4.3BSD-UWisc/src/etc/restore/main.c
#ifndef lint
static char sccsid[] = "@(#)main.c 1.1 85/05/30 SMI"; /* from UCB 3.11 83/06/19 */
#endif
/* Copyright (c) 1983 Regents of the University of California */
/*
* Modified to recursively extract all files within a subtree
* (supressed by the h option) and recreate the heirarchical
* structure of that subtree and move extracted files to their
* proper homes (supressed by the m option).
* Includes the s (skip files) option for use with multiple
* dumps on a single tape.
* 8/29/80 by Mike Litzkow
*
* Modified to work on the new file system and to recover from
* tape read errors.
* 1/19/82 by Kirk McKusick
*
* Full incremental restore running entirely in user code and
* interactive tape browser.
* 1/19/83 by Kirk McKusick
*/
#include "restore.h"
#include <signal.h>
int cvtflag = 0, dflag = 0, vflag = 0, yflag = 0;
int hflag = 1, mflag = 1;
extern int ntrec;
char command = '\0';
long dumpnum = 1;
long volno = 0;
char *dumpmap;
char *clrimap;
ino_t maxino;
time_t dumptime;
time_t dumpdate;
FILE *terminal;
main(argc, argv)
int argc;
char *argv[];
{
register char *cp;
ino_t ino;
char *inputdev = "/dev/rmt8";
char *symtbl = "./restoresymtable";
char name[MAXPATHLEN];
int (*signal())();
extern int onintr();
if (signal(SIGINT, onintr) == SIG_IGN)
(void) signal(SIGINT, SIG_IGN);
if (signal(SIGTERM, onintr) == SIG_IGN)
(void) signal(SIGTERM, SIG_IGN);
setlinebuf(stderr);
if (argc < 2) {
usage:
fprintf(stderr, "Usage:\n%s%s%s%s%s",
"\trestore tfhsvy [file file ...]\n",
"\trestore xfhmsvy [file file ...]\n",
"\trestore ifhmsvy\n",
"\trestore rfsvy\n",
"\trestore Rfsvy\n");
done(1);
}
argv++;
argc -= 2;
command = '\0';
for (cp = *argv++; *cp; cp++) {
switch (*cp) {
case '-':
break;
case 'c':
cvtflag++;
break;
case 'd':
dflag++;
break;
case 'h':
hflag = 0;
break;
case 'm':
mflag = 0;
break;
case 'v':
vflag++;
break;
case 'y':
yflag++;
break;
case 'f':
if (argc < 1) {
fprintf(stderr, "missing device specifier\n");
done(1);
}
inputdev = *argv++;
argc--;
break;
case 's':
/*
* dumpnum (skip to) for multifile dump tapes
*/
if (argc < 1) {
fprintf(stderr, "missing dump number\n");
done(1);
}
dumpnum = atoi(*argv++);
if (dumpnum <= 0) {
fprintf(stderr, "Dump number must be a positive integer\n");
done(1);
}
argc--;
break;
case 'b':
/*
* dump block size
*/
if (argc < 1) {
fprintf(stderr, "missing block size\n");
done(1);
}
ntrec = atoi(*argv++);
if (ntrec <= 0 || (ntrec&1)) {
fprintf(stderr, "Block size must be a positive, even integer\n");
done(1);
}
ntrec /= 2;
argc--;
break;
case 't':
case 'R':
case 'r':
case 'x':
case 'i':
if (command != '\0') {
fprintf(stderr,
"%c and %c are mutually exclusive\n",
*cp, command);
goto usage;
}
command = *cp;
break;
default:
fprintf(stderr, "Bad key character %c\n", *cp);
goto usage;
}
}
if (command == '\0') {
fprintf(stderr, "must specify i, t, r, R, or x\n");
goto usage;
}
setinput(inputdev);
if (argc == 0) {
argc = 1;
*--argv = ".";
}
switch (command) {
/*
* Interactive mode.
*/
case 'i':
setup();
extractdirs(1);
initsymtable((char *)0);
runcmdshell();
done(0);
/*
* Incremental restoration of a file system.
*/
case 'r':
setup();
if (dumptime > 0) {
/*
* This is an incremental dump tape.
*/
vprintf(stdout, "Begin incremental restore\n");
initsymtable(symtbl);
extractdirs(1);
removeoldleaves();
vprintf(stdout, "Calculate node updates.\n");
treescan(".", ROOTINO, nodeupdates);
findunreflinks();
removeoldnodes();
} else {
/*
* This is a level zero dump tape.
