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Annotation of coherent/g/usr/bin/pax/paxdir.h, revision 1.1.1.1

1.1       root        1: /*
                      2:        <dirent.h> -- definitions for SVR3 directory access routines
                      3: 
                      4:        last edit:      25-Apr-1987     D A Gwyn
                      5: 
                      6:        Prerequisite:   <sys/types.h>
                      7: */
                      8: 
                      9: #ifndef _PAX_DIRENT_H
                     10: #define _PAX_DIRENT_H
                     11: 
                     12: #include "config.h"
                     13: #ifdef USG
                     14: #define UFS
                     15: #else
                     16: #ifdef BSD
                     17: #define BFS
                     18: #endif
                     19: #endif
                     20: 
                     21: struct dirent {                        /* data from getdents()/readdir() */
                     22:     long               d_ino;          /* inode number of entry */
                     23:     off_t              d_off;          /* offset of disk directory entry */
                     24:     unsigned short     d_reclen;       /* length of this record */
                     25:     char               d_name[1];      /* name of file (non-POSIX) */
                     26: };
                     27: 
                     28: typedef struct {
                     29:     int                dd_fd;                  /* file descriptor */
                     30:     int                dd_loc;                 /* offset in block */
                     31:     int                dd_size;                /* amount of valid data */
                     32:     char       *dd_buf;                /* -> directory block */
                     33: } DIR;                                 /* stream data from opendir() */
                     34: 
                     35: 
                     36: /* 
                     37:  * The following nonportable ugliness could have been avoided by defining
                     38:  * DIRENTSIZ and DIRENTBASESIZ to also have (struct dirent *) arguments. 
                     39:  */
                     40: #define        DIRENTBASESIZ           (((struct dirent *)0)->d_name \
                     41:                                - (char *)&((struct dirent *)0)->d_ino)
                     42: #define        DIRENTSIZ( namlen )     ((DIRENTBASESIZ + sizeof(long) + (namlen)) \
                     43:                                / sizeof(long) * sizeof(long))
                     44: 
                     45: #define        MAXNAMLEN 512                   /* maximum filename length */
                     46: 
                     47: #ifndef NAME_MAX
                     48: #define        NAME_MAX (MAXNAMLEN - 1)        /* DAG -- added for POSIX */
                     49: #endif
                     50: 
                     51: #define        DIRBUF   8192                   /* buffer size for fs-indep. dirs */
                     52:                /* must in general be larger than the filesystem buffer size */
                     53: 
                     54: extern DIR             *opendir();
                     55: extern struct dirent   *readdir();
                     56: extern OFFSET          telldir();
                     57: extern void            seekdir();
                     58: extern int             closedir();
                     59: 
                     60: #endif /* _PAX_DIRENT_H */

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