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
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
44 static char sccsid[] = "@(#)dumprmt.c 8.3 (Berkeley) 4/28/95";
46 static const char rcsid[] =
47 "$Id: dumprmt.c,v 1.4 1999/10/11 13:08:06 stelian Exp $";
51 #include <sys/types.h>
52 #include <linux/types.h>
54 #include <sys/param.h>
56 #include <sys/socket.h>
59 #include <linux/ext2_fs.h>
60 #include <bsdcompat.h>
64 #include <sys/vnode.h>
66 #include <ufs/inode.h>
68 #include <ufs/ufs/dinode.h>
72 #include <netinet/in.h>
73 #include <netinet/in_systm.h>
74 #include <netinet/ip.h>
75 #include <netinet/tcp.h>
77 #include <protocols/dumprestore.h>
81 #include <compaterr.h>
92 #include <ext2fs/ext2fs.h>
95 #include "pathnames.h"
101 static int rmtstate = TS_CLOSED;
102 static int rmtape = -1;
103 static const char *rmtpeer = 0;
105 static int okname __P((const char *));
106 static int rmtcall __P((const char *, const char *));
107 static void rmtconnaborted __P((int));
108 static int rmtgetb __P((void));
109 static void rmtgetconn __P((void));
110 static void rmtgets __P((char *, size_t));
111 static int rmtreply __P((const char *));
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);
138 rmtconnaborted(int signo)
140 msg("Lost connection to remote host.\n");
149 if (select(errfd + 1, &r, NULL, NULL, &t)) {
153 if ((i = read(errfd, buf, sizeof(buf) - 1)) > 0) {
155 msg("on %s: %s%s", rmtpeer, buf,
156 buf[i - 1] == '\n' ? "" : "\n");
168 register const char *rmt;
169 static struct servent *sp = NULL;
170 static struct passwd *pwd = NULL;
177 sp = getservbyname(dokerberos ? "kshell" : "shell", "tcp");
179 errx(1, "%s/tcp: unknown service",
180 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 rmtape = krcmd((char **)&rmtpeer, sp->s_port, tuser, rmt, &errfd,
202 rmtape = rcmd((char **)&rmtpeer, (u_short)sp->s_port, pwd->pw_name,
205 msg("login to %s as %s failed.\n", rmtpeer, tuser);
208 (void)fprintf(stderr, "Connection to %s established.\n", rmtpeer);
209 size = ntrec * TP_BSIZE;
210 if (size > 60 * 1024) /* XXX */
212 /* Leave some space for rmt request/response protocol */
214 while (size > TP_BSIZE &&
215 setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
217 (void)setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
218 throughput = IPTOS_THROUGHPUT;
219 if (setsockopt(rmtape, IPPROTO_IP, IP_TOS,
220 &throughput, sizeof(throughput)) < 0)
221 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
223 if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
224 perror("TCP_NODELAY setsockopt");
228 okname(const char *cp0)
230 register const char *cp;
233 for (cp = cp0; *cp; cp++) {
235 if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) {
236 warnx("invalid user name %s\n", cp0);
244 rmtopen(const char *tape, int mode)
246 char buf[MAXPATHLEN];
248 (void)snprintf(buf, sizeof (buf), "O%s\n%d\n", tape, mode);
250 return (rmtcall(tape, buf));
257 if (rmtstate != TS_OPEN)
259 rmtcall("close", "C\n");
260 rmtstate = TS_CLOSED;
264 rmtread(char *buf, size_t count)
270 (void)snprintf(line, sizeof (line), "R%u\n", (unsigned)count);
271 n = rmtcall("read", line);
273 /* rmtcall() properly sets errno for us on errors. */
275 for (i = 0; i < n; i += cc) {
276 cc = read(rmtape, buf+i, n - i);
284 rmtwrite(const char *buf, size_t count)
288 (void)snprintf(line, sizeof (line), "W%d\n", count);
289 write(rmtape, line, strlen(line));
290 write(rmtape, buf, count);
291 return (rmtreply("write"));
295 rmtseek(int offset, int pos)
299 (void)snprintf(line, sizeof (line), "L%d\n%d\n", offset, pos);
300 return (rmtcall("seek", line));
311 if (rmtstate != TS_OPEN)
313 rmtcall("status", "S\n");
314 for (i = 0, cp = (char *)&mts; i < sizeof(mts); i++)
320 rmtioctl(int cmd, int count)
326 (void)snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count);
327 return (rmtcall("ioctl", buf));
331 rmtcall(const char *cmd, const char *buf)
334 if (write(rmtape, buf, strlen(buf)) != strlen(buf))
336 return (rmtreply(cmd));
340 rmtreply(const char *cmd)
343 char code[30], emsg[BUFSIZ];
345 rmtgets(code, sizeof (code));
346 if (*code == 'E' || *code == 'F') {
347 rmtgets(emsg, sizeof (emsg));
348 msg("%s: %s", cmd, emsg);
349 errno = atoi(code + 1);
351 rmtstate = TS_CLOSED;
355 /* Kill trailing newline */
356 cp = code + strlen(code);
357 if (cp > code && *--cp == '\n')
360 msg("Protocol to remote tape server botched (code \"%s\").\n",
364 return (atoi(code + 1));
372 if (read(rmtape, &c, 1) != 1)
377 /* Get a line (guaranteed to have a trailing newline). */
379 rmtgets(char *line, size_t len)
381 register char *cp = line;
393 msg("Protocol to remote tape server botched.\n");
394 msg("(rmtgets got \"%s\").\n", line);