]>
git.wh0rd.org - dump.git/blob - common/dumprmt.c
db18d328547cb717a37cc586b04b950d68313c62
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
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 1.7 1999/10/30 22:55:50 tiniou 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;
100 static const char *rmtpeer
= 0;
102 static int okname
__P((const char *));
103 static int rmtcall
__P((const char *, const char *));
104 static void rmtconnaborted
__P((int));
105 static int rmtgetb
__P((void));
106 static int rmtgetconn
__P((void));
107 static void rmtgets
__P((char *, size_t));
108 static int rmtreply
__P((const char *));
109 static int piped_child
__P((const char **command
));
111 int krcmd
__P((char **, int /*u_short*/, char *, char *, int *, char *));
114 static int errfd
= -1;
115 extern int dokerberos
;
116 extern int ntrec
; /* blocking factor on tape */
122 rmthost(const char *host
)
125 free((void *)rmtpeer
);
126 if ((rmtpeer
= strdup(host
)) == NULL
)
128 signal(SIGPIPE
, rmtconnaborted
);
133 rmtconnaborted(int signo
)
135 msg("Lost connection to remote host.\n");
144 if (select(errfd
+ 1, &r
, NULL
, NULL
, &t
)) {
148 if ((i
= read(errfd
, buf
, sizeof(buf
) - 1)) > 0) {
150 msg("on %s: %s%s", rmtpeer
, buf
,
151 buf
[i
- 1] == '\n' ? "" : "\n");
163 register const char *rmt
;
164 static struct servent
*sp
= NULL
;
165 static struct passwd
*pwd
= NULL
;
174 if (!rsh
&& sp
== NULL
) {
175 sp
= getservbyname(dokerberos
? "kshell" : "shell", "tcp");
177 errx(1, "%s/tcp: unknown service",
178 dokerberos
? "kshell" : "shell");
181 pwd
= getpwuid(getuid());
183 errx(1, "who are you?");
185 if ((cp
= strchr(rmtpeer
, '@')) != NULL
) {
192 tuser
= pwd
->pw_name
;
193 if ((rmt
= getenv("RMT")) == NULL
)
198 const char *rshcmd
[6];
206 if (piped_child(rshcmd
) < 0) {
207 msg("cannot open connection\n");
214 tormtape
= krcmd((char **)&rmtpeer
, sp
->s_port
, tuser
, rmt
, &errfd
,
218 tormtape
= rcmd((char **)&rmtpeer
, (u_short
)sp
->s_port
, pwd
->pw_name
,
221 msg("login to %s as %s failed.\n", rmtpeer
, tuser
);
224 size
= ntrec
* TP_BSIZE
;
225 if (size
> 60 * 1024) /* XXX */
227 /* Leave some space for rmt request/response protocol */
229 while (size
> TP_BSIZE
&&
230 setsockopt(tormtape
, SOL_SOCKET
, SO_SNDBUF
, &size
, sizeof (size
)) < 0)
232 (void)setsockopt(tormtape
, SOL_SOCKET
, SO_RCVBUF
, &size
, sizeof (size
));
233 throughput
= IPTOS_THROUGHPUT
;
234 if (setsockopt(tormtape
, IPPROTO_IP
, IP_TOS
,
235 &throughput
, sizeof(throughput
)) < 0)
236 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
238 if (setsockopt(tormtape
, IPPROTO_TCP
, TCP_NODELAY
, &on
, sizeof (on
)) < 0)
239 perror("TCP_NODELAY setsockopt");
240 fromrmtape
= tormtape
;
242 (void)fprintf(stderr
, "Connection to %s established.\n", rmtpeer
);
247 okname(const char *cp0
)
249 register const char *cp
;
252 for (cp
= cp0
; *cp
; cp
++) {
254 if (!isascii(c
) || !(isalnum(c
) || c
== '_' || c
== '-')) {
255 warnx("invalid user name %s\n", cp0
);
263 rmtopen(const char *tape
, int mode
)
265 char buf
[MAXPATHLEN
];
267 (void)snprintf(buf
