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+*.o
+*.trs
+
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+.gdb_history
+.libs
+Makefile
+Makefile.in
+
+/local*
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+/nbdkit-*.*/
+
+/aclocal.m4
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+/html/*.html
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+/plugins/example4/nbdkit-example4-plugin
+/plugins/tar/nbdkit-tar-plugin
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+/stamp-h1
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+/tests/partition-disk
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+/tests/test-data
+/tests/test-delay
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+/tests/test-exit-with-parent
+/tests/test-ext2
+/tests/test-file
+/tests/test-file-block
+/tests/test-gzip
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+/tests/test-lua
+/tests/test-memory
+/tests/test-newstyle
+/tests/test-nbd
+/tests/test-null
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+/tests/test-ocaml-plugin.so
+/tests/test-offset
+/tests/test-oldstyle
+/tests/test-partition
+/tests/test-perl
+/tests/test-python
+/tests/test-random
+/tests/test-ruby
+/tests/test-shell
+/tests/test-shell.img
+/tests/test-socket-activation
+/tests/test-split
+/tests/test-streaming
+/tests/test-tcl
+/tests/test-xz
+/test-driver
--- /dev/null
+nbdkit
+Copyright (C) 2013-2018 Red Hat Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+* Neither the name of Red Hat nor the names of its contributors may be
+used to endorse or promote products derived from this software without
+specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
--- /dev/null
+# nbdkit
+# Copyright (C) 2013-2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+include $(top_srcdir)/common-rules.mk
+
+ACLOCAL_AMFLAGS = -I m4
+
+EXTRA_DIST = \
+ .dir-locals.el \
+ .gitignore \
+ html/pod.css \
+ LICENSE \
+ OTHER_PLUGINS \
+ valgrind-suppressions \
+ m4/.gitignore
+
+CLEANFILES += html/*.html
+
+# NB: This is not the real nbdkit binary. It's a wrapper that allows
+# you to run nbdkit from the build directory before it is installed.
+noinst_PROGRAMS = nbdkit
+nbdkit_SOURCES = wrapper.c src/options.h
+nbdkit_CPPFLAGS = \
+ -I$(top_srcdir)/src \
+ -Dbuilddir=\"$(abs_top_builddir)\" \
+ -Dsrcdir=\"$(abs_top_srcdir)\" \
+ -DVALGRIND=\"$(VALGRIND)\"
+nbdkit_CFLAGS = $(WARNINGS_CFLAGS)
+nbdkit_DEPENDENCIES = config.status
+
+SUBDIRS = \
+ bash \
+ docs \
+ include \
+ common/include \
+ src
+
+if HAVE_PLUGINS
+SUBDIRS += \
+ common/bitmap \
+ common/regions \
+ common/sparse \
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+ filters
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+
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--- /dev/null
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+# met:
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+# * Redistributions of source code must retain the above copyright
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+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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+ || exit 1
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+ }; \
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+ else \
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+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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+ fi
+mostlyclean-generic:
+
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+ -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
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+maintainer-clean-generic:
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+ -rm -f $(am__CONFIG_DISTCLEAN_FILES)
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+ distdir distuninstallcheck dvi dvi-am html html-am info \
+ info-am install install-am install-data install-data-am \
+ install-dvi install-dvi-am install-exec install-exec-am \
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+ install-man install-pdf install-pdf-am install-ps \
+ install-ps-am install-strip installcheck installcheck-am \
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+ maintainer-clean-generic mostlyclean mostlyclean-compile \
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+.PRECIOUS: Makefile
+
+
+check-valgrind:
+ $(MAKE) -C tests check-valgrind
+
+check-root:
+ $(MAKE) -C tests check-root
+
+# Maintainer only: check no files are missing from EXTRA_DIST rules,
+# and that all generated files have been included in the tarball.
+# (Note you must have done 'make dist')
+
+maintainer-check-extra-dist:
+ @zcat $(PACKAGE_NAME)-$(VERSION).tar.gz | tar tf - | sort | \
+ sed 's,^$(PACKAGE_NAME)-$(VERSION)/,,' > tarfiles
+ @git ls-files | \
+ sort > gitfiles
+ @comm -13 tarfiles gitfiles > comm-out
+ @echo Checking for differences between EXTRA_DIST and git ...
+ @cat comm-out
+ @[ ! -s comm-out ]
+ @rm tarfiles gitfiles comm-out
+ @echo PASS: EXTRA_DIST tests
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+Have you written an nbdkit plugin that you're willing to share?
+Email <libguestfs@redhat.com> to get it added to this list.
+
+* XVA (XenServer Virtual Appliance)
+
+This simple plugin written in Perl lets you read these files and
+reexport them as NBD. It does not require that the XVA is unpacked:
+https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg02971.html
+https://lists.gnu.org/archive/html/qemu-devel/2017-11/plHKJ062x5Uo.pl
+
+The whole thread is worth reading because several different approaches
+to dealing with XVA files are presented:
+https://lists.gnu.org/archive/html/qemu-devel/2017-11/threads.html#02839
--- /dev/null
+NBD — Network Block Device — is a protocol for accessing Block Devices
+(hard disks and disk-like things) over a Network.
+
+nbdkit is a toolkit for creating NBD servers.
+
+The key features are:
+
+ * Multithreaded NBD server written in C with good performance.
+
+ * Minimal dependencies for the basic server.
+
+ * Liberal license (BSD) allows nbdkit to be linked to proprietary
+ libraries or included in proprietary code.
+
+ * Well-documented, simple plugin API with a stable ABI guarantee.
+ Lets you export “unconventional” block devices easily.
+
+ * You can write plugins in C, Lua, Perl, Python, OCaml, Ruby, shell
+ script or Tcl.
+
+ * Filters can be stacked in front of plugins to transform the output.
+
+For documentation, see the ‘docs/’ directory.
+
+For plugins, examples and filters, see the ‘plugins/’ and ‘filters/’
+directories.
+
+LICENSE
+=======
+
+This software is copyright (C) Red Hat Inc. and licensed under a BSD
+license. See ‘LICENSE’ for details.
+
+BUILDING FROM SOURCE
+====================
+
+Requirements
+------------
+
+To build the basic server and some plugins nbdkit needs nothing except
+Linux, FreeBSD or OpenBSD, and:
+
+ - GCC or Clang
+
+ - bash
+
+ - GNU make
+
+Although it is possible to build without it, it’s recommended to
+enable TLS (authentication and encryption) support for which you will
+need:
+
+ - gnutls >= 3.3.0
+
+Optional dependencies
+---------------------
+
+To build the man pages, you will optionally need to install:
+
+ - Perl
+
+ - Pod::Man and Pod::Simple (Perl library)
+
+To run the tests:
+
+ - GNU coreutils (for ‘seq’ and some other programs)
+
+For the gzip plugin:
+
+ - zlib
+
+For the xz plugin:
+
+ - liblzma
+
+For the curl (HTTP/FTP) plugin:
+
+ - libcurl
+
+For the iso plugin:
+
+ - genisoimage or mkisofs
+
+For the floppy plugin:
+
+ - iconv (on Linux this is built into glibc, on other systems
+ it may be a separate library)
+
+For the libvirt plugin:
+
+ - libvirt
+
+For the libguestfs plugin, and to run parts of the test suite:
+
+ - libguestfs
+
+ - guestfish (from libguestfs)
+
+For the ext2 plugin:
+
+ - ext2fs
+
+ - com_err
+
+For the Perl, example4 and tar plugins:
+
+ - perl interpreter
+
+ - perl development libraries
+
+ - perl module ExtUtils::Embed
+
+For the Python plugin:
+
+ - python interpreter
+ (either version 2 or 3 may be used)
+
+ - python development libraries
+
+For the OCaml plugin:
+
+ - OCaml >= 4.02.2
+
+For the Tcl plugin:
+
+ - Tcl development library and headers
+
+For the Lua plugin:
+
+ - Lua development library and headers
+
+For bash tab completion:
+
+ - bash-completion >= 1.99
+
+To test for memory leaks (‘make check-valgrind’):
+
+ - valgrind program and development headers
+
+For non-essential enhancements to the test suite:
+
+ - losetup (from util-linux package)
+
+ - qemu-io (usually shipped with qemu)
+
+ - socat
+
+ - ss (from iproute package)
+
+Building
+--------
+
+ To build from tarball: To build from git:
+ ---------------------- ------------------
+ autoreconf -i
+ ./configure ./configure
+ make make
+ make check make check
+
+To run nbdkit from the source directory, use the top level ./nbdkit
+wrapper. It will run nbdkit and plugins from the locally compiled
+directory:
+
+ $ ./nbdkit example1 -f -v
+ ./src/nbdkit ./plugins/example1/.libs/nbdkit-example1-plugin.so -f -v
+ [etc]
+
+Optionally run this command as root to install everything:
+
+ make install
+
+Python
+------
+
+By default nbdkit uses the Python version of the Python interpreter
+called “python” on the current $PATH. To use another version of
+Python you may need to set the PYTHON variable when configuring. For
+example:
+
+ ./configure PYTHON=/usr/bin/python3
+
+Running the tests
+-----------------
+
+You will need to install libguestfs to run most of the test suite:
+
+ make check
+
+The test suite is fairly comprehensive. It runs the newly built
+nbdkit + plugins as a captive process, and tests them using
+libguestfs. If there is a failure, look at the corresponding
+‘tests/*.log’ file for debug information.
+
+A few tests require root privileges, and are skipped by default. To
+run them you must do:
+
+ sudo make check-root
+
+DOWNLOAD TARBALLS
+=================
+
+Tarballs are available from:
+http://libguestfs.org/download/nbdkit
+
+DEVELOPERS
+==========
+
+Install the valgrind program and development headers.
+
+Use:
+
+ ./configure --enable-gcc-warnings --enable-valgrind
+
+When testing use:
+
+ make check
+ make check-valgrind
+
+For development ideas, see the TODO file.
