Main

################################################################################

# External projects

################################################################################

INCLUDE(ExternalProject)

INCLUDE(cmake/liburing.cmake)

SET(READTEST_EXTERNAL_LIBS ${READTEST_EXTERNAL_LIBS} ${liburing_static_lib})

#INCLUDE_DIRECTORIES(/home/dsorber/Documents/dev/liburing/src/include)

${CMAKE_CURRENT_SOURCE_DIR}/src/Logger/Logger.cc

ADD_DEPENDENCIES(read_test liburing_local)

#

# hwloc: https://github.com/axboe/liburing

#

SET(LIBURING_PREFIX ${CMAKE_BINARY_DIR}/liburing)

# BIG NOTE: the "EXTERNAL_SOURCE_DIR" variable is used below to point to

# the "external" directory. It must be set appropriately before this cmake file

# is included or it will default to CMAKE_SOURCE_DIR.

IF(NOT DEFINED EXTERNAL_SOURCE_DIR)

SET(EXTERNAL_SOURCE_DIR ${CMAKE_SOURCE_DIR})

ENDIF()

IF(NOT DEFINED COMPILE_FLAGS)

SET(COMPILE_FLAGS "-O3 -flto -march=haswell -mtune=generic")

MESSAGE(STATUS "SETTING COMPILE_FLAGS")

ENDIF()

# Get number of for use in the BUILD_COMMAND below

INCLUDE(ProcessorCount)

ProcessorCount(N)

SET(liburing_static_lib ${LIBURING_PREFIX}/lib/liburing.a)

ExternalProject_Add(liburing_local

PREFIX ${LIBURING_PREFIX}

DOWNLOAD_COMMAND "" # fake this out since we already have the source

SOURCE_DIR ${EXTERNAL_SOURCE_DIR}/external/liburing

BINARY_DIR ${LIBURING_PREFIX}/src/liburing-build

INSTALL_DIR ${LIBURING_PREFIX}

# Bit of a hack... copy source into the build directory and build there

# since autotools does not support out of tree builds. Also compile the

# static lib with -fPIC so it can be linked in the shared objects.

#CONFIGURE_COMMAND sh -c "rsync -r ${EXTERNAL_SOURCE_DIR}/external/liburing/ ${LIBURING_PREFIX}/src/liburing-build && cd ${LIBURING_PREFIX}/src/liburing-build && autoreconf -f -i && AR=gcc-ar RANLIB=gcc-ranlib CFLAGS=\"-fPIC ${COMPILE_FLAGS}\" CXXFLAGS=\"-fPIC ${COMPILE_FLAGS}\" ${LIBURING_PREFIX}/src/hwloc-build/configure --with-pic --prefix=${LIBURING_PREFIX} --enable-shared=no --enable-static=yes --disable-opencl --disable-libxml2 --disable-cairo --disable-io"

CONFIGURE_COMMAND sh -c "rsync -r ${EXTERNAL_SOURCE_DIR}/external/liburing/ ${LIBURING_PREFIX}/src/liburing-build && cd ${LIBURING_PREFIX}/src/liburing-build && ${LIBURING_PREFIX}/src/liburing-build/configure --prefix=${LIBURING_PREFIX} "

BUILD_COMMAND make -j${N}

INSTALL_COMMAND make install # install to directory ${CMAKE_BINARY_DIR}

BUILD_BYPRODUCTS ${liburing_static_lib}

)

INCLUDE_DIRECTORIES(${LIBURING_PREFIX}/src/liburing-build/include)

SET_SOURCE_FILES_PROPERTIES(

${liburing_static_lib} PROPERTIES

EXTERNAL_OBJECT TRUE # Identifies this as an object file (static lib)

GENERATED TRUE # Avoids need for file to exist at configure-time

)

<!-- Explain your changes here... -->

----

## git request-pull output:

```

<!-- START REPLACE ME -->

Generate your PR shortlog and diffstat with these commands:

git remote add axboe-tree https://github.com/axboe/liburing

git fetch axboe-tree

git request-pull axboe-tree/master your_fork_URL your_branch_name

Then replace this with the output of `git request-pull` command.

<!-- END REPLACE ME -->

```

----

<details>

<summary>Click to show/hide pull request guidelines</summary>

## Pull Request Guidelines

1. To make everyone easily filter pull request from the email

notification, use `[GIT PULL]` as a prefix in your PR title.

```

[GIT PULL] Your Pull Request Title

```

2. Follow the commit message format rules below.

3. Follow the Linux kernel coding style (see: https://github.com/torvalds/linux/blob/master/Documentation/process/coding-style.rst).

