2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
29 #include <sys/syscall.h>
38 # include <sys/stat.h>
40 # include "kernel_types.h"
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";
61 static char buf[8192];
64 str_d_type(const unsigned char d_type)
76 print_dirent(const kernel_dirent *d)
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);
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);
86 if (d->d_name[0] == '.')
87 printf("\"%.*s\"", d_name_len, d->d_name);
89 printf("\"%s\"", qname);
91 printf(", d_type=%s}",
92 str_d_type(*((const char *) d + d->d_reclen - 1)));
96 main(int ac, const char **av)
102 assert(asprintf(&dname, "%s.test.tmp.dir", av[0]) > 0);
103 assert(!mkdir(dname, 0700));
104 assert(!chdir(dname));
106 assert(!creat(fname, 0600));
108 assert(!open(".", O_RDONLY | O_DIRECTORY));
109 while ((rc = syscall(__NR_getdents, 0, buf, sizeof(buf)))) {
114 perror_msg_and_skip("getdents");
115 printf("getdents(0, [");
116 for (i = 0; i < rc; i += d->d_reclen) {
117 d = (kernel_dirent *) &buf[i];
122 printf("], %zu) = %d\n", sizeof(buf), rc);
124 printf("getdents(0, [], %zu) = 0\n", sizeof(buf));
125 puts("+++ exited with 0 +++");
126 assert(!unlink(fname));
127 assert(!chdir(".."));
128 assert(!rmdir(dname));
135 SKIP_MAIN_UNDEFINED("__NR_getdents")