+
+The upstream git repository is:
+https://github.com/libguestfs/nbdkit
+
+Please send patches to the libguestfs mailing list:
+https://www.redhat.com/mailman/listinfo/libguestfs
+
+For further information, see:
+http://libguestfs.org/
+https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md
--- /dev/null
+To-do list for nbdkit
+======================================================================
+
+General ideas for improvements
+------------------------------
+
+* Listen on specific interfaces or protocols (eg. only IPv6).
+
+* Performance - measure and improve it.
+
+* Exit on last connection (the default behaviour of qemu-nbd unless
+ you use -t).
+
+* Limit number of incoming connections (like qemu-nbd -e).
+
+* For parallel plugins, only create threads on demand from parallel
+ client requests, rather than pre-creating all threads at connection
+ time, up to the thread pool size limit. Of course, once created, a
+ thread is reused as possible until the connection closes.
+
+* Async callbacks. The current parallel support requires one thread
+ per pending message; a solution with fewer threads would split
+ low-level code between request and response, where the callback has
+ to inform nbdkit when the response is ready:
+ https://www.redhat.com/archives/libguestfs/2018-January/msg00149.html
+
+* More NBD protocol features. Qemu has implemented Structured Replies,
+ which allows for more efficient serving of sparse files. Also in
+ the upstream pipeline: proposals for block status and online resize.
+
+* Add a callback to let plugins request minimum alignment for the
+ buffer to pread/pwrite; useful for a plugin utilizing O_DIRECT or
+ other situation where pre-aligned buffers are more efficient.
+ Ideally, a blocksize filter would honor strict alignment below and
+ advertise loose alignment above; all other filters (particularly
+ ones like offset) can fail to initialize if they can't guarantee
+ strict alignment and don't want to deal with bounce buffers.
+
+* Add per-connection caching of .can_FOO callbacks (we already have
+ some: .can_write is only called once, but .can_fua is called on
+ every request with the FUA flag set).
+
+* Test that zero-length read/write requests behave correctly
+ (NBD protocol says they are unspecified).
+
+* Test and document how to run nbdkit from inetd and xinetd in
+ nbdkit-service(1).
+
+Suggestions for plugins
+-----------------------
+
+Note: qemu supports other formats such as libssh, libnfs, iscsi,
+gluster and ceph/rbd, and while similar plugins could be written for
+nbdkit there is no compelling reason unless the result is better than
+qemu-nbd. For the majority of users it would be better if they were
+directed to qemu-nbd for these use cases.
+
+* XVA files
+
+ https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg02971.html
+ is a partial solution but it needs cleaning up.
+
+* Create ext2 filesystems
+
+ Similar to nbdkit-floppy-plugin which creates FAT32 filesystems, we
+ could also create ext2 filesystems. This is relatively
+ straightforward using libext2fs (part of e2fsprogs). In fact we
+ already use this library for the unrelated nbdkit-ext2-plugin.
+
+nbdkit-nbd-plugin could use enhancements:
+
+* FUA passthrough, rather than extra FLUSH calls. For this, .can_fua
+ must be exposed to plugins (not just filters), and needs to be
+ tri-state rather than just bool.
+
+* Enable client-side TLS (right now, the nbd plugin allows us to
+ support an encrypted client connecting to a plain server; but we
+ would need TLS to support a plain client connecting to an encrypted
+ server).
+
+* Support for connecting to a server over IP rather than just Unix
+ sockets.
+
+nbdkit-floppy-plugin needs boot sector support. In theory this is
+easy (eg. using SYSLINUX), but the practical reality of making a fully
+bootable floppy is rather more complex.
+
+Suggestions for filters
+-----------------------
+
+* tar plugin should really be a filter
+
+* xz plugin should really be a filter
+
+* gzip plugin should really be a filter
+
+* masking plugin features for testing clients (see 'nozero' and 'fua'
+ filters for examples)
+
+nbdkit-cache-filter needs considerable work:
+
+* allow the user to limit the total size of the cache
+
+* handle ENOSPC errors
+
+* implement some cache replacement policies
+
+* some sort of background task or thread to write out dirty blocks
+
+Composing nbdkit
+----------------
+
+Filters allow certain types of composition, but others would not be
+possible, for example RAIDing over multiple nbd sources. Because the
+plugin API limits us to loading a single plugin to the server, the
+best way to do this (and the most robust) is to compose multiple
+nbdkit processes.
+
+The nbd plugin (plugins/nbd) already contains an NBD client, so we
+could factor this client out and make it available to other plugins to
+use.
--- /dev/null
+# generated automatically by aclocal 1.16.1 -*- Autoconf -*-
+
+# Copyright (C) 1996-2018 Free Software Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
+m4_ifndef([AC_AUTOCONF_VERSION],
+ [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
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+If you have problems, you may need to regenerate the build system entirely.
+To do so, use the procedure documented by the package, typically 'autoreconf'.])])
+
+# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
+# serial 11 (pkg-config-0.29.1)
+
+dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
+dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+dnl General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+dnl 02111-1307, USA.
+dnl
+dnl As a special exception to the GNU General Public License, if you
+dnl distribute this file as part of a program that contains a
+dnl configuration script generated by Autoconf, you may include it under
+dnl the same distribution terms that you use for the rest of that
+dnl program.
+
+dnl PKG_PREREQ(MIN-VERSION)
+dnl -----------------------
+dnl Since: 0.29
+dnl
+dnl Verify that the version of the pkg-config macros are at least
+dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
+dnl installed version of pkg-config, this checks the developer's version
+dnl of pkg.m4 when generating configure.
+dnl
+dnl To ensure that this macro is defined, also add:
+dnl m4_ifndef([PKG_PREREQ],
+dnl [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
+dnl
+dnl See the "Since" comment for each macro you use to see what version
+dnl of the macros you require.
+m4_defun([PKG_PREREQ],
+[m4_define([PKG_MACROS_VERSION], [0.29.1])
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+ [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
+])dnl PKG_PREREQ
+
+dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
+dnl ----------------------------------
+dnl Since: 0.16
+dnl
+dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
+dnl first found in the path. Checks that the version of pkg-config found
+dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
+dnl used since that's the first version where most current features of
+dnl pkg-config existed.
+AC_DEFUN([PKG_PROG_PKG_CONFIG],
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+m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
+AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
+AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
+AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
+
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+ AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
+fi
+if test -n "$PKG_CONFIG"; then
+ _pkg_min_version=m4_default([$1], [0.9.0])
+ AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
+ if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ PKG_CONFIG=""
+ fi
+fi[]dnl
+])dnl PKG_PROG_PKG_CONFIG
+
+dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+dnl -------------------------------------------------------------------
+dnl Since: 0.18
+dnl
+dnl Check to see whether a particular set of modules exists. Similar to
+dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
+dnl
+dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
+dnl only at the first occurence in configure.ac, so if the first place
+dnl it's called might be skipped (such as if it is within an "if", you
+dnl have to call PKG_CHECK_EXISTS manually
+AC_DEFUN([PKG_CHECK_EXISTS],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+if test -n "$PKG_CONFIG" && \
+ AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
+ m4_default([$2], [:])
+m4_ifvaln([$3], [else
+ $3])dnl
+fi])
+
+dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
+dnl ---------------------------------------------
+dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
+dnl pkg_failed based on the result.
+m4_define([_PKG_CONFIG],
+[if test -n "$$1"; then
+ pkg_cv_[]$1="$$1"
+ elif test -n "$PKG_CONFIG"; then
+ PKG_CHECK_EXISTS([$3],
+ [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
+ test "x$?" != "x0" && pkg_failed=yes ],
+ [pkg_failed=yes])
+ else
+ pkg_failed=untried
+fi[]dnl
+])dnl _PKG_CONFIG
+
+dnl _PKG_SHORT_ERRORS_SUPPORTED
+dnl ---------------------------
+dnl Internal check to see if pkg-config supports short errors.
+AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+ _pkg_short_errors_supported=yes
+else
+ _pkg_short_errors_supported=no
+fi[]dnl
+])dnl _PKG_SHORT_ERRORS_SUPPORTED
+
+
+dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
+dnl [ACTION-IF-NOT-FOUND])
+dnl --------------------------------------------------------------
+dnl Since: 0.4.0
+dnl
+dnl Note that if there is a possibility the first call to
+dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
+dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
+AC_DEFUN([PKG_CHECK_MODULES],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
+AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
+
+pkg_failed=no
+AC_MSG_CHECKING([for $1])
+
+_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
+_PKG_CONFIG([$1][_LIBS], [libs], [$2])
+
+m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
+and $1[]_LIBS to avoid the need to call pkg-config.
+See the pkg-config man page for more details.])
+
+if test $pkg_failed = yes; then
+ AC_MSG_RESULT([no])
+ _PKG_SHORT_ERRORS_SUPPORTED
+ if test $_pkg_short_errors_supported = yes; then
+ $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
+ else
+ $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
+ fi
+ # Put the nasty error message in config.log where it belongs
+ echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
+
+ m4_default([$4], [AC_MSG_ERROR(
+[Package requirements ($2) were not met:
+
+$$1_PKG_ERRORS
+
+Consider adjusting the PKG_CONFIG_PATH environment variable if you
+installed software in a non-standard prefix.
+
+_PKG_TEXT])[]dnl
+ ])
+elif test $pkg_failed = untried; then
+ AC_MSG_RESULT([no])
+ m4_default([$4], [AC_MSG_FAILURE(
+[The pkg-config script could not be found or is too old. Make sure it
+is in your PATH or set the PKG_CONFIG environment variable to the full
+path to pkg-config.
+
+_PKG_TEXT
+
+To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
+ ])
+else
+ $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
+ $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
+ AC_MSG_RESULT([yes])
+ $3
+fi[]dnl
+])dnl PKG_CHECK_MODULES
+
+
+dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
+dnl [ACTION-IF-NOT-FOUND])
+dnl ---------------------------------------------------------------------
+dnl Since: 0.29
+dnl
+dnl Checks for existence of MODULES and gathers its build flags with
+dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
+dnl and VARIABLE-PREFIX_LIBS from --libs.
