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authorscottr <scottr@NetBSD.org>1996-03-05 20:39:32 +0000
committerscottr <scottr@NetBSD.org>1996-03-05 20:39:32 +0000
commit41c2cff5ab3215f0b00a9ab0dd5017dbb8395ae7 (patch)
tree62fe5ed9f2ef07a3650807540bfe539f9db76113
parent3020e66dd5881ffef4e22eae21932dbde06a37dd (diff)
Add remote tape capabilities.
-rw-r--r--bin/mt/mt.111
-rw-r--r--bin/mt/mt.c41
-rw-r--r--bin/mt/mt.h51
-rw-r--r--bin/mt/mtrmt.c304
-rw-r--r--bin/mt/pathnames.h38
5 files changed, 435 insertions, 10 deletions
diff --git a/bin/mt/mt.1 b/bin/mt/mt.1
index e134616b776..0f23ed44d04 100644
--- a/bin/mt/mt.1
+++ b/bin/mt/mt.1
@@ -1,4 +1,4 @@
-.\" $NetBSD: mt.1,v 1.6 1995/08/22 19:36:00 jtc Exp $
+.\" $NetBSD: mt.1,v 1.7 1996/03/05 20:39:42 scottr Exp $
.\"
.\" Copyright (c) 1981, 1990, 1993
.\" The Regents of the University of California. All rights reserved.
@@ -56,6 +56,15 @@ Note
that
.Ar tapename
must reference a raw (not block) tape device.
+If
+.Ar tapename
+is of the form
+.Dq host:tapename ,
+or
+.Dq user@host:tapename ,
+.Nm mt
+writes to the named tape device on the remote host using
+.Xr rmt 8 .
.Pp
The available commands are listed below. Only as many
characters as are required to uniquely identify a command
diff --git a/bin/mt/mt.c b/bin/mt/mt.c
index aa82d1a3546..2552acd7514 100644
--- a/bin/mt/mt.c
+++ b/bin/mt/mt.c
@@ -1,4 +1,4 @@
-/* $NetBSD: mt.c,v 1.8 1995/09/28 07:18:20 tls Exp $ */
+/* $NetBSD: mt.c,v 1.9 1996/03/05 20:39:32 scottr Exp $ */
/*
* Copyright (c) 1980, 1993
@@ -43,7 +43,7 @@ static char copyright[] =
#if 0
static char sccsid[] = "@(#)mt.c 8.2 (Berkeley) 6/6/93";
#else
-static char rcsid[] = "$NetBSD: mt.c,v 1.8 1995/09/28 07:18:20 tls Exp $";
+static char rcsid[] = "$NetBSD: mt.c,v 1.9 1996/03/05 20:39:32 scottr Exp $";
#endif
#endif /* not lint */
@@ -61,6 +61,8 @@ static char rcsid[] = "$NetBSD: mt.c,v 1.8 1995/09/28 07:18:20 tls Exp $";
#include <ctype.h>
#include <string.h>
+#include "mt.h"
+
struct commands {
char *c_name;
int c_code;
@@ -86,6 +88,8 @@ void printreg __P((char *, u_int, char *));
void status __P((struct mtget *));
void usage __P((void));
+char *host = NULL; /* remote host (if any) */
+
int
main(argc, argv)
int argc;
@@ -116,6 +120,15 @@ main(argc, argv)
if (argc < 1 || argc > 2)
usage();
+ if (strchr(tape, ':')) {
+ host = tape;
+ tape = strchr(host, ':');
+ *tape++ = '\0';
+ if (rmthost(host) == 0)
+ exit(X_ABORT);
+ }
+ (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
+
len = strlen(p = *argv++);
for (comp = com;; comp++) {
if (comp->c_name == NULL)
@@ -123,7 +136,8 @@ main(argc, argv)
if (strncmp(p, comp->c_name, len) == 0)
break;
}
- if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0)
+ if ((mtfd = host ? rmtopen(tape, 2) :
+ open(tape, O_WRONLY|O_CREAT, 0666)) < 0)
err(2, "%s", tape);
if (comp->c_code != MTNOP) {
mt_com.mt_op = comp->c_code;
@@ -134,14 +148,23 @@ main(argc, argv)
}
else
mt_com.mt_count = 1;
- if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0)
+ if ((host ? rmtioctl(mt_com.mt_op, mt_com.mt_count) :
+ ioctl(mtfd, MTIOCTOP, &mt_com)) < 0)
err(2, "%s: %s", tape, comp->c_name);
} else {
- if (ioctl(mtfd, MTIOCGET, &mt_status) < 0)
- err(2, "ioctl MTIOCGET");
- status(&mt_status);
+ if (host) {
+ status(rmtstatus());
+ } else {
