]>
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@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - AlcĂ´ve <www.alcove.fr>, 2000
10 * Copyright (c) 1980, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 static const char rcsid
[] =
44 "$Id: dumprmt.c,v 1.17 2001/06/18 10:58:28 stelian Exp $";
48 #include <sys/param.h>
50 #include <sys/socket.h>
53 #include <sys/types.h>
54 #ifdef HAVE_EXT2FS_EXT2_FS_H
55 #include <ext2fs/ext2_fs.h>
57 #include <linux/ext2_fs.h>
59 #include <bsdcompat.h>
62 #include <sys/vnode.h>
64 #include <ufs/inode.h>
66 #include <ufs/ufs/dinode.h>
69 #include <netinet/in.h>
70 #include <netinet/in_systm.h>
71 #include <netinet/ip.h>
72 #include <netinet/tcp.h>
74 #include <protocols/dumprestore.h>
78 #include <compaterr.h>
89 #include <ext2fs/ext2fs.h>
92 #include "pathnames.h"
98 static int rmtstate
= TS_CLOSED
;
99 static int tormtape
= -1;
100 static int fromrmtape
= -1;
102 static const char *rmtpeer
= 0;
104 static int okname
__P((const char *));
105 static int rmtcall
__P((const char *, const char *));
106 static void rmtconnaborted
__P((int));
107 static int rmtgetb
__P((void));
108 static int rmtgetconn
__P((void));
109 static void rmtgets
__P((char *, size_t));
110 static int rmtreply
__P((const char *));
111 static int piped_child
__P((const char **command
));
113 int krcmd
__P((char **, int /*u_short*/, char *, char *, int *, char *));
116 static int errfd
= -1;
117 extern int dokerberos
;
118 extern int ntrec
; /* blocking factor on tape */
124 rmthost(const char *host
)
127 free((void *)rmtpeer
);
128 if ((rmtpeer
= strdup(host
)) == NULL
)
130 signal(SIGPIPE
, rmtconnaborted
);
135 rmtconnaborted(int signo
)
137 msg("Lost connection to remote host.\n");
146 if (select(errfd
+ 1, &r
, NULL
, NULL
, &t
)) {
150 if ((i
= read(errfd
, buf
, sizeof(buf
) - 1)) > 0) {
152 msg("on %s: %s%s", rmtpeer
, buf
,
153 buf
[i
- 1] == '\n' ? "" : "\n");
165 register const char *rmt
;
166 static struct servent
*sp
= NULL
;
167 static struct passwd
*pwd
= NULL
;
177 if (!rsh
&& sp
== NULL
) {
178 sp
= getservbyname(dokerberos
? "kshell" : "shell", "tcp");
180 errx(1, "%s/tcp: unknown service",
181 dokerberos
? "kshell" : "shell");
184 pwd
= getpwuid(getuid());
186 errx(1, "who are you?");
188 if ((cp
= strchr(rmtpeer
, '@')) != NULL
) {
195 tuser
= pwd
->pw_name
;
196 if ((rmt
= getenv("RMT")) == NULL
)
201 const char *rshcmd
[6];
209 /* Restore the uid and gid. We really don't want
210 * to execute whatever is put into RSH variable with
211 * more priviledges than needed... */
215 if ((rshpid
= piped_child(rshcmd
)) < 0) {
216 msg("cannot open connection\n");
221 /* Copy rmtpeer to rmtpeercopy to ignore the
222 return value from rcmd. I cannot figure if
223 this is this a bug in rcmd or in my code... */
224 rmtpeercopy
= (char *)rmtpeer
;
227 tormtape
= krcmd(&rmtpeercopy
, sp
->s_port
, tuser
, rmt
, &errfd
,
231 tormtape
= rcmd(&rmtpeercopy
, (u_short
)sp
->s_port
, pwd
->pw_name
,
234 msg("login to %s as %s failed.\n", rmtpeer
, tuser
);
237 size
= ntrec
* TP_BSIZE
;
238 if (size
> 60 * 1024) /* XXX */
240 /* Leave some space for rmt request/response protocol */
242 while (size
> TP_BSIZE
&&
243 setsockopt(tormtape
, SOL_SOCKET
, SO_SNDBUF
, &size
, sizeof (size
)) < 0)
245 (void)setsockopt(tormtape
, SOL_SOCKET
, SO_RCVBUF
, &size
, sizeof (size
));
246 throughput
= IPTOS_THROUGHPUT
;
247 if (setsockopt(tormtape
, IPPROTO_IP
, IP_TOS
,
248 &throughput
, sizeof(throughput
)) < 0)
249 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
251 if (setsockopt(tormtape
, IPPROTO_TCP
