0,0 → 1,72 |
/* unlink-if-ordinary.c - remove link to a file unless it is special |
Copyright (C) 2004, 2005 Free Software Foundation, Inc. |
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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. |
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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. */ |
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/* |
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@deftypefn Supplemental int unlink_if_ordinary (const char*) |
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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. |
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@end deftypefn |
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*/ |
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#ifdef HAVE_CONFIG_H |
#include "config.h" |
#endif |
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#include <sys/types.h> |
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#ifdef HAVE_UNISTD_H |
#include <unistd.h> |
#endif |
#if HAVE_SYS_STAT_H |
#include <sys/stat.h> |
#endif |
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#include "libiberty.h" |
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#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 |
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int |
unlink_if_ordinary (const char *name) |
{ |
struct stat st; |
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if (lstat (name, &st) == 0 |
&& (S_ISREG (st.st_mode) || S_ISLNK (st.st_mode))) |
return unlink (name); |
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return 1; |
} |