+ if (ioctl(mtfd, MTIOCGET, &mt_status) < 0)
+ err(2, "ioctl MTIOCGET");
+ status(&mt_status);
+ }
}
- exit (0);
+
+ if (host)
+ rmtclose();
+
+ exit(X_FINOK);
/* NOTREACHED */
}
@@ -232,5 +255,5 @@ void
usage()
{
(void)fprintf(stderr, "usage: mt [-f device] command [ count ]\n");
- exit(1);
+ exit(X_USAGE);
}
diff --git a/bin/mt/mt.h b/bin/mt/mt.h
new file mode 100644
index 00000000000..3d6dc221022
--- /dev/null
+++ b/bin/mt/mt.h
@@ -0,0 +1,51 @@
+/* $NetBSD: mt.h,v 1.1 1996/03/05 20:39:36 scottr Exp $ */
+
+/*-
+ * Copyright (c) 1980, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* rmt routines */
+void rmtclose __P((void));
+int rmthost __P((char *host));
+int rmtopen __P((char *tape, int mode));
+int rmtioctl __P((int command, int count));
+struct mtget *rmtstatus __P((void));
+
+void interrupt __P((int signo)); /* in case operator bangs on console */
+
+/*
+ * Exit status codes
+ */
+#define X_FINOK 0 /* normal exit */
+#define X_USAGE 1 /* invalid usage, no action performed */
+#define X_REWRITE 2 /* restart writing from the check point */
+#define X_ABORT 3 /* abort dump; don't attempt checkpointing */
diff --git a/bin/mt/mtrmt.c b/bin/mt/mtrmt.c
new file mode 100644
index 00000000000..c5510d1c1aa
--- /dev/null
+++ b/bin/mt/mtrmt.c
@@ -0,0 +1,304 @@
+/* $NetBSD: mtrmt.c,v 1.1 1996/03/05 20:39:38 scottr Exp $ */
+
+/*-
+ * Copyright (c) 1980, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * This was unceremoniously ripped out of usr.sbin/dump/dumprmt.c:
+ *
+ * static char sccsid[] = "@(#)dumprmt.c 8.1 (Berkeley) 6/5/93";
+ *
+ */
+
+#include <sys/param.h>
+#include <sys/mtio.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#ifdef sunos
+#include <sys/vnode.h>
+
+#include <ufs/inode.h>
+#else
+#include <ufs/ufs/dinode.h>
+#endif
+
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+#include <protocols/dumprestore.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <netdb.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdio.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#endif
+
+#include "pathnames.h"
+#include "mt.h"
+
+#define TS_CLOSED 0
+#define TS_OPEN 1
+
+static int rmtstate = TS_CLOSED;
+static int rmtape;
+static char *rmtpeer;
+
+static int okname __P((char *));
+static int rmtcall __P((char *, char *));
+static void rmtconnaborted __P((/* int, int */));
+static int rmtgetb __P((void));
+static void rmtgetconn __P((void));
+static void rmtgets __P((char *, int));
+static int rmtreply __P((char *));
+
+int
+rmthost(host)
+ char *host;
+{
+
+ rmtpeer = malloc(strlen(host) + 1);
+ if (rmtpeer)
+ strcpy(rmtpeer, host);
+ else
+ rmtpeer = host;
+ signal(SIGPIPE, rmtconnaborted);
+ rmtgetconn();
+ if (rmtape < 0)
+ return (0);
+ return (1);
+}
+
+static void
+rmtconnaborted()
+{
+
+ errx(1, "Lost connection to remote host.");
+}
+
+void
+rmtgetconn()
+{
+ register char *cp;
+ static struct servent *sp = NULL;
+ static struct passwd *pwd = NULL;
+#ifdef notdef
+ static int on = 1;
+#endif
+ char *tuser;
+ int size;
+ int maxseg;
+
+ if (sp == NULL) {
+ sp = getservbyname("shell", "tcp");
+ if (sp == NULL)
+ errx(1, "shell/tcp: unknown service");
+ pwd = getpwuid(getuid());
+ if (pwd == NULL)
+ errx(1, "who are you?");
+ }
+ if ((cp = strchr(rmtpeer, '@')) != NULL) {
+ tuser = rmtpeer;
+ *cp = '\0';
+ if (!okname(tuser))