, TCP_NODELAY
, &on
, sizeof (on
)) < 0)
252 perror("TCP_NODELAY setsockopt");
253 fromrmtape
= tormtape
;
255 (void)fprintf(stderr
, "Connection to %s established.\n", rmtpeer
);
260 okname(const char *cp0
)
262 register const char *cp
;
265 for (cp
= cp0
; *cp
; cp
++) {
267 if (!isascii(c
) || !(isalnum(c
) || c
== '_' || c
== '-')) {
268 warnx("invalid user name %s\n", cp0
);
276 rmtopen(const char *tape
, int mode
)
278 char buf
[MAXPATHLEN
];
280 (void)snprintf(buf
, sizeof (buf
), "O%s\n%d\n", tape
, mode
);
282 return (rmtcall(tape
, buf
));
289 if (rmtstate
!= TS_OPEN
)
291 rmtcall("close", "C\n");
292 rmtstate
= TS_CLOSED
;
296 rmtread(char *buf
, size_t count
)
302 (void)snprintf(line
, sizeof (line
), "R%u\n", (unsigned)count
);
303 n
= rmtcall("read", line
);
305 /* rmtcall() properly sets errno for us on errors. */
307 for (i
= 0; i
< n
; i
+= cc
) {
308 cc
= read(fromrmtape
, buf
+i
, n
- i
);
316 rmtwrite(const char *buf
, size_t count
)
320 (void)snprintf(line
, sizeof (line
), "W%ld\n", (long)count
);
321 write(tormtape
, line
, strlen(line
));
322 write(tormtape
, buf
, count
);
323 return (rmtreply("write"));
327 rmtseek(int offset
, int pos
)
331 (void)snprintf(line
, sizeof (line
), "L%d\n%d\n", offset
, pos
);
332 return (rmtcall("seek", line
));
343 if (rmtstate
!= TS_OPEN
)
345 rmtcall("status", "S\n");
346 for (i
= 0, cp
= (char *)&mts
; i
< sizeof(mts
); i
++)
352 rmtioctl(int cmd
, int count
)
358 (void)snprintf(buf
, sizeof (buf
), "I%d\n%d\n", cmd
, count
);
359 return (rmtcall("ioctl", buf
));
363 rmtcall(const char *cmd
, const char *buf
)
366 if (write(tormtape
, buf
, strlen(buf
)) != strlen(buf
))
368 return (rmtreply(cmd
));
372 rmtreply(const char *cmd
)
375 char code
[30], emsg
[BUFSIZ
];
377 rmtgets(code
, sizeof (code
));
378 if (*code
== 'E' || *code
== 'F') {
379 rmtgets(emsg
, sizeof (emsg
));
380 msg("%s: %s", cmd
, emsg
);
381 errno
= atoi(code
+ 1);
383 rmtstate
= TS_CLOSED
;
387 /* Kill trailing newline */
388 cp
= code
+ strlen(code
);
389 if (cp
> code
&& *--cp
== '\n')
392 msg("Protocol to remote tape server botched (code \"%s\").\n",
396 return (atoi(code
+ 1));
404 if (read(fromrmtape
, &c
, 1) != 1)
409 /* Get a line (guaranteed to have a trailing newline). */
411 rmtgets(char *line
, size_t len
)
413 register char *cp
= line
;
425 msg("Protocol to remote tape server botched.\n");
426 msg("(rmtgets got \"%s\").\n", line
);
430 int piped_child(const char **command
) {
432 int to_child_pipe
[2];
433 int from_child_pipe
[2];
435 if (pipe (to_child_pipe
) < 0) {
436 msg ("cannot create pipe: %s\n", strerror(errno
));
439 if (pipe (from_child_pipe
) < 0) {
440 msg ("cannot create pipe: %s\n", strerror(errno
));
445 msg ("cannot fork: %s\n", strerror(errno
));
449 if (dup2 (to_child_pipe
[0], STDIN_FILENO
) < 0) {
450 msg ("cannot dup2 pipe: %s\n", strerror(errno
));
453 if (close (to_child_pipe
[1]) < 0) {
454 msg ("cannot close pipe: %s\n", strerror(errno
));
457 if (close (from_child_pipe
[0]) < 0) {
458 msg ("cannot close pipe: %s\n", strerror(errno
));
461 if (dup2 (from_child_pipe
[1], STDOUT_FILENO
) < 0) {
462 msg ("cannot dup2 pipe: %s\n", strerror(errno
));
465 setpgid(0, getpid());
466 execvp (command
[0], (char *const *) command
);
467 msg("cannot exec %s: %s\n", command
[0], strerror(errno
));
470 if (close (to_child_pipe
[0]) < 0) {
471 msg ("cannot close pipe: %s\n", strerror(errno
));
474 if (close (from_child_pipe
[1]) < 0) {
475 msg ("cannot close pipe: %s\n", strerror(errno
));
478 tormtape
= to_child_pipe
[1];
479 fromrmtape
= from_child_pipe
[0];