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_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 *
str_d_type(const unsigned char d_type)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
print_dirent(const kernel_dirent * d)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
main(void)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