1 /* $OpenBSD: tee.c,v 1.2 1996/06/26 05:40:32 deraadt Exp $ */ 2 /* $NetBSD: tee.c,v 1.5 1994/12/09 01:43:39 jtc Exp $ */ 3 4 /* 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static char copyright[] = 39 "@(#) Copyright (c) 1988, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)tee.c 8.1 (Berkeley) 6/6/93"; 46 #endif 47 static char rcsid[] = "$OpenBSD: tee.c,v 1.2 1996/06/26 05:40:32 deraadt Exp $"; 48 #endif 49 50 #include <sys/types.h> 51 #include <sys/stat.h> 52 #include <signal.h> 53 #include <errno.h> 54 #include <fcntl.h> 55 #include <unistd.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <locale.h> 60 #include <err.h> 61 62 typedef struct _list { 63 struct _list *next; 64 int fd; 65 char *name; 66 } LIST; 67 LIST *head; 68 69 void add __P((int, char *)); 70 71 int 72 main(argc, argv) 73 int argc; 74 char *argv[]; 75 { 76 register LIST *p; 77 register int n, fd, rval, wval; 78 register char *bp; 79 int append, ch, exitval; 80 char *buf; 81 #define BSIZE (8 * 1024) 82 83 setlocale(LC_ALL, ""); 84 85 append = 0; 86 while ((ch = getopt(argc, argv, "ai")) != -1) 87 switch((char)ch) { 88 case 'a': 89 append = 1; 90 break; 91 case 'i': 92 (void)signal(SIGINT, SIG_IGN); 93 break; 94 case '?': 95 default: 96 (void)fprintf(stderr, "usage: tee [-ai] [file ...]\n"); 97 exit(1); 98 } 99 argv += optind; 100 argc -= optind; 101 102 if ((buf = malloc((size_t)BSIZE)) == NULL) 103 err(1, NULL); 104 105 add(STDOUT_FILENO, "stdout"); 106 107 for (exitval = 0; *argv; ++argv) 108 if ((fd = open(*argv, append ? O_WRONLY|O_CREAT|O_APPEND : 109 O_WRONLY|O_CREAT|O_TRUNC, DEFFILEMODE)) < 0) { 110 warn("%s", *argv); 111 exitval = 1; 112 } else 113 add(fd, *argv); 114 115 while ((rval = read(STDIN_FILENO, buf, BSIZE)) > 0) 116 for (p = head; p; p = p->next) { 117 n = rval; 118 bp = buf; 119 do { 120 if ((wval = write(p->fd, bp, n)) == -1) { 121 warn("%s", p->name); 122 exitval = 1; 123 break; 124 } 125 bp += wval; 126 } while (n -= wval); 127 } 128 if (rval < 0) { 129 warn("read"); 130 exitval = 1; 131 } 132 133 for (p = head; p; p = p->next) { 134 if (close(p->fd) == -1) { 135 warn("%s", p->name); 136 exitval = 1; 137 } 138 } 139 140 exit(exitval); 141 } 142 143 void 144 add(fd, name) 145 int fd; 146 char *name; 147 { 148 LIST *p; 149 150 if ((p = malloc((size_t)sizeof(LIST))) == NULL) 151 err(1, NULL); 152 p->fd = fd; 153 p->name = name; 154 p->next = head; 155 head = p; 156 } 157