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authorMichael I. Bushnell <mib@gnu.org>1994-10-07 19:23:43 +0000
committerMichael I. Bushnell <mib@gnu.org>1994-10-07 19:23:43 +0000
commita742287f5fad240b595935752c676e431a071a41 (patch)
treeb4e5c5365323d5aa689c276bd53712bccc3d07dd /ufs-fsck
parenta38ebb7f8b1310a08523549f83c1d1a670144294 (diff)
Initial revision
Diffstat (limited to 'ufs-fsck')
-rw-r--r--ufs-fsck/pass1.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/ufs-fsck/pass1.c b/ufs-fsck/pass1.c
new file mode 100644
index 00000000..650af963
--- /dev/null
+++ b/ufs-fsck/pass1.c
@@ -0,0 +1,95 @@
+/* Pass one of GNU fsck
+ Copyright (C) 1994 Free Software Foundation, Inc.
+ Written by Michael I. Bushnell.
+
+ This file is part of the GNU Hurd.
+
+ The GNU Hurd is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ The GNU Hurd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+
+
+#include "fsck.h"
+
+/* Find all the blocks in use by files and filesystem reserved blocks.
+ Set them in the global block map. For each file, if a block is found
+ allocated twice, then record the block and inode in DUPLIST.
+ Set ISTATE to be USTATE, FSTATE, or DSTATE as appropriate */
+pass1 ()
+{
+ ino_t number; /* inode number */
+ ino_t i; /* cg-relative inode number */
+ int cg; /* cylinder group number */
+
+ /* Account for blocks used by meta data */
+ for (cg = 0, cg < sblock.fs_ncg; cg++)
+ {
+ daddr_t firstdata, firstcgblock, bno;
+
+ /* Each cylinder group past the first reserves data
+ from its cylinder group copy to (but not including)
+ the first datablock.
+
+ The first, however, reserves from the very front of the
+ cylinder group (thus including the boot block), and it also
+ reserves the data blocks holding the csum information. */
+ firstdata = cgdmin (&sblock, cg);
+ if (cg == 0)
+ {
+ firstcgblock = cgbase (&sblock, cg);
+ firstdata += howmany (sblock.fs_cssize, sblock.fs_fsize);
+ }
+ else
+ firstdata = cgsblock (&sblock, cg);
+
+ /* Mark the blocks set */
+ for (bno = firstcgblock; bno < firstdata; bno++)
+ set_block_used (bno):
+ }
+
+ /* Loop through each inode, doing initial checks */
+ for (number = 0, cg = 0; cg < sblock.fs_ncg; cg++)
+ for (i = 0; i < sblock.fs_ipg; i++, number++)
+ {
+ struct dinode *dp;
+ mode_t mode;
+
+ dp = getinode (number);
+ mode = DI_MODE (dp) & IFMT;
+
+ /* If the node is not allocated, then make sure it's
+ properly clear */
+ if (mode == 0)
+ {
+ if (bcmp (dp->di_db, zino.di_db, NDADDR * sizeof (daddr_t))
+ || bcmp (dp->di_ib, zino->di_ix, NIADDR * sizeof (daddr_t))
+ || dp->di_trans
+ || DI_MODE (dp)
+ || dp->di_size)
+ {
+ pwarn ("PARTIALLY ALLOCATED INODE I=%lu", number);
+ if (preen || reply ("CLEAR"))
+ {
+ if (preen)
+ printf (" (CLEARED)\n");
+ clear_inode (dp);
+ }
+
+
+
+
+
+
+
+