NetBSD/sbin/fsdb/fsdb.c

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1998-05-20 14:01:11 +04:00
/* $NetBSD: fsdb.c,v 1.15 1998/05/20 10:01:11 enami Exp $ */
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/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by John T. Kohl.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <sys/cdefs.h>
#ifndef lint
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__RCSID("$NetBSD: fsdb.c,v 1.15 1998/05/20 10:01:11 enami Exp $");
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/mount.h>
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#include <ctype.h>
#include <fcntl.h>
#include <grp.h>
#include <histedit.h>
#include <limits.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <err.h>
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#include <ufs/ufs/dinode.h>
#include <ufs/ufs/dir.h>
#include <ufs/ffs/fs.h>
#include <ufs/ffs/ffs_extern.h>
#include "fsdb.h"
#include "fsck.h"
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#include "extern.h"
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extern char *__progname; /* from crt0.o */
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int main __P((int, char *[]));
static void usage __P((void));
static int cmdloop __P((void));
static int helpfn __P((int, char *[]));
static char *prompt __P((EditLine *));
static int scannames __P((struct inodesc *));
static int dolookup __P((char *));
static int chinumfunc __P((struct inodesc *));
static int chnamefunc __P((struct inodesc *));
static int dotime __P((char *, int32_t *, int32_t *));
int returntosingle = 0;
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struct dinode *curinode;
ino_t curinum;
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static void
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usage()
{
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errx(1, "usage: %s [-d] -f <fsname>", __progname);
}
/*
* We suck in lots of fsck code, and just pick & choose the stuff we want.
*
* fsreadfd is set up to read from the file system, fswritefd to write to
* the file system.
*/
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int
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main(argc, argv)
int argc;
char *argv[];
{
int ch, rval;
char *fsys = NULL;
while ((ch = getopt(argc, argv, "f:d")) != -1) {
switch (ch) {
case 'f':
fsys = optarg;
break;
case 'd':
debug++;
break;
default:
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usage();
}
}
if (fsys == NULL)
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usage();
endian = 0;
if (!setup(fsys))
errx(1, "cannot set up file system `%s'", fsys);
printf("Editing file system `%s'\nLast Mounted on %s\n", fsys,
sblock->fs_fsmnt);
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rval = cmdloop();
sblock->fs_clean = 0; /* mark it dirty */
sbdirty();
markclean = 0;
ckfini();
printf("*** FILE SYSTEM MARKED DIRTY\n");
printf("*** BE SURE TO RUN FSCK TO CLEAN UP ANY DAMAGE\n");
printf("*** IF IT WAS MOUNTED, RE-MOUNT WITH -u -o reload\n");
exit(rval);
}
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#define CMDFUNC(func) static int func __P((int argc, char *argv[]))
#define CMDFUNCSTART(func) static int func(argc, argv) \
int argc; \
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char *argv[];
CMDFUNC(helpfn);
CMDFUNC(focus); /* focus on inode */
CMDFUNC(active); /* print active inode */
CMDFUNC(focusname); /* focus by name */
CMDFUNC(zapi); /* clear inode */
CMDFUNC(uplink); /* incr link */
CMDFUNC(downlink); /* decr link */
CMDFUNC(linkcount); /* set link count */
CMDFUNC(quit); /* quit */
CMDFUNC(ls); /* list directory */
CMDFUNC(rm); /* remove name */
CMDFUNC(ln); /* add name */
CMDFUNC(newtype); /* change type */
CMDFUNC(chmode); /* change mode */
CMDFUNC(chlen); /* change length */
CMDFUNC(chaflags); /* change flags */
CMDFUNC(chgen); /* change generation */
CMDFUNC(chowner); /* change owner */
