1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate *
4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate * with the License.
8*7c478bd9Sstevel@tonic-gate *
9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate *
14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate *
20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate * Copyright 1994 Sun Microsystems, Inc. All rights reserved.
24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate */
26*7c478bd9Sstevel@tonic-gate
27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*7c478bd9Sstevel@tonic-gate
29*7c478bd9Sstevel@tonic-gate #include <unistd.h>
30*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
31*7c478bd9Sstevel@tonic-gate #include <sys/dirent.h>
32*7c478bd9Sstevel@tonic-gate #include <sys/syscall.h>
33*7c478bd9Sstevel@tonic-gate #include <sys/param.h>
34*7c478bd9Sstevel@tonic-gate #include <sys/errno.h>
35*7c478bd9Sstevel@tonic-gate
36*7c478bd9Sstevel@tonic-gate #define ALIGN 4
37*7c478bd9Sstevel@tonic-gate
38*7c478bd9Sstevel@tonic-gate extern int errno;
39*7c478bd9Sstevel@tonic-gate
40*7c478bd9Sstevel@tonic-gate struct n_dirent{
41*7c478bd9Sstevel@tonic-gate unsigned long d_ino;
42*7c478bd9Sstevel@tonic-gate long d_off;
43*7c478bd9Sstevel@tonic-gate unsigned short d_reclen;
44*7c478bd9Sstevel@tonic-gate char d_name[1];
45*7c478bd9Sstevel@tonic-gate };
46*7c478bd9Sstevel@tonic-gate
47*7c478bd9Sstevel@tonic-gate
getdents(fd,buf,bytes)48*7c478bd9Sstevel@tonic-gate int getdents(fd, buf, bytes)
49*7c478bd9Sstevel@tonic-gate int fd;
50*7c478bd9Sstevel@tonic-gate char *buf;
51*7c478bd9Sstevel@tonic-gate int bytes;
52*7c478bd9Sstevel@tonic-gate {
53*7c478bd9Sstevel@tonic-gate return(bc_getdents(fd, buf, bytes));
54*7c478bd9Sstevel@tonic-gate }
55*7c478bd9Sstevel@tonic-gate
56*7c478bd9Sstevel@tonic-gate
bc_getdents(fd,buf,bytes)57*7c478bd9Sstevel@tonic-gate int bc_getdents(fd, buf, bytes)
58*7c478bd9Sstevel@tonic-gate int fd;
59*7c478bd9Sstevel@tonic-gate char *buf;
60*7c478bd9Sstevel@tonic-gate int bytes;
61*7c478bd9Sstevel@tonic-gate {
62*7c478bd9Sstevel@tonic-gate int ret, nbytes;
63*7c478bd9Sstevel@tonic-gate char *nbuf;
64*7c478bd9Sstevel@tonic-gate struct dirent *dir;
65*7c478bd9Sstevel@tonic-gate struct n_dirent *ndir;
66*7c478bd9Sstevel@tonic-gate int count=0;
67*7c478bd9Sstevel@tonic-gate off_t last_off;
68*7c478bd9Sstevel@tonic-gate
69*7c478bd9Sstevel@tonic-gate if (buf == (char *)0 || buf == (char *)-1) {
70*7c478bd9Sstevel@tonic-gate errno = EFAULT;
71*7c478bd9Sstevel@tonic-gate return(-1);
72*7c478bd9Sstevel@tonic-gate }
73*7c478bd9Sstevel@tonic-gate
74*7c478bd9Sstevel@tonic-gate nbytes = bytes; /* buffer can only be as large as user expects */
75*7c478bd9Sstevel@tonic-gate
76*7c478bd9Sstevel@tonic-gate if ((nbuf = (char *)malloc(nbytes)) == NULL) {
77*7c478bd9Sstevel@tonic-gate return(-1);
78*7c478bd9Sstevel@tonic-gate }
79*7c478bd9Sstevel@tonic-gate
80*7c478bd9Sstevel@tonic-gate if ((ret = _syscall(SYS_getdents, fd, nbuf, nbytes)) == -1) {
81*7c478bd9Sstevel@tonic-gate free(nbuf);
82*7c478bd9Sstevel@tonic-gate return(ret);
83*7c478bd9Sstevel@tonic-gate }
84*7c478bd9Sstevel@tonic-gate
85*7c478bd9Sstevel@tonic-gate
86*7c478bd9Sstevel@tonic-gate dir = (struct dirent *)buf;
87*7c478bd9Sstevel@tonic-gate ndir = (struct n_dirent *)nbuf; /* source directory format */
88*7c478bd9Sstevel@tonic-gate
89*7c478bd9Sstevel@tonic-gate while ((((int)(((char *)dir) + sizeof(struct n_dirent) +
90*7c478bd9Sstevel@tonic-gate strlen(ndir->d_name) + ALIGN) & ~(ALIGN - 1)) <
91*7c478bd9Sstevel@tonic-gate (int)(buf + bytes)) &&
92*7c478bd9Sstevel@tonic-gate ((char *)ndir + sizeof(struct n_dirent) <= (nbuf + ret))) {
93*7c478bd9Sstevel@tonic-gate dir->d_off = ndir->d_off;
94*7c478bd9Sstevel@tonic-gate dir->d_fileno = ndir->d_ino; /* NOT VALID */
95*7c478bd9Sstevel@tonic-gate dir->d_namlen = strlen(ndir->d_name);
96*7c478bd9Sstevel@tonic-gate dir->d_reclen = (short)((sizeof(struct dirent) - MAXNAMLEN +
97*7c478bd9Sstevel@tonic-gate dir->d_namlen + ALIGN) & -ALIGN);
98*7c478bd9Sstevel@tonic-gate strncpy(dir->d_name, ndir->d_name, dir->d_namlen);
99*7c478bd9Sstevel@tonic-gate dir->d_name[dir->d_namlen] = '\0';
100*7c478bd9Sstevel@tonic-gate count += dir->d_reclen;
101*7c478bd9Sstevel@tonic-gate last_off = ndir->d_off;
102*7c478bd9Sstevel@tonic-gate dir = (struct dirent *)((char *)dir +
103*7c478bd9Sstevel@tonic-gate ((int)( dir->d_reclen)));
104*7c478bd9Sstevel@tonic-gate ndir = (struct n_dirent *)((char *)ndir +
105*7c478bd9Sstevel@tonic-gate ((int)(ndir->d_reclen)));
106*7c478bd9Sstevel@tonic-gate }
107*7c478bd9Sstevel@tonic-gate
108*7c478bd9Sstevel@tonic-gate /*
109*7c478bd9Sstevel@tonic-gate * Seek to the next entry in the directory. If all entries
110*7c478bd9Sstevel@tonic-gate * in ndir were not copied to dir, the next getdents syscall
111*7c478bd9Sstevel@tonic-gate * will start reading from there.
112*7c478bd9Sstevel@tonic-gate */
113*7c478bd9Sstevel@tonic-gate (void)lseek(fd, last_off, SEEK_SET);
114*7c478bd9Sstevel@tonic-gate free(nbuf);
115*7c478bd9Sstevel@tonic-gate return(count);
116*7c478bd9Sstevel@tonic-gate }
117