[v3,2/2] posix: Implement preadv2 and pwritev2

Message ID 1493901791-13438-2-git-send-email-adhemerval.zanella@linaro.org
State New
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Series
  • Untitled series #1300
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Commit Message

Adhemerval Zanella May 4, 2017, 12:43 p.m.
Change from previous version:

   * Add unsupported flag check for Linux implementation.

   * Unsupported/invalid flags now return EOPNOTSUPP instead of
     EINVAL.

   * Add comment about preadv2 and pwritev2 support on kernel-features.h.

   * Add NEWS entry.

   * Fix typo in documentation.
        
--

This patch adds support of preadv2 and pwritev2 which are similar to
preadv/pwritev but adds an extra flag argument.  As for preadv/pwritev
both interfaces are added a non-standard standard GNU API.

On default 'posix' implementation trying to emulate the Linux supported
flags is troublesome:

   * We can not temporary change the file state of the O_DSYNC and O_SYNC
     flags to emulate RWF_{D}SYNC (attempts to change the state of using
     fcntl are silently ignored).

   * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
     semantic not provided by any other flag (O_NONBLOCK for instance).

So default sysdeps/posix implementations fails with EINVAL for any non
supported flag (which are none currently) calls generic preadv/pwritev.
Basically, it supports only preadv2 called as preadv (with flags sets
to 0).

The Linux one uses the preadv2/pwritev2 syscall if defined, otherwise it
call preadv/writev.  Instead of using the previous __ASSUME_* to
unconditionally issue the syscall (and avoid building the fallback routine),
it call pread/write if the preadv2/pwritev2 syscalls fails.  The idea
is just avoid adding another __ASSUME_* and checking each architecture
on every kernel bump and simplify code conditionals.

Checked on x86_64-linux-gnu and on i686-linux-gnu and a check with
run-built-tests=no on aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabihf,
ia64-linux-gnu, m68k-linux-gnu, microblaze-linux-gnu, mips{64,64n32}-linux-gnu,
nios2-linux-gnu, powerpc{64,64le}-linux-gnu, s390{x}-linux-gnu,
sparc{64,v9}-linux-gnu, tile{gx,pro}-linux-gnu, and sh4-linux-gnu (all using
gcc 6.3).

	* NEWS: Add note about pwritev2 and preadv2 inclusion.
	* misc/Makefile (routines): Add preadv2, preadv64v2, pwritev2, and
	pwritev64v2.
	(tests): Add tst-preadvwritev2 and tst-preadvwritev64v2.
	* misc/Versions (GLIBC_2.26): Add preadv2, preadv64v2, pwritev2, and
	pwritev64v2.
	* misc/preadv2.c: New file.
	* misc/preadv64v2.c: Likewise.
	* misc/pwritev2.c: Likewise.
	* misc/pwritev64v2.c: Likewise.
	* misc/tst-preadvwritev2.c: Likewise.
	* misc/tst-preadvwritev64v2.c: Likewise.
	* manual/llio.texi: Add preadv2 and pwritev2 documentation.
	* misc/sys/uio.h [__USE_GNU && !__USE_FILE_OFFSET64] (preadv2): New
	prototype.
	[__USE_GNU && !__USE_FILE_OFFSET64] (pwritev2):	Likewise.
	[__USE_GNU && __USE_FILE_OFFSET64] (preadv64v2): Likewise.
	[__USE_GNU && __USE_FILE_OFFSET64] (pwritev64v2): Likewise.
	* misc/tst-preadvwritev-common.c (PREADV): Define if not defined.
	(PWRITEV): Likewise.
	(do_test_with_offset): Use PREADV and PWRITEV macros and check for
	ENOSYS.
	* nptl/tst-cancel4.c (tf_pwritev2): New test.
	(tf_preadv2): Likewise.
	(tf_fsync): Add tf_pwritev2 and tf_preadv2.
	* sysdeps/posix/preadv2.c: Likewise.
	* sysdeps/posix/preadv64v2.c: Likewise.
	* sysdeps/posix/pwritev2.c: Likewise.
	* sysdeps/posix/pwritev64v2.c: Likewise.
	* sysdeps/unix/sysv/linux/kernel-features.h: Add comment for syscall
	support in kernel.
	* sysdeps/unix/sysv/linux/preadv2.c: Likewise.
	* sysdeps/unix/sysv/linux/preadv64v2.c: Likewise.
	* sysdeps/unix/sysv/linux/pwritev2.c: Likewise.
	* sysdeps/unix/sysv/linux/pwritev64v2.c: Likewise.
	* sysdeps/unix/sysv/linux/preadv.c (preadv): Add libc_hidden_def.
	* sysdeps/unix/sysv/linux/preadv64.c (preadv64): Likewise.
	* sysdeps/unix/sysv/linux/pwritev.c (pwritev): Likewise.
	* sysdeps/unix/sysv/linux/pwritev64.c (pwritev64): Likewise.
	* sysdeps/unix/sysv/linux/bits/uio.h: Add supported preadv2/pwritev2
	support flags on Linux.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist (GLIBC_2.26): Add
	preadv2, preadv64v2, pwritev2, pwritev64v2.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist (GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/arm/libc.abilist (GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/hppa/libc.abilist (GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist (GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist (GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/nios2/libc.abilist (GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
	(GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
	(GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
	(GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/sh/libc.abilist (GLIBC_2.26): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/sysv/linux/tile/tilegx/tilegx32/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/sysv/linux/tile/tilegx/tilegx64/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist (GLIBC_2.26):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist (GLIBC_2.26):
	Likewise.
---
 ChangeLog                                          |  91 +++++++++++++++++
 NEWS                                               |   7 ++
 include/sys/uio.h                                  |   6 ++
 manual/llio.texi                                   | 109 +++++++++++++++++++++
 misc/Makefile                                      |   5 +-
 misc/Versions                                      |   3 +
 misc/preadv2.c                                     |  30 ++++++
 misc/preadv64v2.c                                  |  30 ++++++
 misc/pwritev2.c                                    |  30 ++++++
 misc/pwritev64v2.c                                 |  30 ++++++
 misc/sys/uio.h                                     |  41 ++++++++
 misc/tst-preadvwritev-common.c                     |  19 +++-
 misc/tst-preadvwritev2.c                           |  31 ++++++
 misc/tst-preadvwritev64v2.c                        |  33 +++++++
 nptl/tst-cancel4.c                                 |  71 ++++++++++++++
 sysdeps/posix/preadv2.c                            |  38 +++++++
 sysdeps/posix/preadv64v2.c                         |  37 +++++++
 sysdeps/posix/pwritev2.c                           |  38 +++++++
 sysdeps/posix/pwritev64v2.c                        |  38 +++++++
 sysdeps/unix/sysv/linux/aarch64/libc.abilist       |   5 +
 sysdeps/unix/sysv/linux/alpha/libc.abilist         |   5 +
 sysdeps/unix/sysv/linux/arm/libc.abilist           |   5 +
 sysdeps/unix/sysv/linux/bits/uio.h                 |   6 ++
 sysdeps/unix/sysv/linux/hppa/libc.abilist          |   5 +
 sysdeps/unix/sysv/linux/i386/libc.abilist          |   5 +
 sysdeps/unix/sysv/linux/ia64/libc.abilist          |   5 +
 sysdeps/unix/sysv/linux/kernel-features.h          |   5 +
 sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist |   5 +
 sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist   |   5 +
 sysdeps/unix/sysv/linux/microblaze/libc.abilist    |   5 +
 .../unix/sysv/linux/mips/mips32/fpu/libc.abilist   |   5 +
 .../unix/sysv/linux/mips/mips32/nofpu/libc.abilist |   5 +
 .../unix/sysv/linux/mips/mips64/n32/libc.abilist   |   5 +
 .../unix/sysv/linux/mips/mips64/n64/libc.abilist   |   5 +
 sysdeps/unix/sysv/linux/nios2/libc.abilist         |   5 +
 .../sysv/linux/powerpc/powerpc32/fpu/libc.abilist  |   5 +
 .../linux/powerpc/powerpc32/nofpu/libc.abilist     |   5 +
 .../sysv/linux/powerpc/powerpc64/libc-le.abilist   |   5 +
 .../unix/sysv/linux/powerpc/powerpc64/libc.abilist |   5 +
 sysdeps/unix/sysv/linux/preadv.c                   |   2 +
 sysdeps/unix/sysv/linux/preadv2.c                  |  55 +++++++++++
 sysdeps/unix/sysv/linux/preadv64.c                 |   2 +
 sysdeps/unix/sysv/linux/preadv64v2.c               |  55 +++++++++++
 sysdeps/unix/sysv/linux/pwrite64.c                 |   1 +
 sysdeps/unix/sysv/linux/pwritev.c                  |   2 +
 sysdeps/unix/sysv/linux/pwritev2.c                 |  51 ++++++++++
 sysdeps/unix/sysv/linux/pwritev64.c                |   2 +
 sysdeps/unix/sysv/linux/pwritev64v2.c              |  55 +++++++++++
 sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist  |   5 +
 sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist  |   5 +
 sysdeps/unix/sysv/linux/sh/libc.abilist            |   5 +
 sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist |   5 +
 sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist |   5 +
 .../sysv/linux/tile/tilegx/tilegx32/libc.abilist   |   5 +
 .../sysv/linux/tile/tilegx/tilegx64/libc.abilist   |   5 +
 sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist  |   5 +
 sysdeps/unix/sysv/linux/x86_64/64/libc.abilist     |   5 +
 sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist    |   5 +
 58 files changed, 1058 insertions(+), 5 deletions(-)
 create mode 100644 misc/preadv2.c
 create mode 100644 misc/preadv64v2.c
 create mode 100644 misc/pwritev2.c
 create mode 100644 misc/pwritev64v2.c
 create mode 100644 misc/tst-preadvwritev2.c
 create mode 100644 misc/tst-preadvwritev64v2.c
 create mode 100644 sysdeps/posix/preadv2.c
 create mode 100644 sysdeps/posix/preadv64v2.c
 create mode 100644 sysdeps/posix/pwritev2.c
 create mode 100644 sysdeps/posix/pwritev64v2.c
 create mode 100644 sysdeps/unix/sysv/linux/preadv2.c
 create mode 100644 sysdeps/unix/sysv/linux/preadv64v2.c
 create mode 100644 sysdeps/unix/sysv/linux/pwritev2.c
 create mode 100644 sysdeps/unix/sysv/linux/pwritev64v2.c

-- 
2.7.4

Comments

Adhemerval Zanella May 11, 2017, 7:01 p.m. | #1
Ping.

On 04/05/2017 09:43, Adhemerval Zanella wrote:
> Change from previous version:

> 

>    * Add unsupported flag check for Linux implementation.

> 

>    * Unsupported/invalid flags now return EOPNOTSUPP instead of

>      EINVAL.

> 

>    * Add comment about preadv2 and pwritev2 support on kernel-features.h.

> 

>    * Add NEWS entry.

> 

>    * Fix typo in documentation.

>         

> --

> 

> This patch adds support of preadv2 and pwritev2 which are similar to

> preadv/pwritev but adds an extra flag argument.  As for preadv/pwritev

> both interfaces are added a non-standard standard GNU API.

> 

> On default 'posix' implementation trying to emulate the Linux supported

> flags is troublesome:

> 

>    * We can not temporary change the file state of the O_DSYNC and O_SYNC

>      flags to emulate RWF_{D}SYNC (attempts to change the state of using

>      fcntl are silently ignored).

> 

>    * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal

>      semantic not provided by any other flag (O_NONBLOCK for instance).

> 

> So default sysdeps/posix implementations fails with EINVAL for any non

> supported flag (which are none currently) calls generic preadv/pwritev.

> Basically, it supports only preadv2 called as preadv (with flags sets

> to 0).

> 

> The Linux one uses the preadv2/pwritev2 syscall if defined, otherwise it

> call preadv/writev.  Instead of using the previous __ASSUME_* to

> unconditionally issue the syscall (and avoid building the fallback routine),

> it call pread/write if the preadv2/pwritev2 syscalls fails.  The idea

> is just avoid adding another __ASSUME_* and checking each architecture

> on every kernel bump and simplify code conditionals.

> 

> Checked on x86_64-linux-gnu and on i686-linux-gnu and a check with

> run-built-tests=no on aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabihf,

> ia64-linux-gnu, m68k-linux-gnu, microblaze-linux-gnu, mips{64,64n32}-linux-gnu,

> nios2-linux-gnu, powerpc{64,64le}-linux-gnu, s390{x}-linux-gnu,

> sparc{64,v9}-linux-gnu, tile{gx,pro}-linux-gnu, and sh4-linux-gnu (all using

> gcc 6.3).

