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dmorgan |
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/* |
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* sysfs_utils.c |
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* |
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* System utility functions for libsysfs |
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* |
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* Copyright (C) IBM Corp. 2003-2005 |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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*/ |
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#include "libsysfs.h" |
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#include "sysfs.h" |
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/** |
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* sysfs_get_name_from_path: returns last name from a "/" delimited path |
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* @path: path to get name from |
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* @name: where to put name |
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* @len: size of name |
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*/ |
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int sysfs_get_name_from_path(const char *path, char *name, size_t len) |
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{ |
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char tmp[SYSFS_PATH_MAX]; |
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char *n = NULL; |
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if (!path || !name || len == 0) { |
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errno = EINVAL; |
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return -1; |
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} |
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memset(tmp, 0, SYSFS_PATH_MAX); |
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safestrcpy(tmp, path); |
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n = strrchr(tmp, '/'); |
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if (n == NULL) { |
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errno = EINVAL; |
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return -1; |
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} |
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if (*(n+1) == '\0') { |
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*n = '\0'; |
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n = strrchr(tmp, '/'); |
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if (n == NULL) { |
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errno = EINVAL; |
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return -1; |
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} |
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} |
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n++; |
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safestrcpymax(name, n, len); |
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return 0; |
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} |