### Commit message format rules:

1. The first line is title (don't be more than 72 chars if possible).

2. Then an empty line.

3. Then a description (may be omitted for truly trivial changes).

4. Then an empty line again (if it has a description).

5. Then a `Signed-off-by` tag with your real name and email. For example:

```

Signed-off-by: Foo Bar <foo.bar@gmail.com>

```

The description should be word-wrapped at 72 chars. Some things should

not be word-wrapped. They may be some kind of quoted text - long

compiler error messages, oops reports, Link, etc. (things that have a

certain specific format).

Note that all of this goes in the commit message, not in the pull

request text. The pull request text should introduce what this pull

request does, and each commit message should explain the rationale for

why that particular change was made. The git tree is canonical source

of truth, not github.

Each patch should do one thing, and one thing only. If you find yourself

writing an explanation for why a patch is fixing multiple issues, that's

a good indication that the change should be split into separate patches.

If the commit is a fix for an issue, add a `Fixes` tag with the issue

URL.

Don't use GitHub anonymous email like this as the commit author:

```

123456789+username@users.noreply.github.com

```

Use a real email address!

### Commit message example:

```

src/queue: don't flush SQ ring for new wait interface

If we have IORING_FEAT_EXT_ARG, then timeouts are done through the

syscall instead of by posting an internal timeout. This was done

to be both more efficient, but also to enable multi-threaded use

the wait side. If we touch the SQ state by flushing it, that isn't

safe without synchronization.

Fixes: https://github.com/axboe/liburing/issues/402

Signed-off-by: Jens Axboe <axboe@kernel.dk>

```

</details>

----

## By submitting this pull request, I acknowledge that:

1. I have followed the above pull request guidelines.

2. I have the rights to submit this work under the same license.

3. I agree to a Developer Certificate of Origin (see https://developercertificate.org for more information).

name: Build test

on:

# Trigger the workflow on push or pull requests.

push:

pull_request:

jobs:

build:

runs-on: ubuntu-22.04

strategy:

fail-fast: false

matrix:

include:

# x86-64 gcc

- arch: x86_64

cc_pkg: gcc-x86-64-linux-gnu

cxx_pkg: g++-x86-64-linux-gnu

cc: x86_64-linux-gnu-gcc

cxx: x86_64-linux-gnu-g++

# x86-64 clang

- arch: x86_64

cc_pkg: clang

cxx_pkg: clang

cc: clang

cxx: clang++

liburing_extra_flags: -Wshorten-64-to-32

extra_flags: -Wmissing-prototypes -Wstrict-prototypes -Wunreachable-code-loop-increment -Wunreachable-code -Wmissing-variable-declarations -Wextra-semi-stmt

# x86 (32-bit) gcc

- arch: i686

cc_pkg: gcc-i686-linux-gnu

cxx_pkg: g++-i686-linux-gnu

cc: i686-linux-gnu-gcc

cxx: i686-linux-gnu-g++

# aarch64 gcc

- arch: aarch64

cc_pkg: gcc-aarch64-linux-gnu

cxx_pkg: g++-aarch64-linux-gnu

cc: aarch64-linux-gnu-gcc

cxx: aarch64-linux-gnu-g++

# arm (32-bit) gcc

- arch: arm

cc_pkg: gcc-arm-linux-gnueabi

cxx_pkg: g++-arm-linux-gnueabi

cc: arm-linux-gnueabi-gcc

cxx: arm-linux-gnueabi-g++

# powerpc64

- arch: powerpc64

cc_pkg: gcc-powerpc64-linux-gnu

cxx_pkg: g++-powerpc64-linux-gnu

cc: powerpc64-linux-gnu-gcc

cxx: powerpc64-linux-gnu-g++

# powerpc

- arch: powerpc

cc_pkg: gcc-powerpc-linux-gnu

cxx_pkg: g++-powerpc-linux-gnu

cc: powerpc-linux-gnu-gcc

cxx: powerpc-linux-gnu-g++

# alpha

- arch: alpha

cc_pkg: gcc-alpha-linux-gnu

cxx_pkg: g++-alpha-linux-gnu

cc: alpha-linux-gnu-gcc

cxx: alpha-linux-gnu-g++

# mips64

- arch: mips64

cc_pkg: gcc-mips64-linux-gnuabi64

cxx_pkg: g++-mips64-linux-gnuabi64

cc: mips64-linux-gnuabi64-gcc

cxx: mips64-linux-gnuabi64-g++

# mips

- arch: mips

cc_pkg: gcc-mips-linux-gnu

cxx_pkg: g++-mips-linux-gnu

cc: mips-linux-gnu-gcc

cxx: mips-linux-gnu-g++

# hppa

- arch: hppa

cc_pkg: gcc-hppa-linux-gnu

cxx_pkg: g++-hppa-linux-gnu

cc: hppa-linux-gnu-gcc

cxx: hppa-linux-gnu-g++

env:

