/*
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*/
/*
* Define io syscalls supported by doio
*/
#define READ 1
#define WRITE 2
#define READA 3
#define WRITEA 4
#define SSREAD 5
#define SSWRITE 6
#define LISTIO 7
#define LREAD 10 /* listio - single stride, single entry */
#define LREADA 11
#define LWRITE 12
#define LWRITEA 13
#define LSREAD 14 /* listio - multi-stride, single entry */
#define LSREADA 15
#define LSWRITE 16
#define LSWRITEA 17
#define LEREAD 18 /* listio - single stride, multiple entry */
#define LEREADA 19
#define LEWRITE 20
#define LEWRITEA 21
/* Irix System Calls */
#define PREAD 100
#define PWRITE 101
#define READV 102
#define WRITEV 103
#define AREAD 104
#define AWRITE 105
#define LLREAD 110
#define LLAREAD 111
#define LLWRITE 112
#define LLAWRITE 113
#define MMAPR 120
#define MMAPW 121
#define RESVSP 122 /* fcntl(F_RESVSP) */
#define UNRESVSP 123 /* fcntl(F_UNRESVSP) */
#define DFFSYNC 124 /* fcntl(F_FSYNC) */
#define FSYNC2 125 /* fsync(2) */
#define FDATASYNC 126 /* fdatasync(2) */
#define BIOSIZE 127 /* fcntl(F_SETBIOSIZE) */
#ifdef CRAY
/* used: <<doio>> 1.? <<DOIO>> 1.5 <-DOIO-> 1.7*/
#define DOIO_MAGIC '<[DOIO]>'
#else
#define DOIO_MAGIC 07116601
#endif
/*
* Define various user flags (r_uflag field) that io requests can have
* specified.
*/
#define F_WORD_ALIGNED 0001 /* force request to be word aligned */
/*
* define various doio exit status's
*/
#define E_NORMAL 000 /* normal completion */
#define E_USAGE 001 /* cmdline usage error */
#define E_SETUP 002 /* any of a million setup conditions */
#define E_COMPARE 004 /* data compare error from doio child */
#define E_INTERNAL 010 /* various internal errors */
#define E_LOCKD 020 /* lockd startup/timeout errors */
#define E_SIGNAL 040 /* killed by signal */
/*
* Define async io completion strategies supported by doio.
*/
#define A_POLL 1 /* poll iosw for completion */
#define A_SIGNAL 2 /* get signal for completion */
#define A_RECALL 3 /* use recall(2) to wait */
#define A_RECALLA 4 /* use recalla(2) to wait */
#define A_RECALLS 5 /* use recalls(2) to wait */
#define A_SUSPEND 6 /* use aio_suspend(2) to wait */
#define A_CALLBACK 7 /* use a callback signal op. */
/*
* Define individual structures for each syscall type. These will all be
* unionized into a single io_req structure which io generators fill in and
* pass to doio.
*
* Note: It is VERY important that the r_file, r_oflags, r_offset, and
* r_nbytes fields occupy the same record positions in the
* read_req, reada_req, write_req, and writea_req structures and
* that they have the same type. It is also that r_pattern
* has the same type/offset in the write_req and writea_req
* structures.
*
* Since doio.c accesses all information through the r_data
* union in io_req, if the above assumptions hold, the above
* fields can be accessed without regard to structure type.
* This is an allowed assumption in C.
*/
#define MAX_FNAME_LENGTH 128
struct read_req {
char r_file[MAX_FNAME_LENGTH];
int r_oflags; /* open flags */
int r_offset;
int r_nbytes;
int r_uflags; /* user flags: mem alignment */
int r_aio_strat; /* asynch read completion strategy */
int r_nstrides; /* listio: multiple strides */
int r_nent; /* listio: multiple list entries */
};
struct write_req {
char r_file[MAX_FNAME_LENGTH];
int r_oflags;
int r_offset;
int r_nbytes;
char r_pattern;
int r_uflags; /* user flags: mem alignment */
int r_aio_strat; /* asynch write completion strategy */
int r_nstrides; /* listio: multiple strides */
int r_nent; /* listio: multiple list entries */
};
struct ssread_req {
int r_nbytes;
};
struct sswrite_req {
int r_nbytes;
char r_pattern;
};
struct listio_req {
char r_file[MAX_FNAME_LENGTH];
int r_cmd; /* LC_START or LC_WAIT */
int r_offset; /* file offset */
int r_opcode; /* LO_READ, or LO_WRITE */
int r_nbytes; /* bytes per stride */
int r_nstrides; /* how many strides to make */
int r_nent; /* how many listreq entries to make */
int r_filestride; /* always 0 for now */
int r_memstride; /* always 0 for now */
char r_pattern; /* for LO_WRITE operations */
int r_oflags; /* open(2) flags */
int r_aio_strat; /* async I/O completion strategy */
int r_uflags; /* user flags: memory alignment */
};
#define rw_req listio_req /* listio is superset of everything */
/*
* Main structure for sending a request to doio. Any tools which form IO
* for doio must present it using one of these structures.
*/
struct io_req {
int r_type; /* must be one of the #defines above */
int r_magic; /* must be set to DOIO_MAGIC by requestor */
union {
struct read_req read;
struct write_req write;
struct ssread_req ssread;
struct sswrite_req sswrite;
struct listio_req listio;
struct rw_req io;
} r_data;
};