Annotation of src/usr.bin/tee/tee.c, Revision 1.1.1.1
1.1 deraadt 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: }
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