FLAGS: -g -O3 -Wall -Wextra -Werror -Wno-sign-compare ${{matrix.extra_flags}}

# Flags for building sources in src/ dir only.

LIBURING_CFLAGS: ${{matrix.liburing_extra_flags}}

steps:

- name: Checkout source

uses: actions/checkout@v2

- name: Install Compilers

run: |

if [[ "${{matrix.cc_pkg}}" == "clang" ]]; then \

wget https://apt.llvm.org/llvm.sh -O /tmp/llvm.sh; \

sudo bash /tmp/llvm.sh 17; \

sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-17 400; \

sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-17 400; \

else \

sudo apt-get update -y; \

sudo apt-get install -y ${{matrix.cc_pkg}} ${{matrix.cxx_pkg}}; \

fi;

- name: Display compiler versions

run: |

${{matrix.cc}} --version;

${{matrix.cxx}} --version;

- name: Build

run: |

./configure --cc=${{matrix.cc}} --cxx=${{matrix.cxx}};

make -j$(nproc) V=1 CPPFLAGS="-Werror" CFLAGS="$FLAGS" CXXFLAGS="$FLAGS";

- name: Test install command

run: |

sudo make install;

name: Shellcheck

on:

# Trigger the workflow on push or pull requests.

push:

pull_request:

jobs:

test:

runs-on: ubuntu-22.04

steps:

- name: Checkout source

uses: actions/checkout@v2

- name: Display shellcheck version

run: shellcheck --version

- name: Shellcheck execution

run: shellcheck test/runtest*.sh

*.rej

*.orig

*~

/*.patch

*.d

*.o

*.o[ls]

/src/liburing.a

/src/liburing.so*

/src/liburing-ffi.a

/src/liburing-ffi.so*

/src/include/liburing/compat.h

/src/include/liburing/io_uring_version.h

/examples/io_uring-close-test

/examples/io_uring-cp

/examples/io_uring-test

/examples/io_uring-udp

/examples/link-cp

/examples/ucontext-cp

/examples/poll-bench

/examples/send-zerocopy

/examples/rsrc-update-bench

/test/*.t

/test/*.dmesg

/test/output/

config-host.h

config-host.mak

config.log

liburing.pc

liburing-ffi.pc

cscope.out

liburing-2.4 release

- Add io_uring_{major,minor,check}_version() functions.

- Add IO_URING_{MAJOR,MINOR,CHECK}_VERSION() macros.

- FFI support (for non-C/C++ languages integration).

- Add io_uring_prep_msg_ring_cqe_flags() function.

- Deprecate --nolibc configure option.

- CONFIG_NOLIBC is always enabled on x86-64, x86, and aarch64.

- Add support for IORING_REGISTER_USE_REGISTERED_RING and use if available.

- Add io_uring_close_ring_fd() function.

- Add io_uring_prep_msg_ring_fd_alloc function.

- Add io_uring_free_buf_ring() and io_uring_setup_buf_ring() functions.

- Ensure that io_uring_prep_accept_direct(), io_uring_prep_openat_direct(),

io_uring_prep_openat2_direct(), io_uring_prep_msg_ring_fd(), and

io_uring_prep_socket_direct() factor in being called with

IORING_FILE_INDEX_ALLOC for allocating a direct descriptor.

- Add io_uring_prep_sendto() function.

liburing-2.3 release

- Support non-libc build for aarch64.

- Add io_uring_{enter,enter2,register,setup} syscall functions.

- Add sync cancel interface, io_uring_register_sync_cancel().

- Fix return value of io_uring_submit_and_wait_timeout() to match the

man page.

- Improvements to the regression tests

- Add support and test case for passthrough IO

- Add recv and recvmsg multishot helpers and support

- Add documentation and support for IORING_SETUP_DEFER_TASKRUN

- Fix potential missing kernel entry with IORING_SETUP_IOPOLL

- Add support and documentation for zero-copy network transmit

- Various optimizations

- Many cleanups

- Many man page additions and updates

liburing-2.2 release

- Support non-libc builds.

- Optimized syscall handling for x86-64/x86/aarch64.

- Enable non-lib function calls for fast path functions.

- Add support for multishot accept.

- io_uring_register_files() will set RLIMIT_NOFILE if necessary.

- Add support for registered ring fds, io_uring_register_ring_fd(),

reducing the overhead of an io_uring_enter() system call.

- Add support for the message ring opcode.

- Add support for newer request cancelation features.