*/
vprintf(stdout, "Begin level 0 restore\n");
initsymtable((char *)0);
extractdirs(1);
vprintf(stdout, "Calculate extraction list.\n");
treescan(".", ROOTINO, nodeupdates);
}
createleaves(symtbl);
createlinks();
setdirmodes();
checkrestore();
if (dflag) {
vprintf(stdout, "Verify the directory structure\n");
treescan(".", ROOTINO, verifyfile);
}
dumpsymtable(symtbl, (long)1);
done(0);
/*
* Resume an incremental file system restoration.
*/
case 'R':
setupR();
initsymtable(symtbl);
skipmaps();
skipdirs();
createleaves(symtbl);
createlinks();
setdirmodes();
checkrestore();
dumpsymtable(symtbl, (long)1);
done(0);
/*
* List contents of tape.
*/
case 't':
setup();
extractdirs(0);
while (argc--) {
canon(*argv++, name);
ino = dirlookup(name);
if (ino == 0)
continue;
treescan(name, ino, listfile);
}
done(0);
/*
* Batch extraction of tape contents.
*/
case 'x':
setup();
extractdirs(1);
initsymtable((char *)0);
while (argc--) {
canon(*argv++, name);
ino = dirlookup(name);
if (ino == 0)
continue;
if (mflag)
pathcheck(name);
treescan(name, ino, addfile);
}
createfiles();
createlinks();
setdirmodes();
if (dflag)
checkrestore();
done(0);
}
}
/*
* Read and execute commands from the terminal.
*/
runcmdshell()
{
register struct entry *np;
ino_t ino;
char curdir[MAXPATHLEN];
char name[MAXPATHLEN];
char cmd[BUFSIZ];
canon("/", curdir);
loop:
getcmd(curdir, cmd, name);
switch (cmd[0]) {
/*
* Add elements to the extraction list.
*/
case 'a':
ino = dirlookup(name);
if (ino == 0)
break;
if (mflag)
pathcheck(name);
treescan(name, ino, addfile);
break;
/*
* Change working directory.
*/
case 'c':
ino = dirlookup(name);
if (ino == 0)
break;
if (inodetype(ino) == LEAF) {
fprintf(stderr, "%s: not a directory\n", name);
break;
}
(void) strcpy(curdir, name);
break;
/*
* Delete elements from the extraction list.
*/
case 'd':
np = lookupname(name);
if (np == NIL || (np->e_flags & NEW) == 0) {
fprintf(stderr, "%s: not on extraction list\n", name);
break;
}
treescan(name, np->e_ino, deletefile);
break;
/*
* Extract the requested list.
*/
case 'e':
createfiles();
createlinks();
setdirmodes();
if (dflag)
checkrestore();
volno = 0;
break;
/*
* List available commands.
*/
case 'h':
case '?':
fprintf(stderr, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
"Available commands are:\n",
"\tls [arg] - list directory\n",
"\tcd arg - change directory\n",
"\tpwd - print current directory\n",
"\tadd [arg] - add `arg' to list of",
" files to be extracted\n",
"\tdelete [arg] - delete `arg' from",
" list of files to be extracted\n",
"\textract - extract requested files\n",
"\tquit - immediately exit program\n",
"\tverbose - toggle verbose flag",
" (useful with ``ls'')\n",
"\thelp or `?' - print this list\n",
"If no `arg' is supplied, the current",
" directory is used\n");
break;
/*
* List a directory.
*/
case 'l':
ino = dirlookup(name);
if (ino == 0)
break;
printlist(name, ino);
break;
/*
* Print current directory.
*/
case 'p':
if (curdir[1] == '\0')
fprintf(stderr, "/\n");
else
fprintf(stderr, "%s\n", &curdir[1]);
break;
/*
* Quit.
*/
case 'q':
case 'x':
return;
/*
* Toggle verbose mode.
*/
case 'v':
if (vflag) {
fprintf(stderr, "verbose mode off\n");
vflag = 0;
break;
}
fprintf(stderr, "verbose mode on\n");
vflag++;
break;
/*
* Turn on debugging.
*/
case 'D':
if (dflag) {
fprintf(stderr, "debugging mode off\n");
dflag = 0;
break;
}
fprintf(stderr, "debugging mode on\n");
dflag++;
break;
/*
* Unknown command.
*/
default:
fprintf(stderr, "%s: unknown command; type ? for help\n", cmd);
break;
}
goto loop;
}