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33 * @(#)dumprmt.c 8.3 (Berkeley) 4/28/95
34 * $FreeBSD: src/sbin/dump/dumprmt.c,v 1.14.2.1 2000/07/01 06:31:52 ps Exp $
35 * $DragonFly: src/sbin/dump/dumprmt.c,v 1.3 2003/08/08 04:18:37 dillon Exp $
38 #include <sys/param.h>
40 #include <sys/socket.h>
43 #include <sys/vnode.h>
45 #include <ufs/inode.h>
47 #include <vfs/ufs/dinode.h>
50 #include <netinet/in.h>
51 #include <netinet/in_systm.h>
52 #include <netinet/ip.h>
53 #include <netinet/tcp.h>
55 #include <protocols/dumprestore.h>
68 #include "pathnames.h"
74 static int rmtstate = TS_CLOSED;
78 static int okname __P((char *));
79 static int rmtcall __P((char *, char *));
80 static void rmtconnaborted __P((/* int, int */));
81 static int rmtgetb __P((void));
82 static void rmtgetconn __P((void));
83 static void rmtgets __P((char *, int));
84 static int rmtreply __P((char *));
86 int krcmd __P((char **, int /*u_short*/, char *, char *, int *, char *));
89 static int errfd = -1;
90 extern int dokerberos;
91 extern int ntrec; /* blocking factor on tape */
98 rmtpeer = malloc(strlen(host) + 1);
100 strcpy(rmtpeer, host);
103 signal(SIGPIPE, rmtconnaborted);
113 msg("Lost connection to remote host.\n");
122 if (select(errfd + 1, &r, NULL, NULL, &t)) {
126 if ((i = read(errfd, buf, sizeof(buf) - 1)) > 0) {
128 msg("on %s: %s%s", rmtpeer, buf,
129 buf[i - 1] == '\n' ? "" : "\n");
141 register const char *rmt;
142 static struct servent *sp = NULL;
143 static struct passwd *pwd = NULL;
150 sp = getservbyname(dokerberos ? "kshell" : "shell", "tcp");
152 msg("%s/tcp: unknown service\n",
153 dokerberos ? "kshell" : "shell");
156 pwd = getpwuid(getuid());
158 msg("who are you?\n");
162 if ((cp = strchr(rmtpeer, '@')) != NULL) {
169 tuser = pwd->pw_name;
170 if ((rmt = getenv("RMT")) == NULL)
175 rmtape = krcmd(&rmtpeer, sp->s_port, tuser, rmt, &errfd,
179 rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name,
182 msg("login to %s as %s failed.\n", rmtpeer, tuser);
185 (void)fprintf(stderr, "Connection to %s established.\n", rmtpeer);
186 size = ntrec * TP_BSIZE;
187 if (size > 60 * 1024) /* XXX */
189 /* Leave some space for rmt request/response protocol */
191 while (size > TP_BSIZE &&
192 setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
194 (void)setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
195 throughput = IPTOS_THROUGHPUT;
196 if (setsockopt(rmtape, IPPROTO_IP, IP_TOS,
197 &throughput, sizeof(throughput)) < 0)
198 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
200 if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
201 perror("TCP_NODELAY setsockopt");
211 for (cp = cp0; *cp; cp++) {
213 if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) {
214 msg("invalid user name %s\n", cp0);
228 (void)snprintf(buf, sizeof (buf), "O%.226s\n%d\n", tape, mode);
230 return (rmtcall(tape, buf));
237 if (rmtstate != TS_OPEN)
239 rmtcall("close", "C\n");
240 rmtstate = TS_CLOSED;
251 (void)snprintf(line, sizeof (line), "R%d\n", count);
252 n = rmtcall("read", line);
254 /* rmtcall() properly sets errno for us on errors. */
256 for (i = 0; i < n; i += cc) {
257 cc = read(rmtape, buf+i, n - i);
271 (void)snprintf(line, sizeof (line), "W%d\n", count);
272 write(rmtape, line, strlen(line));
273 write(rmtape, buf, count);
274 return (rmtreply("write"));
283 (void)snprintf(line, sizeof (line), "W%d\n", count);
284 write(rmtape, line, strlen(line));
288 rmtwrite1(buf, count)
293 write(rmtape, buf, count);
300 return (rmtreply("write"));
309 (void)snprintf(line, sizeof (line), "L%d\n%d\n", offset, pos);
310 return (rmtcall("seek", line));
321 if (rmtstate != TS_OPEN)
323 rmtcall("status", "S\n");
324 for (i = 0, cp = (char *)&mts; i < sizeof(mts); i++)
337 (void)snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count);
338 return (rmtcall("ioctl", buf));
346 if (write(rmtape, buf, strlen(buf)) != strlen(buf))
348 return (rmtreply(cmd));
356 char code[30], emsg[BUFSIZ];
358 rmtgets(code, sizeof (code));
359 if (*code == 'E' || *code == 'F') {
360 rmtgets(emsg, sizeof (emsg));
361 msg("%s: %s", cmd, emsg);
362 errno = atoi(code + 1);
364 rmtstate = TS_CLOSED;
368 /* Kill trailing newline */
369 cp = code + strlen(code);
370 if (cp > code && *--cp == '\n')
373 msg("Protocol to remote tape server botched (code \"%s\").\n",
377 return (atoi(code + 1));
385 if (read(rmtape, &c, 1) != 1)
390 /* Get a line (guaranteed to have a trailing newline). */
396 register char *cp = line;
408 msg("Protocol to remote tape server botched.\n");
409 msg("(rmtgets got \"%s\").\n", line);