| 1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. |
| 3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. |
| 5 | */ |
| 6 | |
| 7 | #ifndef lint |
| 8 | static char sccsid[] = "@(#)pass4.c 5.3 (Berkeley) %G%"; |
| 9 | #endif not lint |
| 10 | |
| 11 | #include <sys/param.h> |
| 12 | #include <sys/inode.h> |
| 13 | #include <sys/fs.h> |
| 14 | #include "fsck.h" |
| 15 | |
| 16 | int pass4check(); |
| 17 | |
| 18 | pass4() |
| 19 | { |
| 20 | register ino_t inumber; |
| 21 | register struct zlncnt *zlnp; |
| 22 | struct inodesc idesc; |
| 23 | int n; |
| 24 | |
| 25 | bzero((char *)&idesc, sizeof(struct inodesc)); |
| 26 | idesc.id_type = ADDR; |
| 27 | idesc.id_func = pass4check; |
| 28 | for (inumber = ROOTINO; inumber <= lastino; inumber++) { |
| 29 | idesc.id_number = inumber; |
| 30 | switch (statemap[inumber]) { |
| 31 | |
| 32 | case FSTATE: |
| 33 | case DFOUND: |
| 34 | n = lncntp[inumber]; |
| 35 | if (n) |
| 36 | adjust(&idesc, (short)n); |
| 37 | else { |
| 38 | for (zlnp = zlnhead; zlnp; zlnp = zlnp->next) |
| 39 | if (zlnp->zlncnt == inumber) { |
| 40 | zlnp->zlncnt = zlnhead->zlncnt; |
| 41 | zlnp = zlnhead; |
| 42 | zlnhead = zlnhead->next; |
| 43 | free(zlnp); |
| 44 | clri(&idesc, "UNREF", 1); |
| 45 | break; |
| 46 | } |
| 47 | } |
| 48 | break; |
| 49 | |
| 50 | case DSTATE: |
| 51 | clri(&idesc, "UNREF", 1); |
| 52 | break; |
| 53 | |
| 54 | case DCLEAR: |
| 55 | case FCLEAR: |
| 56 | clri(&idesc, "BAD/DUP", 1); |
| 57 | break; |
| 58 | |
| 59 | case USTATE: |
| 60 | break; |
| 61 | |
| 62 | default: |
| 63 | errexit("BAD STATE %d FOR INODE I=%d", |
| 64 | statemap[inumber], inumber); |
| 65 | } |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | pass4check(idesc) |
| 70 | register struct inodesc *idesc; |
| 71 | { |
| 72 | register struct dups *dlp; |
| 73 | int nfrags, res = KEEPON; |
| 74 | daddr_t blkno = idesc->id_blkno; |
| 75 | |
| 76 | for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { |
| 77 | if (outrange(blkno, 1)) { |
| 78 | res = SKIP; |
| 79 | } else if (getbmap(blkno)) { |
| 80 | for (dlp = duplist; dlp; dlp = dlp->next) { |
| 81 | if (dlp->dup != blkno) |
| 82 | continue; |
| 83 | dlp->dup = duplist->dup; |
| 84 | dlp = duplist; |
| 85 | duplist = duplist->next; |
| 86 | free(dlp); |
| 87 | break; |
| 88 | } |
| 89 | if (dlp == 0) { |
| 90 | clrbmap(blkno); |
| 91 | n_blks--; |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | return (res); |
| 96 | } |