/* provide consistent interface to chown for systems that don't interpret an ID of -1 as meaning `don't change the corresponding ID'. Copyright (C) 1997 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* written by Jim Meyering */ #include <config.h> /* Disable the definition of chown to rpl_chown (from config.h) in this file. Otherwise, we'd get conflicting prototypes for rpl_chown on most systems. */ #undef chown #include <sys/types.h> #include <sys/stat.h> #if HAVE_UNISTD_H # include <unistd.h> #endif /* FIXME: describe. */ int rpl_chown (const char *file, uid_t uid, gid_t gid) { if (gid == (gid_t) -1 || uid == (uid_t) -1) { struct stat file_stats; /* Stat file to get id(s) that should remain unchanged. */ if (stat (file, &file_stats)) return 1; if (gid == (gid_t) -1) gid = file_stats.st_gid; if (uid == (uid_t) -1) uid = file_stats.st_uid; } return chown (file, uid, gid); }