+ exit(1);
+ rmtpeer = ++cp;
+ } else
+ tuser = pwd->pw_name;
+ rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name, tuser,
+ _PATH_RMT, (int *)0);
+ size = TP_BSIZE;
+ if (size > 60 * 1024) /* XXX */
+ size = 60 * 1024;
+ /* Leave some space for rmt request/response protocol */
+ size += 2 * 1024;
+ while (size > TP_BSIZE &&
+ setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
+ size -= TP_BSIZE;
+ (void)setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
+ maxseg = 1024;
+ if (setsockopt(rmtape, IPPROTO_TCP, TCP_MAXSEG,
+ &maxseg, sizeof (maxseg)) < 0)
+ perror("TCP_MAXSEG setsockopt");
+
+#ifdef notdef
+ if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
+ perror("TCP_NODELAY setsockopt");
+#endif
+}
+
+static int
+okname(cp0)
+ char *cp0;
+{
+ register char *cp;
+ register int c;
+
+ for (cp = cp0; *cp; cp++) {
+ c = *cp;
+ if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) {
+ warnx("invalid user name: %s", cp0);
+ return (0);
+ }
+ }
+ return (1);
+}
+
+int
+rmtopen(tape, mode)
+ char *tape;
+ int mode;
+{
+ char buf[256];
+
+ (void)sprintf(buf, "O%s\n%d\n", tape, mode);
+ rmtstate = TS_OPEN;
+ return (rmtcall(tape, buf));
+}
+
+void
+rmtclose()
+{
+
+ if (rmtstate != TS_OPEN)
+ return;
+ rmtcall("close", "C\n");
+ rmtstate = TS_CLOSED;
+}
+
+struct mtget mts;
+
+struct mtget *
+rmtstatus()
+{
+ register int i;
+ register char *cp;
+
+ if (rmtstate != TS_OPEN)
+ return (NULL);
+ rmtcall("status", "S\n");
+ for (i = 0, cp = (char *)&mts; i < sizeof(mts); i++)
+ *cp++ = rmtgetb();
+ return (&mts);
+}
+
+int
+rmtioctl(cmd, count)
+ int cmd, count;
+{
+ char buf[256];
+
+ if (count < 0)
+ return (-1);
+ (void)sprintf(buf, "I%d\n%d\n", cmd, count);
+ return (rmtcall("ioctl", buf));
+}
+
+static int
+rmtcall(cmd, buf)
+ char *cmd, *buf;
+{
+
+ if (write(rmtape, buf, strlen(buf)) != strlen(buf))
+ rmtconnaborted();
+ return (rmtreply(cmd));
+}
+
+static int
+rmtreply(cmd)
+ char *cmd;
+{
+ register char *cp;
+ char code[30], emsg[BUFSIZ];
+
+ rmtgets(code, sizeof (code));
+ if (*code == 'E' || *code == 'F') {
+ rmtgets(emsg, sizeof (emsg));
+ warnx("%s: %s", cmd, emsg);
+ if (*code == 'F') {
+ rmtstate = TS_CLOSED;
+ return (-1);
+ }
+ return (-1);
+ }
+ if (*code != 'A') {
+ /* Kill trailing newline */
+ cp = code + strlen(code);
+ if (cp > code && *--cp == '\n')
+ *cp = '\0';
+
+ warnx("Protocol to remote tape server botched (code \"%s\").\n",
+ code);
+ rmtconnaborted();
+ }
+ return (atoi(code + 1));
+}
+
+int
+rmtgetb()
+{
+ char c;
+
+ if (read(rmtape, &c, 1) != 1)
+ rmtconnaborted();
+ return (c);
+}
+
+/* Get a line (guaranteed to have a trailing newline). */
+void
+rmtgets(line, len)
+ char *line;
+ int len;
+{
+ register char *cp = line;
+
+ while (len > 1) {
+ *cp = rmtgetb();
+ if (*cp == '\n') {
+ cp[1] = '\0';
+ return;
+ }
+ cp++;
+ len--;
+ }
+ *cp = '\0';
+ warnx("Protocol to remote tape server botched.\n");
+ warnx("(rmtgets got \"%s\").\n", line);
+ rmtconnaborted();
+}
diff --git a/bin/mt/pathnames.h b/bin/mt/pathnames.h
new file mode 100644
index 00000000000..608baabf2f9
--- /dev/null
+++ b/bin/mt/pathnames.h
@@ -0,0 +1,38 @@
+/* $NetBSD: pathnames.h,v 1.1 1996/03/05 20:39:40 scottr Exp $ */
+
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <paths.h>
+
+#define _PATH_RMT "/etc/rmt"