| /* |
| * 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., 59 |
| * Temple Place - Suite 330, Boston MA 02111-1307, 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; |
| }; |