libexplain
1.4.D001
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00001 /* 00002 * libexplain - Explain errno values returned by libc functions 00003 * Copyright (C) 2013 Peter Miller 00004 * 00005 * This program is free software; you can redistribute it and/or modify it 00006 * under the terms of the GNU Lesser General Public License as published by 00007 * the Free Software Foundation; either version 3 of the License, or (at 00008 * your option) any later version. 00009 * 00010 * This program is distributed in the hope that it will be useful, but 00011 * WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser 00013 * General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU Lesser General Public License 00016 * along with this program. If not, see <http://www.gnu.org/licenses/>. 00017 */ 00018 00019 #include <libexplain/ac/errno.h> 00020 00021 #include <libexplain/lchownat.h> 00022 #include <libexplain/output.h> 00023 00024 00025 void 00026 explain_lchownat_or_die(int fildes, const char *pathname, int uid, int gid) 00027 { 00028 if (explain_lchownat_on_error(fildes, pathname, uid, gid) < 0) 00029 { 00030 explain_output_exit_failure(); 00031 } 00032 } 00033 00034 00035 int 00036 explain_lchownat_on_error(int fildes, const char *pathname, int uid, int gid) 00037 { 00038 int result; 00039 00040 #ifdef HAVE_LCHOWNAT 00041 result = lchownat(fildes, pathname, uid, gid); 00042 #else 00043 errno = ENOSYS; 00044 result = -1; 00045 #endif 00046 if (result < 0) 00047 { 00048 int hold_errno; 00049 00050 hold_errno = errno; 00051 explain_output_error 00052 ( 00053 "%s", 00054 explain_errno_lchownat(hold_errno, fildes, pathname, uid, gid) 00055 ); 00056 errno = hold_errno; 00057 } 00058 return result; 00059 } 00060 00061 00062 /* vim: set ts=8 sw=4 et : */