1 /*
2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@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_getdents64
33
34 # include <assert.h>
35 # include <dirent.h>
36 # include <fcntl.h>
37 # include <inttypes.h>
38 # include <stddef.h>
39 # include <stdio.h>
40 # include <sys/stat.h>
41 # include <unistd.h>
42
43 static const char fname[] =
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\nA\n"
51 "A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nZ";
52 static const char qname[] =
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\\nA\\n"
60 "A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nZ";
61
62 typedef struct {
63 uint64_t d_ino;
64 uint64_t d_off;
65 unsigned short d_reclen;
66 unsigned char d_type;
67 char d_name[256];
68 } kernel_dirent64;
69
70 static char buf[8192];
71
72 static const char *
str_d_type(const unsigned char d_type)73 str_d_type(const unsigned char d_type)
74 {
75 switch (d_type) {
76 case DT_DIR:
77 return "DT_DIR";
78 case DT_REG:
79 return "DT_REG";
80 default:
81 return "DT_UNKNOWN";
82 }
83 }
84 static void
print_dirent(const kernel_dirent64 * d)85 print_dirent(const kernel_dirent64 *d)
86 {
87 const unsigned int d_name_offset = offsetof(kernel_dirent64, d_name);
88 int d_name_len = d->d_reclen - d_name_offset;
89 assert(d_name_len > 0);
90
91 printf("{d_ino=%" PRIu64 ", d_off=%" PRId64
92 ", d_reclen=%u, d_type=%s, d_name=",
93 d->d_ino, d->d_off, d->d_reclen, str_d_type(d->d_type));
94
95 if (d->d_name[0] == '.')
96 printf("\"%.*s\"}", d_name_len, d->d_name);
97 else
98 printf("\"%s\"}", qname);
99 }
100
101 int
main(void)102 main(void)
103 {
104 static const char dname[] = "getdents64.test.tmp.dir";
105
106 assert(!mkdir(dname, 0700));
107 assert(!chdir(dname));
108 (void) close(0);
109 assert(!creat(fname, 0600));
110 assert(!close(0));
111 assert(!open(".", O_RDONLY | O_DIRECTORY));
112
113 unsigned long count = (unsigned long) 0xfacefeeddeadbeefULL;
114 long rc = syscall(__NR_getdents64, (long) 0xdefacedffffffffULL, NULL,
115 count);
116 printf("getdents64(-1, NULL, %u) = %ld %s (%m)\n",
117 (unsigned) count, rc, errno2name());
118
119 count = (unsigned long) 0xfacefeed00000000ULL | sizeof(buf);
120 while ((rc = syscall(__NR_getdents64, 0, buf, count))) {
121 kernel_dirent64 *d;
122 long i;
123
124 if (rc < 0)
125 perror_msg_and_skip("getdents64");
126 printf("getdents64(0, [");
127 for (i = 0; i < rc; i += d->d_reclen) {
128 d = (kernel_dirent64 *) &buf[i];
129 if (i)
130 printf(", ");
131 print_dirent(d);
132 }
133 printf("], %u) = %ld\n", (unsigned) count, rc);
134 }
135 printf("getdents64(0, [], %u) = 0\n", (unsigned) count);
136 puts("+++ exited with 0 +++");
137 assert(!unlink(fname));
138 assert(!chdir(".."));
139 assert(!rmdir(dname));
140
141 return 0;
142 }
143
144 #else
145
146 SKIP_MAIN_UNDEFINED("__NR_getdents64")
147
148 #endif
149