1 /*
2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@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 *
str_d_type(const unsigned char d_type)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
print_dirent(const kernel_dirent64 * d)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
main(int ac,const char ** av)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