mdb_io_impl.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1999-2001 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ifndef _MDB_IO_IMPL_H
#define _MDB_IO_IMPL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <mdb/mdb_io.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _MDB
typedef struct mdb_io_ops {
ssize_t (*io_read)(mdb_io_t *, void *, size_t);
ssize_t (*io_write)(mdb_io_t *, const void *, size_t);
off64_t (*io_seek)(mdb_io_t *, off64_t, int);
int (*io_ctl)(mdb_io_t *, int, void *);
void (*io_close)(mdb_io_t *);
const char *(*io_name)(mdb_io_t *);
void (*io_link)(mdb_io_t *, mdb_iob_t *);
void (*io_unlink)(mdb_io_t *, mdb_iob_t *);
int (*io_setattr)(mdb_io_t *, int, uint_t);
void (*io_suspend)(mdb_io_t *);
void (*io_resume)(mdb_io_t *);
} mdb_io_ops_t;
#define IOP_READ(io, buf, len) ((io)->io_ops->io_read((io), (buf), (len)))
#define IOP_WRITE(io, buf, len) ((io)->io_ops->io_write((io), (buf), (len)))
#define IOP_SEEK(io, off, whence) ((io)->io_ops->io_seek((io), (off), (whence)))
#define IOP_CTL(io, req, arg) ((io)->io_ops->io_ctl((io), (req), (arg)))
#define IOP_CLOSE(io) ((io)->io_ops->io_close((io)))
#define IOP_NAME(io) ((io)->io_ops->io_name((io)))
#define IOP_LINK(io, iob) ((io)->io_ops->io_link((io), (iob)))
#define IOP_UNLINK(io, iob) ((io)->io_ops->io_unlink((io), (iob)))
#define IOP_SETATTR(io, r, a) ((io)->io_ops->io_setattr((io), (r), (a)))
#define IOP_SUSPEND(io) ((io)->io_ops->io_suspend((io)))
#define IOP_RESUME(io) ((io)->io_ops->io_resume((io)))
#define IOPF_READ(io) \
((ssize_t (*)(mdb_io_t *, void *, size_t))(io)->io_ops->io_read)
#define IOPF_WRITE(io) \
((ssize_t (*)(mdb_io_t *, void *, size_t))(io)->io_ops->io_write)
#define ATT_STANDOUT 0x01 /* Standout mode */
#define ATT_UNDERLINE 0x02 /* Underline mode */
#define ATT_REVERSE 0x04 /* Reverse video mode */
#define ATT_BOLD 0x08 /* Bold text mode */
#define ATT_DIM 0x10 /* Dim text mode */
#define ATT_ALTCHARSET 0x20 /* Alternate character set mode */
#define ATT_ALL 0x3f /* Mask of all valid attributes */
#define ATT_OFF 0 /* Turn attributes off */
#define ATT_ON 1 /* Turn attributes on */
struct mdb_io {
const mdb_io_ops_t *io_ops; /* I/O type-specific operations */
void *io_data; /* I/O type-specific data pointer */
mdb_io_t *io_next; /* Link to next i/o object on stack */
size_t io_refcnt; /* Reference count */
};
struct mdb_iob {
char *iob_buf; /* Input/output buffer */
size_t iob_bufsiz; /* Size of iob_buf in bytes */
char *iob_bufp; /* Current buffer location */
size_t iob_nbytes; /* Number of bytes in io_buf */
size_t iob_nlines; /* Lines output on current page */
size_t iob_lineno; /* Storage for saved yylineno */
size_t iob_rows; /* Terminal height */
size_t iob_cols; /* Terminal width */
size_t iob_tabstop; /* Tab stop width */
size_t iob_margin; /* Margin width */
uint_t iob_flags; /* Flags (see <mdb/mdb_io.h>) */
mdb_io_t *iob_iop; /* I/o implementation pointer */
mdb_io_t *iob_pgp; /* Pager i/o implementation pointer */
mdb_iob_t *iob_next; /* Stack next pointer */
};
/*
* Stub functions for i/o backend implementors: these stubs either act as
* pass-through no-ops or return ENOTSUP as appropriate.
*/
extern ssize_t no_io_read(mdb_io_t *, void *, size_t);
extern ssize_t no_io_write(mdb_io_t *, const void *, size_t);
extern off64_t no_io_seek(mdb_io_t *, off64_t, int);
extern int no_io_ctl(mdb_io_t *, int, void *);
extern void no_io_close(mdb_io_t *);
extern const char *no_io_name(mdb_io_t *);
extern void no_io_link(mdb_io_t *, mdb_iob_t *);
extern void no_io_unlink(mdb_io_t *, mdb_iob_t *);
extern int no_io_setattr(mdb_io_t *, int, uint_t);
extern void no_io_suspend(mdb_io_t *);
extern void no_io_resume(mdb_io_t *);
#endif /* _MDB */
#ifdef __cplusplus
}
#endif
#endif /* _MDB_IO_IMPL_H */