CMDFUNC(chgroup); /* Change group */
CMDFUNC(back); /* pop back to last ino */
CMDFUNC(chmtime); /* Change mtime */
CMDFUNC(chctime); /* Change ctime */
CMDFUNC(chatime); /* Change atime */
CMDFUNC(chinum); /* Change inode # of dirent */
CMDFUNC(chname); /* Change dirname of dirent */
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static struct cmdtable cmds[] = {
{"help", "Print out help", 1, 1, helpfn},
{"?", "Print out help", 1, 1, helpfn},
{"inode", "Set active inode to INUM", 2, 2, focus},
{"clri", "Clear inode INUM", 2, 2, zapi},
{"lookup", "Set active inode by looking up NAME", 2, 2, focusname},
{"cd", "Set active inode by looking up NAME", 2, 2, focusname},
{"back", "Go to previous active inode", 1, 1, back},
{"active", "Print active inode", 1, 1, active},
{"print", "Print active inode", 1, 1, active},
{"uplink", "Increment link count", 1, 1, uplink},
{"downlink", "Decrement link count", 1, 1, downlink},
{"linkcount", "Set link count to COUNT", 2, 2, linkcount},
{"ls", "List current inode as directory", 1, 1, ls},
{"rm", "Remove NAME from current inode directory", 2, 2, rm},
{"del", "Remove NAME from current inode directory", 2, 2, rm},
{"ln", "Hardlink INO into current inode directory as NAME", 3, 3, ln},
{"chinum", "Change dir entry number INDEX to INUM", 3, 3, chinum},
{"chname", "Change dir entry number INDEX to NAME", 3, 3, chname},
{"chtype", "Change type of current inode to TYPE", 2, 2, newtype},
{"chmod", "Change mode of current inode to MODE", 2, 2, chmode},
{"chown", "Change owner of current inode to OWNER", 2, 2, chowner},
{"chlen", "Change length of current inode to LENGTH", 2, 2, chlen},
{"chgrp", "Change group of current inode to GROUP", 2, 2, chgroup},
{"chflags", "Change flags of current inode to FLAGS", 2, 2, chaflags},
{"chgen", "Change generation number of current inode to GEN", 2, 2,
chgen},
{"mtime", "Change mtime of current inode to MTIME", 2, 2, chmtime},
{"ctime", "Change ctime of current inode to CTIME", 2, 2, chctime},
{"atime", "Change atime of current inode to ATIME", 2, 2, chatime},
{"quit", "Exit", 1, 1, quit},
{"q", "Exit", 1, 1, quit},
{"exit", "Exit", 1, 1, quit},
{NULL, 0, 0, 0},
};
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static int
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helpfn(argc, argv)
int argc;
char *argv[];
{
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struct cmdtable *cmdtp;
printf("Commands are:\n%-10s %5s %5s %s\n",
"command", "min argc", "max argc", "what");
for (cmdtp = cmds; cmdtp->cmd; cmdtp++)
printf("%-10s %5u %5u %s\n",
cmdtp->cmd, cmdtp->minargc, cmdtp->maxargc, cmdtp->helptxt);
return 0;
}
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static char *
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prompt(el)
EditLine *el;
{
static char pstring[64];
snprintf(pstring, sizeof(pstring), "fsdb (inum: %d)> ", curinum);
return pstring;
}
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static int
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cmdloop()
{
char *line;
const char *elline;
int cmd_argc, rval = 0, known;
#define scratch known
char **cmd_argv;
struct cmdtable *cmdp;
History *hist;
HistEvent he;
EditLine *elptr;
curinode = ginode(ROOTINO);
curinum = ROOTINO;
printactive();
hist = history_init();
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history(hist, &he, H_SETSIZE, 100); /* 100 elt history buffer */
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elptr = el_init(__progname, stdin, stdout, stderr);
el_set(elptr, EL_EDITOR, "emacs");
el_set(elptr, EL_PROMPT, prompt);
el_set(elptr, EL_HIST, history, hist);
el_source(elptr, NULL);
while ((elline = el_gets(elptr, &scratch)) != NULL && scratch != 0) {
if (debug)
printf("command `%s'\n", elline);
history(hist, &he, H_ENTER, elline);
line = strdup(elline);
cmd_argv = crack(line, &cmd_argc);
if (cmd_argc) {
/*
* el_parse returns -1 to signal that it's not been
* handled internally.
