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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 $
37 #include <sys/param.h>
39 #include <sys/socket.h>
42 #include <sys/vnode.h>
44 #include <ufs/inode.h>
46 #include <vfs/ufs/dinode.h>
49 #include <netinet/in.h>
50 #include <netinet/in_systm.h>
51 #include <netinet/ip.h>
52 #include <netinet/tcp.h>
54 #include <protocols/dumprestore.h>
66 #include "pathnames.h"
72 static int rmtstate = TS_CLOSED;
76 static int okname(char *);
77 static int rmtcall(const char *, const char *);
78 static void rmtconnaborted(int);
79 static int rmtgetb(void);
80 static void rmtgetconn(void);
81 static void rmtgets(char *, int);
82 static int rmtreply(const char *);
84 int krcmd(char **, int /*u_short*/, char *, char *, int *, char *);
87 static int errfd = -1;
90 rmthost(const char *hostname)
93 if ((rmtpeer = strdup(hostname)) == NULL)
94 err(1, "strdup failed");
95 signal(SIGPIPE, rmtconnaborted);
103 rmtconnaborted(int signo __unused)
105 msg("Lost connection to remote host.\n");
114 if (select(errfd + 1, &r, NULL, NULL, &t)) {
118 if ((i = read(errfd, buf, sizeof(buf) - 1)) > 0) {
120 msg("on %s: %s%s", rmtpeer, buf,
121 buf[i - 1] == '\n' ? "" : "\n");
134 static struct servent *sp = NULL;
135 static struct passwd *pwd = NULL;
142 sp = getservbyname(dokerberos ? "kshell" : "shell", "tcp");
144 msg("%s/tcp: unknown service\n",
145 dokerberos ? "kshell" : "shell");
148 pwd = getpwuid(getuid());
150 msg("who are you?\n");
154 if ((cp = strchr(rmtpeer, '@')) != NULL) {
161 tuser = pwd->pw_name;
162 if ((rmt = getenv("RMT")) == NULL)
167 rmtape = krcmd(&rmtpeer, sp->s_port, tuser, rmt, &errfd, NULL);
170 rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name,
173 msg("login to %s as %s failed.\n", rmtpeer, tuser);
176 fprintf(stderr, "Connection to %s established.\n", rmtpeer);
177 size = ntrec * TP_BSIZE;
178 if (size > 60 * 1024) /* XXX */
180 /* Leave some space for rmt request/response protocol */
182 while (size > TP_BSIZE &&
183 setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
185 setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
186 throughput = IPTOS_THROUGHPUT;
187 if (setsockopt(rmtape, IPPROTO_IP, IP_TOS,
188 &throughput, sizeof(throughput)) < 0)
189 perror("IP_TOS:IPTOS_THROUGHPUT setsockopt");
191 if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
192 perror("TCP_NODELAY setsockopt");
201 for (cp = cp0; *cp; cp++) {
203 if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) {
204 msg("invalid user name %s\n", cp0);
212 rmtopen(const char *rtape, int mode)
216 snprintf(buf, sizeof (buf), "O%.226s\n%d\n", rtape, mode);
218 return (rmtcall(rtape, buf));
225 if (rmtstate != TS_OPEN)
227 rmtcall("close", "C\n");
228 rmtstate = TS_CLOSED;
233 rmtread(char *buf, int count)
238 snprintf(line, sizeof (line), "R%d\n", count);
239 n = rmtcall("read", line);
241 /* rmtcall() properly sets errno for us on errors. */
243 for (i = 0; i < n; i += cc) {
244 cc = read(rmtape, buf+i, n - i);
252 rmtseek(int offset, int pos)
256 snprintf(line, sizeof (line), "L%d\n%d\n", offset, pos);
257 return (rmtcall("seek", line));
261 rmtioctl(int cmd, int count)
267 snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count);
268 return (rmtcall("ioctl", buf));
270 #endif /* RRESTORE */
273 rmtwrite(const void *buf, int count)
277 snprintf(line, sizeof (line), "W%d\n", count);
278 write(rmtape, line, strlen(line));
279 write(rmtape, buf, count);
280 return (rmtreply("write"));
284 rmtcall(const char *cmd, const char *buf)
286 ssize_t len = (ssize_t)strlen(buf);
288 if (write(rmtape, buf, len) != len)
290 return (rmtreply(cmd));
294 rmtreply(const char *cmd)
297 char code[30], emsg[BUFSIZ];
299 rmtgets(code, sizeof (code));
300 if (*code == 'E' || *code == 'F') {
301 rmtgets(emsg, sizeof (emsg));
302 msg("%s: %s", cmd, emsg);
303 errno = atoi(code + 1);
305 rmtstate = TS_CLOSED;
309 /* Kill trailing newline */
310 cp = code + strlen(code);
311 if (cp > code && *--cp == '\n')
314 msg("Protocol to remote tape server botched (code \"%s\").\n",
318 return (atoi(code + 1));
326 if (read(rmtape, &c, 1) != 1)
331 /* Get a line (guaranteed to have a trailing newline). */
333 rmtgets(char *line, int len)
347 msg("Protocol to remote tape server botched.\n");
348 msg("(rmtgets got \"%s\").\n", line);