1 /* 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)tee.c 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.bin/tee/tee.c,v 1.4 1999/08/28 01:06:21 peter Exp $ 36 * $DragonFly: src/usr.bin/tee/tee.c,v 1.3 2003/10/04 20:36:52 hmp Exp $ 37 */ 38 39 #include <sys/types.h> 40 #include <sys/stat.h> 41 #include <err.h> 42 #include <fcntl.h> 43 #include <signal.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <unistd.h> 48 49 typedef struct _list { 50 struct _list *next; 51 int fd; 52 char *name; 53 } LIST; 54 LIST *head; 55 56 void add(int, char *); 57 static void usage(void); 58 59 int 60 main(int argc, char **argv) 61 { 62 register LIST *p; 63 register int n, fd, rval, wval; 64 register char *bp; 65 int append, ch, exitval; 66 char *buf; 67 #define BSIZE (8 * 1024) 68 69 append = 0; 70 while ((ch = getopt(argc, argv, "ai")) != -1) 71 switch((char)ch) { 72 case 'a': 73 append = 1; 74 break; 75 case 'i': 76 (void)signal(SIGINT, SIG_IGN); 77 break; 78 case '?': 79 default: 80 usage(); 81 } 82 argv += optind; 83 argc -= optind; 84 85 if ((buf = malloc((u_int)BSIZE)) == NULL) 86 errx(1, "malloc"); 87 88 add(STDOUT_FILENO, "stdout"); 89 90 for (exitval = 0; *argv; ++argv) 91 if ((fd = open(*argv, append ? O_WRONLY|O_CREAT|O_APPEND : 92 O_WRONLY|O_CREAT|O_TRUNC, DEFFILEMODE)) < 0) { 93 warn("%s", *argv); 94 exitval = 1; 95 } else 96 add(fd, *argv); 97 98 while ((rval = read(STDIN_FILENO, buf, BSIZE)) > 0) 99 for (p = head; p; p = p->next) { 100 n = rval; 101 bp = buf; 102 do { 103 if ((wval = write(p->fd, bp, n)) == -1) { 104 warn("%s", p->name); 105 exitval = 1; 106 break; 107 } 108 bp += wval; 109 } while (n -= wval); 110 } 111 if (rval < 0) 112 err(1, "read"); 113 exit(exitval); 114 } 115 116 static void 117 usage(void) 118 { 119 (void)fprintf(stderr, "usage: tee [-ai] [file ...]\n"); 120 exit(1); 121 } 122 123 void 124 add(int fd, char *name) 125 { 126 LIST *p; 127 128 if ((p = malloc((u_int)sizeof(LIST))) == NULL) 129 errx(1, "malloc"); 130 p->fd = fd; 131 p->name = name; 132 p->next = head; 133 head = p; 134 } 135