_reclen; 65 unsigned char d_type; 66 char d_name[256]; 67 } kernel_dirent64; 68 69 static char buf[8192]; 70 71 static const char * 72 str_d_type(const unsigned char d_type) 73 { 74 switch (d_type) { 75 case DT_DIR: 76 return "DT_DIR"; 77 case DT_REG: 78 return "DT_REG"; 79 default: 80 return "DT_UNKNOWN"; 81 } 82 } 83 static void 84 print_dirent(const kernel_dirent64 *d) 85 { 86 const unsigned int d_name_offset = offsetof(kernel_dirent64, d_name); 87 int d_name_len = d->d_reclen - d_name_offset; 88 assert(d_name_len > 0); 89 90 printf("{d_ino=%" PRIu64 ", d_off=%" PRId64 91 ", d_reclen=%u, d_type=%s, d_name=", 92 d->d_ino, d->d_off, d->d_reclen, str_d_type(d->d_type)); 93 94 if (d->d_name[0] == '.') 95 printf("\"%.*s\"}", d_name_len, d->d_name); 96 else 97 printf("\"%s\"}", qname); 98 } 99 100 int 101 main(int ac, const char **av) 102 { 103 char *dname; 104 105 assert(ac == 1); 106 assert(asprintf(&dname, "%s.test.tmp.dir", av[0]) > 0); 107 assert(!mkdir(dname, 0700)); 108 assert(!chdir(dname)); 109 (void) close(0); 110 assert(!creat(fname, 0600)); 111 assert(!close(0)); 112 assert(!open(".", O_RDONLY | O_DIRECTORY)); 113 114 unsigned long count = (unsigned long) 0xfacefeeddeadbeefULL; 115 long rc = syscall(__NR_getdents64, (long) 0xdefacedffffffffULL, NULL, 116 count); 117 printf("getdents64(-1, NULL, %u) = %ld %s (%m)\n", 118 (unsigned) count, rc, errno2name()); 119 120 count = (unsigned long) 0xfacefeed00000000ULL | sizeof(buf); 121 while ((rc = syscall(__NR_getdents64, 0, buf, count))) { 122 kernel_dirent64 *d; 123 long i; 124 125 if (rc < 0) 126 perror_msg_and_skip("getdents64"); 127 printf("getdents64(0, ["); 128 for (i = 0; i < rc; i += d->d_reclen) { 129 d = (kernel_dirent64 *) &buf[i]; 130 if (i) 131 printf(", "); 132 print_dirent(d); 133 } 134 printf("], %u) = %ld\n", (unsigned) count, rc); 135 } 136 printf("getdents64(0, [], %u) = 0\n", (unsigned) count); 137 puts("+++ exited with 0 +++"); 138 assert(!unlink(fname)); 139 assert(!chdir("..")); 140 assert(!rmdir(dname)); 141 142 return 0; 143 } 144 145 #else 146 147 SKIP_MAIN_UNDEFINED("__NR_getdents64") 148 149 #endif 150