> 

> 	* NEWS: Add note about pwritev2 and preadv2 inclusion.

> 	* misc/Makefile (routines): Add preadv2, preadv64v2, pwritev2, and

> 	pwritev64v2.

> 	(tests): Add tst-preadvwritev2 and tst-preadvwritev64v2.

> 	* misc/Versions (GLIBC_2.26): Add preadv2, preadv64v2, pwritev2, and

> 	pwritev64v2.

> 	* misc/preadv2.c: New file.

> 	* misc/preadv64v2.c: Likewise.

> 	* misc/pwritev2.c: Likewise.

> 	* misc/pwritev64v2.c: Likewise.

> 	* misc/tst-preadvwritev2.c: Likewise.

> 	* misc/tst-preadvwritev64v2.c: Likewise.

> 	* manual/llio.texi: Add preadv2 and pwritev2 documentation.

> 	* misc/sys/uio.h [__USE_GNU && !__USE_FILE_OFFSET64] (preadv2): New

> 	prototype.

> 	[__USE_GNU && !__USE_FILE_OFFSET64] (pwritev2):	Likewise.

> 	[__USE_GNU && __USE_FILE_OFFSET64] (preadv64v2): Likewise.

> 	[__USE_GNU && __USE_FILE_OFFSET64] (pwritev64v2): Likewise.

> 	* misc/tst-preadvwritev-common.c (PREADV): Define if not defined.

> 	(PWRITEV): Likewise.

> 	(do_test_with_offset): Use PREADV and PWRITEV macros and check for

> 	ENOSYS.

> 	* nptl/tst-cancel4.c (tf_pwritev2): New test.

> 	(tf_preadv2): Likewise.

> 	(tf_fsync): Add tf_pwritev2 and tf_preadv2.

> 	* sysdeps/posix/preadv2.c: Likewise.

> 	* sysdeps/posix/preadv64v2.c: Likewise.

> 	* sysdeps/posix/pwritev2.c: Likewise.

> 	* sysdeps/posix/pwritev64v2.c: Likewise.

> 	* sysdeps/unix/sysv/linux/kernel-features.h: Add comment for syscall

> 	support in kernel.

> 	* sysdeps/unix/sysv/linux/preadv2.c: Likewise.

> 	* sysdeps/unix/sysv/linux/preadv64v2.c: Likewise.

> 	* sysdeps/unix/sysv/linux/pwritev2.c: Likewise.

> 	* sysdeps/unix/sysv/linux/pwritev64v2.c: Likewise.

> 	* sysdeps/unix/sysv/linux/preadv.c (preadv): Add libc_hidden_def.

> 	* sysdeps/unix/sysv/linux/preadv64.c (preadv64): Likewise.

> 	* sysdeps/unix/sysv/linux/pwritev.c (pwritev): Likewise.

> 	* sysdeps/unix/sysv/linux/pwritev64.c (pwritev64): Likewise.

> 	* sysdeps/unix/sysv/linux/bits/uio.h: Add supported preadv2/pwritev2

> 	support flags on Linux.

> 	* sysdeps/unix/sysv/linux/aarch64/libc.abilist (GLIBC_2.26): Add

> 	preadv2, preadv64v2, pwritev2, pwritev64v2.

> 	* sysdeps/unix/sysv/linux/alpha/libc.abilist (GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/arm/libc.abilist (GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/hppa/libc.abilist (GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/i386/libc.abilist (GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/ia64/libc.abilist (GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/microblaze/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/nios2/libc.abilist (GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist

> 	(GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist

> 	(GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist

> 	(GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/sh/libc.abilist (GLIBC_2.26): Likewise.

> 	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/sysv/linux/tile/tilegx/tilegx32/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/sysv/linux/tile/tilegx/tilegx64/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist (GLIBC_2.26):

> 	Likewise.

> 	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist (GLIBC_2.26):

> 	Likewise.

> ---

>  ChangeLog                                          |  91 +++++++++++++++++

>  NEWS                                               |   7 ++

>  include/sys/uio.h                                  |   6 ++

>  manual/llio.texi                                   | 109 +++++++++++++++++++++

>  misc/Makefile                                      |   5 +-

>  misc/Versions                                      |   3 +

>  misc/preadv2.c                                     |  30 ++++++

>  misc/preadv64v2.c                                  |  30 ++++++

>  misc/pwritev2.c                                    |  30 ++++++

>  misc/pwritev64v2.c                                 |  30 ++++++

>  misc/sys/uio.h                                     |  41 ++++++++

>  misc/tst-preadvwritev-common.c                     |  19 +++-

>  misc/tst-preadvwritev2.c                           |  31 ++++++

>  misc/tst-preadvwritev64v2.c                        |  33 +++++++

>  nptl/tst-cancel4.c                                 |  71 ++++++++++++++

>  sysdeps/posix/preadv2.c                            |  38 +++++++

>  sysdeps/posix/preadv64v2.c                         |  37 +++++++

>  sysdeps/posix/pwritev2.c                           |  38 +++++++

>  sysdeps/posix/pwritev64v2.c                        |  38 +++++++

>  sysdeps/unix/sysv/linux/aarch64/libc.abilist       |   5 +

>  sysdeps/unix/sysv/linux/alpha/libc.abilist         |   5 +

>  sysdeps/unix/sysv/linux/arm/libc.abilist           |   5 +

>  sysdeps/unix/sysv/linux/bits/uio.h                 |   6 ++

>  sysdeps/unix/sysv/linux/hppa/libc.abilist          |   5 +

>  sysdeps/unix/sysv/linux/i386/libc.abilist          |   5 +

>  sysdeps/unix/sysv/linux/ia64/libc.abilist          |   5 +

>  sysdeps/unix/sysv/linux/kernel-features.h          |   5 +

>  sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist |   5 +

>  sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist   |   5 +

>  sysdeps/unix/sysv/linux/microblaze/libc.abilist    |   5 +

>  .../unix/sysv/linux/mips/mips32/fpu/libc.abilist   |   5 +

>  .../unix/sysv/linux/mips/mips32/nofpu/libc.abilist |   5 +

>  .../unix/sysv/linux/mips/mips64/n32/libc.abilist   |   5 +

>  .../unix/sysv/linux/mips/mips64/n64/libc.abilist   |   5 +

>  sysdeps/unix/sysv/linux/nios2/libc.abilist         |   5 +

>  .../sysv/linux/powerpc/powerpc32/fpu/libc.abilist  |   5 +

>  .../linux/powerpc/powerpc32/nofpu/libc.abilist     |   5 +

>  .../sysv/linux/powerpc/powerpc64/libc-le.abilist   |   5 +

>  .../unix/sysv/linux/powerpc/powerpc64/libc.abilist |   5 +

>  sysdeps/unix/sysv/linux/preadv.c                   |   2 +

>  sysdeps/unix/sysv/linux/preadv2.c                  |  55 +++++++++++

>  sysdeps/unix/sysv/linux/preadv64.c                 |   2 +

>  sysdeps/unix/sysv/linux/preadv64v2.c               |  55 +++++++++++

>  sysdeps/unix/sysv/linux/pwrite64.c                 |   1 +

>  sysdeps/unix/sysv/linux/pwritev.c                  |   2 +

>  sysdeps/unix/sysv/linux/pwritev2.c                 |  51 ++++++++++

>  sysdeps/unix/sysv/linux/pwritev64.c                |   2 +

>  sysdeps/unix/sysv/linux/pwritev64v2.c              |  55 +++++++++++

>  sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist  |   5 +

>  sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist  |   5 +

>  sysdeps/unix/sysv/linux/sh/libc.abilist            |   5 +

>  sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist |   5 +

>  sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist |   5 +

>  .../sysv/linux/tile/tilegx/tilegx32/libc.abilist   |   5 +

>  .../sysv/linux/tile/tilegx/tilegx64/libc.abilist   |   5 +

>  sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist  |   5 +

>  sysdeps/unix/sysv/linux/x86_64/64/libc.abilist     |   5 +

>  sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist    |   5 +

>  58 files changed, 1058 insertions(+), 5 deletions(-)

>  create mode 100644 misc/preadv2.c

>  create mode 100644 misc/preadv64v2.c

>  create mode 100644 misc/pwritev2.c

>  create mode 100644 misc/pwritev64v2.c

>  create mode 100644 misc/tst-preadvwritev2.c

>  create mode 100644 misc/tst-preadvwritev64v2.c

>  create mode 100644 sysdeps/posix/preadv2.c

>  create mode 100644 sysdeps/posix/preadv64v2.c

>  create mode 100644 sysdeps/posix/pwritev2.c

>  create mode 100644 sysdeps/posix/pwritev64v2.c

>  create mode 100644 sysdeps/unix/sysv/linux/preadv2.c

>  create mode 100644 sysdeps/unix/sysv/linux/preadv64v2.c

>  create mode 100644 sysdeps/unix/sysv/linux/pwritev2.c

>  create mode 100644 sysdeps/unix/sysv/linux/pwritev64v2.c

> 

> diff --git a/NEWS b/NEWS

> index 5558ca3..afad4b1 100644

> --- a/NEWS

> +++ b/NEWS

> @@ -57,6 +57,13 @@ Version 2.26

>    be added on next major revision of POSIX, so current support is enabled

>    with _GNU_SOURCE.

>  

> +* New preadv2 and pwritev2 are added to libc.  They are Linux extensions to

> +  preadv and pwritev with an additional flag argument where it is possible

> +  to set high priority or use O_DSYNC or O_SYNC for an specific IO operation.

> +  For complete support it requires Linux kernel version 4.6, otherwise a

> +  compat implementation will be used (which refuses all flags and routes it

> +  to preadv or pwritev).

> +

>  Security related changes:

>  

>  * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,

> diff --git a/include/sys/uio.h b/include/sys/uio.h

> index f44ce18..20860bf 100644

> --- a/include/sys/uio.h

> +++ b/include/sys/uio.h

> @@ -7,5 +7,11 @@ extern ssize_t __readv (int __fd, const struct iovec *__iovec,

>  			int __count);

>  extern ssize_t __writev (int __fd, const struct iovec *__iovec,

>  			 int __count);

> +

> +/* Used for p{read,write}{v64}v2 implementation.  */

> +libc_hidden_proto (preadv)

> +libc_hidden_proto (preadv64)

> +libc_hidden_proto (pwritev)

> +libc_hidden_proto (pwritev64)

>  #endif

>  #endif

> diff --git a/manual/llio.texi b/manual/llio.texi

> index dae3754..404a966 100644

> --- a/manual/llio.texi

> +++ b/manual/llio.texi

> @@ -756,6 +756,115 @@ When the source file is compiled using @code{_FILE_OFFSET_BITS == 64} on a

>  @code{pwritev} and so transparently replaces the 32 bit interface.

>  @end deftypefun

>  

> +@comment sys/uio.h

> +@comment GNU

> +@deftypefun ssize_t preadv2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off_t @var{offset}, int @var{flags})

> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}

> +@c This is a syscall for Linux v4.6.  The sysdeps/posix fallback emulation

> +@c is also MT-Safe since it calls preadv.

> +

> +This function is similar to the @code{preadv} function, with the difference

> +it adds an extra @var{flags} parameter of type @code{int}.  The supported

> +@var{flags} are dependent of the underlying system.  For Linux it supports:

> +

> +@vtable @code

> +@item RWF_HIPRI

> +High priority request.  This adds a flag that tells the file system that

> +this is a high priority request for which it is worth to poll the hardware.

> +The flag is purely advisory and can be ignored if not supported.  The

> +@var{fd} must be opened using @code{O_DIRECT}.

> +

> +@item RWF_DSYNC

> +Per-IO synchronization as if the file was opened with @code{O_DSYNC} flag.

> +

> +@item RWF_SYNC

> +Per-IO synchronization as if the file was opened with @code{O_SYNC} flag.

> +@end vtable

> +

> +When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} the

> +@code{preadv2} function is in fact @code{preadv64v2} and the type

> +@code{off_t} has 64 bits, which makes it possible to handle files up to

> +@twoexp{63} bytes in length.

> +

> +The return value is a count of bytes (@emph{not} buffers) read, @math{0}

> +indicating end-of-file, or @math{-1} indicating an error.  The possible

> +errors are the same as in @code{preadv} with the addition of:

> +

> +@table @code

> +

> +@item EOPNOTSUPP

> +

> +@c The default sysdeps/posix code will return it for any flags value

> +@c different than 0.

> +An unsupported @var{flags} was used.

