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 * 4. 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
35 static char const copyright[] =
36 "@(#) Copyright (c) 1989, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
43 static char sccsid[] = "@(#)cat.c 8.2 (Berkeley) 4/27/95";
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
49 #include <sys/param.h>
51 #ifndef NO_UDOM_SUPPORT
52 #include <sys/socket.h>
67 int bflag, eflag, nflag, sflag, tflag, vflag;
71 static void usage(void);
72 static void scanfiles(char *argv[], int cooked);
73 static void cook_cat(FILE *);
74 static void raw_cat(int);
76 #ifndef NO_UDOM_SUPPORT
77 static int udom_open(const char *path, int flags);
81 main(int argc, char *argv[])
85 setlocale(LC_CTYPE, "");
87 while ((ch = getopt(argc, argv, "benstuv")) != -1)
90 bflag = nflag = 1; /* -b implies -n */
93 eflag = vflag = 1; /* -e implies -v */
102 tflag = vflag = 1; /* -t implies -v */
105 setbuf(stdout, NULL);
115 if (bflag || eflag || nflag || sflag || tflag || vflag)
128 fprintf(stderr, "usage: cat [-benstuv] [file ...]\n");
134 scanfiles(char *argv[], int cooked)
140 while ((path = argv[i]) != NULL || i == 0) {
143 if (path == NULL || strcmp(path, "-") == 0) {
148 fd = open(path, O_RDONLY);
149 #ifndef NO_UDOM_SUPPORT
150 if (fd < 0 && errno == EOPNOTSUPP)
151 fd = udom_open(path, O_RDONLY);
158 if (fd == STDIN_FILENO)
161 fp = fdopen(fd, "r");
167 if (fd != STDIN_FILENO)
179 int ch, gobble, line, prev;
181 /* Reset EOF condition on stdin. */
182 if (fp == stdin && feof(stdin))
186 for (prev = '\n'; (ch = getc(fp)) != EOF; prev = ch) {
196 if (nflag && (!bflag || ch != '\n')) {
197 (void)fprintf(stdout, "%6d\t", ++line);
203 if (eflag && putchar('$') == EOF)
205 } else if (ch == '\t') {
207 if (putchar('^') == EOF || putchar('I') == EOF)
212 if (!isascii(ch) && !isprint(ch)) {
213 if (putchar('M') == EOF || putchar('-') == EOF)
218 if (putchar('^') == EOF ||
219 putchar(ch == '\177' ? '?' :
225 if (putchar(ch) == EOF)
229 warn("%s", filename);
243 static char *buf = NULL;
246 wfd = fileno(stdout);
248 if (fstat(wfd, &sbuf))
249 err(1, "%s", filename);
250 bsize = MAX(sbuf.st_blksize, 1024);
251 if ((buf = malloc(bsize)) == NULL)
254 while ((nr = read(rfd, buf, bsize)) > 0)
255 for (off = 0; nr; nr -= nw, off += nw)
256 if ((nw = write(wfd, buf + off, (size_t)nr)) < 0)
259 warn("%s", filename);
264 #ifndef NO_UDOM_SUPPORT
267 udom_open(const char *path, int flags)
269 struct sockaddr_un sou;
273 bzero(&sou, sizeof(sou));
276 * Construct the unix domain socket address and attempt to connect
278 fd = socket(AF_UNIX, SOCK_STREAM, 0);
280 sou.sun_family = AF_UNIX;
281 if ((len = strlcpy(sou.sun_path, path,
282 sizeof(sou.sun_path))) >= sizeof(sou.sun_path)) {
283 errno = ENAMETOOLONG;
286 len = offsetof(struct sockaddr_un, sun_path[len+1]);
288 if (connect(fd, (void *)&sou, len) < 0) {
295 * handle the open flags by shutting down appropriate directions
298 switch(flags & O_ACCMODE) {
300 if (shutdown(fd, SHUT_WR) == -1)
304 if (shutdown(fd, SHUT_RD) == -1)