- Add support for IORING_SETUP_COOP_TASKRUN, which can help reduce the

overhead of io_uring in general. Most applications should set this flag,

see the io_uring_setup.2 man page for details.

- Add support for registering a sparse buffer and file set.

- Add support for a new buffer provide scheme, see

io_uring_register_buf_ring.3 for details.

- Add io_uring_submit_and_wait_timeout() for submitting IO and waiting

for completions with a timeout.

- Add io_uring_prep_{read,write}v2 prep helpers.

- Add io_uring_prep_close_direct() helper.

- Add support for SQE128 and CQE32, which are doubly sized SQE and CQE

rings. This is needed for some cases of the new IORING_OP_URING_CMD,

notably for NVMe passthrough.

- ~5500 lines of man page additions, including adding ~90 new man pages.

- Synced with the 5.19 kernel release, supporting all the features of

5.19 and earlier.

- 24 new regression test cases, and ~7000 lines of new tests in general.

- General optimizations and fixes.

cff-version: 1.2.0

preferred-citation:

type: software

authors:

- family-names: "Axboe"

given-names: "Jens"

email: axboe@kernel.dk

title: "liburing library for io_uring"

year: 2022

url: "https://github.com/axboe/liburing"

licence: MIT

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Version 2.1, February 1999

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the user installs one, as long as the modified version is

interface-compatible with the version that the work was made with.

c) Accompany the work with a written offer, valid for at

least three years, to give the same user the materials

specified in Subsection 6a, above, for a charge no more

than the cost of performing this distribution.

d) If distribution of the work is made by offering access to copy

from a designated place, offer equivalent access to copy the above

specified materials from the same place.

e) Verify that the user has already received a copy of these

materials or that you have already sent this user a copy.

For an executable, the required form of the "work that uses the

Library" must include any data and utility programs needed for

reproducing the executable from it. However, as a special exception,

the materials to be distributed need not include anything that is

normally distributed (in either source or binary form) with the major

components (compiler, kernel, and so on) of the operating system on

which the executable runs, unless that component itself accompanies

the executable.

It may happen that this requirement contradicts the license

restrictions of other proprietary libraries that do not normally

accompany the operating system. Such a contradiction means you cannot

use both them and the Library together in an executable that you

distribute.

7. You may place library facilities that are a work based on the

Library side-by-side in a single library together with other library

facilities not covered by this License, and distribute such a combined

library, provided that the separate distribution of the work based on

the Library and of the other library facilities is otherwise

permitted, and provided that you do these two things:

a) Accompany the combined library with a copy of the same work

based on the Library, uncombined with any other library

facilities. This must be distributed under the terms of the

Sections above.

b) Give prominent notice with the combined library of the fact

that part of it is a work based on the Library, and explaining

where to find the accompanying uncombined form of the same work.

8. You may not copy, modify, sublicense, link with, or distribute

the Library except as expressly provided under this License. Any

attempt otherwise to copy, modify, sublicense, link with, or

distribute the Library is void, and will automatically terminate your

rights under this License. However, parties who have received copies,

or rights, from you under this License will not have their licenses

terminated so long as such parties remain in full compliance.

9. You are not required to accept this License, since you have not

signed it. However, nothing else grants you permission to modify or

distribute the Library or its derivative works. These actions are

prohibited by law if you do not accept this License. Therefore, by

modifying or distributing the Library (or any work based on the

Library), you indicate your acceptance of this License to do so, and

all its terms and conditions for copying, distributing or modifying

the Library or works based on it.

10. Each time you redistribute the Library (or any work based on the

Library), the recipient automatically receives a license from the

original licensor to copy, distribute, link with or modify the Library

subject to these terms and conditions. You may not impose any further

restrictions on the recipients' exercise of the rights granted herein.

You are not responsible for enforcing compliance by third parties with

this License.

11. If, as a consequence of a court judgment or allegation of patent

infringement or for any other reason (not limited to patent issues),

conditions are imposed on you (whether by court order, agreement or

otherwise) that contradict the conditions of this License, they do not

excuse you from the conditions of this License. If you cannot

distribute so as to satisfy simultaneously your obligations under this

License and any other pertinent obligations, then as a consequence you

may not distribute the Library at all. For example, if a patent

license would not permit royalty-free redistribution of the Library by

all those who receive copies directly or indirectly through you, then

the only way you could satisfy both it and this License would be to

refrain entirely from distribution of the Library.

If any portion of this section is held invalid or unenforceable under any

particular circumstance, the balance of the section is intended to apply,

and the section as a whole is intended to apply in other circumstances.

