345 lines
8.0 KiB
C
345 lines
8.0 KiB
C
/* $NetBSD: fsdbutil.c,v 1.2 1995/10/08 23:18:12 thorpej Exp $ */
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/*
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* Copyright (c) 1995 John T. Kohl
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <ctype.h>
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#include <err.h>
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#include <grp.h>
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#include <pwd.h>
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#include <string.h>
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#include <time.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <sys/ioctl.h>
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#include "fsdb.h"
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#include "fsck.h"
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static int charsperline(void);
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static int printindir(ufs_daddr_t blk, int level, char *bufp);
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static void printblocks(ino_t inum, struct dinode *dp);
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char **
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crack(char *line, int *argc)
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{
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static char *argv[8];
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int i;
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char *p, *val;
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for (p = line, i = 0; p != NULL && i < 8; i++) {
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while ((val = strsep(&p, " \t\n")) != NULL && *val == '\0')
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/**/;
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if (val)
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argv[i] = val;
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else
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break;
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}
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*argc = i;
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return argv;
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}
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char **
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recrack(char *line, int *argc, int argc_max)
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{
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static char *argv[8];
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int i;
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char *p, *val;
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for (p = line, i = 0; p != NULL && i < 8 && i < argc_max - 1; i++) {
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while ((val = strsep(&p, " \t\n")) != NULL && *val == '\0')
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/**/;
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if (val)
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argv[i] = val;
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else
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break;
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}
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argv[i] = argv[i - 1] + strlen(argv[i - 1]) + 1;
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argv[i][strcspn(argv[i], "\n")] = '\0';
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*argc = i + 1;
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return argv;
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}
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int
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argcount(struct cmdtable *cmdp, int argc, char *argv[])
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{
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if (cmdp->minargc == cmdp->maxargc)
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warnx("command `%s' takes %u arguments, got %u", cmdp->cmd,
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cmdp->minargc-1, argc);
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else
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warnx("command `%s' takes from %u to %u arguments",
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cmdp->cmd, cmdp->minargc-1, cmdp->maxargc-1);
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warnx("usage: %s: %s", cmdp->cmd, cmdp->helptxt);
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return 1;
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}
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void
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printstat(const char *cp, ino_t inum, struct dinode *dp)
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{
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struct group *grp;
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struct passwd *pw;
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char *p;
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time_t t;
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printf("%s: ", cp);
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switch (dp->di_mode & IFMT) {
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case IFDIR:
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puts("directory");
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break;
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case IFREG:
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puts("regular file");
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break;
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case IFBLK:
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printf("block special (%d,%d)",
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major(dp->di_rdev), minor(dp->di_rdev));
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break;
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case IFCHR:
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printf("character special (%d,%d)",
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major(dp->di_rdev), minor(dp->di_rdev));
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break;
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case IFLNK:
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fputs("symlink",stdout);
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if (dp->di_size > 0 && dp->di_size < MAXSYMLINKLEN &&
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dp->di_blocks == 0)
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printf(" to `%.*s'\n", (int) dp->di_size, (char *)dp->di_shortlink);
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else
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putchar('\n');
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break;
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case IFSOCK:
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puts("socket");
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break;
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case IFIFO:
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puts("fifo");
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break;
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}
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printf("I=%lu MODE=%o SIZE=%qu", (u_long)inum, dp->di_mode, dp->di_size);
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t = dp->di_mtime;
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p = ctime(&t);
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printf("\n\tMTIME=%15.15s %4.4s [%d nsec]", &p[4], &p[20],
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dp->di_mtimensec);
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t = dp->di_ctime;
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p = ctime(&t);
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printf("\n\tCTIME=%15.15s %4.4s [%d nsec]", &p[4], &p[20],
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dp->di_ctimensec);
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t = dp->di_atime;
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p = ctime(&t);
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printf("\n\tATIME=%15.15s %4.4s [%d nsec]\n", &p[4], &p[20],
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dp->di_atimensec);
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if ((pw = getpwuid(dp->di_uid)))
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printf("OWNER=%s ", pw->pw_name);
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else
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printf("OWNUID=%u ", dp->di_uid);
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if ((grp = getgrgid(dp->di_gid)))
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printf("GRP=%s ", grp->gr_name);
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else
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printf("GID=%u ", dp->di_gid);
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printf("LINKCNT=%hd FLAGS=%#x BLKCNT=%x GEN=%x\n", dp->di_nlink, dp->di_flags,
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dp->di_blocks, dp->di_gen);
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}
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/*
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* Determine the number of characters in a
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* single line.
