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/errno.h> 32 #include <sys/types.h> 33 #include <unistd.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 errno; 40 41 extern int conv2utmp(char *, char *, int); 42 extern int conv2utmpx(char *, char *, int); 43 44 int 45 write(int fd, char *buf, int size) 46 { 47 return (bc_write(fd, buf, size)); 48 } 49 50 int 51 bc_write(int fd, char *buf, int size) 52 { 53 int ret, off; 54 int nsize; 55 char *nbuf; 56 57 if (fd_get(fd) != -1) { /* writing utmp (utmpx actually) */ 58 nsize = getmodsize(size, sizeof (struct compat_utmp), 59 sizeof (struct utmpx)); 60 61 if ((nbuf = (void *)malloc(nsize)) == NULL) { 62 (void) fprintf(stderr, "write: malloc failed\n"); 63 exit(-1); 64 } 65 66 (void) memset(nbuf, 0, nsize); 67 68 ret = conv2utmpx(nbuf, buf, size); 69 70 if ((ret = _write(fd, nbuf, ret)) == -1) { 71 if (errno == EAGAIN) 72 errno = EWOULDBLOCK; 73 free(nbuf); 74 return (-1); 75 } 76 77 free(nbuf); 78 79 ret = getmodsize(ret, sizeof (struct utmpx), 80 sizeof (struct compat_utmp)); 81 82 return (ret); 83 } 84 85 if ((ret = _write(fd, buf, size)) == -1) { 86 if (errno == EAGAIN) 87 errno = EWOULDBLOCK; 88 } 89 return (ret); 90 91 } 92 93 /* From SunOS/SVR4 utmp.h */ 94 #define USER_PROCESS 7 95 #define DEAD_PROCESS 8 96 97 extern int 98 conv2utmpx(char *nbuf, char *buf, int len) 99 { 100 struct compat_utmp *ut; 101 struct utmpx *utx; 102 103 utx = (struct utmpx *) nbuf; 104 ut = (struct compat_utmp *) buf; 105 106 while ((char *)ut < (buf + len)) { 107 (void) strcpy(utx->ut_user, ut->ut_name); 108 (void) memset(utx->ut_id, 0, sizeof (utx->ut_id)); 109 (void) strcpy(utx->ut_line, ut->ut_line); 110 utx->ut_pid = 0; 111 if ((strcmp(utx->ut_user, "") == 0) && 112 (strcmp(utx->ut_host, "") == 0)) 113 utx->ut_type = DEAD_PROCESS; 114 else 115 utx->ut_type = USER_PROCESS; 116 utx->ut_exit.e_termination = 0; 117 utx->ut_exit.e_exit = 0; 118 utx->ut_tv.tv_sec = ut->ut_time; 119 utx->ut_tv.tv_usec = 0; 120 utx->ut_session = 0; 121 utx->ut_syslen = sizeof (ut->ut_name) + 1; 122 (void) strcpy(utx->ut_host, ut->ut_host); 123 ut++; 124 utx++; 125 } 126 return ((char *) utx - nbuf); 127 } 128