sbin/fsdb/fsdbutil.c

   1 /*      $NetBSD: fsdbutil.c,v 1.21 2008/12/29 20:02:30 mlelstv Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by John T. Kohl.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 __RCSID("$NetBSD: fsdbutil.c,v 1.21 2008/12/29 20:02:30 mlelstv Exp $");
  35 #endif /* not lint */
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <sys/param.h>
  40 #include <sys/time.h>
  41 #include <sys/mount.h>
  42 #include <fcntl.h>
  43 #include <grp.h>
  44 #include <pwd.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <time.h>
  49 #include <unistd.h>
  50 #include <err.h>
  51
  52 #include <ufs/ufs/dinode.h>
  53 #include <ufs/ffs/fs.h>
  54
  55 #include "fsdb.h"
  56 #include "fsck.h"
  57
  58 char  **
  59 crack(char *line, int *argc)
  60 {
  61         static char *argv[8];
  62         int     i;
  63         char   *p, *val;
  64         for (p = line, i = 0; p != NULL && i < 8; i++) {
  65                 while ((val = strsep(&p, " \t\n")) != NULL && *val == '\0')
  66                          /**/ ;
  67                 if (val)
  68                         argv[i] = val;
  69                 else
  70                         break;
  71         }
  72         *argc = i;
  73         return argv;
  74 }
  75
  76 int
  77 argcount(struct cmdtable *cmdp, int argc, char *argv[])
  78 {
  79         if (cmdp->minargc == cmdp->maxargc)
  80                 warnx("command `%s' takes %u arguments", cmdp->cmd,
  81                     cmdp->minargc - 1);
  82         else
  83                 warnx("command `%s' takes from %u to %u arguments",
  84                     cmdp->cmd, cmdp->minargc - 1, cmdp->maxargc - 1);
  85
  86         warnx("usage: %s: %s", cmdp->cmd, cmdp->helptxt);
  87         return 1;
  88 }
  89
  90 void
  91 printstat(const char *cp, ino_t inum, union dinode *dp)
  92 {
  93         struct group *grp;
  94         struct passwd *pw;
  95         time_t  t;
  96         char   *p;
  97         uint64_t size, blocks;
  98         uint16_t mode;
  99         uint32_t rdev;
 100         uint32_t uid, gid;
 101
 102         size = iswap64(DIP(dp, size));
 103         blocks = is_ufs2 ? iswap64(DIP(dp, blocks)) : iswap32(DIP(dp, blocks));
 104         mode = iswap16(DIP(dp, mode));
 105         rdev = iswap32(DIP(dp, rdev));
 106
 107         printf("%s: ", cp);
 108         switch (mode & IFMT) {
 109         case IFDIR:
 110                 puts("directory");
 111                 break;
 112         case IFREG:
 113                 puts("regular file");
 114                 break;
 115         case IFBLK:
 116                 printf("block special (%llu,%llu)",
 117                     (unsigned long long)major(rdev),
 118                     (unsigned long long)minor(rdev));
 119                 break;
 120         case IFCHR:
 121                 printf("character special (%llu,%llu)",
 122                     (unsigned long long)major(rdev),
 123                     (unsigned long long)minor(rdev));
 124                 break;
 125         case IFLNK:
 126                 fputs("symlink", stdout);
 127                 if (size > 0 && size < (uint64_t)sblock->fs_maxsymlinklen &&
 128                     DIP(dp, blocks) == 0) {
 129                         p = is_ufs2 ? (char *)dp->dp2.di_db :
 130                             (char *)dp->dp1.di_db;
 131                         printf(" to `%.*s'\n", (int)size, p);
 132                 } else
 133                         putchar('\n');
 134                 break;
 135         case IFSOCK:
 136                 puts("socket");
 137                 break;
 138         case IFIFO:
 139                 puts("fifo");
 140                 break;
 141         }
 142         printf("I=%llu MODE=%o SIZE=%llu", (unsigned long long)inum, mode,
 143             (unsigned long long)size);
 144         t = is_ufs2 ? iswap64(dp->dp2.di_mtime) : iswap32(dp->dp1.di_mtime);
 145         p = ctime(&t);
 146         printf("\n\tMTIME=%15.15s %4.4s [%d nsec]", &p[4], &p[20],
 147             iswap32(DIP(dp, mtimensec)));
 148         t = is_ufs2 ? iswap64(dp->dp2.di_ctime) : iswap32(dp->dp1.di_ctime);
 149         p = ctime(&t);
 150         printf("\n\tCTIME=%15.15s %4.4s [%d nsec]", &p[4], &p[20],
 151             iswap32(DIP(dp, ctimensec)));
 152         t = is_ufs2 ? iswap64(dp->dp2.di_atime) : iswap32(dp->dp1.di_atime);
 153         p = ctime(&t);
 154         printf("\n\tATIME=%15.15s %4.4s [%d nsec]\n", &p[4], &p[20],
 155             iswap32(DIP(dp,atimensec)));
 156
 157         if (!is_ufs2 && sblock->fs_old_inodefmt < FS_44INODEFMT)
 158                 uid = iswap16(dp->dp1.di_ouid);
 159         else
 160                 uid = iswap32(DIP(dp, uid));
 161         if ((pw = getpwuid(uid)) != NULL)
 162                 printf("OWNER=%s ", pw->pw_name);
 163         else
 164                 printf("OWNUID=%u ", uid);
 165         if (!is_ufs2 && sblock->fs_old_inodefmt < FS_44INODEFMT)
 166                 gid = iswap16(dp->dp1.di_ogid);
 167         else
 168                 gid = iswap32(DIP(dp, gid));
 169         if ((grp = getgrgid(gid)) != NULL)
 170                 printf("GRP=%s ", grp->gr_name);
 171         else
 172                 printf("GID=%u ", gid);
 173
 174         printf("LINKCNT=%hd FLAGS=0x%x BLKCNT=0x%llx GEN=0x%x\n",
 175                 iswap16(DIP(dp, nlink)),
 176             iswap32(DIP(dp, flags)), (unsigned long long)blocks,
 177                 iswap32(DIP(dp, gen)));
 178 }
 179
 180 int
 181 checkactive(void)
 182 {
 183         if (!curinode) {
 184                 warnx("no current inode");
 185                 return 0;
 186         }
 187         return 1;
 188 }
 189
 190 int
 191 checkactivedir(void)
 192 {
 193         if (!curinode) {
 194                 warnx("no current inode");
 195                 return 0;
 196         }
 197         if ((iswap16(DIP(curinode, mode)) & IFMT) != IFDIR) {
 198                 warnx("inode %llu not a directory",
 199                     (unsigned long long)curinum);
 200                 return 0;
 201         }
 202         return 1;
 203 }
 204
 205 int
 206 printactive(void)
 207 {
 208         uint16_t mode;
 209
 210         if (!checkactive())
 211                 return 1;
 212         mode = iswap16(DIP(curinode, mode));
 213         switch (mode & IFMT) {
 214         case IFDIR:
 215         case IFREG:
 216         case IFBLK:
 217         case IFCHR:
 218         case IFLNK:
 219         case IFSOCK:
 220         case IFIFO:
 221                 printstat("current inode", curinum, curinode);
 222                 break;
 223         case 0:
 224                 printf("current inode %llu: unallocated inode\n",
 225                     (unsigned long long)curinum);
 226                 break;
 227         default:
 228                 printf("current inode %llu: screwy itype 0%o (mode 0%o)?\n",
 229                     (unsigned long long)curinum, mode & IFMT, mode);
 230                 break;
 231         }
 232         return 0;
 233 }