*/
if (el_parse(elptr, cmd_argc, cmd_argv) != -1)
continue;
known = 0;
for (cmdp = cmds; cmdp->cmd; cmdp++) {
if (!strcmp(cmdp->cmd, cmd_argv[0])) {
if (cmd_argc >= cmdp->minargc &&
cmd_argc <= cmdp->maxargc)
rval =
(*cmdp->handler)(cmd_argc,
cmd_argv);
else
rval = argcount(cmdp, cmd_argc,
cmd_argv);
known = 1;
break;
}
}
if (!known)
warnx("unknown command `%s'", cmd_argv[0]),
rval = 1;
} else
rval = 0;
free(line);
if (rval < 0)
return rval;
if (rval)
warnx("rval was %d", rval);
}
el_end(elptr);
history_end(hist);
return rval;
}
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static ino_t ocurrent;
#define GETINUM(ac,inum) inum = strtoul(argv[ac], &cp, 0); \
if (inum < ROOTINO || inum > maxino || cp == argv[ac] || *cp != '\0' ) { \
printf("inode %d out of range; range is [%d,%d]\n", \
inum, ROOTINO, maxino); \
return 1; \
}
/*
* Focus on given inode number
*/
CMDFUNCSTART(focus)
{
ino_t inum;
char *cp;
GETINUM(1, inum);
curinode = ginode(inum);
ocurrent = curinum;
curinum = inum;
printactive();
return 0;
}
CMDFUNCSTART(back)
{
curinum = ocurrent;
curinode = ginode(curinum);
printactive();
return 0;
}
CMDFUNCSTART(zapi)
{
ino_t inum;
struct dinode *dp;
char *cp;
GETINUM(1, inum);
dp = ginode(inum);
clearinode(dp);
inodirty();
if (curinode) /* re-set after potential change */
curinode = ginode(curinum);
return 0;
}
CMDFUNCSTART(active)
{
printactive();
return 0;
}
CMDFUNCSTART(quit)
{
return -1;
}
CMDFUNCSTART(uplink)
{
if (!checkactive())
return 1;
curinode->di_nlink = iswap16(iswap16(curinode->di_nlink) + 1);
printf("inode %d link count now %d\n", curinum,
iswap16(curinode->di_nlink));
inodirty();
return 0;
}
CMDFUNCSTART(downlink)
{
if (!checkactive())
return 1;
curinode->di_nlink = iswap16(iswap16(curinode->di_nlink) - 1);
printf("inode %d link count now %d\n", curinum,
iswap16(curinode->di_nlink));
inodirty();
return 0;
}
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static const char *typename[] = {
"unknown",
"fifo",
"char special",
"unregistered #3",
"directory",
"unregistered #5",
"blk special",
"unregistered #7",
"regular",
"unregistered #9",
"symlink",
"unregistered #11",
"socket",
"unregistered #13",
"whiteout",
};
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static int slot;
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static int
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scannames(idesc)
struct inodesc *idesc;
{
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struct direct *dirp = idesc->id_dirp;
printf("slot %d ino %d reclen %d: %s, `%.*s'\n",
slot++, iswap32(dirp->d_ino), iswap16(dirp->d_reclen),
typename[dirp->d_type],
dirp->d_namlen, dirp->d_name);
return (KEEPON);
}
CMDFUNCSTART(ls)
{
struct inodesc idesc;
checkactivedir(); /* let it go on anyway */
slot = 0;
idesc.id_number = curinum;
idesc.id_func = scannames;
idesc.id_type = DATA;
idesc.id_fix = IGNORE;
ckinode(curinode, &idesc);
curinode = ginode(curinum);
return 0;
}
static int
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dolookup(name)
char *name;
{
struct inodesc idesc;
if (!checkactivedir())
return 0;
idesc.id_number = curinum;
idesc.id_func = findino;
idesc.id_name = name;
idesc.id_type = DATA;
idesc.id_fix = IGNORE;
if (ckinode(curinode, &idesc) & FOUND) {
curinum = idesc.id_parent;
curinode = ginode(curinum);
printactive();
return 1;
} else {
warnx("name `%s' not found in current inode directory", name);
return 0;
}
}
CMDFUNCSTART(focusname)
{
char *p, *val;
if (!checkactive())
return 1;
ocurrent = curinum;
if (argv[1][0] == '/') {
curinum = ROOTINO;
curinode = ginode(ROOTINO);
} else {
if (!checkactivedir())
return 1;
}
for (p = argv[1]; p != NULL;) {
while ((val = strsep(&p, "/")) != NULL && *val == '\0');
if (val) {
printf("component `%s': ", val);
fflush(stdout);
if (!dolookup(val)) {
curinode = ginode(curinum);
return (1);
}
}
}
return 0;
}