It is not the purpose of this section to induce you to infringe any

patents or other property right claims or to contest validity of any

such claims; this section has the sole purpose of protecting the

integrity of the free software distribution system which is

implemented by public license practices. Many people have made

generous contributions to the wide range of software distributed

through that system in reliance on consistent application of that

system; it is up to the author/donor to decide if he or she is willing

to distribute software through any other system and a licensee cannot

impose that choice.

This section is intended to make thoroughly clear what is believed to

be a consequence of the rest of this License.

12. If the distribution and/or use of the Library is restricted in

certain countries either by patents or by copyrighted interfaces, the

original copyright holder who places the Library under this License may add

an explicit geographical distribution limitation excluding those countries,

so that distribution is permitted only in or among countries not thus

excluded. In such case, this License incorporates the limitation as if

written in the body of this License.

13. The Free Software Foundation may publish revised and/or new

versions of the Lesser General Public License from time to time.

Such new versions will be similar in spirit to the present version,

but may differ in detail to address new problems or concerns.

Each version is given a distinguishing version number. If the Library

specifies a version number of this License which applies to it and

"any later version", you have the option of following the terms and

conditions either of that version or of any later version published by

the Free Software Foundation. If the Library does not specify a

license version number, you may choose any version ever published by

the Free Software Foundation.

14. If you wish to incorporate parts of the Library into other free

programs whose distribution conditions are incompatible with these,

write to the author to ask for permission. For software which is

copyrighted by the Free Software Foundation, write to the Free

Software Foundation; we sometimes make exceptions for this. Our

decision will be guided by the two goals of preserving the free status

of all derivatives of our free software and of promoting the sharing

and reuse of software generally.

NO WARRANTY

15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO

WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.

EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR

OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY

KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE

LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME

THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN

WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY

AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU

FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR

CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE

LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING

RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A

FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF

SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH

DAMAGES.

END OF TERMS AND CONDITIONS

How to Apply These Terms to Your New Libraries

If you develop a new library, and you want it to be of the greatest

possible use to the public, we recommend making it free software that

everyone can redistribute and change. You can do so by permitting

redistribution under these terms (or, alternatively, under the terms of the

ordinary General Public License).

To apply these terms, attach the following notices to the library. It is

safest to attach them to the start of each source file to most effectively

convey the exclusion of warranty; and each file should have at least the

"copyright" line and a pointer to where the full notice is found.

<one line to give the library's name and a brief idea of what it does.>

Copyright (C) <year> <name of author>

This 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.

This 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 this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Also add information on how to contact you by electronic and paper mail.

You should also get your employer (if you work as a programmer) or your

school, if any, to sign a "copyright disclaimer" for the library, if

necessary. Here is a sample; alter the names:

Yoyodyne, Inc., hereby disclaims all copyright interest in the

library `Frob' (a library for tweaking knobs) written by James Random Hacker.

<signature of Ty Coon>, 1 April 1990

Ty Coon, President of Vice

That's all there is to it!

GNU GENERAL PUBLIC LICENSE

Version 2, June 1991

Copyright (C) 1989, 1991 Free Software Foundation, Inc.,

51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Everyone is permitted to copy and distribute verbatim copies

of this license document, but changing it is not allowed.

Preamble

The licenses for most software are designed to take away your

freedom to share and change it. By contrast, the GNU General Public

License is intended to guarantee your freedom to share and change free

software--to make sure the software is free for all its users. This

General Public License applies to most of the Free Software

Foundation's software and to any other program whose authors commit to

using it. (Some other Free Software Foundation software is covered by

the GNU Lesser General Public License instead.) You can apply it to

your programs, too.

When we speak of free software, we are referring to freedom, not

price. Our General Public Licenses are designed to make sure that you

have the freedom to distribute copies of free software (and charge for

this service if you wish), that you receive source code or can get it

if you want it, that you can change the software or use pieces of it

in new free programs; and that you know you can do these things.

To protect your rights, we need to make restrictions that forbid

anyone to deny you these rights or to ask you to surrender the rights.

These restrictions translate to certain responsibilities for you if you

distribute copies of the software, or if you modify it.

For example, if you distribute copies of such a program, whether

gratis or for a fee, you must give the recipients all the rights that

you have. You must make sure that they, too, receive or can get the

source code. And you must show them these terms so they know their

rights.

We protect your rights with two steps: (1) copyright the software, and

(2) offer you this license which gives you legal permission to copy,

distribute and/or modify the software.

Also, for each author's protection and ours, we want to make certain

that everyone understands that there is no warranty for this free

software. If the software is modified by someone else and passed on, we

want its recipients to know that what they have is not the original, so

that any problems introduced by others will not reflect on the original

authors' reputations.

Finally, any free program is threatened constantly by software

patents. We wish to avoid the danger that redistributors of a free

program will individually obtain patent licenses, in effect making the

program proprietary. To prevent this, we have made it clear that any

patent must be licensed for everyone's free use or not licensed at all.

