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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 1.6 2004/12/18 21:43:38 swildner 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(char *);
79 static int rmtcall(char *, char *);
80 static void rmtconnaborted(/* int, int */);
81 static int rmtgetb(void);
82 static void rmtgetconn(void);
83 static void rmtgets(char *, int);
84 static int rmtreply(char *);
86 int krcmd(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 */
97 rmtpeer = malloc(strlen(host) + 1);
99 strcpy(rmtpeer, host);
102 signal(SIGPIPE, rmtconnaborted);
112 msg("Lost connection to remote host.\n");
121 if (select(errfd + 1, &r, NULL, NULL, &t)) {
125 if ((i = read(errfd, buf, sizeof(buf) - 1)) > 0) {
127 msg("on %s: %s%s", rmtpeer, buf,
128 buf[i - 1] == '\n' ? "" : "\n");
140 register const char *rmt;
141 static struct servent *sp = NULL;
142 static struct passwd *pwd = NULL;
149 sp = getservbyname(dokerberos ? "kshell" : "shell", "tcp");
151 msg("%s/tcp: unknown service\n",
152 dokerberos ? "kshell" : "shell");
155 pwd = getpwuid(getuid());
157 msg("who are you?\n");
161 if ((cp = strchr(rmtpeer, '@')) != NULL) {
168 tuser = pwd->pw_name;
169 if ((rmt = getenv("RMT")) == NULL)
174 rmtape = krcmd(&rmtpeer, sp->s_port, tuser, rmt, &errfd,
178 rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name,
181 msg("login to %s as %s failed.\n", rmtpeer, tuser);
184 fprintf(stderr, "Connection to %s established.\n", rmtpeer);
185 size = ntrec * TP_BSIZE;
186 if (size > 60 * 1024) /* XXX */
188 /* Leave some space for rmt request/response protocol */
190 while (size > TP_BSIZE &&
191 setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
193 setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
194 throughput = IPTOS_THROUGHPUT;
195 if (setsockopt(rmtape, IPPROTO_IP, IP_TOS,
196 &throughput, sizeof(throughput)) < 0)
197 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
199 if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
200 perror("TCP_NODELAY setsockopt");
209 for (cp = cp0; *cp; cp++) {
211 if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) {
212 msg("invalid user name %s\n", cp0);
220 rmtopen(char *tape, int mode)
224 snprintf(buf, sizeof (buf), "O%.226s\n%d\n", tape, mode);
226 return (rmtcall(tape, buf));
233 if (rmtstate != TS_OPEN)
235 rmtcall("close", "C\n");
236 rmtstate = TS_CLOSED;
240 rmtread(char *buf, int count)
245 snprintf(line, sizeof (line), "R%d\n", count);
246 n = rmtcall("read", line);
248 /* rmtcall() properly sets errno for us on errors. */
250 for (i = 0; i < n; i += cc) {
251 cc = read(rmtape, buf+i, n - i);
259 rmtwrite(char *buf, int count)
263 snprintf(line, sizeof (line), "W%d\n", count);
264 write(rmtape, line, strlen(line));
265 write(rmtape, buf, count);
266 return (rmtreply("write"));
274 snprintf(line, sizeof (line), "W%d\n", count);
275 write(rmtape, line, strlen(line));
279 rmtwrite1(char *buf, int count)
282 write(rmtape, buf, count);
289 return (rmtreply("write"));
293 rmtseek(int offset, int pos)
297 snprintf(line, sizeof (line), "L%d\n%d\n", offset, pos);
298 return (rmtcall("seek", line));
309 if (rmtstate != TS_OPEN)
311 rmtcall("status", "S\n");
312 for (i = 0, cp = (char *)&mts; i < sizeof(mts); i++)
318 rmtioctl(int cmd, int count)
324 snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count);
325 return (rmtcall("ioctl", buf));
329 rmtcall(char *cmd, char *buf)
332 if (write(rmtape, buf, strlen(buf)) != strlen(buf))
334 return (rmtreply(cmd));
341 char code[30], emsg[BUFSIZ];
343 rmtgets(code, sizeof (code));
344 if (*code == 'E' || *code == 'F') {
345 rmtgets(emsg, sizeof (emsg));
346 msg("%s: %s", cmd, emsg);
347 errno = atoi(code + 1);
349 rmtstate = TS_CLOSED;
353 /* Kill trailing newline */
354 cp = code + strlen(code);
355 if (cp > code && *--cp == '\n')
358 msg("Protocol to remote tape server botched (code \"%s\").\n",
362 return (atoi(code + 1));
370 if (read(rmtape, &c, 1) != 1)
375 /* Get a line (guaranteed to have a trailing newline). */
377 rmtgets(char *line, int len)
379 register char *cp = line;
391 msg("Protocol to remote tape server botched.\n");
392 msg("(rmtgets got \"%s\").\n", line);