> +

> +@end table

> +

> +@end deftypefun

> +

> +@comment unistd.h

> +@comment GNU

> +@deftypefun ssize_t preadv64v2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off64_t @var{offset}, int @var{flags})

> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}

> +@c This is a syscall for Linux v4.6.  The sysdeps/posix fallback emulation

> +@c is also MT-Safe since it calls preadv.

> +

> +This function is similar to the @code{preadv2} function with the difference

> +is that the @var{offset} parameter is of type @code{off64_t} instead of

> +@code{off_t}.  It makes it possible on 32 bit machines to address

> +files larger than @twoexp{31} bytes and up to @twoexp{63} bytes.  The

> +file descriptor @code{filedes} must be opened using @code{open64} since

> +otherwise the large offsets possible with @code{off64_t} will lead to

> +errors with a descriptor in small file mode.

> +

> +When the source file is compiled using @code{_FILE_OFFSET_BITS == 64} on a

> +32 bit machine this function is actually available under the name

> +@code{preadv2} and so transparently replaces the 32 bit interface.

> +@end deftypefun

> +

> +

> +@comment sys/uio.h

> +@comment GNU

> +@deftypefun ssize_t pwritev2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off_t @var{offset}, int @var{flags})

> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}

> +@c This is a syscall for Linux v4.6.  The sysdeps/posix fallback emulation

> +@c is also MT-Safe since it calls pwritev.

> +

> +This function is similar to the @code{pwritev} function, with the difference

> +it adds an extra @var{flags} parameter of type @code{int}.  The supported

> +@var{flags} are dependent of the underlying system and for Linux it supports

> +the same ones as for @code{preadv2}.

> +

> +When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} the

> +@code{pwritev2} function is in fact @code{pwritev64v2} and the type

> +@code{off_t} has 64 bits, which makes it possible to handle files up to

> +@twoexp{63} bytes in length.

> +

> +The return value is a count of bytes (@emph{not} buffers) write, @math{0}

> +indicating end-of-file, or @math{-1} indicating an error.  The possible

> +errors are the same as in @code{preadv2}.

> +@end deftypefun

> +

> +@comment unistd.h

> +@comment GNU

> +@deftypefun ssize_t pwritev64v2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off64_t @var{offset}, int @var{flags})

> +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}

> +@c This is a syscall for Linux v4.6.  The sysdeps/posix fallback emulation

> +@c is also MT-Safe since it calls pwritev.

> +

> +This function is similar to the @code{pwritev2} function with the difference

> +is that the @var{offset} parameter is of type @code{off64_t} instead of

> +@code{off_t}.  It makes it possible on 32 bit machines to address

> +files larger than @twoexp{31} bytes and up to @twoexp{63} bytes.  The

> +file descriptor @code{filedes} must be opened using @code{open64} since

> +otherwise the large offsets possible with @code{off64_t} will lead to

> +errors with a descriptor in small file mode.

> +

> +When the source file is compiled using @code{_FILE_OFFSET_BITS == 64} on a

> +32 bit machine this function is actually available under the name

> +@code{pwritev2} and so transparently replaces the 32 bit interface.

> +@end deftypefun

> +

>  

>  @node File Position Primitive

>  @section Setting the File Position of a Descriptor

> diff --git a/misc/Makefile b/misc/Makefile

> index 622da67..bed46d7 100644

> --- a/misc/Makefile

> +++ b/misc/Makefile

> @@ -39,6 +39,7 @@ headers	:= sys/uio.h bits/uio.h sys/ioctl.h bits/ioctls.h bits/ioctl-types.h \

>  

>  routines := brk sbrk sstk ioctl \

>  	    readv writev preadv preadv64 pwritev pwritev64 \

> +	    preadv2 preadv64v2 pwritev2 pwritev64v2 \

>  	    setreuid setregid \

>  	    seteuid setegid \

>  	    getpagesize \

> @@ -79,7 +80,9 @@ gpl2lgpl := error.c error.h

>  tests := tst-dirname tst-tsearch tst-fdset tst-efgcvt tst-mntent tst-hsearch \

>  	 tst-error1 tst-pselect tst-insremque tst-mntent2 bug-hsearch1 \

>  	 tst-mntent-blank-corrupt tst-mntent-blank-passno bug18240 \

> -	 tst-preadvwritev tst-preadvwritev64 tst-makedev tst-empty \

> +	 tst-preadvwritev tst-preadvwritev64 tst-preadvwritev2 \

> +	 tst-preadvwritev64v2 \

> +	 tst-makedev tst-empty \

>  	 tst-atomic tst-atomic-long

>  tests-static := tst-empty

>  

> diff --git a/misc/Versions b/misc/Versions

> index f2c90ff..bafda78 100644

> --- a/misc/Versions

> +++ b/misc/Versions

> @@ -155,6 +155,9 @@ libc {

>    GLIBC_2.25 {

>      gnu_dev_major; gnu_dev_minor; gnu_dev_makedev;

>    }

> +  GLIBC_2.26 {

> +    preadv2; preadv64v2; pwritev2; pwritev64v2;

> +  }

>    GLIBC_PRIVATE {

>      __madvise;

>      __mktemp;

> diff --git a/misc/preadv2.c b/misc/preadv2.c

> new file mode 100644

> index 0000000..a62dcaa

> --- /dev/null

> +++ b/misc/preadv2.c

> @@ -0,0 +1,30 @@

> +/* Default implementation of preadv2.

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <sys/uio.h>

> +

> +/* Same as preadv but with an additional flags argument.  */

> +ssize_t

> +preadv2 (int fd, const struct iovec *vector, int count, off_t offset,

> +	 int flags)

> +{

> +  __set_errno (ENOSYS);

> +  return -1;

> +}

> +

> +stub_warning (preadv2)

> diff --git a/misc/preadv64v2.c b/misc/preadv64v2.c

> new file mode 100644

> index 0000000..a802c2f

> --- /dev/null

> +++ b/misc/preadv64v2.c

> @@ -0,0 +1,30 @@

> +/* Default implementation of preadv2 (LFS version).

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <sys/uio.h>

> +

> +/* Same as preadv64 but with an addional flag argument.  */

> +ssize_t

> +preadv64v2 (int fd, const struct iovec *vector, int count, off64_t offset,

> +	    int flags)

> +{

> +  __set_errno (ENOSYS);

> +  return -1;

> +}

> +

> +stub_warning (preadv64v2)

> diff --git a/misc/pwritev2.c b/misc/pwritev2.c

> new file mode 100644

> index 0000000..b9e0727

> --- /dev/null

> +++ b/misc/pwritev2.c

> @@ -0,0 +1,30 @@

> +/* Default implementation of pwritev2.

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <sys/uio.h>

> +

> +/* Same as pwritev but with an additional flags argument.  */

> +ssize_t

> +pwritev2 (int fd, const struct iovec *vector, int count, off_t offset,

> +	  int flags)

> +{

> +  __set_errno (ENOSYS);

> +  return -1;

> +}

> +

> +stub_warning (pwritev2)

> diff --git a/misc/pwritev64v2.c b/misc/pwritev64v2.c

> new file mode 100644

> index 0000000..1f874f0

> --- /dev/null

> +++ b/misc/pwritev64v2.c

> @@ -0,0 +1,30 @@

> +/* Default implementation of pwritev2 (LFS version).

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <sys/uio.h>

> +

> +/* Same as preadv64 but with an addional flag argument.  */

> +ssize_t

> +pwritev64v2 (int fd, const struct iovec *vector, int count, off64_t offset,

> +	     int flags)

> +{

> +  __set_errno (ENOSYS);

> +  return -1;

> +}

> +

> +stub_warning (pwritev64v2)

> diff --git a/misc/sys/uio.h b/misc/sys/uio.h

> index e80f013..66c22f0 100644

> --- a/misc/sys/uio.h

> +++ b/misc/sys/uio.h

> @@ -76,6 +76,7 @@ extern ssize_t preadv (int __fd, const struct iovec *__iovec, int __count,

>     __THROW.  */

>  extern ssize_t pwritev (int __fd, const struct iovec *__iovec, int __count,

>  			__off_t __offset) __wur;

> +

>  # else

>  #  ifdef __REDIRECT

>  extern ssize_t __REDIRECT (preadv, (int __fd, const struct iovec *__iovec,

> @@ -117,6 +118,46 @@ extern ssize_t pwritev64 (int __fd, const struct iovec *__iovec, int __count,

>  # endif

>  #endif	/* Use misc.  */

>  

> +

> +#ifdef __USE_GNU

> +# ifndef __USE_FILE_OFFSET64

> +/* Same as preadv but with an additional flag argumenti defined at uio.h.  */

> +extern ssize_t preadv2 (int __fp, const struct iovec *__iovec, int __count,

> +			__off_t __offset, int ___flags) __wur;

> +

> +/* Same as preadv but with an additional flag argument defined at uio.h.  */

> +extern ssize_t pwritev2 (int __fd, const struct iovec *__iodev, int __count,

> +			 __off_t __offset, int __flags) __wur;

> +

> +# else

> +#  ifdef __REDIRECT

> +extern ssize_t __REDIRECT (pwritev2, (int __fd, const struct iovec *__iovec,

> +				      int __count, __off64_t __offset,

> +				      int __flags),

> +			   pwritev64v2) __wur;

> +extern ssize_t __REDIRECT (preadv2, (int __fd, const struct iovec *__iovec,

> +				     int __count, __off64_t __offset,

> +				     int __flags),

> +			   preadv64v2) __wur;

> +#  else

> +#   define preadv2 preadv64v2

> +#   define pwritev2 pwritev64v2

> +#  endif

> +# endif

> +

> +# ifdef __USE_LARGEFILE64

> +/* Same as preadv but with an additional flag argumenti defined at uio.h.  */

> +extern ssize_t preadv64v2 (int __fp, const struct iovec *__iovec,

> +			   int __count, __off64_t __offset,

> +			   int ___flags) __wur;

> +

> +/* Same as preadv but with an additional flag argument defined at uio.h.  */

> +extern ssize_t pwritev64v2 (int __fd, const struct iovec *__iodev,

> +			    int __count, __off64_t __offset,

> +			    int __flags) __wur;

> +# endif

> +#endif /* Use GNU.  */

> +

>  __END_DECLS

>  

>  #endif /* sys/uio.h */

> diff --git a/misc/tst-preadvwritev-common.c b/misc/tst-preadvwritev-common.c

> index 5540dfb..676d495 100644

> --- a/misc/tst-preadvwritev-common.c

> +++ b/misc/tst-preadvwritev-common.c

> @@ -18,6 +18,7 @@

>  

>  #include <stdio.h>

>  #include <stdint.h>

> +#include <errno.h>

>  #include <string.h>

>  #include <sys/uio.h>

>  #include <sys/stat.h>

> @@ -39,6 +40,16 @@ do_prepare (int argc, char **argv)

>  }

>  #define PREPARE do_prepare

>  

> +#ifndef PREADV

> +# define PREADV(__fd, __iov, __iovcnt, __offset) \

> +  preadv (__fd, __iov, __iovcnt, __offset)

> +#endif

> +

> +#ifndef PWRITEV

> +# define PWRITEV(__fd, __iov, __iovcnt, __offset) \

> +  pwritev (__fd, __iov, __iovcnt, __offset)

> +#endif

> +

>  static int

>  do_test_with_offset (off_t offset)

>  {

> @@ -58,13 +69,13 @@ do_test_with_offset (off_t offset)

>    iov[1].iov_base = buf2;

>    iov[1].iov_len = sizeof buf2;

>  

> -  ret = pwritev (temp_fd, iov, 2, offset);

> +  ret = PWRITEV (temp_fd, iov, 2, offset);

>    if (ret == -1)

>      FAIL_RET ("first pwritev returned -1");

>    if (ret != (sizeof buf1 + sizeof buf2))

>      FAIL_RET ("first pwritev returned an unexpected value");

>  

> -  ret = pwritev (temp_fd, iov, 2, sizeof buf1 + sizeof buf2 + offset);

> +  ret = PWRITEV (temp_fd, iov, 2, sizeof buf1 + sizeof buf2 + offset);

>    if (ret == -1)

>      FAIL_RET ("second pwritev returned -1");

>    if (ret != (sizeof buf1 + sizeof buf2))

> @@ -82,7 +93,7 @@ do_test_with_offset (off_t offset)

>    iov[1].iov_len = sizeof buf4;

>  

>    /* Now read two buffer with 32 and 64 bytes respectively.  */

> -  ret = preadv (temp_fd, iov, 2, offset);

> +  ret = PREADV (temp_fd, iov, 2, offset);

>    if (ret == -1)

>      FAIL_RET ("first preadv returned -1");

>    if (ret != (sizeof buf3 + sizeof buf4))

> @@ -93,7 +104,7 @@ do_test_with_offset (off_t offset)

>    if (memcmp (buf2, buf4, sizeof buf2) != 0)

>      FAIL_RET ("second buffer from first preadv different than expected");

>  

> -  ret = preadv (temp_fd, iov, 2, sizeof buf3 + sizeof buf4 + offset);

> +  ret = PREADV (temp_fd, iov, 2, sizeof buf3 + sizeof buf4 + offset);

>    if (ret == -1)

>      FAIL_RET ("second preadv returned -1");

>    if (ret != (sizeof buf3 + sizeof buf4))

> diff --git a/misc/tst-preadvwritev2.c b/misc/tst-preadvwritev2.c

> new file mode 100644

> index 0000000..cf36272

> --- /dev/null

> +++ b/misc/tst-preadvwritev2.c

> @@ -0,0 +1,31 @@

> +/* Tests for preadv2 and pwritev2.

