DataMuseum.dk

top - metrics - download

    Length: 774 (0x306)
    Types: TextFile
    Names: »rewinddir.c«

└─⟦3d0c2be1b⟧ Bits:30001254 ISODE-5.0 Tape
    └─⟦eba4602b1⟧ »./isode-5.0.tar.Z« 
        └─⟦d3ac74d73⟧ 
            └─⟦this⟧ »isode-5.0/dirent/rewinddir.c« 
└─⟦2d1937cfd⟧ Bits:30007241 EUUGD22: P.P 5.0
    └─⟦35176feda⟧ »EurOpenD22/isode/isode-6.tar.Z« 
        └─⟦de7628f85⟧ 
            └─⟦this⟧ »isode-6.0/dirent/rewinddir.c« 

TextFile

/*
	rewinddir -- rewind a directory stream

	last edit:	25-Apr-1987	D A Gwyn

	This is not simply a call to seekdir(), because seekdir()
	will use the current buffer whenever possible and we need
	rewinddir() to forget about buffered data.
*/

#include	<sys/errno.h>
#include	<sys/types.h>
#include	"usr.dirent.h"

#ifndef	GETDENTS
extern off_t	lseek();

extern int	errno;

#ifndef NULL
#define	NULL	0
#endif

#ifndef SEEK_SET
#define	SEEK_SET	0
#endif

void
rewinddir( dirp )
	register DIR		*dirp;	/* stream from opendir() */
	{
	if ( dirp == NULL || dirp->dd_buf == NULL )
		{
		errno = EFAULT;
		return;			/* invalid pointer */
		}

	dirp->dd_loc = dirp->dd_size = 0;	/* invalidate buffer */
	(void)lseek( dirp->dd_fd, (off_t)0, SEEK_SET );	/* may set errno */
	}
#endif