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/uio.h> 34 35 /* 36 * If writing to a utmp-like file, map the utmp structure to 37 * new format on the fly. 38 */ 39 extern int conv2utmpx(char *, char *, int); 40 41 int 42 writev(int fd, struct iovec *iov, int iovcnt) 43 { 44 return (bc_writev(fd, iov, iovcnt)); 45 } 46 47 int 48 bc_writev(int fd, struct iovec *iov, int iovcnt) 49 { 50 int ret, off; 51 int nsize, total = 0; 52 char *nbuf; 53 int i; 54 55 if (fd_get(fd) != -1) { 56 for (i = 0; i < iovcnt; i++) { 57 nsize = getmodsize(iov[i].iov_len, 58 sizeof (struct compat_utmp), 59 sizeof (struct utmpx)); 60 61 if ((nbuf = (void *)malloc(nsize)) == NULL) { 62 fprintf(stderr, "writev: malloc failed\n"); 63 exit(-1); 64 } 65 66 (void) memset(nbuf, 0, nsize); 67 68 ret = conv2utmpx(nbuf, iov[i].iov_base, iov[i].iov_len); 69 70 if ((ret = _write(fd, nbuf, ret)) == -1) { 71 free(nbuf); 72 return (-1); 73 } 74 75 free(nbuf); 76 77 ret = getmodsize(ret, sizeof (struct utmpx), 78 sizeof (struct compat_utmp)); 79 total += ret; 80 } 81 return (total); 82 } 83 84 return (_writev(fd, iov, iovcnt)); 85 } 86