diff options
Diffstat (limited to '')
-rw-r--r-- | cpukit/posix/include/aio.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/cpukit/posix/include/aio.h b/cpukit/posix/include/aio.h new file mode 100644 index 0000000000..2fbb8ad925 --- /dev/null +++ b/cpukit/posix/include/aio.h @@ -0,0 +1,136 @@ +/* aio.h + * + */ + +#ifndef __POSIX_ASYNCHRONOUS_IO_h +#define __POSIX_ASYNCHRONOUS_IO_h + +#include <rtems/posix/features.h> + +#if defined(_POSIX_ASYNCHRONOUS_IO) + +/* + * 6.7.1 Data Definitions for Asynchronous Input and Output, + * P1003.1b-1993, p. 151 + */ + +#include <sys/types.h> +#include <signal.h> +#include <time.h> +#include <fcntl.h> + +/* + * 6.7.1.2 Manifest Constants, P1003.1b-1993, p. 153 + */ + +#define AIO_CANCELED 0 /* all requested operations have been canceled */ +#define AIO_NOTCANCELED 0 /* some of the operations could not be canceled */ + /* since they are in progress */ +#define AIO_ALLDONE 0 /* none of the requested operations could be */ + /* canceled since they are already complete */ + +/* lio_listio() options */ + +#define LIO_WAIT 0 /* calling process is to suspend until the */ + /* operation is complete */ +#define LIO_NOWAIT 0 /* calling process is to continue execution while */ + /* the operation is performed and no notification */ + /* shall be given when the operation is completed */ +#define LIO_READ 0 /* request a read() */ +#define LIO_WRITE 0 /* request a write() */ +#define LIO_NOP 0 /* no transfer is requested */ + +/* + * 6.7.1.1 Asynchronous I/O Control Block, P1003.1b-1993, p. 151 + */ + +struct aiocb { + int aio_fildes; /* File descriptor */ + off_t aio_offset; /* File offset */ + volatile void *aio_buf; /* Location of buffer */ + size_t aio_nbytes; /* Length of transfer */ + int aio_reqprio; /* Request priority offset */ + struct sigevent aio_sigevent; /* Signal number and value */ + int aoi_lio_opcode; /* Operation to be performed */ +}; + +/* + * 6.7.2 Asynchronous Read, P1003.1b-1993, p. 154 + */ + +int aio_read( + struct aiocb *aiocbp +); + +/* + * 6.7.3 Asynchronous Write, P1003.1b-1993, p. 155 + */ + +int aio_write( + struct aiocb *aiocbp +); + +/* + * 6.7.4 List Directed I/O, P1003.1b-1993, p. 158 + */ + +int lio_listio( + int mode, + struct aiocb * const list[], + int nent, + struct sigevent *sig +); + +/* + * 6.7.5 Retrieve Error of Asynchronous I/O Operation, P1003.1b-1993, p. 161 + */ + +int aio_error( + const struct aiocb *aiocbp +); + +/* + * 6.7.6 Retrieve Return Status of Asynchronous I/O Operation, + * P1003.1b-1993, p. 162 + */ + +int aio_return( + const struct aiocb *aiocbp +); + +/* + * 6.7.7 Cancel Asynchronous I/O Operation, P1003.1b-1993, p. 163 + */ + +int aio_cancel( + int filedes, + struct aiocb *aiocbp +); + +/* + * 6.7.7 Wait for Asynchronous I/O Request, P1003.1b-1993, p. 164 + */ + +int aio_suspend( + struct aiocb * const list[], + int nent, + const struct timespec *timeout +); + +#if defined(_POSIX_SYNCHRONIZED_IO) + +/* + * 6.7.9 Asynchronous File Synchronization, P1003.1b-1993, p. 166 + */ + +int aio_fsync( + int op, + struct aiocb *aiocbp +); + +#endif /* _POSIX_SYNCHRONIZED_IO */ + +#endif /* _POSIX_ASYNCHRONOUS_IO */ + +#endif +/* end of include file */ |