2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@cybercable.fr>, 1999-2000
9 * Copyright (c) 1980, 1993
10 * The Regents of the University of California. All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 static const char rcsid[] =
43 "$Id: dumprmt.c,v 1.11 2000/01/21 10:17:41 stelian Exp $";
47 #include <sys/types.h>
48 #include <linux/types.h>
50 #include <sys/param.h>
52 #include <sys/socket.h>
55 #include <linux/ext2_fs.h>
56 #include <bsdcompat.h>
60 #include <sys/vnode.h>
62 #include <ufs/inode.h>
64 #include <ufs/ufs/dinode.h>
68 #include <netinet/in.h>
69 #include <netinet/in_systm.h>
70 #include <netinet/ip.h>
71 #include <netinet/tcp.h>
73 #include <protocols/dumprestore.h>
77 #include <compaterr.h>
88 #include <ext2fs/ext2fs.h>
91 #include "pathnames.h"
97 static int rmtstate = TS_CLOSED;
98 static int tormtape = -1;
99 static int fromrmtape = -1;
101 static const char *rmtpeer = 0;
103 static int okname __P((const char *));
104 static int rmtcall __P((const char *, const char *));
105 static void rmtconnaborted __P((int));
106 static int rmtgetb __P((void));
107 static int rmtgetconn __P((void));
108 static void rmtgets __P((char *, size_t));
109 static int rmtreply __P((const char *));
110 static int piped_child __P((const char **command));
112 int krcmd __P((char **, int /*u_short*/, char *, char *, int *, char *));
115 static int errfd = -1;
116 extern int dokerberos;
117 extern int ntrec; /* blocking factor on tape */
123 rmthost(const char *host)
126 free((void *)rmtpeer);
127 if ((rmtpeer = strdup(host)) == NULL)
129 signal(SIGPIPE, rmtconnaborted);
134 rmtconnaborted(int signo)
136 msg("Lost connection to remote host.\n");
145 if (select(errfd + 1, &r, NULL, NULL, &t)) {
149 if ((i = read(errfd, buf, sizeof(buf) - 1)) > 0) {
151 msg("on %s: %s%s", rmtpeer, buf,
152 buf[i - 1] == '\n' ? "" : "\n");
164 register const char *rmt;
165 static struct servent *sp = NULL;
166 static struct passwd *pwd = NULL;
176 if (!rsh && sp == NULL) {
177 sp = getservbyname(dokerberos ? "kshell" : "shell", "tcp");
179 errx(1, "%s/tcp: unknown service",
180 dokerberos ? "kshell" : "shell");
183 pwd = getpwuid(getuid());
185 errx(1, "who are you?");
187 if ((cp = strchr(rmtpeer, '@')) != NULL) {
194 tuser = pwd->pw_name;
195 if ((rmt = getenv("RMT")) == NULL)
200 const char *rshcmd[6];
208 if ((rshpid = piped_child(rshcmd)) < 0) {
209 msg("cannot open connection\n");
214 /* Copy rmtpeer to rmtpeercopy to ignore the
215 return value from rcmd. I cannot figure if
216 this is this a bug in rcmd or in my code... */
217 rmtpeercopy = (char *)rmtpeer;
220 tormtape = krcmd(&rmtpeercopy, sp->s_port, tuser, rmt, &errfd,
224 tormtape = rcmd(&rmtpeercopy, (u_short)sp->s_port, pwd->pw_name,
227 msg("login to %s as %s failed.\n", rmtpeer, tuser);
230 size = ntrec * TP_BSIZE;
231 if (size > 60 * 1024) /* XXX */
233 /* Leave some space for rmt request/response protocol */
235 while (size > TP_BSIZE &&
236 setsockopt(tormtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
238 (void)setsockopt(tormtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
239 throughput = IPTOS_THROUGHPUT;
240 if (setsockopt(tormtape, IPPROTO_IP, IP_TOS,
241 &throughput, sizeof(throughput)) < 0)
242 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
244 if (setsockopt(tormtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
245 perror("TCP_NODELAY setsockopt");
