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author | DJ Delorie <dj@redhat.com> | 2005-03-01 14:33:00 +0000 |
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committer | DJ Delorie <dj@redhat.com> | 2005-03-01 14:33:00 +0000 |
commit | 190eb1370b7b7e8f608294d3b03d315a70761601 (patch) | |
tree | 37806f8b633b53cbe07602bf75339f97c66df14a /libiberty/unlink-if-ordinary.c | |
parent | c7f17d462ad0bfb2000a471df97af0b2f5023081 (diff) | |
download | binutils-190eb1370b7b7e8f608294d3b03d315a70761601.zip binutils-190eb1370b7b7e8f608294d3b03d315a70761601.tar.gz binutils-190eb1370b7b7e8f608294d3b03d315a70761601.tar.bz2 |
merge from gcc
Diffstat (limited to 'libiberty/unlink-if-ordinary.c')
-rw-r--r-- | libiberty/unlink-if-ordinary.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/libiberty/unlink-if-ordinary.c b/libiberty/unlink-if-ordinary.c new file mode 100644 index 0000000..297b14b --- /dev/null +++ b/libiberty/unlink-if-ordinary.c @@ -0,0 +1,71 @@ +/* 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; +} |