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173 lines
5.4 KiB
C
173 lines
5.4 KiB
C
/* $Id$
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/* From: NetBSD: stat.c,v 1.2 1997/10/22 00:56:39 fvdl Exp */
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/*
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* Copyright (c) 1997 Frank van der Linden
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* All rights reserved.
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* Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project
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* by Frank van der Linden
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* These are FreeBSD header files. They do not provide NetBSD structure
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* definitions or variable types.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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/*
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* On systems with 8 byte longs and 4 byte time_ts, padding the time_ts
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* is required in order to have a consistent ABI. This is because the
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* stat structure used to contain timespecs, which had different
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* alignment constraints than a time_t and a long alone. The padding
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* should be removed the next time the stat structure ABI is changed.
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* (This will happen whever we change to 8 byte time_t.)
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*/
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#if defined(__alpha__) /* XXX XXX XXX */
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#define __STATPAD(x) int x;
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#else
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#define __STATPAD(x) /* nothing */
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#endif
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/*
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* This is the new stat structure that NetBSD added for 1.3.
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* The NetBSD syscalls __stat13, __lstat13 and __fstat13 return
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* information in this format. The functions in this file convert
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* that format to the current FreeBSD stat structure. Yuk.
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*/
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struct stat13 {
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u_int32_t st_dev; /* inode's device */
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u_int32_t st_ino; /* inode's number */
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u_int32_t st_mode; /* inode protection mode */
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u_int32_t st_nlink; /* number of hard links */
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u_int32_t st_uid; /* user ID of the file's owner */
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u_int32_t st_gid; /* group ID of the file's group */
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u_int32_t st_rdev; /* device type */
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#ifndef _POSIX_SOURCE
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struct timespec st_atimespec;/* time of last access */
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struct timespec st_mtimespec;/* time of last data modification */
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struct timespec st_ctimespec;/* time of last file status change */
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#else
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__STATPAD(__pad0)
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time_t st_atime; /* time of last access */
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__STATPAD(__pad1)
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long st_atimensec; /* nsec of last access */
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time_t st_mtime; /* time of last data modification */
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__STATPAD(__pad2)
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long st_mtimensec; /* nsec of last data modification */
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time_t st_ctime; /* time of last file status change */
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__STATPAD(__pad3)
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long st_ctimensec; /* nsec of last file status change */
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#endif
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u_int64_t st_size; /* file size, in bytes */
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int64_t st_blocks; /* blocks allocated for file */
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u_int32_t st_blksize; /* optimal blocksize for I/O */
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u_int32_t st_flags; /* user defined flags for file */
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u_int32_t st_gen; /* file generation number */
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int64_t st_qspare[2];
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};
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int __stat13 __P((const char *, struct stat13 *));
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int __fstat13 __P((int, struct stat13 *));
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int __lstat13 __P((const char *, struct stat13 *));
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/*
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* Convert from a NetBSD 1.3 stat to a FreeBSD stat structure.
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*/
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static void cvtstat __P((struct stat13 *, struct stat *));
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static void
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cvtstat(st, ost)
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struct stat13 *st;
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struct stat *ost;
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{
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ost->st_dev = st->st_dev;
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ost->st_ino = st->st_ino;
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ost->st_mode = st->st_mode;
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if (st->st_nlink >= (1 << 15))
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ost->st_nlink = (1 << 15) - 1;
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else
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ost->st_nlink = st->st_nlink;
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ost->st_uid = st->st_uid;
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ost->st_gid = st->st_gid;
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ost->st_rdev = st->st_rdev;
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ost->st_atimespec = st->st_atimespec;
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ost->st_mtimespec = st->st_mtimespec;
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ost->st_ctimespec = st->st_ctimespec;
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ost->st_size = st->st_size;
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ost->st_blocks = st->st_blocks;
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ost->st_blksize = st->st_blksize;
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ost->st_flags = st->st_flags;
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ost->st_gen = st->st_gen;
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}
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int
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stat(file, ost)
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const char *file;
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struct stat *ost;
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{
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struct stat13 nst;
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int ret;
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if ((ret = __stat13(file, &nst)) < 0)
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return ret;
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cvtstat(&nst, ost);
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return ret;
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}
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int
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fstat(f, ost)
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int f;
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struct stat *ost;
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{
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struct stat13 nst;
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int ret;
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if ((ret = __fstat13(f, &nst)) < 0)
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return ret;
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cvtstat(&nst, ost);
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return ret;
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}
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int
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lstat(file, ost)
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const char *file;
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struct stat *ost;
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{
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struct stat13 nst;
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int ret;
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if ((ret = __lstat13(file, &nst)) < 0)
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return ret;
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cvtstat(&nst, ost);
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return ret;
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}
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