1 /* $NetBSD: tee.c,v 1.5 1994/12/09 01:43:39 jtc 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 #ifndef lint 37 static char copyright[] = 38 "@(#) 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 static char rcsid[] = "$NetBSD: tee.c,v 1.5 1994/12/09 01:43:39 jtc 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 70 int 71 main(argc, argv) 72 int argc; 73 char *argv[]; 74 { 75 register LIST *p; 76 register int n, fd, rval, wval; 77 register char *bp; 78 int append, ch, exitval; 79 char *buf; 80 #define BSIZE (8 * 1024) 81 82 setlocale(LC_ALL, ""); 83 84 append = 0; 85 while ((ch = getopt(argc, argv, "ai")) != -1) 86 switch((char)ch) { 87 case 'a': 88 append = 1; 89 break; 90 case 'i': 91 (void)signal(SIGINT, SIG_IGN); 92 break; 93 case '?': 94 default: 95 (void)fprintf(stderr, "usage: tee [-ai] [file ...]\n"); 96 exit(1); 97 } 98 argv += optind; 99 argc -= optind; 100 101 if ((buf = malloc((size_t)BSIZE)) == NULL) 102 err(1, NULL); 103 104 add(STDOUT_FILENO, "stdout"); 105 106 for (exitval = 0; *argv; ++argv) 107 if ((fd = open(*argv, append ? O_WRONLY|O_CREAT|O_APPEND : 108 O_WRONLY|O_CREAT|O_TRUNC, DEFFILEMODE)) < 0) { 109 warn("%s", *argv); 110 exitval = 1; 111 } else 112 add(fd, *argv); 113 114 while ((rval = read(STDIN_FILENO, buf, BSIZE)) > 0) 115 for (p = head; p; p = p->next) { 116 n = rval; 117 bp = buf; 118 do { 119 if ((wval = write(p->fd, bp, n)) == -1) { 120 warn("%s", p->name); 121 exitval = 1; 122 break; 123 } 124 bp += wval; 125 } while (n -= wval); 126 } 127 if (rval < 0) { 128 warn("read"); 129 exitval = 1; 130 } 131 132 for (p = head; p; p = p->next) { 133 if (close(p->fd) == -1) { 134 warn("%s", p->name); 135 exitval = 1; 136 } 137 } 138 139 exit(exitval); 140 } 141 142 void 143 add(fd, name) 144 int fd; 145 char *name; 146 { 147 LIST *p; 148 149 if ((p = malloc((size_t)sizeof(LIST))) == NULL) 150 err(1, NULL); 151 p->fd = fd; 152 p->name = name; 153 p->next = head; 154 head = p; 155 } 156