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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved.
37 * @(#)cat.c 8.2 (Berkeley) 4/27/95
38 * $FreeBSD: src/bin/cat/cat.c,v 1.14.2.8 2002/06/29 05:09:26 tjr Exp $
39 * $DragonFly: src/bin/cat/cat.c,v 1.15 2007/02/04 19:27:58 pavalos Exp $
42 #include <sys/param.h>
44 #ifndef NO_UDOM_SUPPORT
45 #include <sys/socket.h>
60 static int bflag, eflag, nflag, sflag, tflag, vflag, rval;
61 static const char *filename;
63 static void scanfiles (char **, int);
64 static void cook_cat (FILE *);
65 static void raw_cat (int);
67 #ifndef NO_UDOM_SUPPORT
68 static int udom_open (const char *path, int flags);
75 "usage: cat [-benstuv] [-] [file ...]\n");
80 main(int argc, char **argv)
84 setlocale(LC_CTYPE, "");
86 while ((ch = getopt(argc, argv, "benstuv")) != -1)
89 bflag = nflag = 1; /* -b implies -n */
92 eflag = vflag = 1; /* -e implies -v */
101 tflag = vflag = 1; /* -t implies -v */
104 setbuf(stdout, NULL);
115 if (bflag || eflag || nflag || sflag || tflag || vflag)
126 scanfiles(char **argv, int cooked)
135 while ((path = argv[i]) != NULL || i == 0) {
136 if (path == NULL || strcmp(path, "-") == 0) {
141 fd = open(path, O_RDONLY);
142 #ifndef NO_UDOM_SUPPORT
143 if (fd < 0 && errno == EOPNOTSUPP)
144 fd = udom_open(path, O_RDONLY);
151 if (fd == STDIN_FILENO) {
154 fp = fdopen(fd, "r");
162 if (fd != STDIN_FILENO)
174 int ch, gobble, line, prev;
176 /* Reset EOF condition on stdin. */
177 if (fp == stdin && feof(stdin))
181 for (prev = '\n'; (ch = getc(fp)) != EOF; prev = ch) {
191 if (nflag && (!bflag || ch != '\n')) {
192 fprintf(stdout, "%6d\t", ++line);
198 if (eflag && putchar('$') == EOF)
200 } else if (ch == '\t') {
202 if (putchar('^') == EOF || putchar('I') == EOF)
207 if (!isascii(ch) && !isprint(ch)) {
208 if (putchar('M') == EOF || putchar('-') == EOF)
213 if (putchar('^') == EOF ||
214 putchar(ch == '\177' ? '?' :
220 if (putchar(ch) == EOF)
224 warn("%s", filename);
240 static struct stat ost;
245 * Figure out the block size to use. Use the larger of stdout vs
246 * the passed descriptor. The minimum blocksize we use is BUFSIZ.
248 if (ost.st_blksize == 0) {
249 if (fstat(STDOUT_FILENO, &ost))
251 if (ost.st_blksize < BUFSIZ)
252 ost.st_blksize = BUFSIZ;
255 * note: rst.st_blksize can be 0, but it is handled ok.
257 if (fstat(rfd, &rst))
258 err(1, "%s", filename);
260 nbsize = MAX(ost.st_blksize, rst.st_blksize);
261 if (bsize != nbsize) {
263 if ((buf = realloc(buf, bsize)) == NULL)
264 err(1, "malloc failed");
266 while ((nr = read(rfd, buf, bsize)) > 0) {
267 for (off = 0; nr; nr -= nw, off += nw) {
268 nw = write(STDOUT_FILENO, buf + off, nr);
274 warn("%s", filename);
279 #ifndef NO_UDOM_SUPPORT
282 udom_open(const char *path, int flags)
284 struct sockaddr_un sou;
288 bzero(&sou, sizeof(sou));
291 * Construct the unix domain socket address and attempt to connect
293 fd = socket(AF_UNIX, SOCK_STREAM, 0);
295 sou.sun_family = AF_UNIX;
296 if ((len = strlcpy(sou.sun_path, path,
297 sizeof(sou.sun_path))) >= sizeof(sou.sun_path)) {
298 errno = ENAMETOOLONG;
301 len = offsetof(struct sockaddr_un, sun_path[len+1]);
303 if (connect(fd, (void *)&sou, len) < 0) {
310 * handle the open flags by shutting down appropriate directions
313 switch (flags & O_ACCMODE) {
315 if (shutdown(fd, SHUT_WR) == -1)
319 if (shutdown(fd, SHUT_RD) == -1)