+dnl
+dnl Note that if there is a possibility the first call to
+dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
+dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
+dnl configure.ac.
+AC_DEFUN([PKG_CHECK_MODULES_STATIC],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+_save_PKG_CONFIG=$PKG_CONFIG
+PKG_CONFIG="$PKG_CONFIG --static"
+PKG_CHECK_MODULES($@)
+PKG_CONFIG=$_save_PKG_CONFIG[]dnl
+])dnl PKG_CHECK_MODULES_STATIC
+
+
+dnl PKG_INSTALLDIR([DIRECTORY])
+dnl -------------------------
+dnl Since: 0.27
+dnl
+dnl Substitutes the variable pkgconfigdir as the location where a module
+dnl should install pkg-config .pc files. By default the directory is
+dnl $libdir/pkgconfig, but the default can be changed by passing
+dnl DIRECTORY. The user can override through the --with-pkgconfigdir
+dnl parameter.
+AC_DEFUN([PKG_INSTALLDIR],
+[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
+m4_pushdef([pkg_description],
+ [pkg-config installation directory @<:@]pkg_default[@:>@])
+AC_ARG_WITH([pkgconfigdir],
+ [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
+ [with_pkgconfigdir=]pkg_default)
+AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
+m4_popdef([pkg_default])
+m4_popdef([pkg_description])
+])dnl PKG_INSTALLDIR
+
+
+dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
+dnl --------------------------------
+dnl Since: 0.27
+dnl
+dnl Substitutes the variable noarch_pkgconfigdir as the location where a
+dnl module should install arch-independent pkg-config .pc files. By
+dnl default the directory is $datadir/pkgconfig, but the default can be
+dnl changed by passing DIRECTORY. The user can override through the
+dnl --with-noarch-pkgconfigdir parameter.
+AC_DEFUN([PKG_NOARCH_INSTALLDIR],
+[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
+m4_pushdef([pkg_description],
+ [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
+AC_ARG_WITH([noarch-pkgconfigdir],
+ [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
+ [with_noarch_pkgconfigdir=]pkg_default)
+AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
+m4_popdef([pkg_default])
+m4_popdef([pkg_description])
+])dnl PKG_NOARCH_INSTALLDIR
+
+
+dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
+dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+dnl -------------------------------------------
+dnl Since: 0.28
+dnl
+dnl Retrieves the value of the pkg-config variable for the given module.
+AC_DEFUN([PKG_CHECK_VAR],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
+
+_PKG_CONFIG([$1], [variable="][$3]["], [$2])
+AS_VAR_COPY([$1], [pkg_cv_][$1])
+
+AS_VAR_IF([$1], [""], [$5], [$4])dnl
+])dnl PKG_CHECK_VAR
+
+dnl PKG_WITH_MODULES(VARIABLE-PREFIX, MODULES,
+dnl [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],
+dnl [DESCRIPTION], [DEFAULT])
+dnl ------------------------------------------
+dnl
+dnl Prepare a "--with-" configure option using the lowercase
+dnl [VARIABLE-PREFIX] name, merging the behaviour of AC_ARG_WITH and
+dnl PKG_CHECK_MODULES in a single macro.
+AC_DEFUN([PKG_WITH_MODULES],
+[
+m4_pushdef([with_arg], m4_tolower([$1]))
+
+m4_pushdef([description],
+ [m4_default([$5], [build with ]with_arg[ support])])
+
+m4_pushdef([def_arg], [m4_default([$6], [auto])])
+m4_pushdef([def_action_if_found], [AS_TR_SH([with_]with_arg)=yes])
+m4_pushdef([def_action_if_not_found], [AS_TR_SH([with_]with_arg)=no])
+
+m4_case(def_arg,
+ [yes],[m4_pushdef([with_without], [--without-]with_arg)],
+ [m4_pushdef([with_without],[--with-]with_arg)])
+
+AC_ARG_WITH(with_arg,
+ AS_HELP_STRING(with_without, description[ @<:@default=]def_arg[@:>@]),,
+ [AS_TR_SH([with_]with_arg)=def_arg])
+
+AS_CASE([$AS_TR_SH([with_]with_arg)],
+ [yes],[PKG_CHECK_MODULES([$1],[$2],$3,$4)],
+ [auto],[PKG_CHECK_MODULES([$1],[$2],
+ [m4_n([def_action_if_found]) $3],
+ [m4_n([def_action_if_not_found]) $4])])
+
+m4_popdef([with_arg])
+m4_popdef([description])
+m4_popdef([def_arg])
+
+])dnl PKG_WITH_MODULES
+
+dnl PKG_HAVE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
+dnl [DESCRIPTION], [DEFAULT])
+dnl -----------------------------------------------
+dnl
+dnl Convenience macro to trigger AM_CONDITIONAL after PKG_WITH_MODULES
+dnl check._[VARIABLE-PREFIX] is exported as make variable.
+AC_DEFUN([PKG_HAVE_WITH_MODULES],
+[
+PKG_WITH_MODULES([$1],[$2],,,[$3],[$4])
+
+AM_CONDITIONAL([HAVE_][$1],
+ [test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"])
+])dnl PKG_HAVE_WITH_MODULES
+
+dnl PKG_HAVE_DEFINE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
+dnl [DESCRIPTION], [DEFAULT])
+dnl ------------------------------------------------------
+dnl
+dnl Convenience macro to run AM_CONDITIONAL and AC_DEFINE after
+dnl PKG_WITH_MODULES check. HAVE_[VARIABLE-PREFIX] is exported as make
+dnl and preprocessor variable.
+AC_DEFUN([PKG_HAVE_DEFINE_WITH_MODULES],
+[
+PKG_HAVE_WITH_MODULES([$1],[$2],[$3],[$4])
+
+AS_IF([test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"],
+ [AC_DEFINE([HAVE_][$1], 1, [Enable ]m4_tolower([$1])[ support])])
+])dnl PKG_HAVE_DEFINE_WITH_MODULES
+
+# Copyright (C) 2002-2018 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_AUTOMAKE_VERSION(VERSION)
+# ----------------------------
+# Automake X.Y traces this macro to ensure aclocal.m4 has been
+# generated from the m4 files accompanying Automake X.Y.
+# (This private macro should not be called outside this file.)
+AC_DEFUN([AM_AUTOMAKE_VERSION],
+[am__api_version='1.16'
+dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
+dnl require some minimum version. Point them to the right macro.
+m4_if([$1], [1.16.1], [],
+ [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
+])
+
+# _AM_AUTOCONF_VERSION(VERSION)
+# -----------------------------
+# aclocal traces this macro to find the Autoconf version.
+# This is a private macro too. Using m4_define simplifies
+# the logic in aclocal, which can simply ignore this definition.
+m4_define([_AM_AUTOCONF_VERSION], [])
+
+# AM_SET_CURRENT_AUTOMAKE_VERSION
+# -------------------------------
+# Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
+# This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
+AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
+[AM_AUTOMAKE_VERSION([1.16.1])dnl
+m4_ifndef([AC_AUTOCONF_VERSION],
+ [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+_AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
+
+# AM_AUX_DIR_EXPAND -*- Autoconf -*-
+
+# Copyright (C) 2001-2018 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
+# $ac_aux_dir to '$srcdir/foo'. In other projects, it is set to
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+# tool from the auxiliary directory. The problem is that $srcdir (and
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+#
+# $ac_aux_dir/missing
+# fails when called from a subdirectory if $ac_aux_dir is relative
+# $top_srcdir/$ac_aux_dir/missing
+# fails if $ac_aux_dir is absolute,
+# fails when called from a subdirectory in a VPATH build with
+# a relative $ac_aux_dir
+#
+# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
+# are both prefixed by $srcdir. In an in-source build this is usually
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+# start a VPATH build or use an absolute $srcdir.
+#
+# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
+# iff we strip the leading $srcdir from $ac_aux_dir. That would be:
+# am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
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+# configure, and could therefore not use this "fixed" $ac_aux_dir.
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+AC_DEFUN([AM_AUX_DIR_EXPAND],
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+am_aux_dir=`cd "$ac_aux_dir" && pwd`
+])
+
+# AM_CONDITIONAL -*- Autoconf -*-
+
+# Copyright (C) 1997-2018 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_CONDITIONAL(NAME, SHELL-CONDITION)
+# -------------------------------------
+# Define a conditional.
+AC_DEFUN([AM_CONDITIONAL],
+[AC_PREREQ([2.52])dnl
+ m4_if([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])],
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+_AM_SUBST_NOTMAKE([$1_TRUE])dnl
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+m4_define([_AM_COND_VALUE_$1], [$2])dnl
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+ $1_TRUE=
+ $1_FALSE='#'
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+AC_CONFIG_COMMANDS_PRE(
+[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
+ AC_MSG_ERROR([[conditional "$1" was never defined.
+Usually this means the macro was only invoked conditionally.]])
+fi])])
+
+# Copyright (C) 1999-2018 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+
+# There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
+# written in clear, in which case automake, when reading aclocal.m4,
+# will think it sees a *use*, and therefore will trigger all it's
+# C support machinery. Also note that it means that autoscan, seeing
+# CC etc. in the Makefile, will ask for an AC_PROG_CC use...
+
+
+# _AM_DEPENDENCIES(NAME)
+# ----------------------
+# See how the compiler implements dependency checking.
+# NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
+# We try a few techniques and use that to set a single cache variable.
+#
+# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
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+AC_DEFUN([_AM_DEPENDENCIES],
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+AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
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+AC_REQUIRE([AM_DEP_TRACK])dnl
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+ mkdir sub
+
+ am_cv_$1_dependencies_compiler_type=none
+ if test "$am_compiler_list" = ""; then
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+ for depmode in $am_compiler_list; do
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+ # overwrite some of them when testing with obscure command lines.
+ # This happens at least with the AIX C compiler.
