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/* Copyright (C) 1991 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include "ansidecl.h"
#include <errno.h>
#include <stddef.h>
#include <sys/types.h>
/* This will make it not define major, minor, makedev, and S_IF*. */
#undef __USE_BSD
#undef __USE_MISC
#include <sys/stat.h>
#undef stat
#undef fstat
#undef S_IRWXU
#undef S_IRUSR
#undef S_IWUSR
#undef S_IXUSR
#undef S_IRWXG
#undef S_IRGRP
#undef S_IWGRP
#undef S_IXGRP
#undef S_IRWXO
#undef S_IROTH
#undef S_IWOTH
#undef S_IXOTH
#undef S_ISBLK
#undef S_ISCHR
#undef S_ISDIR
#undef S_ISFIFO
#undef S_ISREG
#undef S_ISUID
#undef S_ISGID
#define stat system_stat
#define fstat system_fstat
#define KERNEL /* Try to avoid misc decls. */
#include "/usr/include/sys/stat.h"
#undef KERNEL
#undef stat
#undef fstat
#define member_same(statbufp, sysbufp, member) \
(offsetof(struct __stat, member) == offsetof(struct system_stat, member) && \
sizeof((statbufp)->member) == sizeof((sysbufp)->member))
#define need_stat_mapping(statbufp, sysbufp) \
(!(member_same(statbufp, sysbufp, st_dev) && \
member_same(statbufp, sysbufp, st_ino) && \
member_same(statbufp, sysbufp, st_mode) && \
member_same(statbufp, sysbufp, st_nlink) && \
member_same(statbufp, sysbufp, st_uid) && \
member_same(statbufp, sysbufp, st_gid) && \
member_same(statbufp, sysbufp, st_rdev) && \
member_same(statbufp, sysbufp, st_size) && \
member_same(statbufp, sysbufp, st_atime) && \
member_same(statbufp, sysbufp, st_mtime) && \
member_same(statbufp, sysbufp, st_ctime) && \
member_same(statbufp, sysbufp, st_blksize) && \
member_same(statbufp, sysbufp, st_blocks)))
/* Map a system `struct stat' to our `struct stat'. */
#ifdef __GNUC__
inline
#endif
static int
DEFUN(mapstat, (sysbuf, statbuf),
CONST struct system_stat *sysbuf AND struct __stat *buf)
{
if (buf == NULL)
{
errno = EINVAL;
return -1;
}
if (!need_stat_mapping(buf, sysbuf))
/* Hopefully this will be optimized out. */
*buf = *(struct __stat *) sysbuf;
else
{
buf->st_dev = (dev_t) sysbuf->st_dev;
buf->st_ino = (ino_t) sysbuf->st_ino;
buf->st_mode = (mode_t) sysbuf->st_mode;
buf->st_nlink = (nlink_t) sysbuf->st_nlink;
buf->st_uid = (uid_t) sysbuf->st_uid;
buf->st_gid = (gid_t) sysbuf->st_gid;
buf->st_rdev = (dev_t) sysbuf->st_rdev;
buf->st_size = (size_t) sysbuf->st_size;
buf->st_atime = (time_t) sysbuf->st_atime;
buf->st_mtime = (time_t) sysbuf->st_mtime;
buf->st_ctime = (time_t) sysbuf->st_ctime;
buf->st_blksize = (size_t) sysbuf->st_blksize;
buf->st_blocks = (size_t) sysbuf->st_blocks;
}
return 0;
}
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