2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
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32 static char sccsid[] = "@(#)dumprmt.c 8.3 (Berkeley) 4/28/95";
34 static const char rcsid[] =
38 #include <sys/param.h>
40 #include <sys/socket.h>
43 #include <ufs/ufs/dinode.h>
45 #include <netinet/in.h>
46 #include <netinet/in_systm.h>
47 #include <netinet/ip.h>
48 #include <netinet/tcp.h>
50 #include <protocols/dumprestore.h>
62 #include "pathnames.h"
68 static int rmtstate = TS_CLOSED;
72 static int okname(const char *);
73 static int rmtcall(const char *, const char *);
74 static void rmtconnaborted(int);
75 static int rmtgetb(void);
76 static void rmtgetconn(void);
77 static void rmtgets(char *, int);
78 static int rmtreply(const char *);
80 static int errfd = -1;
81 extern int ntrec; /* blocking factor on tape */
84 rmthost(const char *host)
87 rmtpeer = strdup(host);
90 signal(SIGPIPE, rmtconnaborted);
98 rmtconnaborted(int sig __unused)
100 msg("Lost connection to remote host.\n");
109 if (select(errfd + 1, &r, NULL, NULL, &t)) {
113 if ((i = read(errfd, buf, sizeof(buf) - 1)) > 0) {
115 msg("on %s: %s%s", rmtpeer, buf,
116 buf[i - 1] == '\n' ? "" : "\n");
129 static struct servent *sp = NULL;
130 static struct passwd *pwd = NULL;
137 sp = getservbyname("shell", "tcp");
139 msg("shell/tcp: unknown service\n");
142 pwd = getpwuid(getuid());
144 msg("who are you?\n");
148 if ((cp = strchr(rmtpeer, '@')) != NULL) {
155 tuser = pwd->pw_name;
156 if ((rmt = getenv("RMT")) == NULL)
159 rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name,
162 msg("login to %s as %s failed.\n", rmtpeer, tuser);
165 (void)fprintf(stderr, "Connection to %s established.\n", rmtpeer);
166 size = ntrec * TP_BSIZE;
167 if (size > 60 * 1024) /* XXX */
169 /* Leave some space for rmt request/response protocol */
171 while (size > TP_BSIZE &&
172 setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
174 (void)setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
175 throughput = IPTOS_THROUGHPUT;
176 if (setsockopt(rmtape, IPPROTO_IP, IP_TOS,
177 &throughput, sizeof(throughput)) < 0)
178 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
180 if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
181 perror("TCP_NODELAY setsockopt");
185 okname(const char *cp0)
190 for (cp = cp0; *cp; cp++) {
192 if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) {
193 msg("invalid user name %s\n", cp0);
201 rmtopen(const char *tape, int mode)
205 (void)snprintf(buf, sizeof (buf), "O%.226s\n%d\n", tape, mode);
207 return (rmtcall(tape, buf));
214 if (rmtstate != TS_OPEN)
216 rmtcall("close", "C\n");
217 rmtstate = TS_CLOSED;
221 rmtread(char *buf, int count)
226 (void)snprintf(line, sizeof (line), "R%d\n", count);
227 n = rmtcall("read", line);
229 /* rmtcall() properly sets errno for us on errors. */
231 for (i = 0; i < n; i += cc) {
232 cc = read(rmtape, buf+i, n - i);
240 rmtwrite(const char *buf, int count)
244 (void)snprintf(line, sizeof (line), "W%d\n", count);
245 write(rmtape, line, strlen(line));
246 write(rmtape, buf, count);
247 return (rmtreply("write"));
255 (void)snprintf(line, sizeof (line), "W%d\n", count);
256 write(rmtape, line, strlen(line));
260 rmtwrite1(const char *buf, int count)
263 write(rmtape, buf, count);
270 return (rmtreply("write"));
274 rmtseek(int offset, int pos) /* XXX off_t ? */
278 (void)snprintf(line, sizeof (line), "L%d\n%d\n", offset, pos);
279 return (rmtcall("seek", line));
290 if (rmtstate != TS_OPEN)
292 rmtcall("status", "S\n");
293 for (i = 0, cp = (char *)&mts; i < sizeof(mts); i++)
299 rmtioctl(int cmd, int count)
305 (void)snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count);
306 return (rmtcall("ioctl", buf));
310 rmtcall(const char *cmd, const char *buf)
313 if (write(rmtape, buf, strlen(buf)) != strlen(buf))
315 return (rmtreply(cmd));
319 rmtreply(const char *cmd)
322 char code[30], emsg[BUFSIZ];
324 rmtgets(code, sizeof (code));
325 if (*code == 'E' || *code == 'F') {
326 rmtgets(emsg, sizeof (emsg));
327 msg("%s: %s", cmd, emsg);
328 errno = atoi(code + 1);
330 rmtstate = TS_CLOSED;
334 /* Kill trailing newline */
335 cp = code + strlen(code);
336 if (cp > code && *--cp == '\n')
339 msg("Protocol to remote tape server botched (code \"%s\").\n",
343 return (atoi(code + 1));
351 if (read(rmtape, &c, 1) != 1)
356 /* Get a line (guaranteed to have a trailing newline). */
358 rmtgets(char *line, int len)
372 msg("Protocol to remote tape server botched.\n");
373 msg("(rmtgets got \"%s\").\n", line);