The precise terms and conditions for copying, distribution and

modification follow.

GNU GENERAL PUBLIC LICENSE

TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0. This License applies to any program or other work which contains

a notice placed by the copyright holder saying it may be distributed

under the terms of this General Public License. The "Program", below,

refers to any such program or work, and a "work based on the Program"

means either the Program or any derivative work under copyright law:

that is to say, a work containing the Program or a portion of it,

either verbatim or with modifications and/or translated into another

language. (Hereinafter, translation is included without limitation in

the term "modification".) Each licensee is addressed as "you".

Activities other than copying, distribution and modification are not

covered by this License; they are outside its scope. The act of

running the Program is not restricted, and the output from the Program

is covered only if its contents constitute a work based on the

Program (independent of having been made by running the Program).

Whether that is true depends on what the Program does.

1. You may copy and distribute verbatim copies of the Program's

source code as you receive it, in any medium, provided that you

conspicuously and appropriately publish on each copy an appropriate

copyright notice and disclaimer of warranty; keep intact all the

notices that refer to this License and to the absence of any warranty;

and give any other recipients of the Program a copy of this License

along with the Program.

You may charge a fee for the physical act of transferring a copy, and

you may at your option offer warranty protection in exchange for a fee.

2. You may modify your copy or copies of the Program or any portion

of it, thus forming a work based on the Program, and copy and

distribute such modifications or work under the terms of Section 1

above, provided that you also meet all of these conditions:

a) You must cause the modified files to carry prominent notices

stating that you changed the files and the date of any change.

b) You must cause any work that you distribute or publish, that in

whole or in part contains or is derived from the Program or any

part thereof, to be licensed as a whole at no charge to all third

parties under the terms of this License.

c) If the modified program normally reads commands interactively

when run, you must cause it, when started running for such

interactive use in the most ordinary way, to print or display an

announcement including an appropriate copyright notice and a

notice that there is no warranty (or else, saying that you provide

a warranty) and that users may redistribute the program under

these conditions, and telling the user how to view a copy of this

License. (Exception: if the Program itself is interactive but

does not normally print such an announcement, your work based on

the Program is not required to print an announcement.)

These requirements apply to the modified work as a whole. If

identifiable sections of that work are not derived from the Program,

and can be reasonably considered independent and separate works in

themselves, then this License, and its terms, do not apply to those

sections when you distribute them as separate works. But when you

distribute the same sections as part of a whole which is a work based

on the Program, the distribution of the whole must be on the terms of

this License, whose permissions for other licensees extend to the

entire whole, and thus to each and every part regardless of who wrote it.

Thus, it is not the intent of this section to claim rights or contest

your rights to work written entirely by you; rather, the intent is to

exercise the right to control the distribution of derivative or

collective works based on the Program.

In addition, mere aggregation of another work not based on the Program

with the Program (or with a work based on the Program) on a volume of

a storage or distribution medium does not bring the other work under

the scope of this License.

3. You may copy and distribute the Program (or a work based on it,

under Section 2) in object code or executable form under the terms of

Sections 1 and 2 above provided that you also do one of the following:

a) Accompany it with the complete corresponding machine-readable

source code, which must be distributed under the terms of Sections

1 and 2 above on a medium customarily used for software interchange; or,

b) Accompany it with a written offer, valid for at least three

years, to give any third party, for a charge no more than your

cost of physically performing source distribution, a complete

machine-readable copy of the corresponding source code, to be

distributed under the terms of Sections 1 and 2 above on a medium

customarily used for software interchange; or,

c) Accompany it with the information you received as to the offer

to distribute corresponding source code. (This alternative is

allowed only for noncommercial distribution and only if you

received the program in object code or executable form with such

an offer, in accord with Subsection b above.)

The source code for a work means the preferred form of the work for

making modifications to it. For an executable work, complete source

code means all the source code for all modules it contains, plus any

associated interface definition files, plus the scripts used to

control compilation and installation of the executable. However, as a

special exception, the source code distributed need not include

anything that is normally distributed (in either source or binary

form) with the major components (compiler, kernel, and so on) of the

operating system on which the executable runs, unless that component

itself accompanies the executable.

If distribution of executable or object code is made by offering

access to copy from a designated place, then offering equivalent

access to copy the source code from the same place counts as

distribution of the source code, even though third parties are not

compelled to copy the source along with the object code.

4. You may not copy, modify, sublicense, or distribute the Program

except as expressly provided under this License. Any attempt

otherwise to copy, modify, sublicense or distribute the Program is

void, and will automatically terminate your rights under this License.

