ref: 2e9835e771c54cb9a0c9cd81012e7b4b75f878f7
dir: /sys/src/ape/cmd/pax/paxdir.h/
/*
<dirent.h> -- definitions for SVR3 directory access routines
last edit: 25-Apr-1987 D A Gwyn
Prerequisite: <sys/types.h>
*/
#ifndef _PAX_DIRENT_H
#define _PAX_DIRENT_H
#include "config.h"
#ifdef USG
#define UFS
#else
#ifdef BSD
#define BFS
#endif
#endif
struct dirent { /* data from getdents()/readdir() */
long d_ino; /* inode number of entry */
off_t d_off; /* offset of disk directory entry */
unsigned short d_reclen; /* length of this record */
char d_name[1]; /* name of file (non-POSIX) */
};
typedef struct {
int dd_fd; /* file descriptor */
int dd_loc; /* offset in block */
int dd_size; /* amount of valid data */
char *dd_buf; /* -> directory block */
} DIR; /* stream data from opendir() */
/*
* The following nonportable ugliness could have been avoided by defining
* DIRENTSIZ and DIRENTBASESIZ to also have (struct dirent *) arguments.
*/
#define DIRENTBASESIZ (((struct dirent *)0)->d_name \
- (char *)&((struct dirent *)0)->d_ino)
#define DIRENTSIZ( namlen ) ((DIRENTBASESIZ + sizeof(long) + (namlen)) \
/ sizeof(long) * sizeof(long))
#define MAXNAMLEN 512 /* maximum filename length */
#ifndef NAME_MAX
#define NAME_MAX (MAXNAMLEN - 1) /* DAG -- added for POSIX */
#endif
#define DIRBUF 8192 /* buffer size for fs-indep. dirs */
/* must in general be larger than the filesystem buffer size */
extern DIR *opendir();
extern struct dirent *readdir();
extern OFFSET telldir();
extern void seekdir();
extern int closedir();
#endif /* _PAX_DIRENT_H */