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1991-04-24
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1KB
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48 lines
/* H.Dir: Directory handling */
#ifndef __sys_dir
#define __sys_dir
#define MAXNAMELEN 10 /* Name must be no longer than this */
struct direct
{
long d_ino; /* inode number of entry */
short d_reclen; /* length of this record */
short d_namlen; /* length of d_name string */
char d_name[MAXNAMELEN + 1]; /* directory name */
};
#define DIRSIZ(dp) \
((sizeof (struct direct) - (MAXNAMELEN+1)) \
+ (((dp)->d_namlen+1 + 3) & ~3))
typedef struct
{
long dd_loc;
char dd_name[1];
}
DIR;
/* K&R equivalent definitions */
#ifdef PCC
extern DIR *opendir();
extern struct direct *readdir();
extern void closedir();
#else
extern DIR *opendir (char *name);
extern struct direct *readdir (DIR *dirp);
extern void closedir (DIR *dirp);
#endif
#define seekdir(dirp,pos) ((dirp)->dd_loc = (pos))
#define telldir(dirp) ((dirp)->dd_loc)
#define rewinddir(dirp) ((dirp)->dd_loc = 0)
#endif