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c23de0aa | 1 | /* Temporary file handling for tests. |
bfff8b1b | 2 | Copyright (C) 1998-2017 Free Software Foundation, Inc. |
c23de0aa FW |
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 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | /* This is required to get an mkstemp which can create large files on | |
20 | some 32-bit platforms. */ | |
21 | #define _FILE_OFFSET_BITS 64 | |
22 | ||
23 | #include <support/temp_file.h> | |
24 | #include <support/temp_file-internal.h> | |
25 | #include <support/support.h> | |
26 | ||
27 | #include <paths.h> | |
28 | #include <search.h> | |
29 | #include <stdio.h> | |
30 | #include <stdlib.h> | |
31 | #include <string.h> | |
32 | ||
33 | /* List of temporary files. */ | |
34 | static struct temp_name_list | |
35 | { | |
36 | struct qelem q; | |
37 | char *name; | |
38 | } *temp_name_list; | |
39 | ||
40 | /* Location of the temporary files. Set by the test skeleton via | |
41 | support_set_test_dir. The string is not be freed. */ | |
42 | static const char *test_dir = _PATH_TMP; | |
43 | ||
44 | void | |
45 | add_temp_file (const char *name) | |
46 | { | |
47 | struct temp_name_list *newp | |
48 | = (struct temp_name_list *) xcalloc (sizeof (*newp), 1); | |
49 | char *newname = strdup (name); | |
50 | if (newname != NULL) | |
51 | { | |
52 | newp->name = newname; | |
53 | if (temp_name_list == NULL) | |
54 | temp_name_list = (struct temp_name_list *) &newp->q; | |
55 | else | |
56 | insque (newp, temp_name_list); | |
57 | } | |
58 | else | |
59 | free (newp); | |
60 | } | |
61 | ||
62 | int | |
63 | create_temp_file (const char *base, char **filename) | |
64 | { | |
65 | char *fname; | |
66 | int fd; | |
67 | ||
68 | fname = (char *) xmalloc (strlen (test_dir) + 1 + strlen (base) | |
69 | + sizeof ("XXXXXX")); | |
70 | strcpy (stpcpy (stpcpy (stpcpy (fname, test_dir), "/"), base), "XXXXXX"); | |
71 | ||
72 | fd = mkstemp (fname); | |
73 | if (fd == -1) | |
74 | { | |
75 | printf ("cannot open temporary file '%s': %m\n", fname); | |
76 | free (fname); | |
77 | return -1; | |
78 | } | |
79 | ||
80 | add_temp_file (fname); | |
81 | if (filename != NULL) | |
82 | *filename = fname; | |
83 | else | |
84 | free (fname); | |
85 | ||
86 | return fd; | |
87 | } | |
88 | ||
89 | /* Helper functions called by the test skeleton follow. */ | |
90 | ||
91 | void | |
92 | support_set_test_dir (const char *path) | |
93 | { | |
94 | test_dir = path; | |
95 | } | |
96 | ||
97 | void | |
98 | support_delete_temp_files (void) | |
99 | { | |
100 | while (temp_name_list != NULL) | |
101 | { | |
2bda2d82 FW |
102 | /* For some tests, the temporary file removal runs multiple |
103 | times (in the parent processes and the subprocess), so do not | |
104 | report a failed removal attempt. */ | |
105 | (void) remove (temp_name_list->name); | |
c23de0aa FW |
106 | free (temp_name_list->name); |
107 | ||
108 | struct temp_name_list *next | |
109 | = (struct temp_name_list *) temp_name_list->q.q_forw; | |
110 | free (temp_name_list); | |
111 | temp_name_list = next; | |
112 | } | |
113 | } | |
114 | ||
115 | void | |
116 | support_print_temp_files (FILE *f) | |
117 | { | |
118 | if (temp_name_list != NULL) | |
119 | { | |
120 | struct temp_name_list *n; | |
121 | fprintf (f, "temp_files=(\n"); | |
122 | for (n = temp_name_list; | |
123 | n != NULL; | |
124 | n = (struct temp_name_list *) n->q.q_forw) | |
125 | fprintf (f, " '%s'\n", n->name); | |
126 | fprintf (f, ")\n"); | |
127 | } | |
128 | } |