CMDFUNCSTART(ln)
{
ino_t inum;
int rval;
char *cp;
GETINUM(1, inum);
if (!checkactivedir())
return 1;
rval = makeentry(curinum, inum, argv[2]);
if (rval)
printf("Ino %d entered as `%s'\n", inum, argv[2]);
else
printf("could not enter name? weird.\n");
curinode = ginode(curinum);
return rval;
}
CMDFUNCSTART(rm)
{
int rval;
if (!checkactivedir())
return 1;
rval = changeino(curinum, argv[1], 0);
if (rval & ALTERED) {
printf("Name `%s' removed\n", argv[1]);
return 0;
} else {
printf("could not remove name? weird.\n");
return 1;
}
}
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static long slotcount, desired;
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static int
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chinumfunc(idesc)
struct inodesc *idesc;
{
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struct direct *dirp = idesc->id_dirp;
if (slotcount++ == desired) {
dirp->d_ino = iswap32(idesc->id_parent);
return STOP | ALTERED | FOUND;
}
return KEEPON;
}
CMDFUNCSTART(chinum)
{
char *cp;
ino_t inum;
struct inodesc idesc;
slotcount = 0;
if (!checkactivedir())
return 1;
GETINUM(2, inum);
desired = strtol(argv[1], &cp, 0);
if (cp == argv[1] || *cp != '\0' || desired < 0) {
printf("invalid slot number `%s'\n", argv[1]);
return 1;
}
idesc.id_number = curinum;
idesc.id_func = chinumfunc;
idesc.id_fix = IGNORE;
idesc.id_type = DATA;
idesc.id_parent = inum; /* XXX convenient hiding place */
if (ckinode(curinode, &idesc) & FOUND)
return 0;
else {
warnx("no %sth slot in current directory", argv[1]);
return 1;
}
}
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static int
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chnamefunc(idesc)
struct inodesc *idesc;
{
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struct direct *dirp = idesc->id_dirp;
struct direct testdir;
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if (slotcount++ == desired) {
/* will name fit? */
testdir.d_namlen = strlen(idesc->id_name);
if (DIRSIZ(NEWDIRFMT, &testdir, 0) <= iswap16(dirp->d_reclen)) {
dirp->d_namlen = testdir.d_namlen;
strcpy(dirp->d_name, idesc->id_name);
return STOP | ALTERED | FOUND;
} else
return STOP | FOUND; /* won't fit, so give up */
}
return KEEPON;
}
CMDFUNCSTART(chname)
{
int rval;
char *cp;
struct inodesc idesc;
slotcount = 0;
if (!checkactivedir())
return 1;
desired = strtoul(argv[1], &cp, 0);
if (cp == argv[1] || *cp != '\0') {
printf("invalid slot number `%s'\n", argv[1]);
return 1;
}
idesc.id_number = curinum;
idesc.id_func = chnamefunc;
idesc.id_fix = IGNORE;
idesc.id_type = DATA;
idesc.id_name = argv[2];
rval = ckinode(curinode, &idesc);
if ((rval & (FOUND | ALTERED)) == (FOUND | ALTERED))
return 0;
else
if (rval & FOUND) {
warnx("new name `%s' does not fit in slot %s\n",
argv[2], argv[1]);
return 1;
} else {
warnx("no %sth slot in current directory", argv[1]);
return 1;
}
}
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static struct typemap {
const char *typename;
int typebits;
} typenamemap[] = {
{ "file", IFREG },
{ "dir", IFDIR },
{ "socket", IFSOCK },
{ "fifo", IFIFO },
};
CMDFUNCSTART(newtype)
{
int type;
struct typemap *tp;
if (!checkactive())
return 1;
type = iswap16(curinode->di_mode) & IFMT;
for (tp = typenamemap;
tp < &typenamemap[sizeof(typemap) / sizeof(*typemap)];
tp++) {
if (!strcmp(argv[1], tp->typename)) {
printf("setting type to %s\n", tp->typename);
type = tp->typebits;
break;
}
}
if (tp == &typenamemap[sizeof(typemap) / sizeof(*typemap)]) {
warnx("type `%s' not known", argv[1]);
warnx("try one of `file', `dir', `socket', `fifo'");
return 1;
}
curinode->di_mode = iswap16((iswap16(curinode->di_mode) & ~IFMT) | type);
inodirty();
printactive();
return 0;
}
CMDFUNCSTART(chmode)
{
long modebits;
char *cp;
if (!checkactive())
return 1;
modebits = strtol(argv[1], &cp, 8);
if (cp == argv[1] || *cp != '\0') {
warnx("bad modebits `%s'", argv[1]);
