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Annotation of researchv10no/cmd/worm/worm.h, revision 1.1.1.1

1.1       root        1: #include       <errno.h>
                      2: 
                      3: #define                SMAGIC          0x21746967
                      4: #define                DMAGIC          0x3A746967
                      5: 
                      6: typedef struct Superblock
                      7: {
                      8:        long magic;             /* magic number for Superblock */
                      9:        unsigned short blocksize;       /* physical size of blocks */
                     10:        short version;          /* type of superblock */
                     11:        long nblocks;           /* number of blocks on device */
                     12:        long zero;              /* first logical data block */
                     13:        long nfree;             /* number of free blocks */
                     14:        long ninodes;           /* number of inodes */
                     15:        long ninochars;         /* number of bytes of inode names */
                     16:        long binodes;           /* start of inodes */
                     17:        long nextffree;         /* next free file block */
                     18:        long nextsb;            /* next superblock */
                     19:        short fd;               /* fildes for device (in core) */
                     20:        char vol_id[128];       /* name the disk can be mounted as */
                     21:        char comment[128];      /* comments */
                     22:        long myblock;           /* where this superblock is */
                     23:        long nF;                /* bytes for .F (VBTREE) */
                     24:        long nT;                /* bytes for .T (VBTREE) */
                     25:        long ctime;             /* create time for this superblock */
                     26: } Superblock;
                     27: 
                     28: typedef struct Inode
                     29: {
                     30:        long magic;             /* magic number for Dirent */
                     31:        long block;             /* starting block of file */
                     32:        long nbytes;            /* bytes in file */
                     33:        long ctime;             /* creation time */
                     34:        union {
                     35:                char *n;        /* core - name */
                     36:                long o;         /* disk - offset into chars block */
                     37:        } name;                 /* filename */
                     38:        long pad1;              /* to 32 bytes */
                     39:        short mode;             /* a la stat */
                     40:        short uid;              /* owner */
                     41:        short gid;              /* owner */
                     42:        short pad2;             /* to 32 bytes */
                     43: } Inode;
                     44: #define                IPERB           (s->blocksize/sizeof(Inode))
                     45: 
                     46: extern char *openinode(), *lkwri(), *lkwsb();
                     47: extern char *mapdev();
                     48: extern Inode *(*inodefn)();
                     49: extern void (*traversefn)();
                     50: extern long numinodes;
                     51: extern long numnamechars;
                     52: extern char *timenow();
                     53: 
                     54: #define        inodeof(s)      (*inodefn)(s)
                     55: #define        inodetraverse(fn)       (*traversefn)(fn)
                     56: 
                     57: #define        VLINK   1       /* linked list version */
                     58: #define        VBTREE  2       /* cbt */
                     59: 
                     60: #define        NBLKS(s, x)     (long)(((s)->blocksize-1+(x))/(s)->blocksize)
                     61: 
                     62: /*
                     63:        flags for openinode
                     64: */
                     65: #define        DO_INODE        1
                     66: #define        SPIN_DOWN       2
                     67: 
                     68: #define        BIGBLOCK        (60*1024L)      /* max read/write */
                     69: 
                     70: /*
                     71:        in.c declarations
                     72: */
                     73: 
                     74: extern int bad;
                     75: extern long nbytes;
                     76: extern long blkdone;
                     77: extern long nfiles;
                     78: extern char *argout;

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