1 /* Test autofs "ignore" filtering for getment_r.
2 Copyright (C) 2019-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <array_length.h>
20 #include <errno.h>
21 #include <mntent.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <support/check.h>
26 #include <support/temp_file.h>
27 #include <support/xstdio.h>
28 #include <support/xunistd.h>
29
30 struct test_case
31 {
32 const char *line;
33 struct
34 {
35 /* Like struct mntent, but with const pointers. */
36 const char *mnt_fsname;
37 const char *mnt_dir;
38 const char *mnt_type;
39 const char *mnt_opts;
40 int mnt_freq;
41 int mnt_passno;
42 } expected;
43 };
44
45 static struct test_case test_cases[] =
46 {
47 { "/etc/auto.direct /mnt/auto/1 autofs defaults 0 0",
48 { "/etc/auto.direct", "/mnt/auto/1", "autofs", "defaults", 0, 0 } },
49
50 /* These entries are filtered out. */
51 { "/etc/auto.2 /mnt/auto/2 autofs ignore 0 0", { NULL, } },
52 { "/etc/auto.3 /mnt/auto/3 autofs ignore,other 1 2", { NULL, } },
53 { "/etc/auto.4 /mnt/auto/4 autofs other,ignore 3 4", { NULL, } },
54 { "/etc/auto.5 /mnt/auto/5 autofs opt1,ignore,opt2 5 6", { NULL, } },
55
56 /* Dummy entry to make the desynchronization more obvious. */
57 { "/dev/sda1 / xfs defaults 0 0",
58 { "/dev/sda1", "/", "xfs", "defaults", 0, 0 } },
59
60 /* These are not filtered because the file system is not autofs. */
61 { "/etc/auto.direct /mnt/auto/6 autofs1 ignore 0 0",
62 { "/etc/auto.direct", "/mnt/auto/6", "autofs1", "ignore", 0, 0 } },
63 { "/etc/auto.direct /mnt/auto/7 autofs1 ignore,other 0 0",
64 { "/etc/auto.direct", "/mnt/auto/7", "autofs1", "ignore,other", 0, 0 } },
65 { "/etc/auto.direct /mnt/auto/8 autofs1 other,ignore 0 0",
66 { "/etc/auto.direct", "/mnt/auto/8", "autofs1", "other,ignore", 0, 0 } },
67 { "/etc/auto.direct /mnt/auto/9 autofs1 opt1,ignore,opt2 0 0",
68 { "/etc/auto.direct", "/mnt/auto/9", "autofs1", "opt1,ignore,opt2", } },
69
70 /* These are not filtered because the string "ignore" is not an
71 option name. */
72 { "/etc/auto.direct /mnt/auto/10 autofs noignore 1 2",
73 { "/etc/auto.direct", "/mnt/auto/10", "autofs", "noignore", 1, 2 } },
74 { "/etc/auto.direct /mnt/auto/11 autofs noignore,other 0 0",
75 { "/etc/auto.direct", "/mnt/auto/11", "autofs", "noignore,other", } },
76 { "/etc/auto.direct /mnt/auto/12 autofs other,noignore 0 0",
77 { "/etc/auto.direct", "/mnt/auto/12", "autofs", "other,noignore", } },
78 { "/etc/auto.direct /mnt/auto/13 autofs errors=ignore 0 0",
79 { "/etc/auto.direct", "/mnt/auto/13", "autofs", "errors=ignore", } },
80 { "/etc/auto.direct /mnt/auto/14 autofs errors=ignore,other 0 0",
81 { "/etc/auto.direct", "/mnt/auto/14", "autofs",
82 "errors=ignore,other", } },
83 { "/etc/auto.direct /mnt/auto/15 autofs other,errors=ignore 0 0",
84 { "/etc/auto.direct", "/mnt/auto/15", "autofs",
85 "other,errors=ignore", } },
86
87 /* These are not filtered because the string is escaped. '\151'
88 is 'i', but it is not actually decoded by the parser. */
89 { "/etc/auto.\\151gnore /mnt/auto/16 autofs \\151gnore 0 0",
90 { "/etc/auto.\\151gnore", "/mnt/auto/16", "autofs",
91 "\\151gnore", } },
92 };
93
94 static int
do_test(void)95 do_test (void)
96 {
97 char *path;
98 xclose (create_temp_file ("tst-mntent-autofs-", &path));
99
100 /* Write the test file. */
101 FILE *fp = xfopen (path, "w");
102 for (size_t i = 0; i < array_length (test_cases); ++i)
103 fprintf (fp, "%s\n", test_cases[i].line);
104 xfclose (fp);
105
106 /* Open the test file again, this time for parsing. */
107 fp = setmntent (path, "r");
108 TEST_VERIFY_EXIT (fp != NULL);
109 char buffer[512];
110 struct mntent me;
111
112 for (size_t i = 0; i < array_length (test_cases); ++i)
113 {
114 if (test_cases[i].expected.mnt_type == NULL)
115 continue;
116
117 memset (buffer, 0xcc, sizeof (buffer));
118 memset (&me, 0xcc, sizeof (me));
119 struct mntent *pme = getmntent_r (fp, &me, buffer, sizeof (buffer));
120 TEST_VERIFY_EXIT (pme != NULL);
121 TEST_VERIFY (pme == &me);
122 TEST_COMPARE_STRING (test_cases[i].expected.mnt_fsname, me.mnt_fsname);
123 TEST_COMPARE_STRING (test_cases[i].expected.mnt_dir, me.mnt_dir);
124 TEST_COMPARE_STRING (test_cases[i].expected.mnt_type, me.mnt_type);
125 TEST_COMPARE_STRING (test_cases[i].expected.mnt_opts, me.mnt_opts);
126 TEST_COMPARE (test_cases[i].expected.mnt_freq, me.mnt_freq);
127 TEST_COMPARE (test_cases[i].expected.mnt_passno, me.mnt_passno);
128 }
129
130 TEST_VERIFY (getmntent_r (fp, &me, buffer, sizeof (buffer)) == NULL);
131
132 TEST_COMPARE (feof (fp), 1);
133 TEST_COMPARE (ferror (fp), 0);
134 errno = 0;
135 TEST_COMPARE (endmntent (fp), 1);
136 TEST_COMPARE (errno, 0);
137 free (path);
138 return 0;
139 }
140
141 #include <support/test-driver.c>
142