> +   Copyright (C) 2016-2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#define PREADV(__fd, __iov, __iovcnt, __offset) \

> +  preadv2 (__fd, __iov, __iovcnt, __offset, 0)

> +

> +#define PWRITEV(__fd, __iov, __iovcnt, __offset) \

> +  pwritev2 (__fd, __iov, __iovcnt, __offset, 0)

> +

> +#include "tst-preadvwritev-common.c"

> +

> +static int

> +do_test (void)

> +{

> +  return do_test_with_offset (0);

> +}

> diff --git a/misc/tst-preadvwritev64v2.c b/misc/tst-preadvwritev64v2.c

> new file mode 100644

> index 0000000..8d0c48e

> --- /dev/null

> +++ b/misc/tst-preadvwritev64v2.c

> @@ -0,0 +1,33 @@

> +/* Tests for preadv2 and pwritev2 (LFS version).

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#define _FILE_OFFSET_BITS 64

> +

> +#define PREADV(__fd, __iov, __iovcnt, __offset) \

> +  preadv2 (__fd, __iov, __iovcnt, __offset, 0)

> +

> +#define PWRITEV(__fd, __iov, __iovcnt, __offset) \

> +  pwritev2 (__fd, __iov, __iovcnt, __offset, 0)

> +

> +#include "tst-preadvwritev-common.c"

> +

> +static int

> +do_test (void)

> +{

> +  return do_test_with_offset (0);

> +}

> diff --git a/nptl/tst-cancel4.c b/nptl/tst-cancel4.c

> index e66961f..7a560a1 100644

> --- a/nptl/tst-cancel4.c

> +++ b/nptl/tst-cancel4.c

> @@ -1079,6 +1079,75 @@ tf_pwritev (void *arg)

>  }

>  

>  static void *

> +tf_pwritev2 (void *arg)

> +{

> +  int fd;

> +

> +  if (arg == NULL)

> +    /* XXX If somebody can provide a portable test case in which pwritev2

> +       blocks we can enable this test to run in both rounds.  */

> +    abort ();

> +

> +  errno = 0;

> +

> +  char fname[] = "/tmp/tst-cancel4-fd-XXXXXX";

> +  tempfd = fd = mkstemp (fname);

> +  if (fd == -1)

> +    FAIL_EXIT1 ("mkstemp: %m");

> +  unlink (fname);

> +

> +  xpthread_barrier_wait (&b2);

> +

> +  xpthread_barrier_wait (&b2);

> +

> +  ssize_t s;

> +  pthread_cleanup_push (cl, NULL);

> +

> +  char buf[WRITE_BUFFER_SIZE];

> +  memset (buf, '\0', sizeof (buf));

> +  struct iovec iov[1] = { [0] = { .iov_base = buf, .iov_len = sizeof (buf) } };

> +  s = pwritev2 (fd, iov, 1, 0, 0);

> +

> +  pthread_cleanup_pop (0);

> +

> +  FAIL_EXIT1 ("pwritev2 returns with %zd", s);

> +}

> +

> +static void *

> +tf_preadv2 (void *arg)

> +{

> +  int fd;

> +

> +  if (arg == NULL)

> +    /* XXX If somebody can provide a portable test case in which preadv2

> +       blocks we can enable this test to run in both rounds.  */

> +    abort ();

> +

> +  errno = 0;

> +

> +  char fname[] = "/tmp/tst-cancel4-fd-XXXXXX";

> +  tempfd = fd = mkstemp (fname);

> +  if (fd == -1)

> +    FAIL_EXIT1 ("mkstemp failed: %m");

> +  unlink (fname);

> +

> +  xpthread_barrier_wait (&b2);

> +

> +  xpthread_barrier_wait (&b2);

> +

> +  ssize_t s;

> +  pthread_cleanup_push (cl, NULL);

> +

> +  char buf[100];

> +  struct iovec iov[1] = { [0] = { .iov_base = buf, .iov_len = sizeof (buf) } };

> +  s = preadv2 (fd, iov, 1, 0, 0);

> +

> +  pthread_cleanup_pop (0);

> +

> +  FAIL_EXIT1 ("preadv2 returns with %zd", s);

> +}

> +

> +static void *

>  tf_fsync (void *arg)

>  {

>    if (arg == NULL)

> @@ -1473,7 +1542,9 @@ struct cancel_tests tests[] =

>    ADD_TEST (recvfrom, 2, 0),

>    ADD_TEST (recvmsg, 2, 0),

>    ADD_TEST (preadv, 2, 1),

> +  ADD_TEST (preadv2, 2, 1),

>    ADD_TEST (pwritev, 2, 1),

> +  ADD_TEST (pwritev2, 2, 1),

>    ADD_TEST (open, 2, 1),

>    ADD_TEST (close, 2, 1),

>    ADD_TEST (pread, 2, 1),

> diff --git a/sysdeps/posix/preadv2.c b/sysdeps/posix/preadv2.c

> new file mode 100644

> index 0000000..2a7cf11

> --- /dev/null

> +++ b/sysdeps/posix/preadv2.c

> @@ -0,0 +1,38 @@

> +/* Generic version of preadv2.

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <unistd.h>

> +#include <sys/uio.h>

> +

> +#ifndef __OFF_T_MATCHES_OFF64_T

> +

> +/* Since we define no flags for preadv2 just route to preadv.  */

> +ssize_t

> +preadv2 (int fd, const struct iovec *vector, int count, OFF_T offset,

> +	 int flags)

> +{

> +  if (flags != 0)

> +    {

> +      __set_errno (EOPNOTSUPP);

> +      return -1;

> +    }

> +

> +  return preadv (fd, vector, count, offset);

> +}

> +

> +#endif

> diff --git a/sysdeps/posix/preadv64v2.c b/sysdeps/posix/preadv64v2.c

> new file mode 100644

> index 0000000..e084f3f

> --- /dev/null

> +++ b/sysdeps/posix/preadv64v2.c

> @@ -0,0 +1,37 @@

> +/* Generic version of preadv2.

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <unistd.>

> +#include <sys/uio.h>

> +

> +ssize_t

> +preadv64v2 (int fd, const struct iovec *vector, int count, OFF_T offset,

> +	    int flags)

> +{

> +  if (flags != 0)

> +    {

> +      __set_errno (EOPNOTSUPP);

> +      return -1;

> +    }

> +

> +  return preadv64 (fd, vector, count, offset);

> +}

> +

> +#ifdef __OFF_T_MATCHES_OFF64_T

> +strong_alias (preadv64v2, preadv2)

> +#endif

> diff --git a/sysdeps/posix/pwritev2.c b/sysdeps/posix/pwritev2.c

> new file mode 100644

> index 0000000..5b7650c

> --- /dev/null

> +++ b/sysdeps/posix/pwritev2.c

> @@ -0,0 +1,38 @@

> +/* Generic version of pwritev2.

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <unistd.h>

> +#include <sys/uio.h>

> +

> +#ifndef __OFF_T_MATCHES_OFF64_T

> +

> +/* Since we define no flags for pwritev2 just route to pwritev.  */

> +ssize_t

> +pwritev2 (int fd, const struct iovec *vector, int count, OFF_T offset,

> +	  int flags)

> +{

> +  if (flags != 0)

> +    {

> +      __set_errno (EOPNOTSUPP);

> +      return -1;

> +    }

> +

> +  return pwritev (fd, vector, count, offset);

> +}

> +

> +#endif

> diff --git a/sysdeps/posix/pwritev64v2.c b/sysdeps/posix/pwritev64v2.c

> new file mode 100644

> index 0000000..d9727b9

> --- /dev/null

> +++ b/sysdeps/posix/pwritev64v2.c

> @@ -0,0 +1,38 @@

> +/* Generic version of pwritev2.

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <unistd.h>

> +#include <sys/uio.h>

> +

> +/* Since we define no flags for pwritev2 just route to pwritev.  */ 

> +ssize_t

> +pwritev64v2 (int fd, const struct iovec *vector, int count, OFF_T offset,

> +	     int flags)

> +{

> +  if (flags != 0)

> +    {

> +      __set_errno (EOPNOTSUPP);

> +      return -1;

> +    }

> +

> +  return pwritev64 (fd, vector, count, offset);

> +}

> +

> +#ifdef __OFF_T_MATCHES_OFF64_T

> +strong_alias (pwritev64v2, pwritev2)

> +#endif

> diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist

> index 58d768c..296f2a5 100644

> --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist

> @@ -2097,3 +2097,8 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

> diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist

> index 906050d..8006e72 100644

> --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist

> @@ -2008,6 +2008,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist

> index 66112dd..29f9688 100644

> --- a/sysdeps/unix/sysv/linux/arm/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/arm/libc.abilist

> @@ -98,6 +98,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.4 GLIBC_2.4 A

>  GLIBC_2.4 _Exit F

>  GLIBC_2.4 _IO_2_1_stderr_ D 0xa0

> diff --git a/sysdeps/unix/sysv/linux/bits/uio.h b/sysdeps/unix/sysv/linux/bits/uio.h

> index 1583f04..d5701f8 100644

> --- a/sysdeps/unix/sysv/linux/bits/uio.h

> +++ b/sysdeps/unix/sysv/linux/bits/uio.h

> @@ -69,4 +69,10 @@ extern ssize_t process_vm_writev (pid_t __pid, const struct iovec *__lvec,

>  __END_DECLS

>  

>  # endif

> +

> +/* Flags for preadv2/pwritev2: */

> +#define RWF_HIPRI	0x00000001 /* High priority request.  */

> +#define RWF_DSYNC	0x00000002 /* per-IO O_DSYNC.  */

> +#define RWF_SYNC	0x00000004 /* per-IO O_SYNC.  */

> +

>  #endif

> diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist

> index 3ddadd2..e9cfbaf 100644

> --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist

> @@ -1862,6 +1862,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist

> index 977ab90..c6ad3c3 100644

> --- a/sysdeps/unix/sysv/linux/i386/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist

> @@ -2020,6 +2020,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist

> index c7edb9a..d0055a2 100644

> --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist

> @@ -1884,6 +1884,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h

> index b981466..8ee1af7 100644

> --- a/sysdeps/unix/sysv/linux/kernel-features.h

> +++ b/sysdeps/unix/sysv/linux/kernel-features.h

> @@ -137,3 +137,8 @@

>  /* Support for SysV IPC through wired syscalls.  All supported architectures

>     either support ipc syscall and/or all the ipc correspondent syscalls.  */

>  #define __ASSUME_DIRECT_SYSVIPC_SYSCALLS	1

> +

> +/* Support for p{read,write}v2 was added in 4.6.  However Linux default

> +   implementation does not assume the __ASSUME_* and instead use a fallback

> +   implementation based on p{read,write}v and returning an error for

> +   non supported flags.  */

> diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist

> index 450be4e..3777676 100644

> --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist

> @@ -99,6 +99,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.4 GLIBC_2.4 A

>  GLIBC_2.4 _Exit F

>  GLIBC_2.4 _IO_2_1_stderr_ D 0x98

> diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist

> index 9e016bd..8b1f80c 100644

> --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist

> @@ -1976,6 +1976,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/microblaze/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/libc.abilist

> index 1a455be..d4db9a8 100644

> --- a/sysdeps/unix/sysv/linux/microblaze/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/microblaze/libc.abilist

> @@ -2097,3 +2097,8 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist

> index 8eb5e66..f430bdb 100644

> --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist

> @@ -1951,6 +1951,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist

> index 416d9ac..a4dca19 100644

> --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist

> @@ -1949,6 +1949,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist

> index f4949e5..0814fa8 100644

> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist

> @@ -1947,6 +1947,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist

> index c7375ae..a0bdeff 100644

> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist

> @@ -1942,6 +1942,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist

> index 724a0e3..b201290 100644

> --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist

> @@ -2138,3 +2138,8 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist

> index 2dc32b6..6e7ff24 100644

> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist

> @@ -1980,6 +1980,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist

> index 5658109..19c7c7d 100644

> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist

> @@ -1985,6 +1985,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist

> index c761221..e94ce38 100644

> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist

> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist

> @@ -2185,3 +2185,8 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist

> index 265c769..f3daa33 100644

> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist

> @@ -99,6 +99,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 _Exit F

>  GLIBC_2.3 _IO_2_1_stderr_ D 0xe0

> diff --git a/sysdeps/unix/sysv/linux/preadv.c b/sysdeps/unix/sysv/linux/preadv.c

> index 7d971cc..ecabc8c 100644

> --- a/sysdeps/unix/sysv/linux/preadv.c

> +++ b/sysdeps/unix/sysv/linux/preadv.c

> @@ -50,4 +50,6 @@ preadv (int fd, const struct iovec *vector, int count, off_t offset)

>  #  define OFF_T off_t

>  #  include <sysdeps/posix/preadv_common.c>

>  # endif /* __ASSUME_PREADV  */

> +

> +libc_hidden_def (preadv)

>  #endif

> diff --git a/sysdeps/unix/sysv/linux/preadv2.c b/sysdeps/unix/sysv/linux/preadv2.c

> new file mode 100644

> index 0000000..11fe85e

> --- /dev/null

> +++ b/sysdeps/unix/sysv/linux/preadv2.c

> @@ -0,0 +1,55 @@

> +/* Linux implementation of preadv2.

