[5e9b32b] | 1 | /* aio.h |
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| 2 | * |
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[eb5a7e07] | 3 | * $Id$ |
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[5e9b32b] | 4 | */ |
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| 5 | |
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| 6 | #ifndef __POSIX_ASYNCHRONOUS_IO_h |
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| 7 | #define __POSIX_ASYNCHRONOUS_IO_h |
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| 8 | |
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| 9 | #include <rtems/posix/features.h> |
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| 10 | |
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| 11 | #if defined(_POSIX_ASYNCHRONOUS_IO) |
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| 12 | |
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| 13 | /* |
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| 14 | * 6.7.1 Data Definitions for Asynchronous Input and Output, |
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| 15 | * P1003.1b-1993, p. 151 |
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| 16 | */ |
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| 17 | |
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| 18 | #include <sys/types.h> |
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| 19 | #include <signal.h> |
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| 20 | #include <time.h> |
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| 21 | #include <fcntl.h> |
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| 22 | |
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| 23 | /* |
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| 24 | * 6.7.1.2 Manifest Constants, P1003.1b-1993, p. 153 |
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| 25 | */ |
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| 26 | |
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| 27 | #define AIO_CANCELED 0 /* all requested operations have been canceled */ |
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| 28 | #define AIO_NOTCANCELED 0 /* some of the operations could not be canceled */ |
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| 29 | /* since they are in progress */ |
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| 30 | #define AIO_ALLDONE 0 /* none of the requested operations could be */ |
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| 31 | /* canceled since they are already complete */ |
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| 32 | |
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| 33 | /* lio_listio() options */ |
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| 34 | |
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| 35 | #define LIO_WAIT 0 /* calling process is to suspend until the */ |
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| 36 | /* operation is complete */ |
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| 37 | #define LIO_NOWAIT 0 /* calling process is to continue execution while */ |
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| 38 | /* the operation is performed and no notification */ |
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| 39 | /* shall be given when the operation is completed */ |
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| 40 | #define LIO_READ 0 /* request a read() */ |
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| 41 | #define LIO_WRITE 0 /* request a write() */ |
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| 42 | #define LIO_NOP 0 /* no transfer is requested */ |
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| 43 | |
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| 44 | /* |
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| 45 | * 6.7.1.1 Asynchronous I/O Control Block, P1003.1b-1993, p. 151 |
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| 46 | */ |
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| 47 | |
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| 48 | struct aiocb { |
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| 49 | int aio_fildes; /* File descriptor */ |
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| 50 | off_t aio_offset; /* File offset */ |
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| 51 | volatile void *aio_buf; /* Location of buffer */ |
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| 52 | size_t aio_nbytes; /* Length of transfer */ |
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| 53 | int aio_reqprio; /* Request priority offset */ |
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| 54 | struct sigevent aio_sigevent; /* Signal number and value */ |
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| 55 | int aoi_lio_opcode; /* Operation to be performed */ |
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| 56 | }; |
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| 57 | |
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| 58 | /* |
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| 59 | * 6.7.2 Asynchronous Read, P1003.1b-1993, p. 154 |
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| 60 | */ |
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| 61 | |
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| 62 | int aio_read( |
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| 63 | struct aiocb *aiocbp |
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| 64 | ); |
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| 65 | |
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| 66 | /* |
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| 67 | * 6.7.3 Asynchronous Write, P1003.1b-1993, p. 155 |
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| 68 | */ |
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| 69 | |
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| 70 | int aio_write( |
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| 71 | struct aiocb *aiocbp |
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| 72 | ); |
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| 73 | |
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| 74 | /* |
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| 75 | * 6.7.4 List Directed I/O, P1003.1b-1993, p. 158 |
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| 76 | */ |
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| 77 | |
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| 78 | int lio_listio( |
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| 79 | int mode, |
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| 80 | struct aiocb * const list[], |
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| 81 | int nent, |
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| 82 | struct sigevent *sig |
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| 83 | ); |
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| 84 | |
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| 85 | /* |
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| 86 | * 6.7.5 Retrieve Error of Asynchronous I/O Operation, P1003.1b-1993, p. 161 |
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| 87 | */ |
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| 88 | |
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| 89 | int aio_error( |
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| 90 | const struct aiocb *aiocbp |
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| 91 | ); |
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| 92 | |
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| 93 | /* |
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| 94 | * 6.7.6 Retrieve Return Status of Asynchronous I/O Operation, |
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| 95 | * P1003.1b-1993, p. 162 |
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| 96 | */ |
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| 97 | |
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| 98 | int aio_return( |
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| 99 | const struct aiocb *aiocbp |
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| 100 | ); |
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| 101 | |
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| 102 | /* |
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| 103 | * 6.7.7 Cancel Asynchronous I/O Operation, P1003.1b-1993, p. 163 |
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| 104 | */ |
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| 105 | |
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| 106 | int aio_cancel( |
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| 107 | int filedes, |
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| 108 | struct aiocb *aiocbp |
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| 109 | ); |
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| 110 | |
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| 111 | /* |
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| 112 | * 6.7.7 Wait for Asynchronous I/O Request, P1003.1b-1993, p. 164 |
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| 113 | */ |
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| 114 | |
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| 115 | int aio_suspend( |
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| 116 | struct aiocb * const list[], |
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| 117 | int nent, |
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| 118 | const struct timespec *timeout |
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| 119 | ); |
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| 120 | |
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| 121 | #if defined(_POSIX_SYNCHRONIZED_IO) |
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| 122 | |
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| 123 | /* |
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| 124 | * 6.7.9 Asynchronous File Synchronization, P1003.1b-1993, p. 166 |
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| 125 | */ |
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| 126 | |
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| 127 | int aio_fsync( |
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| 128 | int op, |
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| 129 | struct aiocb *aiocbp |
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| 130 | ); |
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| 131 | |
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| 132 | #endif /* _POSIX_SYNCHRONIZED_IO */ |
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| 133 | |
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| 134 | #endif /* _POSIX_ASYNCHRONOUS_IO */ |
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| 135 | |
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| 136 | #endif |
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| 137 | /* end of include file */ |
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