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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Michal Privoznik 8ae82e676a virFileInData: Report an error if unable to reposition file
The purpose of this function is to tell if the current position
in given FD is in data section or a hole and how much bytes there
is remaining until the end of the section. This is achieved by
couple of lseeks(). The most important part is that we reposition
the FD back, so that the position is unchanged from the caller
POV. And until now the final lseek() back to the original
position was done with no check for errors. And I was convinced
that that's okay since nothing can go wrong. However, review
feedback from a related series persuaded me, that it's better to
be safe than sorry. Therefore, lets check if the final lseek()
succeeded and if it doesn't report an error.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
2017-07-19 09:46:17 +02:00
.gnulib@ce4ee4cbb5 maint: update to latest gnulib 2017-06-14 11:19:18 +01:00
build-aux Revert "Prevent more compiler optimization of mockable functions" 2017-07-13 13:07:06 +01:00
daemon fdstream: Report error from the I/O thread 2017-07-11 08:41:01 +02:00
docs docs: schema: make disk driver name attribute optional 2017-07-18 11:39:52 -06:00
examples apparmor, libvirt-qemu: Allow access to certificates used by libvirt-vnc 2017-06-16 10:38:52 +02:00
gnulib build: drop hack for old mingw ssize_t 2016-07-12 08:57:13 -06:00
include/libvirt virStream*All: Report error if a callback fails 2017-07-11 09:33:12 +02:00
m4 configure: fix typo in nss error message 2017-07-10 10:00:43 +02:00
po qemu: Move qemuGetDriveSourceProps to qemu_block 2017-07-14 16:05:46 +02:00
src virFileInData: Report an error if unable to reposition file 2017-07-19 09:46:17 +02:00
tests tests: enable qemu 2.9 capabilities test for s390 2017-07-18 13:52:48 +02:00
tools wireshark: Adapt to tvb_new_subset() rename 2017-07-18 15:37:38 +02:00
.color_coded.in Add color_coded support 2017-05-09 09:51:11 +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 Add YouCompleteMe support 2017-05-09 09:51:11 +02:00
.gitmodules util: switch over to use keycodemapdb GIT submodule 2017-04-25 21:14:18 +01:00
.mailmap maint: update .mailmap for recent contributions 2015-03-20 06:17:55 -06:00
.travis.yml CI: show the log in case of failure 2017-05-25 08:58:39 +02:00
.ycm_extra_conf.py.in Add YouCompleteMe support 2017-05-09 09:51:11 +02:00
AUTHORS.in Change maintainers list 2016-02-12 13:10:05 +03:00
autogen.sh autogen.sh: Improve and generalize 2017-04-25 09:52:37 +02:00
bootstrap maint: update to latest gnulib 2017-01-10 12:54:54 -06:00
bootstrap.conf hvsupport: use a regex instead of XML::XPath 2016-07-19 18:42:44 +02:00
cfg.mk HACKING: Drop from the git repository 2017-06-26 14:25:54 +02:00
ChangeLog-old Fix typos in src/* 2014-04-21 16:49:08 -06:00
config-post.h Require use of GCC 4.4 or CLang compilers 2017-07-11 13:57:11 +01:00
configure.ac Post-release version bump to 3.6.0 2017-07-05 06:34:08 -04:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: Remove control characters from LGPL license file 2015-09-25 09:16:24 +02:00
libvirt-admin.pc.in Add libvirt-admin library 2015-06-16 13:46:20 +02:00
libvirt-lxc.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt-qemu.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.spec.in spec: Use HTTPS instead of HTTP 2017-05-11 18:35:45 +02:00
Makefile.am HACKING: Drop from the git repository 2017-06-26 14:25:54 +02:00
Makefile.nonreentrant cfg.mk: use a single regex for all non-reentrant functions 2016-06-15 15:00:56 +02:00
mingw-libvirt.spec.in spec: Use HTTPS instead of HTTP 2017-05-11 18:35:45 +02:00
README Provide a useful README file 2017-05-22 17:01:37 +01:00
README-hacking HACKING: Drop from the git repository 2017-06-26 14:25:54 +02:00
README.md HACKING: Drop from the git repository 2017-06-26 14:25:54 +02:00
run.in Add PKG_CONFIG_PATH to run.in script. 2014-06-26 14:32:35 +01:00
TODO Update todo list file to point at bugzilla/website 2010-10-13 16:45:26 +01:00

Build Status

Libvirt API for virtualization

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.

For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.

Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.

Further information about the libvirt project can be found on the website:

https://libvirt.org

License

The libvirt C API is distributed under the terms of GNU Lesser General Public License, version 2.1 (or later). Some parts of the code that are not part of the C library may have the more restrictive GNU General Public License, version 2.1 (or later). See the files COPYING.LESSER and COPYING for full license terms & conditions.

Installation

Libvirt uses the GNU Autotools build system, so in general can be built and installed with the usual commands. For example, to build in a manner that is suitable for installing as root, use:

$ ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
$ make
$ sudo make install

While to build & install as an unprivileged user

$ ./configure --prefix=$HOME/usr
$ make
$ make install

The libvirt code relies on a large number of 3rd party libraries. These will be detected during execution of the configure script and a summary printed which lists any missing (optional) dependencies.

Contributing

The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:

https://libvirt.org/contribute.html

Contact

The libvirt project has two primary mailing lists:

Further details on contacting the project are available on the website:

https://libvirt.org/contact.html