Buffer I/O

Collaboration diagram for Buffer I/O:

Data Structures
struct	buffer_data

Macros
#define	DPKG_BUFFER_SIZE   (32 * 1024)
#define	BUFFER_WRITE_VBUF   1
#define	BUFFER_WRITE_FD   2
#define	BUFFER_WRITE_NULL   3
#define	BUFFER_DIGEST_NULL   4
#define	BUFFER_DIGEST_MD5   5
#define	BUFFER_READ_FD   0
#define	buffer_md5(buf, hash, limit)    buffer_digest(buf, hash, BUFFER_DIGEST_MD5, limit)
#define	fd_md5(fd, hash, limit, err)
#define	fd_fd_copy(fd1, fd2, limit, err)
#define	fd_fd_copy_and_md5(fd1, fd2, hash, limit, err)
#define	fd_vbuf_copy(fd, buf, limit, err)
#define	fd_skip(fd, limit, err)    buffer_skip_Int(fd, BUFFER_READ_FD, limit, err)

Functions
off_t	buffer_copy_IntPtr (int i, int typeIn, void *f, int typeDigest, void *p, int typeOut, off_t limit, struct dpkg_error *err) DPKG_ATTR_REQRET
off_t	buffer_copy_IntInt (int i1, int typeIn, void *f, int typeDigest, int i2, int typeOut, off_t limit, struct dpkg_error *err) DPKG_ATTR_REQRET
off_t	buffer_skip_Int (int I, int T, off_t limit, struct dpkg_error *err) DPKG_ATTR_REQRET
off_t	buffer_digest (const void *buf, void *hash, int typeDigest, off_t length)

Detailed Description

Macro Definition Documentation

BUFFER_DIGEST_MD5

#define BUFFER_DIGEST_MD5   5

BUFFER_DIGEST_NULL

#define BUFFER_DIGEST_NULL   4

buffer_md5

#define buffer_md5	(		buf,
			hash,
			limit
	)		buffer_digest(buf, hash, BUFFER_DIGEST_MD5, limit)

BUFFER_READ_FD

#define BUFFER_READ_FD   0

BUFFER_WRITE_FD

#define BUFFER_WRITE_FD   2

BUFFER_WRITE_NULL

#define BUFFER_WRITE_NULL   3

BUFFER_WRITE_VBUF

#define BUFFER_WRITE_VBUF   1

DPKG_BUFFER_SIZE

#define DPKG_BUFFER_SIZE   (32 * 1024)

fd_fd_copy

#define fd_fd_copy	(		fd1,
			fd2,
			limit,
			err
	)

Value:

        buffer_copy_IntInt(fd1, BUFFER_READ_FD, \
                           NULL, BUFFER_DIGEST_NULL, \
                           fd2, BUFFER_WRITE_FD, \
                           limit, err)

fd_fd_copy_and_md5

#define fd_fd_copy_and_md5	(		fd1,
			fd2,
			hash,
			limit,
			err
	)

Value:

        buffer_copy_IntInt(fd1, BUFFER_READ_FD, \
                           hash, BUFFER_DIGEST_MD5, \
                           fd2, BUFFER_WRITE_FD, \
                           limit, err)

fd_md5

#define fd_md5	(		fd,
			hash,
			limit,
			err
	)

Value:

        buffer_copy_IntPtr(fd, BUFFER_READ_FD, \
                           hash, BUFFER_DIGEST_MD5, \
                           NULL, BUFFER_WRITE_NULL, \
                           limit, err)

fd_skip

#define fd_skip	(		fd,
			limit,
			err
	)		buffer_skip_Int(fd, BUFFER_READ_FD, limit, err)

fd_vbuf_copy

#define fd_vbuf_copy	(		fd,
			buf,
			limit,
			err
	)

Value:

        buffer_copy_IntPtr(fd, BUFFER_READ_FD, \
                           NULL, BUFFER_DIGEST_NULL, \
                           buf, BUFFER_WRITE_VBUF, \
                           limit, err)

Function Documentation

buffer_copy_IntInt()

off_t buffer_copy_IntInt	(	int	i1,
		int	typeIn,
		void *	f,
		int	typeDigest,
		int	i2,
		int	typeOut,
		off_t	limit,
		struct dpkg_error *	err
	)

References buffer_data::type.

buffer_copy_IntPtr()

off_t buffer_copy_IntPtr	(	int	i,
		int	typeIn,
		void *	f,
		int	typeDigest,
		void *	p,
		int	typeOut,
		off_t	limit,
		struct dpkg_error *	err
	)

References buffer_data::type.

buffer_digest()

off_t buffer_digest	(	const void *	buf,
		void *	hash,
		int	typeDigest,
		off_t	length
	)

References buffer_data::arg, buffer_data::ptr, and buffer_data::type.

buffer_skip_Int()

off_t buffer_skip_Int	(	int	I,
		int	T,
		off_t	limit,
		struct dpkg_error *	err
	)

References buffer_data::type.