1/*	$NetBSD: libdm-file.c,v 1.1.1.1 2008/12/22 00:18:33 haad Exp $	*/
2
3/*
4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
5 * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
6 *
7 * This file is part of the device-mapper userspace tools.
8 *
9 * This copyrighted material is made available to anyone wishing to use,
10 * modify, copy, or redistribute it subject to the terms and conditions
11 * of the GNU Lesser General Public License v.2.1.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16 */
17
18#include "dmlib.h"
19
20#include <sys/file.h>
21#include <fcntl.h>
22#include <dirent.h>
23
24/*
25 * Created directories permissions are controled by umask values and
26 * they should be set by api user before calling this function.
27 * Changing directory owners is also left on caller.
28 */
29static int _create_dir_recursive(const char *dir)
30{
31	char *orig, *s;
32	int rc, r = 0;
33
34	log_verbose("Creating directory \"%s\"", dir);
35	/* Create parent directories */
36	orig = s = dm_strdup(dir);
37	while ((s = strchr(s, '/')) != NULL) {
38		*s = '\0';
39		if (*orig) {
40			rc = mkdir(orig, 0777);
41			if (rc < 0 && errno != EEXIST) {
42				if (errno != EROFS)
43					log_sys_error("mkdir", orig);
44				goto out;
45			}
46		}
47		*s++ = '/';
48	}
49
50	/* Create final directory */
51	rc = mkdir(dir, 0777);
52	if (rc < 0 && errno != EEXIST) {
53		if (errno != EROFS)
54			log_sys_error("mkdir", orig);
55		goto out;
56	}
57
58	r = 1;
59out:
60	dm_free(orig);
61	return r;
62}
63
64int dm_create_dir(const char *dir)
65{
66	struct stat info;
67
68	if (!*dir)
69		return 1;
70
71	if (stat(dir, &info) < 0)
72		return _create_dir_recursive(dir);
73
74	if (S_ISDIR(info.st_mode))
75		return 1;
76
77	log_error("Directory \"%s\" not found", dir);
78	return 0;
79}
80
81int dm_fclose(FILE *stream)
82{
83	int prev_fail = ferror(stream);
84	int fclose_fail = fclose(stream);
85
86	/* If there was a previous failure, but fclose succeeded,
87	   clear errno, since ferror does not set it, and its value
88	   may be unrelated to the ferror-reported failure.  */
89	if (prev_fail && !fclose_fail)
90		errno = 0;
91
92	return prev_fail || fclose_fail ? EOF : 0;
93}
94