+ : > sub/conftest.c
+ for i in 1 2 3 4 5 6; do
+ echo '#include "conftst'$i'.h"' >> sub/conftest.c
+ # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
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+ echo '/* dummy */' > sub/conftst$i.h
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+ nosideeffect)
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+ break
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+ msvc7 | msvc7msys | msvisualcpp | msvcmsys)
+ # This compiler won't grok '-c -o', but also, the minuso test has
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+ am__obj=conftest.${OBJEXT-o}
+ am__minus_obj=
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+ none) break ;;
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+ if depmode=$depmode \
+ source=sub/conftest.c object=$am__obj \
+ depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+ $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+ >/dev/null 2>conftest.err &&
+ grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+ ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
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+ # When given -MP, icc 7.0 and 7.1 complain thusly:
+ # icc: Command line warning: ignoring option '-M'; no argument required
+ # The diagnosis changed in icc 8.0:
+ # icc: Command line remark: option '-MP' not supported
+ if (grep 'ignoring option' conftest.err ||
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+ am_cv_$1_dependencies_compiler_type=$depmode
+ break
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+ fi
+ done
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+ cd ..
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+fi
+])
+AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
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+
+
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+[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
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+
+# AM_DEP_TRACK
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+ [speeds up one-time build])])
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+_AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
+AC_SUBST([am__nodep])dnl
+_AM_SUBST_NOTMAKE([am__nodep])dnl
+])
+
+# Generate code to set up dependency tracking. -*- Autoconf -*-
+
+# Copyright (C) 1999-2018 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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+m4_include([m4/ocaml.m4])
--- /dev/null
+# nbdkit
+# Copyright (C) 2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+include $(top_srcdir)/common-rules.mk
+
+EXTRA_DIST = README
+
+if HAVE_BASH_COMPLETION
+
+dist_bashcomp_DATA = nbdkit
+
+endif
--- /dev/null
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+# All rights reserved.
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+# met:
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+# * Neither the name of Red Hat nor the names of its contributors may be
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+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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+OCAMLOPTDOTOPT = @OCAMLOPTDOTOPT@
+OCAMLOPTFLAGS = @OCAMLOPTFLAGS@
+OCAMLVERSION = @OCAMLVERSION@
+OTOOL = @OTOOL@
+OTOOL64 = @OTOOL64@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PERL = @PERL@
+PERL_ARCHLIB = @PERL_ARCHLIB@
+PERL_CFLAGS = @PERL_CFLAGS@
+PERL_LDOPTS = @PERL_LDOPTS@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PODWRAPPER = @PODWRAPPER@
+PTHREAD_CC = @PTHREAD_CC@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+PTHREAD_LIBS = @PTHREAD_LIBS@
+PYTHON = @PYTHON@
+PYTHON_CFLAGS = @PYTHON_CFLAGS@
+PYTHON_LDFLAGS = @PYTHON_LDFLAGS@
+PYTHON_LIBS = @PYTHON_LIBS@
+PYTHON_VERSION = @PYTHON_VERSION@
+RANLIB = @RANLIB@
+RUBY = @RUBY@
+RUBY_CFLAGS = @RUBY_CFLAGS@
+RUBY_LIBS = @RUBY_LIBS@
+SED = @SED@
+SEQ = @SEQ@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+STRIP = @STRIP@
+TCL_CFLAGS = @TCL_CFLAGS@
+TCL_LIBS = @TCL_LIBS@
+VALGRIND = @VALGRIND@
+VALGRIND_CFLAGS = @VALGRIND_CFLAGS@
+VALGRIND_LIBS = @VALGRIND_LIBS@
+VERSION = @VERSION@
+WARNINGS_CFLAGS = @WARNINGS_CFLAGS@
+ZLIB_CFLAGS = @ZLIB_CFLAGS@
+ZLIB_LIBS = @ZLIB_LIBS@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_AR = @ac_ct_AR@
+ac_ct_CC = @ac_ct_CC@
+ac_ct_CXX = @ac_ct_CXX@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+ax_pthread_config = @ax_pthread_config@
+bashcompdir = @bashcompdir@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+filters = @filters@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+lang_plugins = @lang_plugins@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+non_lang_plugins = @non_lang_plugins@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+plugins = @plugins@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+plugindir = $(libdir)/nbdkit/plugins
+filterdir = $(libdir)/nbdkit/filters
+CLEANFILES = *~ *.cmi *.cmx *.cmxa *.so
+EXTRA_DIST = README
+@HAVE_BASH_COMPLETION_TRUE@dist_bashcomp_DATA = nbdkit
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(top_srcdir)/common-rules.mk $(am__configure_deps)
+ @for dep in $?; do \
+ case '$(am__configure_deps)' in \
+ *$$dep*) \
+ ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+ && { if test -f $@; then exit 0; else break; fi; }; \
+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign bash/Makefile'; \
+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --foreign bash/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ @case '$?' in \
+ *config.status*) \
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+ *) \
+ echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
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+ esac;
+$(top_srcdir)/common-rules.mk $(am__empty):
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: $(am__configure_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): $(am__aclocal_m4_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+mostlyclean-libtool:
+ -rm -f *.lo
+
+clean-libtool:
+ -rm -rf .libs _libs
+install-dist_bashcompDATA: $(dist_bashcomp_DATA)
+ @$(NORMAL_INSTALL)
+ @list='$(dist_bashcomp_DATA)'; test -n "$(bashcompdir)" || list=; \
+ if test -n "$$list"; then \
+ echo " $(MKDIR_P) '$(DESTDIR)$(bashcompdir)'"; \
+ $(MKDIR_P) "$(DESTDIR)$(bashcompdir)" || exit 1; \
+ fi; \
+ for p in $$list; do \
+ if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
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+ while read files; do \
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+ done
+
+uninstall-dist_bashcompDATA:
+ @$(NORMAL_UNINSTALL)
+ @list='$(dist_bashcomp_DATA)'; test -n "$(bashcompdir)" || list=; \
+ files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+ dir='$(DESTDIR)$(bashcompdir)'; $(am__uninstall_files_from_dir)
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(BUILT_SOURCES)
+ $(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+ @srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+ topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+ list='$(DISTFILES)'; \
+ dist_files=`for file in $$list; do echo $$file; done | \
+ sed -e "s|^$$srcdirstrip/||;t" \
+ -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+ case $$dist_files in \
+ */*) $(MKDIR_P) `echo "$$dist_files" | \
+ sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+ sort -u` ;; \
+ esac; \
+ for file in $$dist_files; do \
+ if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+ if test -d $$d/$$file; then \
+ dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+ if test -d "$(distdir)/$$file"; then \
+ find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+ fi; \
+ if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+ cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+ find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+ fi; \
+ cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+ else \
+ test -f "$(distdir)/$$file" \
+ || cp -p $$d/$$file "$(distdir)/$$file" \
+ || exit 1; \
+ fi; \
+ done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+ for dir in "$(DESTDIR)$(bashcompdir)"; do \
+ test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+ done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+ @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+ if test -z '$(STRIP)'; then \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ install; \
+ else \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+ fi
+mostlyclean-generic:
+
+clean-generic:
+ -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
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+
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+ -rm -f Makefile
+distclean-am: clean-am distclean-generic
+
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+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
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+install-data-am: install-dist_bashcompDATA
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+ -rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
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+.MAKE: install-am install-strip
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+ cscopelist-am ctags-am distclean distclean-generic \
+ distclean-libtool distdir dvi dvi-am html html-am info info-am \
+ install install-am install-data install-data-am \
+ install-dist_bashcompDATA install-dvi install-dvi-am \
+ install-exec install-exec-am install-html install-html-am \
+ install-info install-info-am install-man install-pdf \
+ install-pdf-am install-ps install-ps-am install-strip \
+ installcheck installcheck-am installdirs maintainer-clean \
+ maintainer-clean-generic mostlyclean mostlyclean-generic \
+ mostlyclean-libtool pdf pdf-am ps ps-am tags-am uninstall \
+ uninstall-am uninstall-dist_bashcompDATA
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+This directory contains the scripts for tab-completing commands in
+bash. Note these new-style demand-loaded scripts require
+bash-completion >= 1.99.
+
+Tip: To test the bash completions without having to install them,
+simply start a new shell and do:
+
+ source ./bash/nbdkit; PATH=$PWD:$PATH
--- /dev/null
+# nbdkit bash completion script -*- shell-script -*-
+# Copyright (C) 2010-2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+_nbdkit_list_plugins ()
+{
+ local plugindir
+ plugindir="$(
+ nbdkit --dump-config | grep ^plugindir= | sed 's/^plugindir=//'
+ )"
+ ls -1 "$plugindir" | sed 's/^nbdkit-//' | sed 's/-plugin.*//'
+}
+
+_nbdkit_list_filters ()
+{
+ local filterdir
+ filterdir="$(
+ nbdkit --dump-config | grep ^filterdir= | sed 's/^filterdir=//'
+ )"
+ ls -1 "$filterdir" | sed 's/^nbdkit-//' | sed 's/-filter.*//'
+}
+
+# This handler function is called when the user presses tab.
+_nbdkit ()
+{
+ local cur prev words cword split
+ local shortopts longopts plugin plugins filters args i
+
+ _init_completion -s || return
+
+ # Did we get the plugin name yet?
+ # This is only a heuristic because it can be confused by
+ # long opt parameters with an arguments. XXX
+ plugin=
+ for (( i=1; i < ${#words[@]}; ++i)) ; do
+ if [[ "${words[i]}" =~ ^[a-zA-Z0-9]+$ ]]; then
+ plugin="${words[i]}"
+ break
+ fi
+ done
+
+ # Previous item on the current line is a completable flag or plugin name?
+ case "$prev" in
+ --filter)
+ filters="$(_nbdkit_list_filters)"
+ COMPREPLY=( $(compgen -W "$filters" "$cur") )
+ return ;;
+ --tls)
+ COMPREPLY=( $(compgen -W "off on require" "$cur") )
+ return ;;
+ # Could complete -u and -g options too. XXX
+ esac
+
+ # Current item is an option we can expand?
