2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved.
33 * @(#)cat.c 8.2 (Berkeley) 4/27/95
34 * $FreeBSD: src/bin/cat/cat.c,v 1.14.2.8 2002/06/29 05:09:26 tjr Exp $
35 * $DragonFly: src/bin/cat/cat.c,v 1.16 2007/02/04 21:06:34 pavalos Exp $
38 #include <sys/param.h>
40 #ifndef NO_UDOM_SUPPORT
41 #include <sys/socket.h>
56 static int bflag, eflag, nflag, sflag, tflag, vflag, rval;
57 static const char *filename;
59 static void scanfiles(char **, int);
60 static void cook_cat(FILE *);
61 static void raw_cat(int);
63 #ifndef NO_UDOM_SUPPORT
64 static int udom_open(const char *, int);
71 "usage: cat [-benstuv] [file ...]\n");
76 main(int argc, char **argv)
80 setlocale(LC_CTYPE, "");
82 while ((ch = getopt(argc, argv, "benstuv")) != -1)
85 bflag = nflag = 1; /* -b implies -n */
88 eflag = vflag = 1; /* -e implies -v */
97 tflag = vflag = 1; /* -t implies -v */
100 setbuf(stdout, NULL);
111 if (bflag || eflag || nflag || sflag || tflag || vflag)
122 scanfiles(char **argv, int cooked)
131 while ((path = argv[i]) != NULL || i == 0) {
132 if (path == NULL || strcmp(path, "-") == 0) {
137 fd = open(path, O_RDONLY);
138 #ifndef NO_UDOM_SUPPORT
139 if (fd < 0 && errno == EOPNOTSUPP)
140 fd = udom_open(path, O_RDONLY);
147 if (fd == STDIN_FILENO) {
150 fp = fdopen(fd, "r");
158 if (fd != STDIN_FILENO)
170 int ch, gobble, line, prev;
172 /* Reset EOF condition on stdin. */
173 if (fp == stdin && feof(stdin))
177 for (prev = '\n'; (ch = getc(fp)) != EOF; prev = ch) {
187 if (nflag && (!bflag || ch != '\n')) {
188 fprintf(stdout, "%6d\t", ++line);
194 if (eflag && putchar('$') == EOF)
196 } else if (ch == '\t') {
198 if (putchar('^') == EOF || putchar('I') == EOF)
203 if (!isascii(ch) && !isprint(ch)) {
204 if (putchar('M') == EOF || putchar('-') == EOF)
209 if (putchar('^') == EOF ||
210 putchar(ch == '\177' ? '?' :
216 if (putchar(ch) == EOF)
220 warn("%s", filename);
235 static struct stat ost;
240 * Figure out the block size to use. Use the larger of stdout vs
241 * the passed descriptor. The minimum blocksize we use is BUFSIZ.
243 if (ost.st_blksize == 0) {
244 if (fstat(STDOUT_FILENO, &ost))
246 if (ost.st_blksize < BUFSIZ)
247 ost.st_blksize = BUFSIZ;
250 * note: rst.st_blksize can be 0, but it is handled ok.
252 if (fstat(rfd, &rst))
253 err(1, "%s", filename);
255 nbsize = MAX(ost.st_blksize, rst.st_blksize);
256 if (bsize != nbsize) {
258 if ((buf = realloc(buf, bsize)) == NULL)
259 err(1, "malloc failed");
261 while ((nr = read(rfd, buf, bsize)) > 0) {
262 for (off = 0; nr; nr -= nw, off += nw) {
263 nw = write(STDOUT_FILENO, buf + off, nr);
269 warn("%s", filename);
274 #ifndef NO_UDOM_SUPPORT
277 udom_open(const char *path, int flags)
279 struct sockaddr_un sou;
283 bzero(&sou, sizeof(sou));
286 * Construct the unix domain socket address and attempt to connect
288 fd = socket(AF_UNIX, SOCK_STREAM, 0);
290 sou.sun_family = AF_UNIX;
291 if ((len = strlcpy(sou.sun_path, path,
292 sizeof(sou.sun_path))) >= sizeof(sou.sun_path)) {
293 errno = ENAMETOOLONG;
296 len = offsetof(struct sockaddr_un, sun_path[len+1]);
298 if (connect(fd, (void *)&sou, len) < 0) {
305 * handle the open flags by shutting down appropriate directions
308 switch (flags & O_ACCMODE) {
310 if (shutdown(fd, SHUT_WR) == -1)
314 if (shutdown(fd, SHUT_RD) == -1)