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/*
Title: Wrap-arounds for I/O functions
Copyright (c) 2000
Cambridge University Technical Services Limited
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef WIN32
#include "winconfig.h"
#else
#include "config.h"
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h> /* Freebsd 2.1 at least requires this before stat.h */
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#include "proper_io.h"
// DCJM 11/5/06 - Do we really need this "fix" for a bug ten years ago in an OS that's
// probably never used now?
int proper_stat(char *filename, struct stat *fbp)
{
int res = stat(filename, fbp);
while (res != 0 && errno == EINTR)
{
res = stat(filename, fbp);
/* There's a bug in SunOS 5.3 (at least) whereby the stat following
an interrupted stat call can give junk results (ENOENT on a real file).
I suspect a timing-related problem on automounted file systems.
So let's try one more time, just to be sure.
SPF 16/12/96
*/
if (res != 0)
{
res = stat(filename, fbp);
}
};
return res;
}
#ifndef WINDOWS_PC
/* I don't know whether the same applies to lstat but we'll define
it in the same way just in case. DCJM 16/5/00. */
int proper_lstat(char *filename, struct stat *fbp)
{
int res = lstat(filename, fbp);
while (res != 0 && errno == EINTR)
{
res = lstat(filename, fbp);
if (res != 0)
{
res = lstat(filename, fbp);
}
};
return res;
}
#endif
/* There is a problem with getrusage on Solaris where it sometimes fails with EINTR.
// This is despite the documentation which doesn't mention this and is probably because
// it is implemented by opening a special device. We need to handle this and there's really
// no harm in doing that on all (Unix) systems. DCJM 27/2/03.
*/
#ifndef WINDOWS_PC
int proper_getrusage(int who, struct rusage *rusage)
{
while (1) {
int res = getrusage(who, rusage);
if (res == 0 || errno != EINTR) return res;
}
}
#endif
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