72 lines
2 KiB
C
72 lines
2 KiB
C
|
/* unlink-if-ordinary.c - remove link to a file unless it is special
|
||
|
|
Copyright (C) 2004 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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
|
||
|
|
|
||
|
|
#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 (name)
|
||
|
|
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;
|
||
|
|
}
|