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <sys/uio.h>

> +#include <sysdep-cancel.h>

> +

> +#ifndef __OFF_T_MATCHES_OFF64_T

> +

> +# if !defined (__NR_preadv2) && defined (__NR_pread64v2)

> +#  define __NR_preadv2 __NR_pread64v2

> +# endif

> +

> +ssize_t

> +preadv2 (int fd, const struct iovec *vector, int count, off_t offset,

> +	 int flags)

> +{

> +# ifdef __NR_preadv2

> +  ssize_t result = SYSCALL_CANCEL (preadv2, fd, vector, count,

> +				   LO_HI_LONG (offset), flags);

> +  if (result >= 0 || errno != ENOSYS)

> +    return result;

> +# endif

> +  /* Trying to emulate the preadv2 syscall flags is troublesome:

> +

> +     * We can not temporary change the file state of the O_DSYNC and O_SYNC

> +       flags to emulate RWF_{D}SYNC (attempts to change the state of using

> +       fcntl are silently ignored).

> +

> +     * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal

> +       semantic not provided by any other flag (O_NONBLOCK for instance).  */

> +

> +  if (flags != 0)

> +    {

> +      __set_errno (EOPNOTSUPP);

> +      return -1;

> +    }

> +  return preadv (fd, vector, count, offset);

> +}

> +

> +#endif

> diff --git a/sysdeps/unix/sysv/linux/preadv64.c b/sysdeps/unix/sysv/linux/preadv64.c

> index 66daa74..c96b214 100644

> --- a/sysdeps/unix/sysv/linux/preadv64.c

> +++ b/sysdeps/unix/sysv/linux/preadv64.c

> @@ -48,7 +48,9 @@ preadv64 (int fd, const struct iovec *vector, int count, off64_t offset)

>  # define OFF_T off64_t

>  # include <sysdeps/posix/preadv_common.c>

>  #endif

> +libc_hidden_def (preadv64)

>  

>  #ifdef __OFF_T_MATCHES_OFF64_T

>  strong_alias (preadv64, preadv)

> +libc_hidden_def (preadv)

>  #endif

> diff --git a/sysdeps/unix/sysv/linux/preadv64v2.c b/sysdeps/unix/sysv/linux/preadv64v2.c

> new file mode 100644

> index 0000000..9d7f8c9

> --- /dev/null

> +++ b/sysdeps/unix/sysv/linux/preadv64v2.c

> @@ -0,0 +1,55 @@

> +/* Linux implementation of preadv2 (LFS version).

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <sys/uio.h>

> +#include <sysdep-cancel.h>

> +

> +#if !defined(__NR_preadv64v2) && defined(__NR_preadv2)

> +# define __NR_preadv64v2 __NR_preadv2

> +#endif

> +

> +ssize_t

> +preadv64v2 (int fd, const struct iovec *vector, int count, off64_t offset,

> +	    int flags)

> +{

> +#ifdef __NR_preadv64v2

> +  ssize_t result = SYSCALL_CANCEL (preadv64v2, fd, vector, count,

> +				   LO_HI_LONG (offset), flags);

> +  if (result >= 0 || errno != ENOSYS)

> +    return result;

> +#endif

> +  /* Trying to emulate the preadv2 syscall flags is troublesome:

> +

> +     * We can not temporary change the file state of the O_DSYNC and O_SYNC

> +       flags to emulate RWF_{D}SYNC (attempts to change the state of using

> +       fcntl are silently ignored).

> +

> +     * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal

> +       semantic not provided by any other flag (O_NONBLOCK for instance).  */

> +

> +  if (flags != 0)

> +    {

> +      __set_errno (EOPNOTSUPP);

> +      return -1;

> +    }

> +  return preadv64 (fd, vector, count, offset);

> +}

> +

> +#ifdef __OFF_T_MATCHES_OFF64_T

> +strong_alias (preadv64v2, preadv2)

> +#endif

> diff --git a/sysdeps/unix/sysv/linux/pwrite64.c b/sysdeps/unix/sysv/linux/pwrite64.c

> index 57e5d20..71959c0 100644

> --- a/sysdeps/unix/sysv/linux/pwrite64.c

> +++ b/sysdeps/unix/sysv/linux/pwrite64.c

> @@ -28,6 +28,7 @@ __libc_pwrite64 (int fd, const void *buf, size_t count, off64_t offset)

>  {

>    return SYSCALL_CANCEL (pwrite64, fd, buf, count, SYSCALL_LL64_PRW (offset));

>  }

> +

>  weak_alias (__libc_pwrite64, __pwrite64)

>  libc_hidden_weak (__pwrite64)

>  weak_alias (__libc_pwrite64, pwrite64)

> diff --git a/sysdeps/unix/sysv/linux/pwritev.c b/sysdeps/unix/sysv/linux/pwritev.c

> index ce02996..7545cb3 100644

> --- a/sysdeps/unix/sysv/linux/pwritev.c

> +++ b/sysdeps/unix/sysv/linux/pwritev.c

> @@ -50,4 +50,6 @@ pwritev (int fd, const struct iovec *vector, int count, off_t offset)

>  #  define OFF_T off_t

>  #  include <sysdeps/posix/pwritev_common.c>

>  # endif /* __ASSUME_PREADV  */

> +

> +libc_hidden_def (pwritev)

>  #endif

> diff --git a/sysdeps/unix/sysv/linux/pwritev2.c b/sysdeps/unix/sysv/linux/pwritev2.c

> new file mode 100644

> index 0000000..72f0471

> --- /dev/null

> +++ b/sysdeps/unix/sysv/linux/pwritev2.c

> @@ -0,0 +1,51 @@

> +/* Linux implementation of pwritev2.

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <sys/uio.h>

> +#include <sysdep-cancel.h>

> +

> +#ifndef __OFF_T_MATCHES_OFF64_T

> +

> +ssize_t

> +pwritev2 (int fd, const struct iovec *vector, int count, off_t offset,

> +	  int flags)

> +{

> +# ifdef __NR_pwritev2

> +  ssize_t result = SYSCALL_CANCEL (pwritev2, fd, vector, count,

> +				   LO_HI_LONG (offset), flags);

> +  if (result >= 0 || errno != ENOSYS)

> +    return result;

> +# endif

> +  /* Trying to emulate the pwritev2 syscall flags is troublesome:

> +

> +     * We can not temporary change the file state of the O_DSYNC and O_SYNC

> +       flags to emulate RWF_{D}SYNC (attempts to change the state of using

> +       fcntl are silently ignored).

> +

> +     * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal

> +       semantic not provided by any other flag (O_NONBLOCK for instance).  */

> +

> +  if (flags != 0)

> +    {

> +      __set_errno (EOPNOTSUPP);

> +      return -1;

> +    }

> +  return pwritev (fd, vector, count, offset);

> +}

> +

> +#endif

> diff --git a/sysdeps/unix/sysv/linux/pwritev64.c b/sysdeps/unix/sysv/linux/pwritev64.c

> index 45fb90b..9dc4e55 100644

> --- a/sysdeps/unix/sysv/linux/pwritev64.c

> +++ b/sysdeps/unix/sysv/linux/pwritev64.c

> @@ -48,7 +48,9 @@ pwritev64 (int fd, const struct iovec *vector, int count, off64_t offset)

>  # define OFF_T off64_t

>  # include <sysdeps/posix/pwritev_common.c>

>  #endif

> +libc_hidden_def (pwritev64)

>  

>  #ifdef __OFF_T_MATCHES_OFF64_T

>  strong_alias (pwritev64, pwritev)

> +libc_hidden_def (pwritev)

>  #endif

> diff --git a/sysdeps/unix/sysv/linux/pwritev64v2.c b/sysdeps/unix/sysv/linux/pwritev64v2.c

> new file mode 100644

> index 0000000..def9a0b

> --- /dev/null

> +++ b/sysdeps/unix/sysv/linux/pwritev64v2.c

> @@ -0,0 +1,55 @@

> +/* Linux implementation of pwritev2 (LFS version).

> +   Copyright (C) 2017 Free Software Foundation, Inc.

> +   This file is part of the GNU C Library.

> +

> +   The GNU C Library is free software; you can redistribute it and/or

> +   modify it under the terms of the GNU Lesser General Public

> +   License as published by the Free Software Foundation; either

> +   version 2.1 of the License, or (at your option) any later version.

> +

> +   The GNU C Library is distributed in the hope that it will be useful,

> +   but WITHOUT ANY WARRANTY; without even the implied warranty of

> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

> +   Lesser General Public License for more details.

> +

> +   You should have received a copy of the GNU Lesser General Public

> +   License along with the GNU C Library; if not, see

> +   <http://www.gnu.org/licenses/>.  */

> +

> +#include <sys/uio.h>

> +#include <sysdep-cancel.h>

> +

> +#if !defined(__NR_pwritev64v2) && defined(__NR_pwritev2)

> +# define __NR_pwritev64v2 __NR_pwritev2

> +#endif

> +

> +ssize_t

> +pwritev64v2 (int fd, const struct iovec *vector, int count, off64_t offset,

> +	     int flags)

> +{

> +#ifdef __NR_pwritev64v2

> +  ssize_t result = SYSCALL_CANCEL (pwritev64v2, fd, vector, count,

> +				   LO_HI_LONG (offset), flags);

> +  if (result >= 0 || errno != ENOSYS)

> +    return result;

> +#endif

> +  /* Trying to emulate the pwritev2 syscall flags is troublesome:

> +

> +     * We can not temporary change the file state of the O_DSYNC and O_SYNC

> +       flags to emulate RWF_{D}SYNC (attempts to change the state of using

> +       fcntl are silently ignored).

> +

> +     * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal

> +       semantic not provided by any other flag (O_NONBLOCK for instance).  */

> +

> +  if (flags != 0)

> +    {

> +      __set_errno (EOPNOTSUPP);

> +      return -1;

> +    }

> +  return pwritev64 (fd, vector, count, offset);

> +}

> +

> +#ifdef __OFF_T_MATCHES_OFF64_T

> +strong_alias (pwritev64v2, pwritev2)

> +#endif

> diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist

> index ed1b6bf..eb9e72f 100644

> --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist

> @@ -1980,6 +1980,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist

> index 2e75d29..1402959 100644

> --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist

> @@ -1881,6 +1881,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/sh/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist

> index bd74c0c..e9eefcb 100644

> --- a/sysdeps/unix/sysv/linux/sh/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/sh/libc.abilist

> @@ -1866,6 +1866,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist

> index 5584838..967699e 100644

> --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist

> @@ -1972,6 +1972,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist

> index efedbe2..9dd938a 100644

> --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist

> @@ -1910,6 +1910,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist

> index ffd988a..68c9887 100644

> --- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist

> @@ -2104,3 +2104,8 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

> diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist

> index f0c13ce..97aa0f7 100644

> --- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist

> @@ -2104,3 +2104,8 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

> diff --git a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist

> index ffd988a..68c9887 100644

> --- a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist

> @@ -2104,3 +2104,8 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist

> index f57004c..2032659 100644

> --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist

> @@ -1861,6 +1861,11 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>  GLIBC_2.3 GLIBC_2.3 A

>  GLIBC_2.3 __ctype_b_loc F

>  GLIBC_2.3 __ctype_tolower_loc F

> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist

> index 05629e1..11a278c 100644

> --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist

> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist

> @@ -2104,3 +2104,8 @@ GLIBC_2.25 getrandom F

>  GLIBC_2.25 strfromd F

>  GLIBC_2.25 strfromf F

>  GLIBC_2.25 strfroml F

> +GLIBC_2.26 GLIBC_2.26 A

> +GLIBC_2.26 preadv2 F

> +GLIBC_2.26 preadv64v2 F

> +GLIBC_2.26 pwritev2 F

> +GLIBC_2.26 pwritev64v2 F

>

Patch hide | download patch | download mbox

diff --git a/NEWS b/NEWS
index 5558ca3..afad4b1 100644
--- a/NEWS
+++ b/NEWS
@@ -57,6 +57,13 @@  Version 2.26
   be added on next major revision of POSIX, so current support is enabled
   with _GNU_SOURCE.
 