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*/
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static int
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charsperline(void)
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{
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int columns;
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char *cp;
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struct winsize ws;
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columns = 0;
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if (ioctl(0, TIOCGWINSZ, &ws) != -1)
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columns = ws.ws_col;
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if (columns == 0 && (cp = getenv("COLUMNS")))
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columns = atoi(cp);
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if (columns == 0)
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columns = 80; /* last resort */
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return (columns);
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}
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/*
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* Recursively print a list of indirect blocks.
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*/
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static int
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printindir(ufs_daddr_t blk, int level, char *bufp)
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{
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struct bufarea buf, *bp;
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char tempbuf[32]; /* enough to print an ufs_daddr_t */
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int i, j, cpl, charssofar;
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ufs_daddr_t blkno;
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if (level == 0) {
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/* for the final indirect level, don't use the cache */
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bp = &buf;
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bp->b_un.b_buf = bufp;
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bp->b_prev = bp->b_next = bp;
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initbarea(bp);
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getblk(bp, blk, sblock.fs_bsize);
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} else
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bp = getdatablk(blk, sblock.fs_bsize);
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cpl = charsperline();
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for (i = charssofar = 0; i < NINDIR(&sblock); i++) {
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blkno = bp->b_un.b_indir[i];
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if (blkno == 0) {
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if (level == 0)
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putchar('\n');
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return 0;
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}
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j = sprintf(tempbuf, "%d", blkno);
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if (level == 0) {
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charssofar += j;
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if (charssofar >= cpl - 2) {
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putchar('\n');
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charssofar = j;
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}
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}
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fputs(tempbuf, stdout);
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if (level == 0) {
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printf(", ");
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charssofar += 2;
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} else {
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printf(" =>\n");
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if (printindir(blkno, level - 1, bufp) == 0)
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return 0;
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}
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}
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if (level == 0)
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putchar('\n');
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return 1;
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}
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/*
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* Print the block pointers for one inode.
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*/
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static void
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printblocks(ino_t inum, struct dinode *dp)
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{
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char *bufp;
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int i, j, nfrags;
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long ndb, offset;
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printf("Blocks for inode %d:\n", inum);
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printf("Direct blocks:\n");
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ndb = howmany(dp->di_size, sblock.fs_bsize);
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for (i = 0; i < NDADDR; i++) {
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if (dp->di_db[i] == 0) {
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putchar('\n');
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return;
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}
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if (i > 0)
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printf(", ");
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printf("%d", dp->di_db[i]);
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if (--ndb == 0 && (offset = blkoff(&sblock, dp->di_size)) != 0) {
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nfrags = numfrags(&sblock, fragroundup(&sblock, offset));
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printf(" (%d frag%s)", nfrags, nfrags > 1? "s": "");
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}
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}
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putchar('\n');
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if (dp->di_ib[0] == 0)
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return;
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bufp = malloc((unsigned int)sblock.fs_bsize);
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if (bufp == 0)
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errx(EEXIT, "cannot allocate indirect block buffer");
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printf("Indirect blocks:\n");
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for (i = 0; i < NIADDR; i++)
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if (printindir(dp->di_ib[i], i, bufp) == 0)
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break;
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free(bufp);
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}
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int
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checkactive(void)
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{
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if (!curinode) {
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warnx("no current inode\n");
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return 0;
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}
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return 1;
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}
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int
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checkactivedir(void)
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{
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if (!curinode) {
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warnx("no current inode\n");
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return 0;
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}
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if ((curinode->di_mode & IFMT) != IFDIR) {
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warnx("inode %d not a directory", curinum);
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return 0;
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}
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return 1;
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}
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int
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printactive(int doblocks)
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{
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if (!checkactive())
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return 1;
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switch (curinode->di_mode & IFMT) {
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case IFDIR:
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case IFREG:
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case IFBLK:
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case IFCHR:
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case IFLNK:
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case IFSOCK:
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case IFIFO:
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if (doblocks)
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printblocks(curinum, curinode);
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else
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printstat("current inode", curinum, curinode);
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break;
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case 0:
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printf("current inode %d: unallocated inode\n", curinum);
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break;
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default:
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printf("current inode %d: screwy itype 0%o (mode 0%o)?\n",
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curinum, curinode->di_mode & IFMT, curinode->di_mode);
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break;
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}
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return 0;
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}
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