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1 | .\" Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl) |
| 2 | .\" | |
| 3 | .\" This is free documentation; you can redistribute it and/or | |
| 4 | .\" modify it under the terms of the GNU General Public License as | |
| 5 | .\" published by the Free Software Foundation; either version 2 of | |
| 6 | .\" the License, or (at your option) any later version. | |
| 7 | .\" | |
| 8 | .\" The GNU General Public License's references to "object code" | |
| 9 | .\" and "executables" are to be interpreted as the output of any | |
| 10 | .\" document formatting or typesetting system, including | |
| 11 | .\" intermediate and printed output. | |
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| 13 | .\" This manual is distributed in the hope that it will be useful, | |
| 14 | .\" but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | .\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | .\" GNU General Public License for more details. | |
| 17 | .\" | |
| 18 | .\" You should have received a copy of the GNU General Public | |
| 19 | .\" License along with this manual; if not, write to the Free | |
| 20 | .\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, | |
| 21 | .\" USA. | |
| 22 | .\" | |
| 23 | .TH AIO_FSYNC 3 2003-11-14 "" "Linux Programmer's Manual" | |
| 24 | .SH NAME | |
| 25 | aio_fsync \- asynchronous file synchronization | |
| 26 | .SH SYNOPSIS | |
| 27 | .sp | |
| 28 | .B "#include <aio.h>" | |
| 29 | .sp | |
| 30 | .BI "int aio_fsync(int " op ", struct aiocb *" aiocbp ); | |
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31 | .SH DESCRIPTION |
| 32 | The | |
| e511ffb6 | 33 | .BR aio_fsync () |
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34 | function does a sync on all outstanding asynchronous I/O operations |
| 35 | associated with | |
| 36 | .IR aiocbp->aio_fildes . | |
| 37 | .LP | |
| 38 | More precisely, if | |
| 39 | .I op | |
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40 | is |
| 41 | .BR O_SYNC , | |
| 42 | then all currently queued I/O operations shall be | |
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43 | completed as if by a call of |
| 44 | .BR fsync (2), | |
| 45 | and if | |
| 46 | .I op | |
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47 | is |
| 48 | .BR O_DSYNC , | |
| 49 | this call is the asynchronous analog of | |
| fea681da | 50 | .BR fdatasync (2). |
| df8a3cac | 51 | Note that this is a request only \(em this call does not wait |
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52 | for I/O completion. |
| 53 | .LP | |
| 54 | Apart from | |
| 55 | .I aio_fildes | |
| 56 | the only field in the structure pointed to by | |
| 57 | .I aiocbp | |
| 58 | that is used by this call is the | |
| 59 | .I aio_sigevent | |
| 0c2ec4f1 | 60 | field (a \fIstruct sigevent\fP) that indicates the desired type of |
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61 | asynchronous notification at completion. |
| 62 | All other fields are ignored. | |
| 63 | .SH "RETURN VALUE" | |
| 64 | On success (the sync request was successfully queued) | |
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65 | this function returns 0. |
| 66 | On error \-1 is returned, and | |
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67 | .I errno |
| 68 | is set appropriately. | |
| 69 | .SH ERRORS | |
| 70 | .TP | |
| 71 | .B EAGAIN | |
| 72 | Out of resources. | |
| 73 | .TP | |
| 74 | .B EBADF | |
| 75 | .I aio_fildes | |
| 76 | is not a valid file descriptor open for writing. | |
| 77 | .TP | |
| 78 | .B EINVAL | |
| 79 | No synchronized I/O for this file is supported, or | |
| 80 | .I op | |
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81 | is not |
| 82 | .B O_SYNC | |
| 83 | or | |
| 84 | .BR O_DSYNC . | |
| fea681da | 85 | .SH "CONFORMING TO" |
| 68e1685c | 86 | POSIX.1-2001 |
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87 | .SH "SEE ALSO" |
| 88 | .BR aio_cancel (3), | |
| 89 | .BR aio_error (3), | |
| 90 | .BR aio_read (3), | |
| 91 | .BR aio_return (3), | |
| 92 | .BR aio_suspend (3), | |
| 93 | .BR aio_write (3) |