+* New preadv2 and pwritev2 are added to libc.  They are Linux extensions to
+  preadv and pwritev with an additional flag argument where it is possible
+  to set high priority or use O_DSYNC or O_SYNC for an specific IO operation.
+  For complete support it requires Linux kernel version 4.6, otherwise a
+  compat implementation will be used (which refuses all flags and routes it
+  to preadv or pwritev).
+
 Security related changes:
 
 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
diff --git a/include/sys/uio.h b/include/sys/uio.h
index f44ce18..20860bf 100644
--- a/include/sys/uio.h
+++ b/include/sys/uio.h
@@ -7,5 +7,11 @@  extern ssize_t __readv (int __fd, const struct iovec *__iovec,
 			int __count);
 extern ssize_t __writev (int __fd, const struct iovec *__iovec,
 			 int __count);
+
+/* Used for p{read,write}{v64}v2 implementation.  */
+libc_hidden_proto (preadv)
+libc_hidden_proto (preadv64)
+libc_hidden_proto (pwritev)
+libc_hidden_proto (pwritev64)
 #endif
 #endif
diff --git a/manual/llio.texi b/manual/llio.texi
index dae3754..404a966 100644
--- a/manual/llio.texi
+++ b/manual/llio.texi
@@ -756,6 +756,115 @@  When the source file is compiled using @code{_FILE_OFFSET_BITS == 64} on a
 @code{pwritev} and so transparently replaces the 32 bit interface.
 @end deftypefun
 
+@comment sys/uio.h
+@comment GNU
+@deftypefun ssize_t preadv2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off_t @var{offset}, int @var{flags})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+@c This is a syscall for Linux v4.6.  The sysdeps/posix fallback emulation
+@c is also MT-Safe since it calls preadv.
+
+This function is similar to the @code{preadv} function, with the difference
+it adds an extra @var{flags} parameter of type @code{int}.  The supported
+@var{flags} are dependent of the underlying system.  For Linux it supports:
+
+@vtable @code
+@item RWF_HIPRI
+High priority request.  This adds a flag that tells the file system that
+this is a high priority request for which it is worth to poll the hardware.
+The flag is purely advisory and can be ignored if not supported.  The
+@var{fd} must be opened using @code{O_DIRECT}.
+
+@item RWF_DSYNC
+Per-IO synchronization as if the file was opened with @code{O_DSYNC} flag.
+
+@item RWF_SYNC
+Per-IO synchronization as if the file was opened with @code{O_SYNC} flag.
+@end vtable
+
+When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} the
+@code{preadv2} function is in fact @code{preadv64v2} and the type
+@code{off_t} has 64 bits, which makes it possible to handle files up to
+@twoexp{63} bytes in length.
+
+The return value is a count of bytes (@emph{not} buffers) read, @math{0}
+indicating end-of-file, or @math{-1} indicating an error.  The possible
+errors are the same as in @code{preadv} with the addition of:
+
+@table @code
+
+@item EOPNOTSUPP
+
+@c The default sysdeps/posix code will return it for any flags value
+@c different than 0.
+An unsupported @var{flags} was used.
+
+@end table
+
+@end deftypefun
+
+@comment unistd.h
+@comment GNU
+@deftypefun ssize_t preadv64v2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off64_t @var{offset}, int @var{flags})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+@c This is a syscall for Linux v4.6.  The sysdeps/posix fallback emulation
+@c is also MT-Safe since it calls preadv.
+
+This function is similar to the @code{preadv2} function with the difference
+is that the @var{offset} parameter is of type @code{off64_t} instead of
+@code{off_t}.  It makes it possible on 32 bit machines to address
+files larger than @twoexp{31} bytes and up to @twoexp{63} bytes.  The
+file descriptor @code{filedes} must be opened using @code{open64} since
+otherwise the large offsets possible with @code{off64_t} will lead to
+errors with a descriptor in small file mode.
+
+When the source file is compiled using @code{_FILE_OFFSET_BITS == 64} on a
+32 bit machine this function is actually available under the name
+@code{preadv2} and so transparently replaces the 32 bit interface.
+@end deftypefun
+
+
+@comment sys/uio.h
+@comment GNU
+@deftypefun ssize_t pwritev2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off_t @var{offset}, int @var{flags})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+@c This is a syscall for Linux v4.6.  The sysdeps/posix fallback emulation
+@c is also MT-Safe since it calls pwritev.
+
+This function is similar to the @code{pwritev} function, with the difference
+it adds an extra @var{flags} parameter of type @code{int}.  The supported
+@var{flags} are dependent of the underlying system and for Linux it supports
+the same ones as for @code{preadv2}.
+
+When the source file is compiled with @code{_FILE_OFFSET_BITS == 64} the
+@code{pwritev2} function is in fact @code{pwritev64v2} and the type
+@code{off_t} has 64 bits, which makes it possible to handle files up to
+@twoexp{63} bytes in length.
+
+The return value is a count of bytes (@emph{not} buffers) write, @math{0}
+indicating end-of-file, or @math{-1} indicating an error.  The possible
+errors are the same as in @code{preadv2}.
+@end deftypefun
+
+@comment unistd.h
+@comment GNU
+@deftypefun ssize_t pwritev64v2 (int @var{fd}, const struct iovec *@var{iov}, int @var{iovcnt}, off64_t @var{offset}, int @var{flags})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+@c This is a syscall for Linux v4.6.  The sysdeps/posix fallback emulation
+@c is also MT-Safe since it calls pwritev.
+
+This function is similar to the @code{pwritev2} function with the difference
+is that the @var{offset} parameter is of type @code{off64_t} instead of
+@code{off_t}.  It makes it possible on 32 bit machines to address
+files larger than @twoexp{31} bytes and up to @twoexp{63} bytes.  The
+file descriptor @code{filedes} must be opened using @code{open64} since
+otherwise the large offsets possible with @code{off64_t} will lead to
+errors with a descriptor in small file mode.
+
+When the source file is compiled using @code{_FILE_OFFSET_BITS == 64} on a
+32 bit machine this function is actually available under the name
+@code{pwritev2} and so transparently replaces the 32 bit interface.
+@end deftypefun
+
 
 @node File Position Primitive
 @section Setting the File Position of a Descriptor
diff --git a/misc/Makefile b/misc/Makefile
index 622da67..bed46d7 100644
--- a/misc/Makefile
+++ b/misc/Makefile
@@ -39,6 +39,7 @@  headers	:= sys/uio.h bits/uio.h sys/ioctl.h bits/ioctls.h bits/ioctl-types.h \
 
 routines := brk sbrk sstk ioctl \
 	    readv writev preadv preadv64 pwritev pwritev64 \
+	    preadv2 preadv64v2 pwritev2 pwritev64v2 \
 	    setreuid setregid \
 	    seteuid setegid \
 	    getpagesize \
@@ -79,7 +80,9 @@  gpl2lgpl := error.c error.h
 tests := tst-dirname tst-tsearch tst-fdset tst-efgcvt tst-mntent tst-hsearch \
 	 tst-error1 tst-pselect tst-insremque tst-mntent2 bug-hsearch1 \
 	 tst-mntent-blank-corrupt tst-mntent-blank-passno bug18240 \
-	 tst-preadvwritev tst-preadvwritev64 tst-makedev tst-empty \
+	 tst-preadvwritev tst-preadvwritev64 tst-preadvwritev2 \
+	 tst-preadvwritev64v2 \
+	 tst-makedev tst-empty \
 	 tst-atomic tst-atomic-long
 tests-static := tst-empty
 
diff --git a/misc/Versions b/misc/Versions
index f2c90ff..bafda78 100644
--- a/misc/Versions
+++ b/misc/Versions
@@ -155,6 +155,9 @@  libc {
   GLIBC_2.25 {
     gnu_dev_major; gnu_dev_minor; gnu_dev_makedev;
   }
+  GLIBC_2.26 {
+    preadv2; preadv64v2; pwritev2; pwritev64v2;
+  }
   GLIBC_PRIVATE {
     __madvise;
     __mktemp;
diff --git a/misc/preadv2.c b/misc/preadv2.c
new file mode 100644
index 0000000..a62dcaa
--- /dev/null
+++ b/misc/preadv2.c
@@ -0,0 +1,30 @@ 
+/* Default implementation of preadv2.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/uio.h>
+
+/* Same as preadv but with an additional flags argument.  */
+ssize_t
+preadv2 (int fd, const struct iovec *vector, int count, off_t offset,
+	 int flags)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+stub_warning (preadv2)
diff --git a/misc/preadv64v2.c b/misc/preadv64v2.c
new file mode 100644
index 0000000..a802c2f
--- /dev/null
+++ b/misc/preadv64v2.c
@@ -0,0 +1,30 @@ 
+/* Default implementation of preadv2 (LFS version).
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/uio.h>
+
+/* Same as preadv64 but with an addional flag argument.  */
+ssize_t
+preadv64v2 (int fd, const struct iovec *vector, int count, off64_t offset,
+	    int flags)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+stub_warning (preadv64v2)
diff --git a/misc/pwritev2.c b/misc/pwritev2.c
new file mode 100644
index 0000000..b9e0727
--- /dev/null
+++ b/misc/pwritev2.c
@@ -0,0 +1,30 @@ 
+/* Default implementation of pwritev2.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/uio.h>
+
+/* Same as pwritev but with an additional flags argument.  */
+ssize_t
+pwritev2 (int fd, const struct iovec *vector, int count, off_t offset,
+	  int flags)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+stub_warning (pwritev2)
diff --git a/misc/pwritev64v2.c b/misc/pwritev64v2.c
new file mode 100644
index 0000000..1f874f0
--- /dev/null
+++ b/misc/pwritev64v2.c
@@ -0,0 +1,30 @@ 
+/* Default implementation of pwritev2 (LFS version).
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/uio.h>
+
+/* Same as preadv64 but with an addional flag argument.  */
+ssize_t
+pwritev64v2 (int fd, const struct iovec *vector, int count, off64_t offset,
+	     int flags)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+stub_warning (pwritev64v2)
diff --git a/misc/sys/uio.h b/misc/sys/uio.h
index e80f013..66c22f0 100644
--- a/misc/sys/uio.h
+++ b/misc/sys/uio.h
@@ -76,6 +76,7 @@  extern ssize_t preadv (int __fd, const struct iovec *__iovec, int __count,
    __THROW.  */
 extern ssize_t pwritev (int __fd, const struct iovec *__iovec, int __count,
 			__off_t __offset) __wur;
+
 # else
 #  ifdef __REDIRECT
 extern ssize_t __REDIRECT (preadv, (int __fd, const struct iovec *__iovec,
@@ -117,6 +118,46 @@  extern ssize_t pwritev64 (int __fd, const struct iovec *__iovec, int __count,
 # endif
 #endif	/* Use misc.  */
 