However, parties who have received copies, or rights, from you under

this License will not have their licenses terminated so long as such

parties remain in full compliance.

5. You are not required to accept this License, since you have not

signed it. However, nothing else grants you permission to modify or

distribute the Program or its derivative works. These actions are

prohibited by law if you do not accept this License. Therefore, by

modifying or distributing the Program (or any work based on the

Program), you indicate your acceptance of this License to do so, and

all its terms and conditions for copying, distributing or modifying

the Program or works based on it.

6. Each time you redistribute the Program (or any work based on the

Program), the recipient automatically receives a license from the

original licensor to copy, distribute or modify the Program subject to

these terms and conditions. You may not impose any further

restrictions on the recipients' exercise of the rights granted herein.

You are not responsible for enforcing compliance by third parties to

this License.

7. If, as a consequence of a court judgment or allegation of patent

infringement or for any other reason (not limited to patent issues),

conditions are imposed on you (whether by court order, agreement or

otherwise) that contradict the conditions of this License, they do not

excuse you from the conditions of this License. If you cannot

distribute so as to satisfy simultaneously your obligations under this

License and any other pertinent obligations, then as a consequence you

may not distribute the Program at all. For example, if a patent

license would not permit royalty-free redistribution of the Program by

all those who receive copies directly or indirectly through you, then

the only way you could satisfy both it and this License would be to

refrain entirely from distribution of the Program.

If any portion of this section is held invalid or unenforceable under

any particular circumstance, the balance of the section is intended to

apply and the section as a whole is intended to apply in other

circumstances.

It is not the purpose of this section to induce you to infringe any

patents or other property right claims or to contest validity of any

such claims; this section has the sole purpose of protecting the

integrity of the free software distribution system, which is

implemented by public license practices. Many people have made

generous contributions to the wide range of software distributed

through that system in reliance on consistent application of that

system; it is up to the author/donor to decide if he or she is willing

to distribute software through any other system and a licensee cannot

impose that choice.

This section is intended to make thoroughly clear what is believed to

be a consequence of the rest of this License.

8. If the distribution and/or use of the Program is restricted in

certain countries either by patents or by copyrighted interfaces, the

original copyright holder who places the Program under this License

may add an explicit geographical distribution limitation excluding

those countries, so that distribution is permitted only in or among

countries not thus excluded. In such case, this License incorporates

the limitation as if written in the body of this License.

9. The Free Software Foundation may publish revised and/or new versions

of the General Public License from time to time. Such new versions will

be similar in spirit to the present version, but may differ in detail to

address new problems or concerns.

Each version is given a distinguishing version number. If the Program

specifies a version number of this License which applies to it and "any

later version", you have the option of following the terms and conditions

either of that version or of any later version published by the Free

Software Foundation. If the Program does not specify a version number of

this License, you may choose any version ever published by the Free Software

Foundation.

10. If you wish to incorporate parts of the Program into other free

programs whose distribution conditions are different, write to the author

to ask for permission. For software which is copyrighted by the Free

Software Foundation, write to the Free Software Foundation; we sometimes

make exceptions for this. Our decision will be guided by the two goals

of preserving the free status of all derivatives of our free software and

of promoting the sharing and reuse of software generally.

NO WARRANTY

11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY

FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN

OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES

PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED

OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS

TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE

PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,

REPAIR OR CORRECTION.

12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING

WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR

REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,

INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING

OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED

TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY

YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER

PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE

POSSIBILITY OF SUCH DAMAGES.

END OF TERMS AND CONDITIONS

How to Apply These Terms to Your New Programs

If you develop a new program, and you want it to be of the greatest

possible use to the public, the best way to achieve this is to make it

free software which everyone can redistribute and change under these terms.

To do so, attach the following notices to the program. It is safest

to attach them to the start of each source file to most effectively

convey the exclusion of warranty; and each file should have at least

the "copyright" line and a pointer to where the full notice is found.

<one line to give the program's name and a brief idea of what it does.>

Copyright (C) <year> <name of author>

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License along

with this program; if not, write to the Free Software Foundation, Inc.,

51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this

when it starts in an interactive mode:

Gnomovision version 69, Copyright (C) year name of author

Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.

This is free software, and you are welcome to redistribute it

under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate

parts of the General Public License. Of course, the commands you use may

be called something other than `show w' and `show c'; they could even be

mouse-clicks or menu items--whatever suits your program.

You should also get your employer (if you work as a programmer) or your

school, if any, to sign a "copyright disclaimer" for the program, if

necessary. Here is a sample; alter the names:

Yoyodyne, Inc., hereby disclaims all copyright interest in the program

`Gnomovision' (which makes passes at compilers) written by James Hacker.

