1 /* $NetBSD: tee.c,v 1.6 1997/10/20 00:37:11 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)tee.c 8.1 (Berkeley) 6/6/93"; 45 #endif 46 __RCSID("$NetBSD: tee.c,v 1.6 1997/10/20 00:37:11 lukem Exp $"); 47 #endif 48 49 #include <sys/types.h> 50 #include <sys/stat.h> 51 #include <signal.h> 52 #include <errno.h> 53 #include <fcntl.h> 54 #include <unistd.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <locale.h> 59 #include <err.h> 60 61 typedef struct _list { 62 struct _list *next; 63 int fd; 64 char *name; 65 } LIST; 66 LIST *head; 67 68 void add __P((int, char *)); 69 int main __P((int, char **)); 70 71 int 72 main(argc, argv) 73 int argc; 74 char *argv[]; 75 { 76 LIST *p; 77 int n, fd, rval, wval; 78 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, "malloc"); 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, "malloc"); 152 p->fd = fd; 153 p->name = name; 154 p->next = head; 155 head = p; 156 } 157