Changes in aio_write.2

022ca2fc - Add aio_writev and aio_readv

Sat, 02 Jan 2021 23:34:20 +0000

Add aio_writev and aio_readvPOSIX AIO is great, but it lacks vectored I/O functions. This commitfixes that shortcoming by adding aio_writev and aio_readv. They aren'tpart of the standard, but they're an obvious extension. They work justlike their synchronous equivalents pwritev and preadv.It isn't yet possible to use vectored aiocbs with lio_listio, but thatcould be added in the future.Reviewed by: jhb, kib, bcrRelnotes: yesDifferential Revision: https://reviews.freebsd.org/D27743 List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

4092a25c - Fix various nits in the aio operation manpages.

Fri, 19 Aug 2016 17:37:32 +0000

Fix various nits in the aio operation manpages.- Avoid double use of "request" in a single sentence. Instead, describe aio_sigevent as being used to request notification of the associated operation's completion. This matches the language used to describe aio_sigevent in aio(4).- Simplify the prohibition on modifying buffers while requests are in flight.- Fix case mismatch.- Drop note about not using stack variables. C programmers should be able to figure out if a stack variable is safe based on the later warning about the life cycle requirements of control blocks.- Remove prohibition on modifying the I/O buffer for aio_fsync() since it does not use an I/O buffer. For aio_mlock(), prohibit modifications to the mapping (e.g. due to mprotect, munmap, mmap, etc.) but do not prohibit modifications to the memory backing the buffer (stores into the pages backing the buffer).Requested by: wblock (1,2), kib (4)Reviewed by: kib, rpokala, wblockMFC after: 3 daysSponsored by: Chelsio CommunicationsDifferential Revision: https://reviews.freebsd.org/D7462 List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

9c20dc99 - Add more documentation regarding unsafe AIO requests.

Thu, 21 Jul 2016 22:49:47 +0000

Add more documentation regarding unsafe AIO requests.The asynchronous I/O changes made previously result in differentbehavior out of the box. Previously all AIO requests failed withENOSYS / SIGSYS unless aio.ko was explicitly loaded. Now, some AIOrequests complete and others ("unsafe" requests) fail with EOPNOTSUPP.Reword the introductory paragraph in aio(4) to add a generaldescription of AIO before describing the vfs.aio.enable_unsafe sysctl.Remove the ENOSYS error description from aio_fsync(2), aio_read(2),and aio_write(2) and replace it with a description of EOPNOTSUPP.Remove the ENOSYS error description from aio_mlock(2).Log a message to the system log the first time a process requests an"unsafe" AIO request that fails with EOPNOTSUPP. This is modeled onthe log message used for processes using the legacy pty devices.Reviewed by: kib (earlier version)MFC after: 1 weekSponsored by: Chelsio CommunicationsDifferential Revision: https://reviews.freebsd.org/D7151 List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

463970da - Add documentation for the sigevent structure.

Fri, 15 Jul 2016 15:12:56 +0000

Add documentation for the sigevent structure.- Add a sigevent(3) manpage to give a general overview of the sigevent structure and the available notification mechanisms.- Document that AIO requests contain a nested sigevent structure that can be used to request completion notification.- Expand the sigevent details in other manuals to note details such as the extra values stored in a queued signal's information or in a posted kevent.Reviewed by: kibMFC after: 3 daysDifferential Revision: https://reviews.freebsd.org/D7122 List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

8fbf3d50 - use .Mt to mark up email addresses consistently (part4)

Mon, 23 Jun 2014 08:25:03 +0000

use .Mt to mark up email addresses consistently (part4)PR: 191174Submitted by: Franco Fichtner List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

0d9deed5 - mdoc: drop redundant .Pp and .LP calls

Fri, 08 Oct 2010 12:40:16 +0000

mdoc: drop redundant .Pp and .LP callsThey have no effect when coming in pairs, or before .Bl/.Bd List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

412295fd - Sort .Xr by section number.

Tue, 13 Dec 2005 13:43:35 +0000

Sort .Xr by section number.Submitted by: ru List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

e9e74956 - Add cross references to siginfo.3.

Tue, 13 Dec 2005 03:05:58 +0000

Add cross references to siginfo.3. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

30950a21 - Eliminate double whitespace.

Sat, 03 Jul 2004 22:30:10 +0000

Eliminate double whitespace. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

1a0a9345 - Mechanically kill hard sentence breaks.

Fri, 02 Jul 2004 23:52:20 +0000

Mechanically kill hard sentence breaks. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

d8b504e3 - Refer to 1003.1 instead of 1003.2 in the Standards section.

Mon, 13 Jan 2003 10:37:11 +0000

Refer to 1003.1 instead of 1003.2 in the Standards section. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

2efeeba5 - mdoc(7) police: "The .Fa argument.".

Thu, 19 Dec 2002 09:40:28 +0000

mdoc(7) police: "The .Fa argument.". List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

2faeeff4 - mdoc(7) police: Tidy up the syscall language.

Wed, 18 Dec 2002 09:22:32 +0000

mdoc(7) police: Tidy up the syscall language.Stop calling system calls "function calls".Use "The .Fn system call" a-la "The .Nm utility".When referring to a non-BSD implementation inthe HISTORY section, call syscall a function,to be safe. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

a7af55af - * Modernize aio(4), providing instructions for static and dynamic kernel

Thu, 24 Oct 2002 12:57:05 +0000

* Modernize aio(4), providing instructions for static and dynamic kernel linking.* Fix disorder in the SEE ALSO sections of aio_*(2).* Remove unnecessary cross-references from the SEE ALSO sections of aio_*(2); config(8), kldload(8) and kldunload(8) are cross-referenced from aio(4).* Remove the KERNEL OPTIONS sections from aio_*(2), now that these pages cross-reference aio(4), which contains suitable kernel linking reference material. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

9ed01b5d - Explain to users that they may want to kldload aio.

Tue, 22 Oct 2002 16:12:27 +0000

Explain to users that they may want to kldload aio.Move Xref sections.Submitted by: Craig Rodrigues List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

4e957fe6 - Fix reference to aio_read, should be aio_write

Tue, 16 Oct 2001 00:49:19 +0000

Fix reference to aio_read, should be aio_write List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

32eef9ae - mdoc(7) police: Use the new .In macro for #include statements.

Mon, 01 Oct 2001 16:09:29 +0000

mdoc(7) police: Use the new .In macro for #include statements. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

7ebcc426 - Remove whitespace at EOL.

Sun, 15 Jul 2001 07:53:42 +0000

Remove whitespace at EOL. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

589d1374 - remove outdated bugs, we actually do have aio_cancel support

Fri, 10 Nov 2000 20:57:05 +0000

remove outdated bugs, we actually do have aio_cancel supportas well as support for the field aio_offset in the aiocb structure. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2

4f18b878 - Remove blank lines.

Fri, 23 Jun 2000 20:34:31 +0000

Remove blank lines. List of files: /freebsd-13.1/lib/libc/sys/aio_write.2