blob: 12649cf54603131850e9bde4107bda68df1bf9b1 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#define LIO_IO_SYNC 00001 /* read/write */
#define LIO_IO_ASYNC 00002 /* reada/writea/aio_write/aio_read */
#define LIO_IO_SLISTIO 00004 /* single stride sync listio */
#define LIO_IO_ALISTIO 00010 /* single stride async listio */
#define LIO_IO_SYNCV 00020 /* single-buffer readv/writev */
#define LIO_IO_SYNCP 00040 /* pread/pwrite */
#ifdef linux
#define LIO_IO_TYPES 00021 /* all io types */
#endif /* linux */
#define LIO_WAIT_NONE 00010000 /* return asap -- use with care */
#define LIO_WAIT_ACTIVE 00020000 /* spin looking at iosw fields, or EINPROGRESS */
#define LIO_WAIT_RECALL 00040000 /* call recall(2)/aio_suspend(3) */
#define LIO_WAIT_SIGPAUSE 00100000 /* call pause */
#define LIO_WAIT_SIGACTIVE 00200000 /* spin waiting for signal */
#ifdef linux
#define LIO_WAIT_TYPES 00300000 /* all wait types, except nowait */
#endif /* linux */
/* meta wait io */
/* 00 000 0000 */
#ifdef linux
/* all signal wait types */
#define LIO_WAIT_SIGTYPES (LIO_WAIT_SIGPAUSE)
#endif /* linux */
/*
* This bit provides a way to randomly pick an io type and wait method.
* lio_read_buffer() and lio_write_buffer() functions will call
* lio_random_methods() with the given method.
*/
#define LIO_RANDOM 010000000
/*
* This bit provides a way for the programmer to use async i/o with
* signals and to use their own signal handler. By default,
* the signal will only be given to the system call if the wait
* method is LIO_WAIT_SIGPAUSE or LIO_WAIT_SIGACTIVE.
* Whenever these wait methods are used, libio signal handler
* will be used.
*/
#define LIO_USE_SIGNAL 020000000
/*
* prototypes/structures for functions in the libio.c module. See comments
* in that module, or man page entries for information on the individual
* functions.
*/
int stride_bounds(int offset, int stride, int nstrides,
int bytes_per_stride, int *min_byte, int *max_byte);
int lio_set_debug(int level);
int lio_parse_io_arg1(char *string);
void lio_help1(char *prefex);
int lio_parse_io_arg2(char *string, char **badtoken);
void lio_help2(char *prefex);
int lio_write_buffer(int fd, int method, char *buffer, int size,
int sig, char **errmsg, long wrd);
int lio_read_buffer(int fd, int method, char *buffer, int size,
int sig, char **errmsg, long wrd);
int lio_random_methods(long mask);
/*
* Define the structure that contains the infomation that is used
* by the parsing and help functions.
*/
struct lio_info_type {
char *token;
int bits;
char *desc;
};