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 1.2 2003/06/17 04:29:32 dillon 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 __P((int, char *)); 57 static void usage __P((void)); 58 59 int 60 main(argc, argv) 61 int argc; 62 char *argv[]; 63 { 64 register LIST *p; 65 register int n, fd, rval, wval; 66 register char *bp; 67 int append, ch, exitval; 68 char *buf; 69 #define BSIZE (8 * 1024) 70 71 append = 0; 72 while ((ch = getopt(argc, argv, "ai")) != -1) 73 switch((char)ch) { 74 case 'a': 75 append = 1; 76 break; 77 case 'i': 78 (void)signal(SIGINT, SIG_IGN); 79 break; 80 case '?': 81 default: 82 usage(); 83 } 84 argv += optind; 85 argc -= optind; 86 87 if ((buf = malloc((u_int)BSIZE)) == NULL) 88 errx(1, "malloc"); 89 90 add(STDOUT_FILENO, "stdout"); 91 92 for (exitval = 0; *argv; ++argv) 93 if ((fd = open(*argv, append ? O_WRONLY|O_CREAT|O_APPEND : 94 O_WRONLY|O_CREAT|O_TRUNC, DEFFILEMODE)) < 0) { 95 warn("%s", *argv); 96 exitval = 1; 97 } else 98 add(fd, *argv); 99 100 while ((rval = read(STDIN_FILENO, buf, BSIZE)) > 0) 101 for (p = head; p; p = p->next) { 102 n = rval; 103 bp = buf; 104 do { 105 if ((wval = write(p->fd, bp, n)) == -1) { 106 warn("%s", p->name); 107 exitval = 1; 108 break; 109 } 110 bp += wval; 111 } while (n -= wval); 112 } 113 if (rval < 0) 114 err(1, "read"); 115 exit(exitval); 116 } 117 118 static void 119 usage() 120 { 121 (void)fprintf(stderr, "usage: tee [-ai] [file ...]\n"); 122 exit(1); 123 } 124 125 void 126 add(fd, name) 127 int fd; 128 char *name; 129 { 130 LIST *p; 131 132 if ((p = malloc((u_int)sizeof(LIST))) == NULL) 133 errx(1, "malloc"); 134 p->fd = fd; 135 p->name = name; 136 p->next = head; 137 head = p; 138 } 139