Compatibility functions for use when __NETBSD_SYSCALLS is defined.

1 files changed, 172 insertions, 0 deletions

diff --git a/lib/libc/sys/netbsd_stat.c b/lib/libc/sys/netbsd_stat.c
new file mode 100644
index 0000000..150c1e8
--- /dev/null
+++ b/lib/libc/sys/netbsd_stat.c
@@ -0,0 +1,172 @@
+/* $Id$
+/*	From: NetBSD: stat.c,v 1.2 1997/10/22 00:56:39 fvdl Exp */
+
+/*
+ * Copyright (c) 1997 Frank van der Linden
+ * All rights reserved.
+ * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed for the NetBSD Project
+ *      by Frank van der Linden
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * These are FreeBSD header files. They do not provide NetBSD structure
+ * definitions or variable types.
+ */
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/*
+ * On systems with 8 byte longs and 4 byte time_ts, padding the time_ts
+ * is required in order to have a consistent ABI.  This is because the
+ * stat structure used to contain timespecs, which had different
+ * alignment constraints than a time_t and a long alone.  The padding
+ * should be removed the next time the stat structure ABI is changed.
+ * (This will happen whever we change to 8 byte time_t.)
+ */
+#if defined(__alpha__)			/* XXX XXX XXX */
+#define	__STATPAD(x)	int x;
+#else
+#define	__STATPAD(x)	/* nothing */
+#endif
+
+/*
+ * This is the new stat structure that NetBSD added for 1.3.
+ * The NetBSD syscalls __stat13, __lstat13 and __fstat13 return
+ * information in this format. The functions in this file convert
+ * that format to the current FreeBSD stat structure. Yuk.
+ */
+struct stat13 {
+	u_int32_t  st_dev;		/* inode's device */
+	u_int32_t  st_ino;		/* inode's number */
+	u_int32_t  st_mode;		/* inode protection mode */
+	u_int32_t  st_nlink;		/* number of hard links */
+	u_int32_t  st_uid;		/* user ID of the file's owner */
+	u_int32_t  st_gid;		/* group ID of the file's group */
+	u_int32_t  st_rdev;		/* device type */
+#ifndef _POSIX_SOURCE
+	struct	  timespec st_atimespec;/* time of last access */
+	struct	  timespec st_mtimespec;/* time of last data modification */
+	struct	  timespec st_ctimespec;/* time of last file status change */
+#else
+	__STATPAD(__pad0)
+	time_t	  st_atime;		/* time of last access */
+	__STATPAD(__pad1)
+	long	  st_atimensec;		/* nsec of last access */
+	time_t	  st_mtime;		/* time of last data modification */
+	__STATPAD(__pad2)
+	long	  st_mtimensec;		/* nsec of last data modification */
+	time_t	  st_ctime;		/* time of last file status change */
+	__STATPAD(__pad3)
+	long	  st_ctimensec;		/* nsec of last file status change */
+#endif
+	u_int64_t st_size;		/* file size, in bytes */
+	int64_t	  st_blocks;		/* blocks allocated for file */
+	u_int32_t st_blksize;		/* optimal blocksize for I/O */
+	u_int32_t st_flags;		/* user defined flags for file */
+	u_int32_t st_gen;		/* file generation number */
+	int64_t	  st_qspare[2];
+};
+
+int     __stat13 __P((const char *, struct stat13 *));
+int     __fstat13 __P((int, struct stat13 *));
+int     __lstat13 __P((const char *, struct stat13 *));
+
+/*
+ * Convert from a NetBSD 1.3 stat to a FreeBSD stat structure.
+ */
+
+static void cvtstat __P((struct stat13 *, struct stat *));
+
+static void
+cvtstat(st, ost)
+	struct stat13 *st;
+	struct stat *ost;
+{
+
+	ost->st_dev = st->st_dev;
+	ost->st_ino = st->st_ino;
+	ost->st_mode = st->st_mode;
+	if (st->st_nlink >= (1 << 15))
+		ost->st_nlink = (1 << 15) - 1;
+	else
+		ost->st_nlink = st->st_nlink;
+	ost->st_uid = st->st_uid;
+	ost->st_gid = st->st_gid;
+	ost->st_rdev = st->st_rdev;
+	ost->st_atimespec = st->st_atimespec;
+	ost->st_mtimespec = st->st_mtimespec;
+	ost->st_ctimespec = st->st_ctimespec;
+	ost->st_size = st->st_size;
+	ost->st_blocks = st->st_blocks;
+	ost->st_blksize = st->st_blksize;
+	ost->st_flags = st->st_flags;
+	ost->st_gen = st->st_gen;
+}
+
+int
+stat(file, ost)
+	const char *file;
+	struct stat *ost;
+{
+	struct stat13 nst;
+	int ret;
+
+	if ((ret = __stat13(file, &nst)) < 0)
+		return ret;
+	cvtstat(&nst, ost);
+	return ret;
+}
+
+int
+fstat(f, ost)
+	int f;
+	struct stat *ost;
+{
+	struct stat13 nst;
+	int ret;
+
+	if ((ret = __fstat13(f, &nst)) < 0)
+		return ret;
+	cvtstat(&nst, ost);
+	return ret;
+}
+
+int
+lstat(file, ost)
+	const char *file;
+	struct stat *ost;
+{
+	struct stat13 nst;
+	int ret;
+
+	if ((ret = __lstat13(file, &nst)) < 0)
+		return ret;
+	cvtstat(&nst, ost);
+	return ret;
+}