Home | History | Annotate | Line # | Download | only in common
vfs_syscalls_12.c revision 1.1 
      1 /*	$NetBSD: vfs_syscalls_12.c,v 1.1 1997/10/10 01:47:02 fvdl Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1989, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  * (c) UNIX System Laboratories, Inc.
      7  * All or some portions of this file are derived from material licensed
      8  * to the University of California by American Telephone and Telegraph
      9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
     10  * the permission of UNIX System Laboratories, Inc.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Berkeley and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  *	From: @(#)vfs_syscalls.c	8.28 (Berkeley) 12/10/94
     41  */
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <sys/namei.h>
     46 #include <sys/filedesc.h>
     47 #include <sys/kernel.h>
     48 #include <sys/file.h>
     49 #include <sys/stat.h>
     50 #include <sys/vnode.h>
     51 #include <sys/mount.h>
     52 #include <sys/proc.h>
     53 #include <sys/uio.h>
     54 #include <sys/malloc.h>
     55 #include <sys/dirent.h>
     56 
     57 #include <sys/syscallargs.h>
     58 
     59 /*
     60  * Read a block of directory entries in a file system independent format.
     61  */
     62 int
     63 compat_12_sys_getdirentries(p, v, retval)
     64 	struct proc *p;
     65 	void *v;
     66 	register_t *retval;
     67 {
     68 	register struct compat_12_sys_getdirentries_args /* {
     69 		syscallarg(int) fd;
     70 		syscallarg(char *) buf;
     71 		syscallarg(u_int) count;
     72 		syscallarg(long *) basep;
     73 	} */ *uap = v;
     74 	struct file *fp;
     75 	int error, done;
     76 	long loff;
     77 
     78 	if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
     79 		return error;
     80 	if ((fp->f_flag & FREAD) == 0)
     81 		return (EBADF);
     82 
     83 	loff = fp->f_offset;
     84 
     85 	error = vn_readdir(fp, SCARG(uap, buf), UIO_USERSPACE,
     86 			SCARG(uap, count), &done, p, 0, 0);
     87 
     88 	error = copyout(&loff, SCARG(uap, basep), sizeof(long));
     89 	*retval = done;
     90 	return error;
     91 }
     92