]>
git.wh0rd.org - dump.git/blob - common/dumprmt.c
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 1.6 1999/10/13 09:57:18 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 rmtape
= -1;
99 static const char *rmtpeer
= 0;
101 static int okname
__P((const char *));
102 static int rmtcall
__P((const char *, const char *));
103 static void rmtconnaborted
__P((int));
104 static int rmtgetb
__P((void));
105 static void rmtgetconn
__P((void));
106 static void rmtgets
__P((char *, size_t));
107 static int rmtreply
__P((const char *));
109 int krcmd
__P((char **, int /*u_short*/, char *, char *, int *, char *));
112 static int errfd
= -1;
113 extern int dokerberos
;
114 extern int ntrec
; /* blocking factor on tape */
120 rmthost(const char *host
)
123 free((void *)rmtpeer
);
124 if ((rmtpeer
= strdup(host
)) == NULL
)
126 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
;
173 sp
= getservbyname(dokerberos
? "kshell" : "shell", "tcp");
175 errx(1, "%s/tcp: unknown service",
176 dokerberos
? "kshell" : "shell");
177 pwd
= getpwuid(getuid());
179 errx(1, "who are you?");
181 if ((cp
= strchr(rmtpeer
, '@')) != NULL
) {
188 tuser
= pwd
->pw_name
;
189 if ((rmt
= getenv("RMT")) == NULL
)
194 rmtape
= krcmd((char **)&rmtpeer
, sp
->s_port
, tuser
, rmt
, &errfd
,
198 rmtape
= rcmd((char **)&rmtpeer
, (u_short
)sp
->s_port
, pwd
->pw_name
,
201 msg("login to %s as %s failed.\n", rmtpeer
, tuser
);
204 (void)fprintf(stderr
, "Connection to %s established.\n", rmtpeer
);
205 size
= ntrec
* TP_BSIZE
;
206 if (size
> 60 * 1024) /* XXX */
208 /* Leave some space for rmt request/response protocol */
210 while (size
> TP_BSIZE
&&
211 setsockopt(rmtape
, SOL_SOCKET
, SO_SNDBUF
, &size
, sizeof (size
)) < 0)
213 (void)setsockopt(rmtape
, SOL_SOCKET
, SO_RCVBUF
, &size
, sizeof (size
));
214 throughput
= IPTOS_THROUGHPUT
;
215 if (setsockopt(rmtape
, IPPROTO_IP
, IP_TOS
,
216 &throughput
, sizeof(throughput
)) < 0)
217 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
219 if (setsockopt(rmtape
, IPPROTO_TCP
, TCP_NODELAY
, &on
, sizeof (on
)) < 0)
220 perror("TCP_NODELAY setsockopt");
224 okname(const char *cp0
)
226 register const char *cp
;
229 for (cp
= cp0
; *cp
; cp
++) {
231 if (!isascii(c
) || !(isalnum(c
) || c
== '_' || c
== '-')) {
232 warnx("invalid user name %s\n", cp0
);
240 rmtopen(const char *tape
, int mode
)
242 char buf
[MAXPATHLEN
];
244 (void)snprintf(buf
, sizeof (buf
), "O%s\n%d\n", tape
, mode
);
246 return (rmtcall(tape
, buf
));
253 if (rmtstate
!= TS_OPEN
)
255 rmtcall("close", "C\n");
256 rmtstate
= TS_CLOSED
;
260 rmtread(char *buf
, size_t count
)
266 (void)snprintf(line
, sizeof (line
), "R%u\n", (unsigned)count
);
267 n
= rmtcall("read", line
);
269 /* rmtcall() properly sets errno for us on errors. */
271 for (i
= 0; i
< n
; i
+= cc
) {
272 cc
= read(rmtape
, buf
+i
, n
- i
);
280 rmtwrite(const char *buf
, size_t count
)
284 (void)snprintf(line
, sizeof (line
), "W%d\n", count
);
285 write(rmtape
, line
, strlen(line
));
286 write(rmtape
, buf
, count
);
287 return (rmtreply("write"));
291 rmtseek(int offset
, int pos
)
295 (void)snprintf(line
, sizeof (line
), "L%d\n%d\n", offset
, pos
);
296 return (rmtcall("seek", line
));
307 if (rmtstate
!= TS_OPEN
)
309 rmtcall("status", "S\n");
310 for (i
= 0, cp
= (char *)&mts
; i
< sizeof(mts
); i
++)
316 rmtioctl(int cmd
, int count
)
322 (void)snprintf(buf
, sizeof (buf
), "I%d\n%d\n", cmd
, count
);
323 return (rmtcall("ioctl", buf
));
327 rmtcall(const char *cmd
, const char *buf
)
330 if (write(rmtape
, buf
, strlen(buf
)) != strlen(buf
))
332 return (rmtreply(cmd
));
336 rmtreply(const char *cmd
)
339 char code
[30], emsg
[BUFSIZ
];
341 rmtgets(code
, sizeof (code
));
342 if (*code
== 'E' || *code
== 'F') {
343 rmtgets(emsg
, sizeof (emsg
));
344 msg("%s: %s", cmd
, emsg
);
345 errno
= atoi(code
+ 1);
347 rmtstate
= TS_CLOSED
;
351 /* Kill trailing newline */
352 cp
= code
+ strlen(code
);
353 if (cp
> code
&& *--cp
== '\n')
356 msg("Protocol to remote tape server botched (code \"%s\").\n",
360 return (atoi(code
+ 1));
368 if (read(rmtape
, &c
, 1) != 1)
373 /* Get a line (guaranteed to have a trailing newline). */
375 rmtgets(char *line
, size_t len
)
377 register char *cp
= line
;
389 msg("Protocol to remote tape server botched.\n");
390 msg("(rmtgets got \"%s\").\n", line
);