+
+#ifdef __USE_GNU
+# ifndef __USE_FILE_OFFSET64
+/* Same as preadv but with an additional flag argumenti defined at uio.h.  */
+extern ssize_t preadv2 (int __fp, const struct iovec *__iovec, int __count,
+			__off_t __offset, int ___flags) __wur;
+
+/* Same as preadv but with an additional flag argument defined at uio.h.  */
+extern ssize_t pwritev2 (int __fd, const struct iovec *__iodev, int __count,
+			 __off_t __offset, int __flags) __wur;
+
+# else
+#  ifdef __REDIRECT
+extern ssize_t __REDIRECT (pwritev2, (int __fd, const struct iovec *__iovec,
+				      int __count, __off64_t __offset,
+				      int __flags),
+			   pwritev64v2) __wur;
+extern ssize_t __REDIRECT (preadv2, (int __fd, const struct iovec *__iovec,
+				     int __count, __off64_t __offset,
+				     int __flags),
+			   preadv64v2) __wur;
+#  else
+#   define preadv2 preadv64v2
+#   define pwritev2 pwritev64v2
+#  endif
+# endif
+
+# ifdef __USE_LARGEFILE64
+/* Same as preadv but with an additional flag argumenti defined at uio.h.  */
+extern ssize_t preadv64v2 (int __fp, const struct iovec *__iovec,
+			   int __count, __off64_t __offset,
+			   int ___flags) __wur;
+
+/* Same as preadv but with an additional flag argument defined at uio.h.  */
+extern ssize_t pwritev64v2 (int __fd, const struct iovec *__iodev,
+			    int __count, __off64_t __offset,
+			    int __flags) __wur;
+# endif
+#endif /* Use GNU.  */
+
 __END_DECLS
 
 #endif /* sys/uio.h */
diff --git a/misc/tst-preadvwritev-common.c b/misc/tst-preadvwritev-common.c
index 5540dfb..676d495 100644
--- a/misc/tst-preadvwritev-common.c
+++ b/misc/tst-preadvwritev-common.c
@@ -18,6 +18,7 @@ 
 
 #include <stdio.h>
 #include <stdint.h>
+#include <errno.h>
 #include <string.h>
 #include <sys/uio.h>
 #include <sys/stat.h>
@@ -39,6 +40,16 @@  do_prepare (int argc, char **argv)
 }
 #define PREPARE do_prepare
 
+#ifndef PREADV
+# define PREADV(__fd, __iov, __iovcnt, __offset) \
+  preadv (__fd, __iov, __iovcnt, __offset)
+#endif
+
+#ifndef PWRITEV
+# define PWRITEV(__fd, __iov, __iovcnt, __offset) \
+  pwritev (__fd, __iov, __iovcnt, __offset)
+#endif
+
 static int
 do_test_with_offset (off_t offset)
 {
@@ -58,13 +69,13 @@  do_test_with_offset (off_t offset)
   iov[1].iov_base = buf2;
   iov[1].iov_len = sizeof buf2;
 
-  ret = pwritev (temp_fd, iov, 2, offset);
+  ret = PWRITEV (temp_fd, iov, 2, offset);
   if (ret == -1)
     FAIL_RET ("first pwritev returned -1");
   if (ret != (sizeof buf1 + sizeof buf2))
     FAIL_RET ("first pwritev returned an unexpected value");
 
-  ret = pwritev (temp_fd, iov, 2, sizeof buf1 + sizeof buf2 + offset);
+  ret = PWRITEV (temp_fd, iov, 2, sizeof buf1 + sizeof buf2 + offset);
   if (ret == -1)
     FAIL_RET ("second pwritev returned -1");
   if (ret != (sizeof buf1 + sizeof buf2))
@@ -82,7 +93,7 @@  do_test_with_offset (off_t offset)
   iov[1].iov_len = sizeof buf4;
 
   /* Now read two buffer with 32 and 64 bytes respectively.  */
-  ret = preadv (temp_fd, iov, 2, offset);
+  ret = PREADV (temp_fd, iov, 2, offset);
   if (ret == -1)
     FAIL_RET ("first preadv returned -1");
   if (ret != (sizeof buf3 + sizeof buf4))
@@ -93,7 +104,7 @@  do_test_with_offset (off_t offset)
   if (memcmp (buf2, buf4, sizeof buf2) != 0)
     FAIL_RET ("second buffer from first preadv different than expected");
 
-  ret = preadv (temp_fd, iov, 2, sizeof buf3 + sizeof buf4 + offset);
+  ret = PREADV (temp_fd, iov, 2, sizeof buf3 + sizeof buf4 + offset);
   if (ret == -1)
     FAIL_RET ("second preadv returned -1");
   if (ret != (sizeof buf3 + sizeof buf4))
diff --git a/misc/tst-preadvwritev2.c b/misc/tst-preadvwritev2.c
new file mode 100644
index 0000000..cf36272
--- /dev/null
+++ b/misc/tst-preadvwritev2.c
@@ -0,0 +1,31 @@ 
+/* Tests for preadv2 and pwritev2.
+   Copyright (C) 2016-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define PREADV(__fd, __iov, __iovcnt, __offset) \
+  preadv2 (__fd, __iov, __iovcnt, __offset, 0)
+
+#define PWRITEV(__fd, __iov, __iovcnt, __offset) \
+  pwritev2 (__fd, __iov, __iovcnt, __offset, 0)
+
+#include "tst-preadvwritev-common.c"
+
+static int
+do_test (void)
+{
+  return do_test_with_offset (0);
+}
diff --git a/misc/tst-preadvwritev64v2.c b/misc/tst-preadvwritev64v2.c
new file mode 100644
index 0000000..8d0c48e
--- /dev/null
+++ b/misc/tst-preadvwritev64v2.c
@@ -0,0 +1,33 @@ 
+/* Tests for preadv2 and pwritev2 (LFS version).
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define _FILE_OFFSET_BITS 64
+
+#define PREADV(__fd, __iov, __iovcnt, __offset) \
+  preadv2 (__fd, __iov, __iovcnt, __offset, 0)
+
+#define PWRITEV(__fd, __iov, __iovcnt, __offset) \
+  pwritev2 (__fd, __iov, __iovcnt, __offset, 0)
+
+#include "tst-preadvwritev-common.c"
+
+static int
+do_test (void)
+{
+  return do_test_with_offset (0);
+}
diff --git a/nptl/tst-cancel4.c b/nptl/tst-cancel4.c
index e66961f..7a560a1 100644
--- a/nptl/tst-cancel4.c
+++ b/nptl/tst-cancel4.c
@@ -1079,6 +1079,75 @@  tf_pwritev (void *arg)
 }
 
 static void *
+tf_pwritev2 (void *arg)
+{
+  int fd;
+
+  if (arg == NULL)
+    /* XXX If somebody can provide a portable test case in which pwritev2
+       blocks we can enable this test to run in both rounds.  */
+    abort ();
+
+  errno = 0;
+
+  char fname[] = "/tmp/tst-cancel4-fd-XXXXXX";
+  tempfd = fd = mkstemp (fname);
+  if (fd == -1)
+    FAIL_EXIT1 ("mkstemp: %m");
+  unlink (fname);
+
+  xpthread_barrier_wait (&b2);
+
+  xpthread_barrier_wait (&b2);
+
+  ssize_t s;
+  pthread_cleanup_push (cl, NULL);
+
+  char buf[WRITE_BUFFER_SIZE];
+  memset (buf, '\0', sizeof (buf));
+  struct iovec iov[1] = { [0] = { .iov_base = buf, .iov_len = sizeof (buf) } };
+  s = pwritev2 (fd, iov, 1, 0, 0);
+
+  pthread_cleanup_pop (0);
+
+  FAIL_EXIT1 ("pwritev2 returns with %zd", s);
+}
+
+static void *
+tf_preadv2 (void *arg)
+{
+  int fd;
+
+  if (arg == NULL)
+    /* XXX If somebody can provide a portable test case in which preadv2
+       blocks we can enable this test to run in both rounds.  */
+    abort ();
+
+  errno = 0;
+
+  char fname[] = "/tmp/tst-cancel4-fd-XXXXXX";
+  tempfd = fd = mkstemp (fname);
+  if (fd == -1)
+    FAIL_EXIT1 ("mkstemp failed: %m");
+  unlink (fname);
+
+  xpthread_barrier_wait (&b2);
+
+  xpthread_barrier_wait (&b2);
+
+  ssize_t s;
+  pthread_cleanup_push (cl, NULL);
+
+  char buf[100];
+  struct iovec iov[1] = { [0] = { .iov_base = buf, .iov_len = sizeof (buf) } };
+  s = preadv2 (fd, iov, 1, 0, 0);
+
+  pthread_cleanup_pop (0);
+
+  FAIL_EXIT1 ("preadv2 returns with %zd", s);
+}
+
+static void *
 tf_fsync (void *arg)
 {
   if (arg == NULL)
@@ -1473,7 +1542,9 @@  struct cancel_tests tests[] =
   ADD_TEST (recvfrom, 2, 0),
   ADD_TEST (recvmsg, 2, 0),
   ADD_TEST (preadv, 2, 1),
+  ADD_TEST (preadv2, 2, 1),
   ADD_TEST (pwritev, 2, 1),
+  ADD_TEST (pwritev2, 2, 1),
   ADD_TEST (open, 2, 1),
   ADD_TEST (close, 2, 1),
   ADD_TEST (pread, 2, 1),
diff --git a/sysdeps/posix/preadv2.c b/sysdeps/posix/preadv2.c
new file mode 100644
index 0000000..2a7cf11
--- /dev/null
+++ b/sysdeps/posix/preadv2.c
@@ -0,0 +1,38 @@ 
+/* Generic version of preadv2.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.h>
+#include <sys/uio.h>
+
+#ifndef __OFF_T_MATCHES_OFF64_T
+
+/* Since we define no flags for preadv2 just route to preadv.  */
+ssize_t
+preadv2 (int fd, const struct iovec *vector, int count, OFF_T offset,
+	 int flags)
+{
+  if (flags != 0)
+    {
+      __set_errno (EOPNOTSUPP);
+      return -1;
+    }
+
+  return preadv (fd, vector, count, offset);
+}
+
+#endif
diff --git a/sysdeps/posix/preadv64v2.c b/sysdeps/posix/preadv64v2.c
new file mode 100644
index 0000000..e084f3f
--- /dev/null
+++ b/sysdeps/posix/preadv64v2.c
@@ -0,0 +1,37 @@ 
+/* Generic version of preadv2.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.>
+#include <sys/uio.h>
+
+ssize_t
+preadv64v2 (int fd, const struct iovec *vector, int count, OFF_T offset,
+	    int flags)
+{
+  if (flags != 0)
+    {
+      __set_errno (EOPNOTSUPP);
+      return -1;
+    }
+
+  return preadv64 (fd, vector, count, offset);
+}
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+strong_alias (preadv64v2, preadv2)
+#endif
diff --git a/sysdeps/posix/pwritev2.c b/sysdeps/posix/pwritev2.c
new file mode 100644
index 0000000..5b7650c
--- /dev/null
+++ b/sysdeps/posix/pwritev2.c
@@ -0,0 +1,38 @@ 
+/* Generic version of pwritev2.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.h>
+#include <sys/uio.h>
+
+#ifndef __OFF_T_MATCHES_OFF64_T
+
+/* Since we define no flags for pwritev2 just route to pwritev.  */
+ssize_t
+pwritev2 (int fd, const struct iovec *vector, int count, OFF_T offset,
+	  int flags)
+{
+  if (flags != 0)
+    {
+      __set_errno (EOPNOTSUPP);
+      return -1;
+    }
+
+  return pwritev (fd, vector, count, offset);
+}
+
+#endif
diff --git a/sysdeps/posix/pwritev64v2.c b/sysdeps/posix/pwritev64v2.c
new file mode 100644
index 0000000..d9727b9
--- /dev/null
+++ b/sysdeps/posix/pwritev64v2.c
@@ -0,0 +1,38 @@ 
+/* Generic version of pwritev2.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.h>
+#include <sys/uio.h>
+
+/* Since we define no flags for pwritev2 just route to pwritev.  */ 
+ssize_t
+pwritev64v2 (int fd, const struct iovec *vector, int count, OFF_T offset,
+	     int flags)
+{
+  if (flags != 0)
+    {
+      __set_errno (EOPNOTSUPP);
+      return -1;
+    }
+
+  return pwritev64 (fd, vector, count, offset);
+}
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+strong_alias (pwritev64v2, pwritev2)
+#endif
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 58d768c..296f2a5 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2097,3 +2097,8 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 906050d..8006e72 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2008,6 +2008,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist
index 66112dd..29f9688 100644
--- a/sysdeps/unix/sysv/linux/arm/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/libc.abilist
@@ -98,6 +98,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.4 GLIBC_2.4 A
 GLIBC_2.4 _Exit F
 GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
diff --git a/sysdeps/unix/sysv/linux/bits/uio.h b/sysdeps/unix/sysv/linux/bits/uio.h
index 1583f04..d5701f8 100644
--- a/sysdeps/unix/sysv/linux/bits/uio.h
+++ b/sysdeps/unix/sysv/linux/bits/uio.h
@@ -69,4 +69,10 @@  extern ssize_t process_vm_writev (pid_t __pid, const struct iovec *__lvec,
 __END_DECLS
 
