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Annotation of 43BSDTahoe/new/rn/ndir.h, revision 1.1.1.1

1.1       root        1: /* $Header: ndir.h,v 4.3 85/05/01 11:43:00 lwall Exp $
                      2:  *
                      3:  * $Log:       ndir.h,v $
                      4:  * Revision 4.3  85/05/01  11:43:00  lwall
                      5:  * Baseline for release with 4.3bsd.
                      6:  * 
                      7:  */
                      8: 
                      9: #ifdef LIBNDIR
                     10: #   include <ndir.h>
                     11: #else
                     12: #   ifndef USENDIR
                     13: #      include <sys/dir.h>
                     14: #   else
                     15: 
                     16: #ifndef DEV_BSIZE
                     17: #define        DEV_BSIZE       512
                     18: #endif
                     19: #define DIRBLKSIZ      DEV_BSIZE
                     20: #define        MAXNAMLEN       255
                     21: 
                     22: struct direct {
                     23:        long    d_ino;                  /* inode number of entry */
                     24:        short   d_reclen;               /* length of this record */
                     25:        short   d_namlen;               /* length of string in d_name */
                     26:        char    d_name[MAXNAMLEN + 1];  /* name must be no longer than this */
                     27: };
                     28: 
                     29: /*
                     30:  * The DIRSIZ macro gives the minimum record length which will hold
                     31:  * the directory entry.  This requires the amount of space in struct direct
                     32:  * without the d_name field, plus enough space for the name with a terminating
                     33:  * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary.
                     34:  */
                     35: #undef DIRSIZ
                     36: #define DIRSIZ(dp) \
                     37:     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
                     38: 
                     39: /*
                     40:  * Definitions for library routines operating on directories.
                     41:  */
                     42: typedef struct _dirdesc {
                     43:        int     dd_fd;
                     44:        long    dd_loc;
                     45:        long    dd_size;
                     46:        char    dd_buf[DIRBLKSIZ];
                     47: } DIR;
                     48: #ifndef NULL
                     49: #define NULL 0
                     50: #endif
                     51: extern DIR *opendir();
                     52: extern struct direct *readdir();
                     53: extern long telldir();
                     54: extern void seekdir();
                     55: #define rewinddir(dirp)        seekdir((dirp), (long)0)
                     56: extern void closedir();
                     57: 
                     58: #   endif
                     59: #endif

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