+ case "$cur" in
+ --*)
+ longopts="$(nbdkit --long-options)"
+ COMPREPLY=( $(compgen -W "$longopts" -- "$cur") )
+ return ;;
+ -*)
+ shortopts="$(nbdkit --short-options)"
+ longopts="$(nbdkit --long-options)"
+ COMPREPLY=( $(compgen -W "$shortopts $longopts" -- "$cur") )
+ return ;;
+ *)
+ if [ "$plugin" = "" ]; then
+ # Complete plugin name.
+ plugins="$(_nbdkit_list_plugins)"
+ COMPREPLY=( $(compgen -W "$plugins" "$cur") )
+ return
+ else
+ # Complete plugin args.
+ args="$(
+ nbdkit $plugin --help 2>/dev/null |
+ grep -E '^[a-z0-9]+=' | sed 's/=.*/=/'
+ )"
+ COMPREPLY=( $(compgen -W "$args" "$cur") )
+ return
+ fi
+ ;;
+ esac
+}
+
+# Install the handler function.
+complete -o default -F _nbdkit nbdkit
--- /dev/null
+# nbdkit
+# Copyright (C) 2013-2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+plugindir = $(libdir)/nbdkit/plugins
+filterdir = $(libdir)/nbdkit/filters
+
+CLEANFILES = *~ *.cmi *.cmx *.cmxa *.so
--- /dev/null
+# nbdkit
+# Copyright (C) 2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+include $(top_srcdir)/common-rules.mk
+
+noinst_LTLIBRARIES = libbitmap.la
+
+libbitmap_la_SOURCES = \
+ bitmap.c \
+ bitmap.h
+libbitmap_la_CPPFLAGS = \
+ -I$(top_srcdir)/include \
+ -I$(top_srcdir)/common/include
+libbitmap_la_CFLAGS = \
+ $(WARNINGS_CFLAGS)
--- /dev/null
+# Makefile.in generated by automake 1.16.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2018 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# nbdkit
+# Copyright (C) 2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+# nbdkit
+# Copyright (C) 2013-2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+ if test -z '$(MAKELEVEL)'; then \
+ false; \
+ elif test -n '$(MAKE_HOST)'; then \
+ true; \
+ elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+ true; \
+ else \
+ false; \
+ fi; \
+}
+am__make_running_with_option = \
+ case $${target_option-} in \
+ ?) ;; \
+ *) echo "am__make_running_with_option: internal error: invalid" \
+ "target option '$${target_option-}' specified" >&2; \
+ exit 1;; \
+ esac; \
+ has_opt=no; \
+ sane_makeflags=$$MAKEFLAGS; \
+ if $(am__is_gnu_make); then \
+ sane_makeflags=$$MFLAGS; \
+ else \
+ case $$MAKEFLAGS in \
+ *\\[\ \ ]*) \
+ bs=\\; \
+ sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+ | sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \
+ esac; \
+ fi; \
+ skip_next=no; \
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+ case $$dist_files in \
+ */*) $(MKDIR_P) `echo "$$dist_files" | \
+ sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+ sort -u` ;; \
+ esac; \
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+ if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+ || exit 1; \
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+check-am: all-am
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+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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+ fi
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+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <nbdkit-plugin.h>
+
+#include "bitmap.h"
+#include "rounding.h"
+
+int
+bitmap_resize (struct bitmap *bm, uint64_t new_size)
+{
+ uint8_t *new_bitmap;
+ const size_t old_bm_size = bm->size;
+ uint64_t new_bm_size_u64;
+ size_t new_bm_size;
+
+ new_bm_size_u64 = DIV_ROUND_UP (new_size,
+ bm->blksize * UINT64_C(8) / bm->bpb);
+ if (new_bm_size_u64 > SIZE_MAX) {
+ nbdkit_error ("bitmap too large for this architecture");
+ return -1;
+ }
+ new_bm_size = (size_t) new_bm_size_u64;
+
+ new_bitmap = realloc (bm->bitmap, new_bm_size);
+ if (new_bitmap == NULL) {
+ nbdkit_error ("realloc: %m");
+ return -1;
+ }
+ bm->bitmap = new_bitmap;
+ bm->size = new_bm_size;
+ if (old_bm_size < new_bm_size)
+ memset (&bm->bitmap[old_bm_size], 0, new_bm_size-old_bm_size);
+
+ nbdkit_debug ("bitmap resized to %zu bytes", new_bm_size);
+
+ return 0;
+}
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* This is a very simple structure for creating a bitmap associated
+ * with a virtual disk. 1, 2, 4 or 8 bits can be associated with each
+ * block of the disk. You can choose the number of bits and block
+ * size when creating the bitmap. Entries in the bitmap are
+ * initialized to 0.
+ */
+
+#ifndef NBDKIT_BITMAP_H
+#define NBDKIT_BITMAP_H
+
+#include <stdint.h>
+#include <assert.h>
+
+#include "ispowerof2.h"
+
+/* This is the bitmap structure. */
+struct bitmap {
+ unsigned blksize; /* Block size. */
+ uint8_t bpb; /* Bits per block (1, 2, 4, 8 only). */
+ /* bpb = 1 << bitshift ibpb = 8 / bpb
+ 1 0 8
+ 2 1 4
+ 4 2 2
+ 8 3 1
+ */
+ uint8_t bitshift, ibpb;
+
+ uint8_t *bitmap; /* The bitmap. */
+ size_t size; /* Size of bitmap in bytes. */
+};
+
+static inline void
+bitmap_init (struct bitmap *bm, unsigned blksize, unsigned bpb)
+{
+ assert (is_power_of_2 (blksize));
+ bm->blksize = blksize;
+
+ /* bpb can be 1, 2, 4 or 8 only. */
+ bm->bpb = bpb;
+ switch (bpb) {
+ case 1: bm->bitshift = 0; break;
+ case 2: bm->bitshift = 1; break;
+ case 4: bm->bitshift = 2; break;
+ case 8: bm->bitshift = 3; break;
+ default: abort ();
+ }
+ bm->ibpb = 8/bpb;
+
+ bm->bitmap = NULL;
+ bm->size = 0;
+}
+
+/* Only frees the bitmap itself, since it is assumed that the struct
+ * bitmap is statically allocated.
+ */
+static inline void
+bitmap_free (struct bitmap *bm)
+{
+ if (bm)
+ free (bm->bitmap);
+}
+
+/* Resize the bitmap to the virtual disk size in bytes.
+ * Returns -1 on error, setting nbdkit_error.
+ */
+extern int bitmap_resize (struct bitmap *bm, uint64_t new_size);
+
+/* This macro calculates the byte offset in the bitmap and which
+ * bit/mask we are addressing within that byte.
+ *
+ * bpb blk_offset blk_bit mask
+ * 1 blk >> 3 0,1,2,...,7 any single bit
+ * 2 blk >> 2 0, 2, 4 or 6 0x03, 0x0c, 0x30 or 0xc0
+ * 4 blk >> 1 0 or 4 0x0f or 0xf0
+ * 8 blk >> 0 always 0 always 0xff
+ */
+#define BITMAP_OFFSET_BIT_MASK(bm, blk) \
+ uint64_t blk_offset = (blk) >> (3 - (bm)->bitshift); \
+ unsigned blk_bit = (bm)->bpb * ((blk) & ((bm)->ibpb - 1)); \
+ unsigned mask = ((1 << (bm)->bpb) - 1) << blk_bit
+
+/* Return the bit(s) associated with the given block.
+ * If the request is out of range, returns the default value.
+ */
+static inline unsigned
+bitmap_get_blk (const struct bitmap *bm, uint64_t blk, unsigned default_)
+{
+ BITMAP_OFFSET_BIT_MASK (bm, blk);
+
+ if (blk_offset >= bm->size) {
+ nbdkit_debug ("bitmap_get: block number is out of range");
+ return default_;
+ }
+
+ return (bm->bitmap[blk_offset] & mask) >> blk_bit;
+}
+
+/* As above but works with virtual disk offset in bytes. */
+static inline unsigned
+bitmap_get (const struct bitmap *bm, uint64_t offset, unsigned default_)
+{
+ return bitmap_get_blk (bm, offset / bm->blksize, default_);
+}
+
+/* Set the bit(s) associated with the given block.
+ * If out of range, it is ignored.
+ */
+static inline void
+bitmap_set_blk (const struct bitmap *bm, uint64_t blk, unsigned v)
+{
+ BITMAP_OFFSET_BIT_MASK (bm, blk);
+
+ if (blk_offset >= bm->size) {
+ nbdkit_debug ("bitmap_set: block number is out of range");
+ return;
+ }
+
+ bm->bitmap[blk_offset] &= ~mask;
+ bm->bitmap[blk_offset] |= v << blk_bit;
+}
+
+/* As above bit works with virtual disk offset in bytes. */
+static inline void
+bitmap_set (const struct bitmap *bm, uint64_t offset, unsigned v)
+{
+ return bitmap_set_blk (bm, offset / bm->blksize, v);
+}
+
+/* Iterate over blocks represented in the bitmap. */
+#define bitmap_for(bm, /* uint64_t */ blknum) \
+ for ((blknum) = 0; (blknum) < (bm)->size * (bm)->ibpb; ++(blknum))
+
+#endif /* NBDKIT_BITMAP_H */
--- /dev/null
+# nbdkit
+# Copyright (C) 2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+include $(top_srcdir)/common-rules.mk
+
+# These headers contain only common code shared by the core server,
+# plugins and/or filters. They are not installed.
