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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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Chris Lalancette d62f4c36c2 Don't use virFileReadLimFD in qemuDomainRestore. 
virFileReadLimFD is a poor fit for reading the header
of the restore file.  The problem is that virFileReadLimFD
returns an error when there is more data after the amount
you ask to read, but that is *expected* in this case.

This patch is essentially a revert of
1a4d5c9543, but I don't think
that commit does what it says anyway.  It purports to prevent
an unwarranted OOM error, but since virFileReadLimFD will
allocate memory up to the maximum anyway, the upper limit
on the total amount of memory allocated is the same for either
the old version or the new version.  Since the old saferead
actually works and virFileReadLimFD does not, revert to
using saferead.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
2010-04-02 09:23:41 -04:00
.gnulib@4f01268d0c build: update gnulib 2010-03-26 19:16:37 +01:00
build-aux build: update gnulib 2010-03-26 19:16:37 +01:00
daemon Keep build quiet for generated file 2010-04-01 12:35:51 +01:00
docs build: more fallout from test -a 2010-03-31 15:18:13 -06:00
examples Distribute nwfilter xml files and add them to rpm 2010-03-31 10:20:22 +02:00
include Keep track of guest paused state after disk IO / watchdog events 2010-04-01 12:35:46 +01:00
m4 build: don't use "test cond1 -o cond2": it's not portable 2010-03-25 09:28:24 +01:00
po maint: mark xenapiSessionErrorHandler messages for translation 2010-03-31 16:30:41 +02:00
proxy Fix linker errors in proxy 2010-03-31 23:21:34 +02:00
python Core driver implementation with ebtables support 2010-03-26 18:01:16 +00:00
src Don't use virFileReadLimFD in qemuDomainRestore. 2010-04-02 09:23:41 -04:00
tests Add virt-aa-helper and secaatest to .gitignore 2010-03-31 13:36:54 +02:00
tools Keep build quiet for generated file 2010-04-01 12:35:51 +01:00
.gitignore maint: sort .gitignore 2010-02-23 21:32:04 +01:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.hgignore Add qemuhelptest to .*ignore files 2009-06-16 14:06:48 +00:00
.x-sc_avoid_ctype_macros exempt gnulib from ctype-macros prohibition 2008-10-28 17:36:31 +00:00
.x-sc_avoid_if_before_free avoid a "make syntax-check" failure 2009-07-09 20:00:37 +02:00
.x-sc_avoid_write Fully asynchronous monitor I/O processing 2009-11-10 13:27:18 +00:00
.x-sc_m4_quote_check syntax-check: enable more checks 2009-02-03 13:08:36 +00:00
.x-sc_prohibit_asprintf add .x-sc_prohibit_asprintf 2008-12-23 13:40:42 +00:00
.x-sc_prohibit_gethostby Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_prohibit_gethostname Add a new syntax-check rule for gethostname. 2009-10-26 10:34:27 +01:00
.x-sc_prohibit_have_config_h maint: sync from coreutils 2009-01-29 18:06:19 +00:00
.x-sc_prohibit_HAVE_MBRTOWC maint: sync from coreutils 2009-01-29 18:06:19 +00:00
.x-sc_prohibit_nonreentrant Tighten up nonreentrant syntax-check. 2009-10-26 10:33:42 +01:00
.x-sc_prohibit_readlink Add a rule to check for uses of readlink. 2010-01-22 09:42:35 -05:00
.x-sc_prohibit_strcmp exempt gnulib/ from "make syntax-check" strcmp prohibition 2008-05-14 21:18:27 +00:00
.x-sc_prohibit_strcmp_and_strncmp Ignore docs/ directory for strcmp() syntax check 2009-11-23 11:58:13 +00:00
.x-sc_prohibit_strncpy Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_prohibit_VIR_ERR_NO_MEMORY Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_require_config_h Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_require_config_h_first Misc syntax-check fixes 2009-09-21 14:41:47 +01:00
.x-sc_trailing_blank build: exempt *.ico files from the trailing blank check 2008-10-16 13:28:07 +00:00
acinclude.m4 maint: show which compiler warning triggered 2010-03-30 11:29:09 -06:00
AUTHORS maint: update AUTHORS 2010-03-31 08:50:42 -06:00
autobuild.sh Enable ESX driver build on Mingw32 2009-07-31 16:15:51 +01:00
autogen.sh build: don't lose prior configure args on autogen.sh 2010-03-26 19:16:37 +01:00
bootstrap maint: relax git minimum version 2010-02-24 14:29:27 -05:00
bootstrap.conf bootstrap: Enable copy-mode for MinGW builds 2010-03-23 02:12:07 +01:00
cfg.mk build: more fallout from test -a 2010-03-31 15:18:13 -06:00
ChangeLog-old generate ChangeLog from git logs into distribution tarball 2009-07-08 16:17:51 +02:00
configure.ac build: more fallout from test -a 2010-03-31 15:18:13 -06:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING doc: fix typos in hacking.html.in; mark HACKING as read-only 2010-03-09 18:18:20 +01:00
libvirt.pc.in * libvirt.pc.in: applied patch from Daniel Berrange to fix --cflags 2006-03-24 13:18:12 +00:00
libvirt.spec.in build: more fallout from test -a 2010-03-31 15:18:13 -06:00
Makefile.am Add some examples filters 2010-03-26 18:01:17 +00:00
Makefile.nonreentrant syntax-check: enable prohibit_nonreentrant 2009-02-05 16:28:41 +00:00
mingw32-libvirt.spec.in Make pki_check.sh into an installed & supported tool 2009-09-21 14:41:46 +01:00
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
TODO Remove all trailing blanks; turn on the rule to detect them. 2008-02-05 19:27:37 +00:00

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>