branches/1/sysfs_utils.c

/*
 * sysfs_utils.c
 *
 * System utility functions for libsysfs
 *
 * Copyright (C) IBM Corp. 2003-2005
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
#include "libsysfs.h"
#include "sysfs.h"

/**
 * sysfs_get_name_from_path: returns last name from a "/" delimited path
 * @path: path to get name from
 * @name: where to put name
 * @len: size of name
 */
int sysfs_get_name_from_path(const char *path, char *name, size_t len)
{
        char tmp[SYSFS_PATH_MAX];
        char *n = NULL;

        if (!path || !name || len == 0) {
                errno = EINVAL;
                return -1;
        }
        memset(tmp, 0, SYSFS_PATH_MAX);
        safestrcpy(tmp, path);
        n = strrchr(tmp, '/');
        if (n == NULL) {
                errno = EINVAL;
                return -1;
        }
        if (*(n+1) == '\0') {
                *n = '\0';
                n = strrchr(tmp, '/');
                if (n == NULL) {
                        errno = EINVAL;
                        return -1;
                }
        }
        n++;
        safestrcpymax(name, n, len);
        return 0;
}
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	}