+EXTRA_DIST = \
+ byte-swapping.h \
+ exit-with-parent.h \
+ get-current-dir-name.h \
+ isaligned.h \
+ ispowerof2.h \
+ iszero.h \
+ rounding.h
--- /dev/null
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+# @configure_input@
+
+# Copyright (C) 1994-2018 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# nbdkit
+# Copyright (C) 2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+# nbdkit
+# Copyright (C) 2013-2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
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+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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+DLLTOOL = @DLLTOOL@
+DL_LDFLAGS = @DL_LDFLAGS@
+DL_LIBS = @DL_LIBS@
+DSYMUTIL = @DSYMUTIL@
+DUMPBIN = @DUMPBIN@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
+ECHO_T = @ECHO_T@
+EGREP = @EGREP@
+EXEEXT = @EXEEXT@
+EXT2FS_CFLAGS = @EXT2FS_CFLAGS@
+EXT2FS_LIBS = @EXT2FS_LIBS@
+FGREP = @FGREP@
+GENISOIMAGE = @GENISOIMAGE@
+GNUTLS_CFLAGS = @GNUTLS_CFLAGS@
+GNUTLS_LIBS = @GNUTLS_LIBS@
+GREP = @GREP@
+GUESTFISH = @GUESTFISH@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+ISOPROG = @ISOPROG@
+LD = @LD@
+LDFLAGS = @LDFLAGS@
+LIBGUESTFS_CFLAGS = @LIBGUESTFS_CFLAGS@
+LIBGUESTFS_LIBS = @LIBGUESTFS_LIBS@
+LIBLZMA_CFLAGS = @LIBLZMA_CFLAGS@
+LIBLZMA_LIBS = @LIBLZMA_LIBS@
+LIBOBJS = @LIBOBJS@
+LIBS = @LIBS@
+LIBTOOL = @LIBTOOL@
+LIBVIRT_CFLAGS = @LIBVIRT_CFLAGS@
+LIBVIRT_LIBS = @LIBVIRT_LIBS@
+LIPO = @LIPO@
+LN_S = @LN_S@
+LTLIBOBJS = @LTLIBOBJS@
+LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@
+LUA_CFLAGS = @LUA_CFLAGS@
+LUA_LIBS = @LUA_LIBS@
+MAKEINFO = @MAKEINFO@
+MANIFEST_TOOL = @MANIFEST_TOOL@
+MKDIR_P = @MKDIR_P@
+MKISOFS = @MKISOFS@
+NM = @NM@
+NMEDIT = @NMEDIT@
+OBJDUMP = @OBJDUMP@
+OBJEXT = @OBJEXT@
+OCAML = @OCAML@
+OCAMLBEST = @OCAMLBEST@
+OCAMLBUILD = @OCAMLBUILD@
+OCAMLC = @OCAMLC@
+OCAMLCDOTOPT = @OCAMLCDOTOPT@
+OCAMLDEP = @OCAMLDEP@
+OCAMLDOC = @OCAMLDOC@
+OCAMLLIB = @OCAMLLIB@
+OCAMLMKLIB = @OCAMLMKLIB@
+OCAMLMKTOP = @OCAMLMKTOP@
+OCAMLOPT = @OCAMLOPT@
+OCAMLOPTDOTOPT = @OCAMLOPTDOTOPT@
+OCAMLOPTFLAGS = @OCAMLOPTFLAGS@
+OCAMLVERSION = @OCAMLVERSION@
+OTOOL = @OTOOL@
+OTOOL64 = @OTOOL64@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PERL = @PERL@
+PERL_ARCHLIB = @PERL_ARCHLIB@
+PERL_CFLAGS = @PERL_CFLAGS@
+PERL_LDOPTS = @PERL_LDOPTS@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PODWRAPPER = @PODWRAPPER@
+PTHREAD_CC = @PTHREAD_CC@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+PTHREAD_LIBS = @PTHREAD_LIBS@
+PYTHON = @PYTHON@
+PYTHON_CFLAGS = @PYTHON_CFLAGS@
+PYTHON_LDFLAGS = @PYTHON_LDFLAGS@
+PYTHON_LIBS = @PYTHON_LIBS@
+PYTHON_VERSION = @PYTHON_VERSION@
+RANLIB = @RANLIB@
+RUBY = @RUBY@
+RUBY_CFLAGS = @RUBY_CFLAGS@
+RUBY_LIBS = @RUBY_LIBS@
+SED = @SED@
+SEQ = @SEQ@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+STRIP = @STRIP@
+TCL_CFLAGS = @TCL_CFLAGS@
+TCL_LIBS = @TCL_LIBS@
+VALGRIND = @VALGRIND@
+VALGRIND_CFLAGS = @VALGRIND_CFLAGS@
+VALGRIND_LIBS = @VALGRIND_LIBS@
+VERSION = @VERSION@
+WARNINGS_CFLAGS = @WARNINGS_CFLAGS@
+ZLIB_CFLAGS = @ZLIB_CFLAGS@
+ZLIB_LIBS = @ZLIB_LIBS@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_AR = @ac_ct_AR@
+ac_ct_CC = @ac_ct_CC@
+ac_ct_CXX = @ac_ct_CXX@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+ax_pthread_config = @ax_pthread_config@
+bashcompdir = @bashcompdir@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+filters = @filters@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+lang_plugins = @lang_plugins@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+non_lang_plugins = @non_lang_plugins@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+plugins = @plugins@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+plugindir = $(libdir)/nbdkit/plugins
+filterdir = $(libdir)/nbdkit/filters
+CLEANFILES = *~ *.cmi *.cmx *.cmxa *.so
+
+# These headers contain only common code shared by the core server,
+# plugins and/or filters. They are not installed.
+EXTRA_DIST = \
+ byte-swapping.h \
+ exit-with-parent.h \
+ get-current-dir-name.h \
+ isaligned.h \
+ ispowerof2.h \
+ iszero.h \
+ rounding.h
+
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in: $(srcdir)/Makefile.am $(top_srcdir)/common-rules.mk $(am__configure_deps)
+ @for dep in $?; do \
+ case '$(am__configure_deps)' in \
+ *$$dep*) \
+ ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+ && { if test -f $@; then exit 0; else break; fi; }; \
+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign common/include/Makefile'; \
+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --foreign common/include/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ @case '$?' in \
+ *config.status*) \
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+ *) \
+ echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+ cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+ esac;
+$(top_srcdir)/common-rules.mk $(am__empty):
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: $(am__configure_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): $(am__aclocal_m4_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+mostlyclean-libtool:
+ -rm -f *.lo
+
+clean-libtool:
+ -rm -rf .libs _libs
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(BUILT_SOURCES)
+ $(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+ @srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+ topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+ list='$(DISTFILES)'; \
+ dist_files=`for file in $$list; do echo $$file; done | \
+ sed -e "s|^$$srcdirstrip/||;t" \
+ -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+ case $$dist_files in \
+ */*) $(MKDIR_P) `echo "$$dist_files" | \
+ sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+ sort -u` ;; \
+ esac; \
+ for file in $$dist_files; do \
+ if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+ if test -d $$d/$$file; then \
+ dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+ if test -d "$(distdir)/$$file"; then \
+ find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+ fi; \
+ if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+ cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+ find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+ fi; \
+ cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+ else \
+ test -f "$(distdir)/$$file" \
+ || cp -p $$d/$$file "$(distdir)/$$file" \
+ || exit 1; \
+ fi; \
+ done
+check-am: all-am
+check: check-am
+all-am: Makefile
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+ @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+ if test -z '$(STRIP)'; then \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ install; \
+ else \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+ fi
+mostlyclean-generic:
+
+clean-generic:
+ -test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-am
+ -rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+ -rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic clean-libtool \
+ cscopelist-am ctags-am distclean distclean-generic \
+ distclean-libtool distdir dvi dvi-am html html-am info info-am \
+ install install-am install-data install-data-am install-dvi \
+ install-dvi-am install-exec install-exec-am install-html \
+ install-html-am install-info install-info-am install-man \
+ install-pdf install-pdf-am install-ps install-ps-am \
+ install-strip installcheck installcheck-am installdirs \
+ maintainer-clean maintainer-clean-generic mostlyclean \
+ mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+ tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2013-2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* The job of this header is to define macros (or functions) called
+ * things like 'htobe32' and 'le64toh' which byte swap N-bit integers
+ * between host representation, and little and big endian. The core
+ * code and plugins in nbdkit uses these names and relies on this
+ * header to provide the platform-specific implementation. On Linux
+ * these are defined in <endian.h> but other platforms have other
+ * requirements.
+ */
+
+#ifndef NBDKIT_BYTE_SWAPPING_H
+#define NBDKIT_BYTE_SWAPPING_H
+
+#ifdef __HAIKU__
+#define _BSD_SOURCE
+#endif
+
+#ifdef HAVE_BYTESWAP_H
+#include <byteswap.h>
+#endif
+
+#ifdef HAVE_ENDIAN_H
+#include <endian.h>
+#endif
+
+#ifdef HAVE_SYS_ENDIAN_H
+#include <sys/endian.h>
+#endif
+
+#ifndef htobe32
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+# define htobe16(x) __bswap_16 (x)
+# define htole16(x) (x)
+# define be16toh(x) __bswap_16 (x)
+# define le16toh(x) (x)
+
+# define htobe32(x) __bswap_32 (x)
+# define htole32(x) (x)
+# define be32toh(x) __bswap_32 (x)
+# define le32toh(x) (x)
+
+# define htobe64(x) __bswap_64 (x)
+# define htole64(x) (x)
+# define be64toh(x) __bswap_64 (x)
+# define le64toh(x) (x)
+
+# else
+# define htobe16(x) (x)
+# define htole16(x) __bswap_16 (x)
+# define be16toh(x) (x)
+# define le16toh(x) __bswap_16 (x)
+
+# define htobe32(x) (x)
+# define htole32(x) __bswap_32 (x)
+# define be32toh(x) (x)
+# define le32toh(x) __bswap_32 (x)
+
+# define htobe64(x) (x)
+# define htole64(x) __bswap_64 (x)
+# define be64toh(x) (x)
+# define le64toh(x) __bswap_64 (x)
+# endif
+#endif
+
+#endif /* NBDKIT_BYTE_SWAPPING_H */
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2013-2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* Implement the --exit-with-parent feature on operating systems which
+ * support it.
