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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1994 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <unistd.h>
#include <sys/types.h>
#include <sys/dirent.h>
#include <sys/syscall.h>
#include <sys/param.h>
#include <sys/errno.h>
#define ALIGN 4
extern int errno;
struct n_dirent{
unsigned long d_ino;
long d_off;
unsigned short d_reclen;
char d_name[1];
};
int getdents(fd, buf, bytes)
int fd;
char *buf;
int bytes;
{
return(bc_getdents(fd, buf, bytes));
}
int bc_getdents(fd, buf, bytes)
int fd;
char *buf;
int bytes;
{
int ret, nbytes;
char *nbuf;
struct dirent *dir;
struct n_dirent *ndir;
int count=0;
off_t last_off;
if (buf == (char *)0 || buf == (char *)-1) {
errno = EFAULT;
return(-1);
}
nbytes = bytes; /* buffer can only be as large as user expects */
if ((nbuf = (char *)malloc(nbytes)) == NULL) {
return(-1);
}
if ((ret = _syscall(SYS_getdents, fd, nbuf, nbytes)) == -1) {
free(nbuf);
return(ret);
}
dir = (struct dirent *)buf;
ndir = (struct n_dirent *)nbuf; /* source directory format */
while ((((int)(((char *)dir) + sizeof(struct n_dirent) +
strlen(ndir->d_name) + ALIGN) & ~(ALIGN - 1)) <
(int)(buf + bytes)) &&
((char *)ndir + sizeof(struct n_dirent) <= (nbuf + ret))) {
dir->d_off = ndir->d_off;
dir->d_fileno = ndir->d_ino; /* NOT VALID */
dir->d_namlen = strlen(ndir->d_name);
dir->d_reclen = (short)((sizeof(struct dirent) - MAXNAMLEN +
dir->d_namlen + ALIGN) & -ALIGN);
strncpy(dir->d_name, ndir->d_name, dir->d_namlen);
dir->d_name[dir->d_namlen] = '\0';
count += dir->d_reclen;
last_off = ndir->d_off;
dir = (struct dirent *)((char *)dir +
((int)( dir->d_reclen)));
ndir = (struct n_dirent *)((char *)ndir +
((int)(ndir->d_reclen)));
}
/*
* Seek to the next entry in the directory. If all entries
* in ndir were not copied to dir, the next getdents syscall
* will start reading from there.
*/
(void)lseek(fd, last_off, SEEK_SET);
free(nbuf);
return(count);
}
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