1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include "../common/compat.h"
30 #include <stdio.h>
31 #include <sys/types.h>
32 #include <unistd.h>
33 #include <sys/syscall.h>
34 #include <sys/uio.h>
35
36 /*
37 * If reading from the utmp file, map the data to the SunOS 4.1
38 * format on the fly.
39 */
40 extern void to_utmp(char *, char *, int);
41
42 int
readv(int fd,struct iovec * iov,int iovcnt)43 readv(int fd, struct iovec *iov, int iovcnt)
44 {
45 return (bc_readv(fd, iov, iovcnt));
46 }
47
48 int
bc_readv(int fd,struct iovec * iov,int iovcnt)49 bc_readv(int fd, struct iovec *iov, int iovcnt)
50 {
51 int ret, off;
52 int i, size, total = 0;
53 char *nbuf;
54
55 if (fd_get(fd) != -1) {
56 for (i = 0; i < iovcnt; i++) {
57 size = getmodsize(iov[i].iov_len,
58 sizeof (struct compat_utmp),
59 sizeof (struct utmpx));
60
61 if ((nbuf = (void *)malloc(size)) == NULL) {
62 fprintf(stderr, "readv: malloc failed\n");
63 exit(-1);
64 }
65
66 if ((ret = _read(fd, nbuf, size)) == -1) {
67 free(nbuf);
68 return (-1);
69 }
70
71 to_utmp(iov[i].iov_base, nbuf, ret);
72
73 ret = getmodsize(ret, sizeof (struct utmpx),
74 sizeof (struct compat_utmp));
75 total += ret;
76
77 free(nbuf);
78 }
79 return (total);
80 }
81
82 return (_readv(fd, iov, iovcnt));
83 }
84