 # endif
+
+/* Flags for preadv2/pwritev2: */
+#define RWF_HIPRI	0x00000001 /* High priority request.  */
+#define RWF_DSYNC	0x00000002 /* per-IO O_DSYNC.  */
+#define RWF_SYNC	0x00000004 /* per-IO O_SYNC.  */
+
 #endif
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 3ddadd2..e9cfbaf 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -1862,6 +1862,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 977ab90..c6ad3c3 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2020,6 +2020,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index c7edb9a..d0055a2 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -1884,6 +1884,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index b981466..8ee1af7 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -137,3 +137,8 @@ 
 /* Support for SysV IPC through wired syscalls.  All supported architectures
    either support ipc syscall and/or all the ipc correspondent syscalls.  */
 #define __ASSUME_DIRECT_SYSVIPC_SYSCALLS	1
+
+/* Support for p{read,write}v2 was added in 4.6.  However Linux default
+   implementation does not assume the __ASSUME_* and instead use a fallback
+   implementation based on p{read,write}v and returning an error for
+   non supported flags.  */
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 450be4e..3777676 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -99,6 +99,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.4 GLIBC_2.4 A
 GLIBC_2.4 _Exit F
 GLIBC_2.4 _IO_2_1_stderr_ D 0x98
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 9e016bd..8b1f80c 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -1976,6 +1976,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/microblaze/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/libc.abilist
index 1a455be..d4db9a8 100644
--- a/sysdeps/unix/sysv/linux/microblaze/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/libc.abilist
@@ -2097,3 +2097,8 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index 8eb5e66..f430bdb 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -1951,6 +1951,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 416d9ac..a4dca19 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -1949,6 +1949,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index f4949e5..0814fa8 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -1947,6 +1947,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index c7375ae..a0bdeff 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -1942,6 +1942,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index 724a0e3..b201290 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2138,3 +2138,8 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 2dc32b6..6e7ff24 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -1980,6 +1980,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index 5658109..19c7c7d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -1985,6 +1985,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
index c761221..e94ce38 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
@@ -2185,3 +2185,8 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
index 265c769..f3daa33 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
@@ -99,6 +99,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 _Exit F
 GLIBC_2.3 _IO_2_1_stderr_ D 0xe0
diff --git a/sysdeps/unix/sysv/linux/preadv.c b/sysdeps/unix/sysv/linux/preadv.c
index 7d971cc..ecabc8c 100644
--- a/sysdeps/unix/sysv/linux/preadv.c
+++ b/sysdeps/unix/sysv/linux/preadv.c
@@ -50,4 +50,6 @@  preadv (int fd, const struct iovec *vector, int count, off_t offset)
 #  define OFF_T off_t
 #  include <sysdeps/posix/preadv_common.c>
 # endif /* __ASSUME_PREADV  */
+
+libc_hidden_def (preadv)
 #endif
diff --git a/sysdeps/unix/sysv/linux/preadv2.c b/sysdeps/unix/sysv/linux/preadv2.c
new file mode 100644
index 0000000..11fe85e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/preadv2.c
@@ -0,0 +1,55 @@ 
+/* Linux implementation of preadv2.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/uio.h>
+#include <sysdep-cancel.h>
+
+#ifndef __OFF_T_MATCHES_OFF64_T
+
+# if !defined (__NR_preadv2) && defined (__NR_pread64v2)
+#  define __NR_preadv2 __NR_pread64v2
+# endif
+
+ssize_t
+preadv2 (int fd, const struct iovec *vector, int count, off_t offset,
+	 int flags)
+{
+# ifdef __NR_preadv2
+  ssize_t result = SYSCALL_CANCEL (preadv2, fd, vector, count,
+				   LO_HI_LONG (offset), flags);
+  if (result >= 0 || errno != ENOSYS)
+    return result;
+# endif
+  /* Trying to emulate the preadv2 syscall flags is troublesome:
+
+     * We can not temporary change the file state of the O_DSYNC and O_SYNC
+       flags to emulate RWF_{D}SYNC (attempts to change the state of using
+       fcntl are silently ignored).
+
+     * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
+       semantic not provided by any other flag (O_NONBLOCK for instance).  */
+
+  if (flags != 0)
+    {
+      __set_errno (EOPNOTSUPP);
+      return -1;
+    }
+  return preadv (fd, vector, count, offset);
+}
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/preadv64.c b/sysdeps/unix/sysv/linux/preadv64.c
index 66daa74..c96b214 100644
--- a/sysdeps/unix/sysv/linux/preadv64.c
+++ b/sysdeps/unix/sysv/linux/preadv64.c
@@ -48,7 +48,9 @@  preadv64 (int fd, const struct iovec *vector, int count, off64_t offset)
 # define OFF_T off64_t
 # include <sysdeps/posix/preadv_common.c>
 #endif
+libc_hidden_def (preadv64)
 
 #ifdef __OFF_T_MATCHES_OFF64_T
 strong_alias (preadv64, preadv)
+libc_hidden_def (preadv)
 #endif
diff --git a/sysdeps/unix/sysv/linux/preadv64v2.c b/sysdeps/unix/sysv/linux/preadv64v2.c
new file mode 100644
index 0000000..9d7f8c9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/preadv64v2.c
@@ -0,0 +1,55 @@ 
+/* Linux implementation of preadv2 (LFS version).
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/uio.h>
+#include <sysdep-cancel.h>
+
+#if !defined(__NR_preadv64v2) && defined(__NR_preadv2)
+# define __NR_preadv64v2 __NR_preadv2
+#endif
+
+ssize_t
+preadv64v2 (int fd, const struct iovec *vector, int count, off64_t offset,
+	    int flags)
+{
+#ifdef __NR_preadv64v2
+  ssize_t result = SYSCALL_CANCEL (preadv64v2, fd, vector, count,
+				   LO_HI_LONG (offset), flags);
+  if (result >= 0 || errno != ENOSYS)
+    return result;
+#endif
+  /* Trying to emulate the preadv2 syscall flags is troublesome:
+
+     * We can not temporary change the file state of the O_DSYNC and O_SYNC
+       flags to emulate RWF_{D}SYNC (attempts to change the state of using
+       fcntl are silently ignored).
+
+     * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
+       semantic not provided by any other flag (O_NONBLOCK for instance).  */
+
+  if (flags != 0)
+    {
+      __set_errno (EOPNOTSUPP);
+      return -1;
+    }
+  return preadv64 (fd, vector, count, offset);
+}
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+strong_alias (preadv64v2, preadv2)
+#endif
diff --git a/sysdeps/unix/sysv/linux/pwrite64.c b/sysdeps/unix/sysv/linux/pwrite64.c
index 57e5d20..71959c0 100644
--- a/sysdeps/unix/sysv/linux/pwrite64.c
+++ b/sysdeps/unix/sysv/linux/pwrite64.c
@@ -28,6 +28,7 @@  __libc_pwrite64 (int fd, const void *buf, size_t count, off64_t offset)
 {
   return SYSCALL_CANCEL (pwrite64, fd, buf, count, SYSCALL_LL64_PRW (offset));
 }
+
 weak_alias (__libc_pwrite64, __pwrite64)
 libc_hidden_weak (__pwrite64)
 weak_alias (__libc_pwrite64, pwrite64)
diff --git a/sysdeps/unix/sysv/linux/pwritev.c b/sysdeps/unix/sysv/linux/pwritev.c
index ce02996..7545cb3 100644
--- a/sysdeps/unix/sysv/linux/pwritev.c
+++ b/sysdeps/unix/sysv/linux/pwritev.c
@@ -50,4 +50,6 @@  pwritev (int fd, const struct iovec *vector, int count, off_t offset)
 #  define OFF_T off_t
 #  include <sysdeps/posix/pwritev_common.c>
 # endif /* __ASSUME_PREADV  */
+
+libc_hidden_def (pwritev)
 #endif
diff --git a/sysdeps/unix/sysv/linux/pwritev2.c b/sysdeps/unix/sysv/linux/pwritev2.c
new file mode 100644
index 0000000..72f0471
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/pwritev2.c
@@ -0,0 +1,51 @@ 
+/* Linux implementation of pwritev2.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/uio.h>
+#include <sysdep-cancel.h>
+
+#ifndef __OFF_T_MATCHES_OFF64_T
+
+ssize_t
+pwritev2 (int fd, const struct iovec *vector, int count, off_t offset,
+	  int flags)
+{
+# ifdef __NR_pwritev2
+  ssize_t result = SYSCALL_CANCEL (pwritev2, fd, vector, count,
+				   LO_HI_LONG (offset), flags);
+  if (result >= 0 || errno != ENOSYS)
+    return result;
+# endif
+  /* Trying to emulate the pwritev2 syscall flags is troublesome:
+
+     * We can not temporary change the file state of the O_DSYNC and O_SYNC
+       flags to emulate RWF_{D}SYNC (attempts to change the state of using
+       fcntl are silently ignored).
+
+     * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
+       semantic not provided by any other flag (O_NONBLOCK for instance).  */
+
+  if (flags != 0)
+    {
+      __set_errno (EOPNOTSUPP);
+      return -1;
+    }
+  return pwritev (fd, vector, count, offset);
+}
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/pwritev64.c b/sysdeps/unix/sysv/linux/pwritev64.c
index 45fb90b..9dc4e55 100644
--- a/sysdeps/unix/sysv/linux/pwritev64.c
+++ b/sysdeps/unix/sysv/linux/pwritev64.c
@@ -48,7 +48,9 @@  pwritev64 (int fd, const struct iovec *vector, int count, off64_t offset)
 # define OFF_T off64_t
 # include <sysdeps/posix/pwritev_common.c>
 #endif
+libc_hidden_def (pwritev64)
 
 #ifdef __OFF_T_MATCHES_OFF64_T
 strong_alias (pwritev64, pwritev)
+libc_hidden_def (pwritev)
 #endif
diff --git a/sysdeps/unix/sysv/linux/pwritev64v2.c b/sysdeps/unix/sysv/linux/pwritev64v2.c
new file mode 100644
index 0000000..def9a0b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/pwritev64v2.c
@@ -0,0 +1,55 @@ 
+/* Linux implementation of pwritev2 (LFS version).
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/uio.h>
+#include <sysdep-cancel.h>
+
+#if !defined(__NR_pwritev64v2) && defined(__NR_pwritev2)
+# define __NR_pwritev64v2 __NR_pwritev2
+#endif
+
+ssize_t
+pwritev64v2 (int fd, const struct iovec *vector, int count, off64_t offset,
+	     int flags)
+{
+#ifdef __NR_pwritev64v2
+  ssize_t result = SYSCALL_CANCEL (pwritev64v2, fd, vector, count,
+				   LO_HI_LONG (offset), flags);
+  if (result >= 0 || errno != ENOSYS)
+    return result;
+#endif
+  /* Trying to emulate the pwritev2 syscall flags is troublesome:
+
+     * We can not temporary change the file state of the O_DSYNC and O_SYNC
+       flags to emulate RWF_{D}SYNC (attempts to change the state of using
+       fcntl are silently ignored).
+
+     * IOCB_HIPRI requires the file opened in O_DIRECT and uses an internal
+       semantic not provided by any other flag (O_NONBLOCK for instance).  */
+
+  if (flags != 0)
+    {
+      __set_errno (EOPNOTSUPP);
+      return -1;
+    }
+  return pwritev64 (fd, vector, count, offset);
+}
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+strong_alias (pwritev64v2, pwritev2)
+#endif
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index ed1b6bf..eb9e72f 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -1980,6 +1980,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 2e75d29..1402959 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -1881,6 +1881,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/sh/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist
index bd74c0c..e9eefcb 100644
--- a/sysdeps/unix/sysv/linux/sh/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/libc.abilist
@@ -1866,6 +1866,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index 5584838..967699e 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -1972,6 +1972,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index efedbe2..9dd938a 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -1910,6 +1910,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
index ffd988a..68c9887 100644
--- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
@@ -2104,3 +2104,8 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
index f0c13ce..97aa0f7 100644
--- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
@@ -2104,3 +2104,8 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
diff --git a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
index ffd988a..68c9887 100644
--- a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
@@ -2104,3 +2104,8 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index f57004c..2032659 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -1861,6 +1861,11 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 05629e1..11a278c 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2104,3 +2104,8 @@  GLIBC_2.25 getrandom F
 GLIBC_2.25 strfromd F
 GLIBC_2.25 strfromf F
 GLIBC_2.25 strfroml F
+GLIBC_2.26 GLIBC_2.26 A
+GLIBC_2.26 preadv2 F
+GLIBC_2.26 preadv64v2 F
+GLIBC_2.26 pwritev2 F
+GLIBC_2.26 pwritev64v2 F