, sizeof (buf
), "O%s\n%d\n", tape
, mode
);
269 return (rmtcall(tape
, buf
));
276 if (rmtstate
!= TS_OPEN
)
278 rmtcall("close", "C\n");
279 rmtstate
= TS_CLOSED
;
283 rmtread(char *buf
, size_t count
)
289 (void)snprintf(line
, sizeof (line
), "R%u\n", (unsigned)count
);
290 n
= rmtcall("read", line
);
292 /* rmtcall() properly sets errno for us on errors. */
294 for (i
= 0; i
< n
; i
+= cc
) {
295 cc
= read(fromrmtape
, buf
+i
, n
- i
);
303 rmtwrite(const char *buf
, size_t count
)
307 (void)snprintf(line
, sizeof (line
), "W%d\n", count
);
308 write(tormtape
, line
, strlen(line
));
309 write(tormtape
, buf
, count
);
310 return (rmtreply("write"));
314 rmtseek(int offset
, int pos
)
318 (void)snprintf(line
, sizeof (line
), "L%d\n%d\n", offset
, pos
);
319 return (rmtcall("seek", line
));
330 if (rmtstate
!= TS_OPEN
)
332 rmtcall("status", "S\n");
333 for (i
= 0, cp
= (char *)&mts
; i
< sizeof(mts
); i
++)
339 rmtioctl(int cmd
, int count
)
345 (void)snprintf(buf
, sizeof (buf
), "I%d\n%d\n", cmd
, count
);
346 return (rmtcall("ioctl", buf
));
350 rmtcall(const char *cmd
, const char *buf
)
353 if (write(tormtape
, buf
, strlen(buf
)) != strlen(buf
))
355 return (rmtreply(cmd
));
359 rmtreply(const char *cmd
)
362 char code
[30], emsg
[BUFSIZ
];
364 rmtgets(code
, sizeof (code
));
365 if (*code
== 'E' || *code
== 'F') {
366 rmtgets(emsg
, sizeof (emsg
));
367 msg("%s: %s", cmd
, emsg
);
368 errno
= atoi(code
+ 1);
370 rmtstate
= TS_CLOSED
;
374 /* Kill trailing newline */
375 cp
= code
+ strlen(code
);
376 if (cp
> code
&& *--cp
== '\n')
379 msg("Protocol to remote tape server botched (code \"%s\").\n",
383 return (atoi(code
+ 1));
391 if (read(fromrmtape
, &c
, 1) != 1)
396 /* Get a line (guaranteed to have a trailing newline). */
398 rmtgets(char *line
, size_t len
)
400 register char *cp
= line
;
412 msg("Protocol to remote tape server botched.\n");
413 msg("(rmtgets got \"%s\").\n", line
);
417 int piped_child(const char **command
) {
419 int to_child_pipe
[2];
420 int from_child_pipe
[2];
422 if (pipe (to_child_pipe
) < 0) {
423 msg ("cannot create pipe: %s\n", strerror(errno
));
426 if (pipe (from_child_pipe
) < 0) {
427 msg ("cannot create pipe: %s\n", strerror(errno
));
432 msg ("cannot fork: %s\n", strerror(errno
));
436 if (dup2 (to_child_pipe
[0], STDIN_FILENO
) < 0) {
437 msg ("cannot dup2 pipe: %s\n", strerror(errno
));
440 if (close (to_child_pipe
[1]) < 0) {
441 msg ("cannot close pipe: %s\n", strerror(errno
));
444 if (close (from_child_pipe
[0]) < 0) {
445 msg ("cannot close pipe: %s\n", strerror(errno
));
448 if (dup2 (from_child_pipe
[1], STDOUT_FILENO
) < 0) {
449 msg ("cannot dup2 pipe: %s\n", strerror(errno
));
452 execvp (command
[0], (char *const *) command
);
453 msg("cannot exec %s: %s\n", command
[0], strerror(errno
));
456 if (close (to_child_pipe
[0]) < 0) {
457 msg ("cannot close pipe: %s\n", strerror(errno
));
460 if (close (from_child_pipe
[1]) < 0) {
461 msg ("cannot close pipe: %s\n", strerror(errno
));
464 tormtape
= to_child_pipe
[1];
465 fromrmtape
= from_child_pipe
[0];