/[soft]/ldetect/trunk/sysfs_utils.c
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Contents of /ldetect/trunk/sysfs_utils.c

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Revision 1357 - (show annotations) (download)
Tue May 17 09:21:22 2011 UTC (10 years, 2 months ago) by dmorgan
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File size: 1552 byte(s)
Import  ldetect
1 /*
2 * sysfs_utils.c
3 *
4 * System utility functions for libsysfs
5 *
6 * Copyright (C) IBM Corp. 2003-2005
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23 #include "libsysfs.h"
24 #include "sysfs.h"
25
26 /**
27 * sysfs_get_name_from_path: returns last name from a "/" delimited path
28 * @path: path to get name from
29 * @name: where to put name
30 * @len: size of name
31 */
32 int sysfs_get_name_from_path(const char *path, char *name, size_t len)
33 {
34 char tmp[SYSFS_PATH_MAX];
35 char *n = NULL;
36
37 if (!path || !name || len == 0) {
38 errno = EINVAL;
39 return -1;
40 }
41 memset(tmp, 0, SYSFS_PATH_MAX);
42 safestrcpy(tmp, path);
43 n = strrchr(tmp, '/');
44 if (n == NULL) {
45 errno = EINVAL;
46 return -1;
47 }
48 if (*(n+1) == '\0') {
49 *n = '\0';
50 n = strrchr(tmp, '/');
51 if (n == NULL) {
52 errno = EINVAL;
53 return -1;
54 }
55 }
56 n++;
57 safestrcpymax(name, n, len);
58 return 0;
59 }

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