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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 1.13 2005/04/14 10:17:23 y0netan1 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>
69 #include "pathnames.h"
75 static int rmtstate = TS_CLOSED;
79 static int okname(char *);
80 static int rmtcall(const char *, const char *);
81 static void rmtconnaborted(int);
82 static int rmtgetb(void);
83 static void rmtgetconn(void);
84 static void rmtgets(char *, int);
85 static int rmtreply(const char *);
87 int krcmd(char **, int /*u_short*/, char *, char *, int *, char *);
90 static int errfd = -1;
93 rmthost(const char *hostname)
96 if ((rmtpeer = strdup(hostname)) == NULL)
97 err(1, "strdup failed");
98 signal(SIGPIPE, rmtconnaborted);
106 rmtconnaborted(int signo __unused)
108 msg("Lost connection to remote host.\n");
117 if (select(errfd + 1, &r, NULL, NULL, &t)) {
121 if ((i = read(errfd, buf, sizeof(buf) - 1)) > 0) {
123 msg("on %s: %s%s", rmtpeer, buf,
124 buf[i - 1] == '\n' ? "" : "\n");
137 static struct servent *sp = NULL;
138 static struct passwd *pwd = NULL;
145 sp = getservbyname(dokerberos ? "kshell" : "shell", "tcp");
147 msg("%s/tcp: unknown service\n",
148 dokerberos ? "kshell" : "shell");
151 pwd = getpwuid(getuid());
153 msg("who are you?\n");
157 if ((cp = strchr(rmtpeer, '@')) != NULL) {
164 tuser = pwd->pw_name;
165 if ((rmt = getenv("RMT")) == NULL)
170 rmtape = krcmd(&rmtpeer, sp->s_port, tuser, rmt, &errfd, NULL);
173 rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name,
176 msg("login to %s as %s failed.\n", rmtpeer, tuser);
179 fprintf(stderr, "Connection to %s established.\n", rmtpeer);
180 size = ntrec * TP_BSIZE;
181 if (size > 60 * 1024) /* XXX */
183 /* Leave some space for rmt request/response protocol */
185 while (size > TP_BSIZE &&
186 setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
188 setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
189 throughput = IPTOS_THROUGHPUT;
190 if (setsockopt(rmtape, IPPROTO_IP, IP_TOS,
191 &throughput, sizeof(throughput)) < 0)
192 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
194 if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
195 perror("TCP_NODELAY setsockopt");
204 for (cp = cp0; *cp; cp++) {
206 if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) {
207 msg("invalid user name %s\n", cp0);
215 rmtopen(const char *rtape, int mode)
219 snprintf(buf, sizeof (buf), "O%.226s\n%d\n", rtape, mode);
221 return (rmtcall(rtape, buf));
228 if (rmtstate != TS_OPEN)
230 rmtcall("close", "C\n");
231 rmtstate = TS_CLOSED;
236 rmtread(char *buf, int count)
241 snprintf(line, sizeof (line), "R%d\n", count);
242 n = rmtcall("read", line);
244 /* rmtcall() properly sets errno for us on errors. */
246 for (i = 0; i < n; i += cc) {
247 cc = read(rmtape, buf+i, n - i);
255 rmtseek(int offset, int pos)
259 snprintf(line, sizeof (line), "L%d\n%d\n", offset, pos);
260 return (rmtcall("seek", line));
264 rmtioctl(int cmd, int count)
270 snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count);
271 return (rmtcall("ioctl", buf));
273 #endif /* RRESTORE */
276 rmtwrite(const void *buf, int count)
280 snprintf(line, sizeof (line), "W%d\n", count);
281 write(rmtape, line, strlen(line));
282 write(rmtape, buf, count);
283 return (rmtreply("write"));
287 rmtcall(const char *cmd, const char *buf)
289 ssize_t len = (ssize_t)strlen(buf);
291 if (write(rmtape, buf, len) != len)
293 return (rmtreply(cmd));
297 rmtreply(const char *cmd)
300 char code[30], emsg[BUFSIZ];
302 rmtgets(code, sizeof (code));
303 if (*code == 'E' || *code == 'F') {
304 rmtgets(emsg, sizeof (emsg));
305 msg("%s: %s", cmd, emsg);
306 errno = atoi(code + 1);
308 rmtstate = TS_CLOSED;
312 /* Kill trailing newline */
313 cp = code + strlen(code);
314 if (cp > code && *--cp == '\n')
317 msg("Protocol to remote tape server botched (code \"%s\").\n",
321 return (atoi(code + 1));
329 if (read(rmtape, &c, 1) != 1)
334 /* Get a line (guaranteed to have a trailing newline). */
336 rmtgets(char *line, int len)
350 msg("Protocol to remote tape server botched.\n");
351 msg("(rmtgets got \"%s\").\n", line);