246 fromrmtape = tormtape;
248 (void)fprintf(stderr, "Connection to %s established.\n", rmtpeer);
253 okname(const char *cp0)
255 register const char *cp;
258 for (cp = cp0; *cp; cp++) {
260 if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) {
261 warnx("invalid user name %s\n", cp0);
269 rmtopen(const char *tape, int mode)
271 char buf[MAXPATHLEN];
273 (void)snprintf(buf, sizeof (buf), "O%s\n%d\n", tape, mode);
275 return (rmtcall(tape, buf));
282 if (rmtstate != TS_OPEN)
284 rmtcall("close", "C\n");
285 rmtstate = TS_CLOSED;
289 rmtread(char *buf, size_t count)
295 (void)snprintf(line, sizeof (line), "R%u\n", (unsigned)count);
296 n = rmtcall("read", line);
298 /* rmtcall() properly sets errno for us on errors. */
300 for (i = 0; i < n; i += cc) {
301 cc = read(fromrmtape, buf+i, n - i);
309 rmtwrite(const char *buf, size_t count)
313 (void)snprintf(line, sizeof (line), "W%d\n", count);
314 write(tormtape, line, strlen(line));
315 write(tormtape, buf, count);
316 return (rmtreply("write"));
320 rmtseek(int offset, int pos)
324 (void)snprintf(line, sizeof (line), "L%d\n%d\n", offset, pos);
325 return (rmtcall("seek", line));
336 if (rmtstate != TS_OPEN)
338 rmtcall("status", "S\n");
339 for (i = 0, cp = (char *)&mts; i < sizeof(mts); i++)
345 rmtioctl(int cmd, int count)
351 (void)snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count);
352 return (rmtcall("ioctl", buf));
356 rmtcall(const char *cmd, const char *buf)
359 if (write(tormtape, buf, strlen(buf)) != strlen(buf))
361 return (rmtreply(cmd));
365 rmtreply(const char *cmd)
368 char code[30], emsg[BUFSIZ];
370 rmtgets(code, sizeof (code));
371 if (*code == 'E' || *code == 'F') {
372 rmtgets(emsg, sizeof (emsg));
373 msg("%s: %s", cmd, emsg);
374 errno = atoi(code + 1);
376 rmtstate = TS_CLOSED;
380 /* Kill trailing newline */
381 cp = code + strlen(code);
382 if (cp > code && *--cp == '\n')
385 msg("Protocol to remote tape server botched (code \"%s\").\n",
389 return (atoi(code + 1));
397 if (read(fromrmtape, &c, 1) != 1)
402 /* Get a line (guaranteed to have a trailing newline). */
404 rmtgets(char *line, size_t len)
406 register char *cp = line;
418 msg("Protocol to remote tape server botched.\n");
419 msg("(rmtgets got \"%s\").\n", line);
423 int piped_child(const char **command) {
425 int to_child_pipe[2];
426 int from_child_pipe[2];
428 if (pipe (to_child_pipe) < 0) {
429 msg ("cannot create pipe: %s\n", strerror(errno));
432 if (pipe (from_child_pipe) < 0) {
433 msg ("cannot create pipe: %s\n", strerror(errno));
438 msg ("cannot fork: %s\n", strerror(errno));
442 if (dup2 (to_child_pipe[0], STDIN_FILENO) < 0) {
443 msg ("cannot dup2 pipe: %s\n", strerror(errno));
446 if (close (to_child_pipe[1]) < 0) {
447 msg ("cannot close pipe: %s\n", strerror(errno));
450 if (close (from_child_pipe[0]) < 0) {
451 msg ("cannot close pipe: %s\n", strerror(errno));
454 if (dup2 (from_child_pipe[1], STDOUT_FILENO) < 0) {
455 msg ("cannot dup2 pipe: %s\n", strerror(errno));
458 setpgid(0, getpid());
459 execvp (command[0], (char *const *) command);
460 msg("cannot exec %s: %s\n", command[0], strerror(errno));
463 if (close (to_child_pipe[0]) < 0) {
464 msg ("cannot close pipe: %s\n", strerror(errno));
467 if (close (from_child_pipe[1]) < 0) {
468 msg ("cannot close pipe: %s\n", strerror(errno));
471 tormtape = to_child_pipe[1];
472 fromrmtape = from_child_pipe[0];