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Annotation of 43BSD/contrib/news/src/ndir.h, revision 1.1.1.1

1.1       root        1: /* @(#)ndir.h  1.4     4/16/85 */
                      2: #ifndef DEV_BSIZE
                      3: #define        DEV_BSIZE       512
                      4: #endif
                      5: #define DIRBLKSIZ      DEV_BSIZE
                      6: #define        MAXNAMLEN       255
                      7: 
                      8: struct direct {
                      9:        long    d_ino;                  /* inode number of entry */
                     10:        short   d_reclen;               /* length of this record */
                     11:        short   d_namlen;               /* length of string in d_name */
                     12:        char    d_name[MAXNAMLEN + 1];  /* name must be no longer than this */
                     13: };
                     14: 
                     15: /*
                     16:  * The DIRSIZ macro gives the minimum record length which will hold
                     17:  * the directory entry.  This requires the amount of space in struct direct
                     18:  * without the d_name field, plus enough space for the name with a terminating
                     19:  * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary.
                     20:  */
                     21: 
                     22: #ifdef DIRSIZ
                     23: #undef DIRSIZ
                     24: #endif /* DIRSIZ */
                     25: #define DIRSIZ(dp) \
                     26:     ((sizeof (struct direct) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
                     27: 
                     28: /*
                     29:  * Definitions for library routines operating on directories.
                     30:  */
                     31: typedef struct _dirdesc {
                     32:        int     dd_fd;
                     33:        long    dd_loc;
                     34:        long    dd_size;
                     35:        char    dd_buf[DIRBLKSIZ];
                     36: } DIR;
                     37: #ifndef NULL
                     38: #define NULL 0
                     39: #endif
                     40: extern DIR *opendir();
                     41: extern struct direct *readdir();
                     42: extern void closedir();

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