1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1999-2001 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _MDB_IO_IMPL_H 28 #define _MDB_IO_IMPL_H 29 30 #include <mdb/mdb_io.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #ifdef _MDB 37 38 typedef struct mdb_io_ops { 39 ssize_t (*io_read)(mdb_io_t *, void *, size_t); 40 ssize_t (*io_write)(mdb_io_t *, const void *, size_t); 41 off64_t (*io_seek)(mdb_io_t *, off64_t, int); 42 int (*io_ctl)(mdb_io_t *, int, void *); 43 void (*io_close)(mdb_io_t *); 44 const char *(*io_name)(mdb_io_t *); 45 void (*io_link)(mdb_io_t *, mdb_iob_t *); 46 void (*io_unlink)(mdb_io_t *, mdb_iob_t *); 47 int (*io_setattr)(mdb_io_t *, int, uint_t); 48 void (*io_suspend)(mdb_io_t *); 49 void (*io_resume)(mdb_io_t *); 50 } mdb_io_ops_t; 51 52 #define IOP_READ(io, buf, len) ((io)->io_ops->io_read((io), (buf), (len))) 53 #define IOP_WRITE(io, buf, len) ((io)->io_ops->io_write((io), (buf), (len))) 54 #define IOP_SEEK(io, off, whence) ((io)->io_ops->io_seek((io), (off), (whence))) 55 #define IOP_CTL(io, req, arg) ((io)->io_ops->io_ctl((io), (req), (arg))) 56 #define IOP_CLOSE(io) ((io)->io_ops->io_close((io))) 57 #define IOP_NAME(io) ((io)->io_ops->io_name((io))) 58 #define IOP_LINK(io, iob) ((io)->io_ops->io_link((io), (iob))) 59 #define IOP_UNLINK(io, iob) ((io)->io_ops->io_unlink((io), (iob))) 60 #define IOP_SETATTR(io, r, a) ((io)->io_ops->io_setattr((io), (r), (a))) 61 #define IOP_SUSPEND(io) ((io)->io_ops->io_suspend((io))) 62 #define IOP_RESUME(io) ((io)->io_ops->io_resume((io))) 63 64 #define IOPF_READ(io) \ 65 ((ssize_t (*)(mdb_io_t *, void *, size_t))(io)->io_ops->io_read) 66 67 #define IOPF_WRITE(io) \ 68 ((ssize_t (*)(mdb_io_t *, void *, size_t))(io)->io_ops->io_write) 69 70 #define ATT_STANDOUT 0x01 /* Standout mode */ 71 #define ATT_UNDERLINE 0x02 /* Underline mode */ 72 #define ATT_REVERSE 0x04 /* Reverse video mode */ 73 #define ATT_BOLD 0x08 /* Bold text mode */ 74 #define ATT_DIM 0x10 /* Dim text mode */ 75 #define ATT_ALTCHARSET 0x20 /* Alternate character set mode */ 76 77 #define ATT_ALL 0x3f /* Mask of all valid attributes */ 78 79 #define ATT_OFF 0 /* Turn attributes off */ 80 #define ATT_ON 1 /* Turn attributes on */ 81 82 struct mdb_io { 83 const mdb_io_ops_t *io_ops; /* I/O type-specific operations */ 84 void *io_data; /* I/O type-specific data pointer */ 85 mdb_io_t *io_next; /* Link to next i/o object on stack */ 86 size_t io_refcnt; /* Reference count */ 87 }; 88 89 struct mdb_iob { 90 char *iob_buf; /* Input/output buffer */ 91 size_t iob_bufsiz; /* Size of iob_buf in bytes */ 92 char *iob_bufp; /* Current buffer location */ 93 size_t iob_nbytes; /* Number of bytes in io_buf */ 94 size_t iob_nlines; /* Lines output on current page */ 95 size_t iob_lineno; /* Storage for saved yylineno */ 96 size_t iob_rows; /* Terminal height */ 97 size_t iob_cols; /* Terminal width */ 98 size_t iob_tabstop; /* Tab stop width */ 99 size_t iob_margin; /* Margin width */ 100 uint_t iob_flags; /* Flags (see <mdb/mdb_io.h>) */ 101 mdb_io_t *iob_iop; /* I/o implementation pointer */ 102 mdb_io_t *iob_pgp; /* Pager i/o implementation pointer */ 103 mdb_iob_t *iob_next; /* Stack next pointer */ 104 }; 105 106 /* 107 * Stub functions for i/o backend implementors: these stubs either act as 108 * pass-through no-ops or return ENOTSUP as appropriate. 109 */ 110 extern ssize_t no_io_read(mdb_io_t *, void *, size_t); 111 extern ssize_t no_io_write(mdb_io_t *, const void *, size_t); 112 extern off64_t no_io_seek(mdb_io_t *, off64_t, int); 113 extern int no_io_ctl(mdb_io_t *, int, void *); 114 extern void no_io_close(mdb_io_t *); 115 extern const char *no_io_name(mdb_io_t *); 116 extern void no_io_link(mdb_io_t *, mdb_iob_t *); 117 extern void no_io_unlink(mdb_io_t *, mdb_iob_t *); 118 extern int no_io_setattr(mdb_io_t *, int, uint_t); 119 extern void no_io_suspend(mdb_io_t *); 120 extern void no_io_resume(mdb_io_t *); 121 122 #endif /* _MDB */ 123 124 #ifdef __cplusplus 125 } 126 #endif 127 128 #endif /* _MDB_IO_IMPL_H */ 129