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Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
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Eric Blake 51c8216594 build: fix build on RHEL 5 
On RHEL 5, compilation fails with:

storage/storage_backend.c: In function 'createRawFile':
storage/storage_backend.c:339: warning: implicit declaration of function 'fallocate'
storage/storage_backend.c:339: warning: nested extern declaration of 'fallocate' [-Wnested-externs]

But:

$ grep HAVE_FALLOCATE config.h
/* #undef HAVE_FALLOCATE */

Huh? It turns out that in kernels that old, fallocate() is not
implemented (config.h is correct), but <linux/fs.h> defines
HAVE_FALLOCATE as an empty witness macro for a completely
different purpose.  Since storage_backend.c is including
<linux/fs.h> on RHEL 5, we are hosed by the kernel definition.
Newer kernels no longer pollute the namespace, and it's fairly
easy to convert to an expression that works with both the old
kernel witness and the new-style config.h (undefined or 1).

Problem introduced in commit 532fef3.

* src/storage/storage_backend.c (createRawFile): Avoid namespace
pollution from kernel, by checking HAVE_FALLOCATE for a value.

Signed-off-by: Eric Blake <eblake@redhat.com>
2013-10-04 17:33:37 -06:00
.gnulib@4a5ee89c8a maint: update to latest gnulib 2013-09-24 06:53:07 -06:00
build-aux Add API for calling systemd-machined's DBus API 2013-07-22 13:09:58 +01:00
daemon Fix max stream packet size for old clients 2013-09-30 19:01:23 +01:00
docs docs: aclpolkit: Fix a heading typo 2013-10-04 13:38:57 -04:00
examples build: only install nwfilter examples when building nwfilter 2013-09-04 13:48:27 -06:00
gnulib build: enforce makefile conditional style 2013-09-04 09:40:20 -06:00
include libvirt: add new public API virConnectGetCPUModelNames 2013-09-23 15:41:50 -06:00
m4 maint: update to latest gnulib 2013-09-24 06:53:07 -06:00
po Avoid reporting an error if veth device is already deleted 2013-10-03 11:28:06 +01:00
python python: Document virNodeGetInfo bug 2013-09-30 11:42:52 +02:00
src build: fix build on RHEL 5 2013-10-04 17:33:37 -06:00
tests build: fix build --without-remote 2013-10-04 17:01:47 -06:00
tools Fix handling of IPv6 listen addresses in cmdDomDisplay 2013-10-01 14:45:20 +02:00
.ctags maint: Make ctags work out of the box 2013-07-18 08:47:21 +02:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore tests: Introduce qemucapabilitiestest 2013-10-01 11:13:36 +02:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap Autogenerate AUTHORS 2012-10-19 12:44:56 -04:00
AUTHORS.in Add John Ferlan to the committers list 2013-02-05 10:59:32 -05:00
autobuild.sh build: make autobuild require rpm build deps 2013-09-16 09:35:05 -06:00
autogen.sh autogen.sh: Correctly detect .git as a file 2013-08-29 13:19:45 +02:00
bootstrap maint: update to latest gnulib 2013-09-24 06:53:07 -06:00
bootstrap.conf maint: avoid bootstrap warning 2013-08-15 16:54:06 -06:00
cfg.mk Add test case for virNetServerClient object identity code 2013-09-24 09:37:26 +01:00
ChangeLog-old docs, comments: minor typo fixes 2013-09-10 17:06:41 -06:00
configure.ac build: fix build --without-remote 2013-10-04 17:01:47 -06:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
HACKING docs: mention VIR_TEST_RANGE 2013-08-12 20:44:41 -06:00
libvirt.pc.in Add missing 'libvirt_lxc_api' variable in pkg-config file 2013-09-04 14:52:40 +01:00
libvirt.spec.in Release of libvirt-1.1.3 2013-10-01 15:04:14 +08:00
Makefile.am build: ensure 'make check' sees up-to-date config.h 2013-09-23 15:18:24 -06:00
Makefile.nonreentrant maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
mingw-libvirt.spec.in build: add configure option to disable gnulib tests 2013-08-12 10:02:38 -06:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
README-hacking maint: relax git minimum version 2010-02-24 14:29:27 -05:00
run.in run: license as LGPL 2013-02-23 14:03:19 -07:00
TODO Update todo list file to point at bugzilla/website 2010-10-13 16:45:26 +01:00

README 

         LibVirt : simple API for virtualization

  Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.

Daniel Veillard <veillard@redhat.com>