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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1999 by Sun Microsystems, Inc. 24 * All rights reserved. 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 <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 43 readv(int fd, struct iovec *iov, int iovcnt) 44 { 45 return (bc_readv(fd, iov, iovcnt)); 46 } 47 48 int 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 total += ret; 72 73 to_utmp(iov[i].iov_base, nbuf, ret); 74 75 ret = getmodsize(ret, sizeof (struct utmpx), 76 sizeof (struct compat_utmp)); 77 78 free(nbuf); 79 } 80 return (total); 81 } 82 83 return (_readv(fd, iov, iovcnt)); 84 } 85