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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libiberty/] [unlink-if-ordinary.c] - Rev 321
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/* unlink-if-ordinary.c - remove link to a file unless it is special Copyright (C) 2004, 2005 Free Software Foundation, Inc. This file is part of the libiberty library. This library 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 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 General Public License for more details. You should have received a copy of the GNU General Public License along with GNU CC; see the file COPYING. If not, write to the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. As a special exception, if you link this library with files compiled with a GNU compiler to produce an executable, this does not cause the resulting executable to be covered by the GNU General Public License. This exception does not however invalidate any other reasons why the executable file might be covered by the GNU General Public License. */ /* @deftypefn Supplemental int unlink_if_ordinary (const char*) Unlinks the named file, unless it is special (e.g. a device file). Returns 0 when the file was unlinked, a negative value (and errno set) when there was an error deleting the file, and a positive value if no attempt was made to unlink the file because it is special. @end deftypefn */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <sys/types.h> #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #if HAVE_SYS_STAT_H #include <sys/stat.h> #endif #include "libiberty.h" #ifndef S_ISLNK #ifdef S_IFLNK #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) #else #define S_ISLNK(m) 0 #define lstat stat #endif #endif int unlink_if_ordinary (const char *name) { struct stat st; if (lstat (name, &st) == 0 && (S_ISREG (st.st_mode) || S_ISLNK (st.st_mode))) return unlink (name); return 1; }
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