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1.1 root 1: /*
2: * Header file for fsck -- File System Check Program
3: *
4: */
5:
6: #include <canon.h>
7: #include <sys/dir.h>
8: #include <sys/fblk.h>
9: #include <sys/filsys.h>
10: #include <sys/ino.h>
11: #include <sys/stat.h>
12: #include <sys/types.h>
13: #include <time.h>
14:
15: #if _I386
16: #define SMALLMODEL 0
17: #else
18: #define SMALLMODEL 1
19: #endif
20:
21: #if HPCOHERENT
22: typedef long fsize_t;
23: #endif
24:
25: /*
26: * Conditional Compilation Flags
27: */
28:
29: #define NOT_ALL_ZERO_INODE /* Dependent on whether or not an inode */
30: #ifdef ALL_ZERO_INODE /* is totally zeroed when unallocated */
31: #undef ALL_ZERO_INODE /* or simply a zero mode and zero link */
32: #endif
33:
34:
35: /*
36: * Definitions and Externs
37: */
38:
39: #define NUL 0 /* true zero ! */
40: #define NULL ((char *)0)
41:
42: #define YES 3 /* default actions */
43: #define NO 2
44: #define ASK 1
45:
46: #define NFILSYS 10 /* max number of file systems */
47: #define MAXCH 20 /* max length of filesys name */
48:
49: #define MAXBADOK 10 /* Max number of bad blocks before excessive */
50: extern int numbad; /* num bad blocks found so far this inode*/
51:
52: #define MAXDUPOK 10 /* Max number of dup blocks */
53: /* in a single inode before excessive */
54: #define DUPTBLSIZE 20 /* Max number of dup referenced blocks */
55: extern daddr_t dupblck[]; /* table of duplicate referenced blocks */
56: extern int totdups; /* number of dup blocks found so far */
57:
58: #define MAXBADFREE 10 /* max bad in free list before abort */
59: #define MAXDUPFREE 10 /* max dup in free list before abort */
60:
61: #define GOOD 1 /* returned by bad() in util.c */
62: #define BAD 0
63:
64: #define TRUE 1 /* errflag possibilities */
65: #define FALSE 0
66: extern int errflag; /* errflag indicates not to do phases */
67:
68: #define OK 1 /* used to indicate excessive bad/dup */
69: #define STOP 0 /* blocks in an inode in phase1.c */
70: #define BAD_DUP 2
71:
72: #define FIRSTIN 2 /* First real inode number */
73:
74: #define ND 10 /* Number of Direct Blocks */
75: #undef NI
76: #define NI 1
77: #define NII 1
78: #define NIII 1
79: #undef NADDR
80: #define NADDR (ND+NI+NII+NIII)
81: extern int offsets[]; /* table of offsets for level of indirection */
82: /* for the blocks in an inode */
83:
84: extern char nextchar(); /* used in util.c */
85: extern int fsfd; /* file system file descriptor */
86: extern int mdaction; /* default action for this invocation */
87: extern int daction; /* default action for current file system */
88: extern int writeflg; /* system write ok or read-only */
89: extern int qflag; /* quiet fsck flag */
90: extern int fflag; /* fast fsck flag */
91: extern int sflag; /* force free list salvation */
92: extern daddr_t fsize; /* file system size in blocks */
93: extern int isize; /* first block not in inode list */
94: /* isize is NOT unsigned so that comparisons */
95: /* with longs will not cast the long to */
96: /* unsigned thus producing confusing results */
97:
98: extern daddr_t totfree; /* running count of total free blocks */
99: extern unsigned ninodes;/* Number of inodes in the files system */
100: extern char *fsname; /* file system name */
101: extern fsize_t pinfo(); /* returns size of file, in phase2.c */
102: extern ino_t lostfound(); /* returns inumber of lost+found dir */
103: extern struct dinode *ptrino(); /* returns a ptr to inode, give number */
104: extern char databuf[]; /* buffer to read in block, used throughout */
105: extern char buf2[]; /* alternate data buffer */
106: extern daddr_t cdbn; /* current block number, used by nextblock() */
107: #define DSIZE (sizeof(struct direct))
108: extern char *lostname; /* name of lost+found directory */
109: extern char *nameit(); /* nameing function for lost dirs and files */
110: extern int depth; /* used during tree traversal in phase2.c */