return 1;
}
curinode->di_mode =
iswap16((iswap16(curinode->di_mode) & ~07777) | modebits);
inodirty();
printactive();
return 0;
}
CMDFUNCSTART(chlen)
{
long len;
char *cp;
if (!checkactive())
return 1;
len = strtol(argv[1], &cp, 0);
if (cp == argv[1] || *cp != '\0' || len < 0) {
warnx("bad length '%s'", argv[1]);
return 1;
}
curinode->di_size = iswap64(len);
inodirty();
printactive();
return 0;
}
CMDFUNCSTART(chaflags)
{
u_long flags;
char *cp;
if (!checkactive())
return 1;
flags = strtoul(argv[1], &cp, 0);
if (cp == argv[1] || *cp != '\0') {
warnx("bad flags `%s'", argv[1]);
return 1;
}
if (flags > UINT_MAX) {
warnx("flags set beyond 32-bit range of field (0x%lx)\n",
flags);
return (1);
}
curinode->di_flags = iswap32(flags);
inodirty();
printactive();
return 0;
}
CMDFUNCSTART(chgen)
{
long gen;
char *cp;
if (!checkactive())
return 1;
gen = strtol(argv[1], &cp, 0);
if (cp == argv[1] || *cp != '\0') {
warnx("bad gen `%s'", argv[1]);
return 1;
}
if (gen > INT_MAX || gen < INT_MIN) {
warnx("gen set beyond 32-bit range of field (0x%lx)\n", gen);
return (1);
}
curinode->di_gen = iswap32(gen);
inodirty();
printactive();
return 0;
}
CMDFUNCSTART(linkcount)
{
int lcnt;
char *cp;
if (!checkactive())
return 1;
lcnt = strtol(argv[1], &cp, 0);
if (cp == argv[1] || *cp != '\0') {
warnx("bad link count `%s'", argv[1]);
return 1;
}
if (lcnt > USHRT_MAX || lcnt < 0) {
warnx("max link count is %d\n", USHRT_MAX);
return 1;
}
curinode->di_nlink = iswap16(lcnt);
inodirty();
printactive();
return 0;
}
CMDFUNCSTART(chowner)
{
unsigned long uid;
char *cp;
struct passwd *pwd;
if (!checkactive())
return 1;
uid = strtoul(argv[1], &cp, 0);
if (cp == argv[1] || *cp != '\0') {
/* try looking up name */
if ((pwd = getpwnam(argv[1])) != 0) {
uid = pwd->pw_uid;
} else {
warnx("bad uid `%s'", argv[1]);
return 1;
}
}
curinode->di_uid = iswap32(uid);
inodirty();
printactive();
return 0;
}
CMDFUNCSTART(chgroup)
{
unsigned long gid;
char *cp;
struct group *grp;
if (!checkactive())
return 1;
gid = strtoul(argv[1], &cp, 0);
if (cp == argv[1] || *cp != '\0') {
if ((grp = getgrnam(argv[1])) != 0) {
gid = grp->gr_gid;
} else {
warnx("bad gid `%s'", argv[1]);
return 1;
}
}
curinode->di_gid = iswap32(gid);
inodirty();
printactive();
return 0;
}
1996-09-28 23:30:35 +04:00
static int
1995-10-09 02:18:08 +03:00
dotime(name, rsec, rnsec)
char *name;
1995-10-09 02:18:08 +03:00
int32_t *rsec, *rnsec;
{
char *p, *val;
struct tm t;
int32_t sec;
int32_t nsec;
p = strchr(name, '.');
if (p) {
*p = '\0';
nsec = strtoul(++p, &val, 0);
if (val == p || *val != '\0' || nsec >= 1000000000 || nsec < 0) {
warnx("invalid nanoseconds");
goto badformat;
}
} else
nsec = 0;
if (strlen(name) != 14) {
badformat:
warnx("date format: YYYYMMDDHHMMSS[.nsec]");
return 1;
}
for (p = name; *p; p++)
if (*p < '0' || *p > '9')
goto badformat;
p = name;
#define VAL() ((*p++) - '0')
t.tm_year = VAL();
t.tm_year = VAL() + t.tm_year * 10;
t.tm_year = VAL() + t.tm_year * 10;
t.tm_year = VAL() + t.tm_year * 10 - 1900;
t.tm_mon = VAL();
t.tm_mon = VAL() + t.tm_mon * 10 - 1;
t.tm_mday = VAL();
t.tm_mday = VAL() + t.tm_mday * 10;
t.tm_hour = VAL();
t.tm_hour = VAL() + t.tm_hour * 10;
t.tm_min = VAL();
t.tm_min = VAL() + t.tm_min * 10;
t.tm_sec = VAL();
t.tm_sec = VAL() + t.tm_sec * 10;
t.tm_isdst = -1;
sec = mktime(&t);
if (sec == -1) {
warnx("date/time out of range");
return 1;
}
*rsec = iswap32(sec);
*rnsec = iswap32(nsec);
return 0;
}
CMDFUNCSTART(chmtime)
{
if (dotime(argv[1], &curinode->di_ctime, &curinode->di_ctimensec))
return 1;
inodirty();
printactive();
return 0;
}
CMDFUNCSTART(chatime)
{
if (dotime(argv[1], &curinode->di_ctime, &curinode->di_ctimensec))
return 1;
inodirty();
printactive();
return 0;
}
CMDFUNCSTART(chctime)
{
if (dotime(argv[1], &curinode->di_ctime, &curinode->di_ctimensec))
return 1;
inodirty();
printactive();
return 0;
}