+ */
+
+#ifndef NBDKIT_EXIT_WITH_PARENT_H
+#define NBDKIT_EXIT_WITH_PARENT_H
+
+#include <config.h>
+
+#include <signal.h>
+
+#ifdef HAVE_SYS_PRCTL_H
+#include <sys/prctl.h>
+#endif
+
+#ifdef HAVE_SYS_PROCCTL_H
+#include <sys/procctl.h>
+#endif
+
+#if defined(HAVE_SYS_PRCTL_H) && defined(PR_SET_PDEATHSIG)
+
+/* For Linux >= 2.1.57. */
+
+static inline int
+set_exit_with_parent (void)
+{
+ return prctl (PR_SET_PDEATHSIG, SIGTERM);
+}
+
+#define HAVE_EXIT_WITH_PARENT 1
+
+#elif defined(HAVE_SYS_PROCCTL_H) && defined(PROC_PDEATHSIG_CTL)
+
+/* For FreeBSD >= 11.2 */
+
+static inline int
+set_exit_with_parent (void)
+{
+ const int sig = SIGTERM;
+ return procctl (P_PID, 0, PROC_PDEATHSIG_CTL, (void*) &sig);
+}
+
+#define HAVE_EXIT_WITH_PARENT 1
+
+#endif
+
+#endif /* NBDKIT_INTERNAL_H */
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* Implement get_current_dir_name(3) on platforms which don't have it. */
+
+#ifndef NBDKIT_GET_CURRENT_DIR_NAME_H
+#define NBDKIT_GET_CURRENT_DIR_NAME_H
+
+#include <config.h>
+
+#ifndef HAVE_GET_CURRENT_DIR_NAME
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <limits.h>
+
+static inline char *
+get_current_dir_name (void)
+{
+ char *ret;
+
+ ret = malloc (PATH_MAX);
+ if (ret == NULL)
+ return NULL;
+ ret = getcwd (ret, PATH_MAX);
+ if (ret == NULL)
+ return NULL;
+ return realloc (ret, strlen (ret) + 1);
+}
+#endif
+
+#endif /* NBDKIT_GET_CURRENT_DIR_NAME_H */
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef NBDKIT_ISALIGNED_H
+#define NBDKIT_ISALIGNED_H
+
+#include <assert.h>
+
+#include "ispowerof2.h"
+
+/* Return true if size is a multiple of align. align must be power of 2.
+ */
+#define IS_ALIGNED(size, align) ({ \
+ assert (is_power_of_2 ((align))); \
+ !((size) & ((align) - 1)); \
+})
+
+#endif /* NBDKIT_ISALIGNED_H */
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef NBDKIT_ISPOWEROF2_H
+#define NBDKIT_ISPOWEROF2_H
+
+#include <stdbool.h>
+
+/* Returns true if v is a power of 2.
+ *
+ * Uses the algorithm described at
+ * http://graphics.stanford.edu/~seander/bithacks.html#DetermineIfPowerOf2
+ */
+static inline bool
+is_power_of_2 (unsigned long v)
+{
+ return v && ((v & (v - 1)) == 0);
+}
+
+#endif /* NBDKIT_ISPOWEROF2_H */
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef NBDKIT_ISZERO_H
+#define NBDKIT_ISZERO_H
+
+#include <string.h>
+#include <stdbool.h>
+
+/* Return true iff the buffer is all zero bytes.
+ *
+ * The clever approach here was suggested by Eric Blake. See:
+ * https://www.redhat.com/archives/libguestfs/2017-April/msg00171.html
+ * https://rusty.ozlabs.org/?p=560
+ */
+static inline bool
+is_zero (const char *buffer, size_t size)
+{
+ size_t i;
+ const size_t limit = size < 16 ? size : 16;
+
+ for (i = 0; i < limit; ++i)
+ if (buffer[i])
+ return false;
+ if (size != limit)
+ return ! memcmp (buffer, buffer + 16, size - 16);
+
+ return true;
+}
+
+#endif /* NBDKIT_ISZERO_H */
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef NBDKIT_ROUNDING_H
+#define NBDKIT_ROUNDING_H
+
+#include <assert.h>
+
+#include "ispowerof2.h"
+
+/* Round up i to next multiple of n (n must be a power of 2).
+ */
+#define ROUND_UP(i, n) ({ \
+ assert (is_power_of_2 (n)); \
+ ((i) + (n) - 1) & -((typeof (i))(n)); \
+})
+
+/* Round down i to next multiple of n (n must be a power of 2).
+ */
+#define ROUND_DOWN(i, n) ({ \
+ assert (is_power_of_2 (n)); \
+ (i) & -((typeof (i))(n)); \
+})
+
+/* Return n / d, rounding the result up to the next integer. */
+#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+
+#endif /* NBDKIT_ROUNDING_H */
--- /dev/null
+# nbdkit
+# Copyright (C) 2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+include $(top_srcdir)/common-rules.mk
+
+noinst_LTLIBRARIES = libregions.la
+
+libregions_la_SOURCES = \
+ regions.c \
+ regions.h
+libregions_la_CPPFLAGS = \
+ -I$(top_srcdir)/include \
+ -I$(top_srcdir)/common/include
+libregions_la_CFLAGS = \
+ $(WARNINGS_CFLAGS)
--- /dev/null
+# Makefile.in generated by automake 1.16.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2018 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# nbdkit
+# Copyright (C) 2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+# nbdkit
+# Copyright (C) 2013-2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
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+ else \
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+ fi; \
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+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <assert.h>
+
+#include <nbdkit-plugin.h>
+
+#include "regions.h"
+
+void
+init_regions (struct regions *regions)
+{
+ regions->regions = NULL;
+ regions->nr_regions = 0;
+}
+
+void
+free_regions (struct regions *regions)
+{
+ /* We don't need to free the data since that is not owned by the
+ * regions structure.
+ */
+ free (regions->regions);
+}
+
+/* Find the region corresponding to the given offset. Use region->end
+ * to find the end of the region.
+ */
+static int
+compare_offset (const void *offsetp, const void *regionp)
+{
+ const uint64_t offset = *(uint64_t *)offsetp;
+ const struct region *region = (struct region *)regionp;
+
+ if (offset < region->start) return -1;
+ if (offset > region->end) return 1;
+ return 0;
+}
+
+const struct region *
+find_region (const struct regions *regions, uint64_t offset)
+{
+ return bsearch (&offset, regions->regions, regions->nr_regions,
+ sizeof (struct region), compare_offset);
+}
+
+int
+append_region (struct regions *regions, struct region region)
+{
+ struct region *p;
+
+ /* The assertions in this function are meant to maintain the
+ * invariant about the array as described at the top of this file.
+ */
+ assert (region.start == virtual_size (regions));
+ assert (region.len > 0);
+ assert (region.end >= region.start);
+ assert (region.len == region.end - region.start + 1);
+
+ p = realloc (regions->regions,
+ (regions->nr_regions+1) * sizeof (struct region));
+ if (p == NULL) {
+ nbdkit_error ("realloc: %m");
+ return -1;
+ }
+ regions->regions = p;
+ regions->regions[regions->nr_regions] = region;
+ regions->nr_regions++;
+
+ return 0;
+}
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef NBDKIT_REGIONS_H
+#define NBDKIT_REGIONS_H
+
+#include <stdint.h>
+#include <assert.h>
+
+/* This defines a very simple structure used to define the virtual
+ * disk in the partitioning and floppy plugins.
+ *
+ * We split the virtual disk into non-overlapping, contiguous regions.
+ * These are stored in an array, ordered by address.
+ *
+ * Each region can be one of several types, referring to a backing
+ * file, some data stored in memory, or zero padding.
+ */
+
+/* Region type. */
+enum region_type {
+ region_file, /* contents of the i'th file */
+ region_data, /* pointer to in-memory data */
+ region_zero, /* padding */
+};
+
+/* Region. */
+struct region {
+ uint64_t start, len, end; /* byte offsets; end = start + len - 1 */
+ enum region_type type;
+ union {
+ size_t i; /* region_file: i'th file */
+ const unsigned char *data; /* region_data: data */
+ } u;
+
+ /* Optional name or description of this region. This is not used by
+ * the regions code but can be added to regions to make debugging
+ * easier.
+ */
+ const char *description;
+};
+
+/* Array of regions. */
+struct regions {
+ struct region *regions;
+ size_t nr_regions;
+};
+
+extern void init_regions (struct regions *regions);
+extern void free_regions (struct regions *regions);
+extern const struct region *find_region (const struct regions *regions, uint64_t offset);
+extern int append_region (struct regions *regions, struct region region);
+
+static inline const struct region *
+get_region (const struct regions *regions, size_t i)
+{
+ assert (i < regions->nr_regions);
+ return ®ions->regions[i];
+}
+
+static inline size_t
+nr_regions (struct regions *regions)
+{
+ return regions->nr_regions;
+}
+
+static inline int64_t
+virtual_size (struct regions *regions)
+{
+ if (regions->nr_regions == 0)
+ return 0;
+ else
+ return regions->regions[regions->nr_regions-1].end + 1;
+}
+
+#endif /* NBDKIT_REGIONS_H */
--- /dev/null
+# nbdkit
+# Copyright (C) 2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2017-2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <nbdkit-plugin.h>
+
+#include "iszero.h"
+#include "sparse.h"
+
+/* Two level directory for the sparse array.
+ *
+ * nbdkit supports disk sizes up to 2⁶³-1. The aim of the sparse
+ * array is to support up to 63 bit images for testing, although it
+ * won't necessarily be efficient for that use. However it should
+ * also be efficient for more reasonable sized disks.
+ *
+ * Although the CPU implements effectively the same kind of data
+ * structure (page tables) there are some advantages of reimplementing
+ * this:
+ *
+ * 1. Support for 32 bit (or even 64 bit since the virtual memory
+ * address space on 64 bit machines is not 63 bits in size).