<signature of Ty Coon>, 1 April 1989

Ty Coon, President of Vice

This General Public License does not permit incorporating your program into

proprietary programs. If your program is a subroutine library, you may

consider it more useful to permit linking proprietary applications with the

library. If this is what you want to do, use the GNU Lesser General

Public License instead of this License.

Copyright 2020 Jens Axboe

Permission is hereby granted, free of charge, to any person obtaining a

copy of this software and associated documentation files (the

"Software"), to deal in the Software without restriction, including

without limitation the rights to use, copy, modify, merge, publish,

distribute, sublicense, and/or sell copies of the Software, and to

permit persons to whom the Software is furnished to do so, subject to

the following conditions:

The above copyright notice and this permission notice shall be included

in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

include Makefile.common

RPMBUILD=$(shell `which rpmbuild >&/dev/null` && echo "rpmbuild" || echo "rpm")

INSTALL=install

default: all

all:

@$(MAKE) -C src

@$(MAKE) -C test

@$(MAKE) -C examples

.PHONY: all install default clean test

.PHONY: FORCE cscope

partcheck: all

@echo "make partcheck => TODO add tests with out kernel support"

runtests: all

@$(MAKE) -C test runtests

runtests-loop: all

@$(MAKE) -C test runtests-loop

runtests-parallel: all

@$(MAKE) -C test runtests-parallel

config-host.mak: configure

+@if [ ! -e "$@" ]; then \

echo "Running configure ..."; \

./configure; \

else \

echo "$@ is out-of-date, running configure"; \

sed -n "/.*Configured with/s/[^:]*: //p" "$@" | sh; \

fi

ifneq ($(MAKECMDGOALS),clean)

include config-host.mak

endif

%.pc: %.pc.in config-host.mak $(SPECFILE)

sed -e "s%@prefix@%$(prefix)%g" \

-e "s%@libdir@%$(libdir)%g" \

-e "s%@includedir@%$(includedir)%g" \

-e "s%@NAME@%$(NAME)%g" \

-e "s%@VERSION@%$(VERSION)%g" \

$< >$@

install: $(NAME).pc $(NAME)-ffi.pc

@$(MAKE) -C src install prefix=$(DESTDIR)$(prefix) \

includedir=$(DESTDIR)$(includedir) \

libdir=$(DESTDIR)$(libdir) \

libdevdir=$(DESTDIR)$(libdevdir) \

relativelibdir=$(relativelibdir)

$(INSTALL) -D -m 644 $(NAME).pc $(DESTDIR)$(libdevdir)/pkgconfig/$(NAME).pc

$(INSTALL) -D -m 644 $(NAME)-ffi.pc $(DESTDIR)$(libdevdir)/pkgconfig/$(NAME)-ffi.pc

$(INSTALL) -m 755 -d $(DESTDIR)$(mandir)/man2

$(INSTALL) -m 644 man/*.2 $(DESTDIR)$(mandir)/man2

$(INSTALL) -m 755 -d $(DESTDIR)$(mandir)/man3

$(INSTALL) -m 644 man/*.3 $(DESTDIR)$(mandir)/man3

$(INSTALL) -m 755 -d $(DESTDIR)$(mandir)/man7

$(INSTALL) -m 644 man/*.7 $(DESTDIR)$(mandir)/man7

install-tests:

@$(MAKE) -C test install prefix=$(DESTDIR)$(prefix) datadir=$(DESTDIR)$(datadir)

clean:

@rm -f config-host.mak config-host.h cscope.out $(NAME).pc $(NAME)-ffi.pc test/*.dmesg

@$(MAKE) -C src clean

@$(MAKE) -C test clean

@$(MAKE) -C examples clean

cscope:

@cscope -b -R

tag-archive:

@git tag $(TAG)

create-archive:

@git archive --prefix=$(NAME)-$(VERSION)/ -o $(NAME)-$(VERSION).tar.gz $(TAG)

@echo "The final archive is ./$(NAME)-$(VERSION).tar.gz."

archive: clean tag-archive create-archive

srpm: create-archive

$(RPMBUILD) --define "_sourcedir `pwd`" --define "_srcrpmdir `pwd`" --nodeps -bs $(SPECFILE)

TOP := $(dir $(CURDIR)/$(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST)))

NAME=liburing

SPECFILE=$(TOP)/$(NAME).spec

VERSION=$(shell awk '/Version:/ { print $$2 }' $(SPECFILE))

VERSION_MAJOR=$(shell echo $(VERSION) | cut -d. -f1)

VERSION_MINOR=$(shell echo $(VERSION) | cut -d. -f2)

TAG = $(NAME)-$(VERSION)