111: extern struct direct *path[]; /* used during tree traversal in phase2.c */
112: extern char *typename(); /* return string to type of inode */
113: extern struct filsys *sbp; /* Super Block */
114: extern int sbpfix; /* flag for super block fixes */
115: extern struct stat stats; /* used by statit() in util.c */
116: extern dev_t rootdev; /* root device number */
117: extern dev_t fsysrdev; /* file system real device number */
118: extern int mounted; /* flag indicating mountedness of filesystem */
119: extern int changeflg; /* file system modified flag */
120: extern int fixerup; /* flag to rebuild free list */
121: extern char *fixit; /* Prompt message phase[45].c */
122: extern int numfiles; /* num files in system */
123: extern daddr_t imap(); /* function for disk block mapping in util.c */
124: extern fsize_t lostsize; /* Size of files cleared in phase4.c */
125: extern char *tmpfile; /* TMP File name for virtual.c */
126:
127: #define SUCCESS 1 /* used in connect() in phase3.c */
128: #define FAILURE 0
129:
130: #define MODEMASK 0x07
131: #define ALLOCMASK 0x06
132: #define UNALLOC 0x00
133: #define UNKNOWN 0x01
134: #define IDIR 0x02
135: #define IREG 0x03
136: #define ICHR 0x04
137: #define IBLK 0x05
138: #define IPIPE 0x06
139: #define IBAD_IDUP 0x08
140: #define VISITED 0x10
141: #define UNREFDIR 0x20
142: #define CHILDDIR 0x40
143: #define IFREELIST 0x80
144:
145: /*
146: * Macros for tables
147: */
148:
149: #if SMALLMODEL
150: /* Actions for virtual block system */
151: enum vact { testBlock, markBlock, unmarkBlock, grabBlock,
152: testDup, markDup, unmarkDup, setDup,
153: Flags, setFlags, orFlags,
154: linkCtr, incLinkctr, setLinkctr };
155:
156: #define testblock(bn) findblock((unsigned long)(bn), testBlock)
157: #define markblock(bn) findblock((unsigned long)(bn), markBlock)
158: #define unmarkblock(bn) findblock((unsigned long)(bn), unmarkBlock)
159:
160: #define testdup(bn) findblock((unsigned long)(bn), testDup)
161: #define markdup(bn) findblock((unsigned long)(bn), markDup)
162: #define unmarkdup(bn) findblock((unsigned long)(bn), unmarkDup)
163:
164: #define flags(ino) findblock((unsigned long)(ino), Flags)
165: #define setflags(ino, data) findblock((unsigned long)(ino), setFlags, data)
166: #define orflags(ino, data) findblock((unsigned long)(ino), orFlags, data)
167:
168: #define linkctr(ino) findblock((unsigned long)(ino), linkCtr)
169: #define inclinkctr(ino) findblock((unsigned long)(ino), incLinkctr)
170: #define setlinkctr(ino, data) findblock((unsigned long)(ino), setLinkctr, data)
171:
172: #define badblks(ino) (flags(ino)&IBAD_IDUP)
173:
174: #else
175: unsigned short *linkPtr;
176: unsigned char *flagPtr, *blockPtr, *dupPtr;
177:
178: #define bix(bn) (((unsigned long)(bn)) >> LOGNBPC)
179: #define bitm(bn) (1 << ((bn) & (NBPC - 1)))
180:
181: #define testblock(bn) (blockPtr[bix(bn)] & bitm(bn))
182: #define markblock(bn) (blockPtr[bix(bn)] |= bitm(bn))
183: #define unmarkblock(bn) (blockPtr[bix(bn)] ^= bitm(bn))
184:
185: #define testdup(bn) (dupPtr[bix(bn)] & bitm(bn))
186: #define markdup(bn) (dupPtr[bix(bn)] |= bitm(bn))
187: #define unmarkdup(bn) (dupPtr[bix(bn)] ^= bitm(bn))
188:
189: #define flags(ino) flagPtr[ino - 1]
190: #define setflags(ino, data) (flags(ino) = data)
191: #define orflags(ino, data) (flags(ino) |= data)
192:
193: #define linkctr(ino) linkPtr[ino - 1]
194: #define inclinkctr(ino) (++linkctr(ino))
195: #define setlinkctr(ino, data) (linkctr(ino) = data)
196:
197: #define badblks(ino) (flags(ino) & IBAD_IDUP)
198: #endif
199:
200: /*
201: * Miscellany
202: */
203: #define NBPC 8 /* number of bits per character */
204: #define LOGNBPC 3 /* Log2 Number of Bits per Character */
205: #define MAXINTN 255 /* used for interleave table */
206: /* in phase6.c */
207: /*
208: * Stdio Stuff
209: */
210: extern char *malloc();
211: extern char *calloc();
212: #undef putchar(c)
213: #define putchar(c) { char b = c; write(1, &b, 1); }
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