+ *
+ * 2. In Linux, overcommit defaults prevent use of virtual memory as a
+ * sparse array without intrusive system configuration changes.
+ *
+ * 3. Could choose a page size which is more appropriate for disk
+ * images, plus some architectures have much larger page sizes than
+ * others making behaviour inconsistent across arches.
+ *
+ * To achieve this we use a B-Tree-like structure. The L1 directory
+ * contains an ordered, non-overlapping, non-contiguous list of
+ * (offset, pointer to L2 directory).
+ *
+ * Updating the L1 directory requires a linear scan but that operation
+ * should be very rare. Because the L1 directory is stored in order
+ * of offset, we can use an efficient binary search for lookups.
+ *
+ * Each L1 directory entry can address up to PAGE_SIZE*L2_SIZE bytes
+ * in the virtual disk image. With the current parameters this is
+ * 128MB, which is enough for a 100MB image to fit into a single L1
+ * directory, or a 10GB image to fit into 80 L1 entries. The page
+ * pointers in the L2 directory can be NULL (meaning no page / all
+ * zeroes).
+ *
+ * ┌────────────────────┐
+ * │ L1 directory │ ┌────────────────────┐
+ * │ offset, entry 0 ─────────▶ | L2 directory |
+ * │ offset, entry 1 │ | page 0 ─────────▶ page
+ * │ offset, entry 2 │ │ page 1 ─────────▶ page
+ * │ ... │ │ page 2 ─────────▶ page
+ * └────────────────────┘ │ ... │
+ * │ page L2_SIZE-1 ─────────▶ page
+ * └────────────────────┘
+ */
+#define PAGE_SIZE 32768
+#define L2_SIZE 4096
+
+struct l1_entry {
+ uint64_t offset; /* Virtual offset of this entry. */
+ void **l2_dir; /* Pointer to L2 directory. */
+};
+
+struct sparse_array {
+ struct l1_entry *l1_dir; /* L1 directory. */
+ size_t l1_size; /* Number of entries in L1 directory. */
+ bool debug;
+};
+
+/* Free L1 and/or L2 directories. */
+static void
+free_l2_dir (void **l2_dir)
+{
+ size_t i;
+
+ for (i = 0; i < L2_SIZE; ++i)
+ free (l2_dir[i]);
+ free (l2_dir);
+}
+
+void
+free_sparse_array (struct sparse_array *sa)
+{
+ size_t i;
+
+ for (i = 0; i < sa->l1_size; ++i)
+ free_l2_dir (sa->l1_dir[i].l2_dir);
+ free (sa->l1_dir);
+ free (sa);
+}
+
+struct sparse_array *
+alloc_sparse_array (bool debug)
+{
+ struct sparse_array *sa;
+
+ sa = malloc (sizeof *sa);
+ if (sa == NULL)
+ return NULL;
+ sa->l1_dir = NULL;
+ sa->l1_size = 0;
+ sa->debug = debug;
+ return sa;
+}
+
+/* Comparison function used when searching through the L1 directory. */
+static int
+compare_l1_offsets (const void *offsetp, const void *entryp)
+{
+ const uint64_t offset = *(uint64_t *)offsetp;
+ const struct l1_entry *e = entryp;
+
+ if (offset < e->offset) return -1;
+ if (offset >= e->offset + PAGE_SIZE*L2_SIZE) return 1;
+ return 0;
+}
+
+/* Insert an entry in the L1 directory, keeping it ordered by offset.
+ * This involves an expensive linear scan but should be very rare.
+ */
+static int
+insert_l1_entry (struct sparse_array *sa, const struct l1_entry *entry)
+{
+ size_t i;
+ struct l1_entry *old_l1_dir = sa->l1_dir;
+
+ /* The l1_dir always ends up one bigger, so reallocate it first. */
+ sa->l1_dir = realloc (sa->l1_dir, (sa->l1_size+1) * sizeof (struct l1_entry));
+ if (sa->l1_dir == NULL) {
+ sa->l1_dir = old_l1_dir;
+ nbdkit_error ("realloc");
+ return -1;
+ }
+
+ for (i = 0; i < sa->l1_size; ++i) {
+ if (entry->offset < sa->l1_dir[i].offset) {
+ /* Insert new entry before i'th directory entry. */
+ memmove (&sa->l1_dir[i+1], &sa->l1_dir[i],
+ (sa->l1_size-i) * sizeof (struct l1_entry));
+ sa->l1_dir[i] = *entry;
+ sa->l1_size++;
+ if (sa->debug)
+ nbdkit_debug ("%s: inserted new L1 entry for %" PRIu64
+ " at l1_dir[%zu]",
+ __func__, entry->offset, i);
+ return 0;
+ }
+
+ /* This should never happens since each entry in the the L1
+ * directory is supposed to be unique.
+ */
+ assert (entry->offset != sa->l1_dir[i].offset);
+ }
+
+ /* Insert new entry at the end. */
+ sa->l1_dir[sa->l1_size] = *entry;
+ sa->l1_size++;
+ if (sa->debug)
+ nbdkit_debug ("%s: inserted new L1 entry for %" PRIu64
+ " at end of l1_dir", __func__, entry->offset);
+ return 0;
+}
+
+/* Look up a virtual offset, returning the address of the offset, the
+ * count of bytes to the end of the page, and a pointer to the L2
+ * directory entry containing the page pointer.
+ *
+ * If the create flag is set then a new page and/or directory will be
+ * allocated if necessary. Use this flag when writing.
+ *
+ * NULL may be returned normally if the page is not mapped (meaning it
+ * reads as zero). However if the create flag is set and NULL is
+ * returned, this indicates an error.
+ */
+static void *
+lookup (struct sparse_array *sa, uint64_t offset, bool create,
+ uint32_t *remaining, void ***l2_page)
+{
+ struct l1_entry *entry;
+ void **l2_dir;
+ uint64_t o;
+ void *page;
+ struct l1_entry new_entry;
+
+ *remaining = PAGE_SIZE - (offset & (PAGE_SIZE-1));
+
+ again:
+ /* Search the L1 directory. */
+ entry = bsearch (&offset, sa->l1_dir, sa->l1_size, sizeof (struct l1_entry),
+ compare_l1_offsets);
+
+ if (sa->debug) {
+ if (entry)
+ nbdkit_debug ("%s: search L1 dir: entry found: offset %" PRIu64,
+ __func__, entry->offset);
+ else
+ nbdkit_debug ("%s: search L1 dir: no entry found", __func__);
+ }
+
+ if (entry) {
+ l2_dir = entry->l2_dir;
+
+ /* Which page in the L2 directory? */
+ o = (offset - entry->offset) / PAGE_SIZE;
+ if (l2_page)
+ *l2_page = &l2_dir[o];
+ page = l2_dir[o];
+ if (!page && create) {
+ /* No page allocated. Allocate one if creating. */
+ page = calloc (PAGE_SIZE, 1);
+ if (page == NULL) {
+ nbdkit_error ("calloc");
+ return NULL;
+ }
+ l2_dir[o] = page;
+ }
+ if (!page)
+ return NULL;
+ else
+ return page + (offset & (PAGE_SIZE-1));
+ }
+
+ /* No L1 directory entry found. */
+ if (!create)
+ return NULL;
+
+ /* No L1 directory entry, and we're creating, so we need to allocate
+ * a new L1 directory entry and insert it in the L1 directory, and
+ * allocate the L2 directory with NULL page pointers. Then we can
+ * repeat the above search to create the page.
+ */
+ new_entry.offset = offset & ~(PAGE_SIZE*L2_SIZE-1);
+ new_entry.l2_dir = calloc (L2_SIZE, sizeof (void *));
+ if (new_entry.l2_dir == NULL) {
+ nbdkit_error ("calloc");
+ return NULL;
+ }
+ if (insert_l1_entry (sa, &new_entry) == -1) {
+ free (new_entry.l2_dir);
+ return NULL;
+ }
+ goto again;
+}
+
+void
+sparse_array_read (struct sparse_array *sa,
+ void *buf, uint32_t count, uint64_t offset)
+{
+ uint32_t n;
+ void *p;
+
+ while (count > 0) {
+ p = lookup (sa, offset, false, &n, NULL);
+ if (n > count)
+ n = count;
+
+ if (p == NULL)
+ memset (buf, 0, n);
+ else
+ memcpy (buf, p, n);
+
+ buf += n;
+ count -= n;
+ offset += n;
+ }
+}
+
+int
+sparse_array_write (struct sparse_array *sa,
+ const void *buf, uint32_t count, uint64_t offset)
+{
+ uint32_t n;
+ void *p;
+
+ while (count > 0) {
+ p = lookup (sa, offset, true, &n, NULL);
+ if (p == NULL)
+ return -1;
+
+ if (n > count)
+ n = count;
+ memcpy (p, buf, n);
+
+ buf += n;
+ count -= n;
+ offset += n;
+ }
+
+ return 0;
+}
+
+void
+sparse_array_zero (struct sparse_array *sa, uint32_t count, uint64_t offset)
+{
+ uint32_t n;
+ void *p;
+ void **l2_page;
+
+ while (count > 0) {
+ p = lookup (sa, offset, false, &n, &l2_page);
+ if (n > count)
+ n = count;
+
+ if (p) {
+ memset (p, 0, n);
+
+ /* If the whole page is now zero, free it. */
+ if (is_zero (*l2_page, PAGE_SIZE)) {
+ if (sa->debug)
+ nbdkit_debug ("%s: freeing zero page at offset %" PRIu64,
+ __func__, offset);
+ free (*l2_page);
+ *l2_page = NULL;
+ }
+ }
+
+ count -= n;
+ offset += n;
+ }
+}
--- /dev/null
+/* nbdkit
+ * Copyright (C) 2017-2018 Red Hat Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of Red Hat nor the names of its contributors may be
+ * used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef NBDKIT_SPARSE_H
+#def
projects / nbdkit.git / commitdiff