External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-07-30 21:47:18 +00:00
Code Issues Packages Projects Releases Wiki Activity
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.
13,882 Commits 67 Branches 616 Tags 751 MiB
C 94.8%
Python 2%
Meson 0.9%
Shell 0.8%
Dockerfile 0.7%
Other 0.7%
29fe5d745f
Go to file
Eric Blake 29fe5d745f security_dac: compute supplemental groups before fork 
Commit 75c1256 states that virGetGroupList must not be called
between fork and exec, then commit ee777e99 promptly violated
that for lxc's use of virSecurityManagerSetProcessLabel.  Hoist
the supplemental group detection to the time that the security
manager needs to fork.  Qemu is safe, as it uses
virSecurityManagerSetChildProcessLabel which in turn uses
virCommand to determine supplemental groups.

This does not fix the fact that virSecurityManagerSetProcessLabel
calls virSecurityDACParseIds calls parseIds which eventually
calls getpwnam_r, which also violates fork/exec async-signal-safe
safety rules, but so far no one has complained of hitting
deadlock in that case.

* src/security/security_dac.c (_virSecurityDACData): Track groups
in private data.
(virSecurityDACPreFork): New function, to set them.
(virSecurityDACClose): Clean up new fields.
(virSecurityDACGetIds): Alter signature.
(virSecurityDACSetSecurityHostdevLabelHelper)
(virSecurityDACSetChardevLabel, virSecurityDACSetProcessLabel)
(virSecurityDACSetChildProcessLabel): Update callers.

Signed-off-by: Eric Blake <eblake@redhat.com>
2013-07-18 15:35:30 -06:00
.gnulib@da8d59ee79 maint: update to latest gnulib 2013-07-11 10:33:09 -06:00
build-aux syntax-check: mandate space after mid-line semicolon 2013-05-28 08:26:05 -06:00
daemon Add VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED event 2013-07-18 15:28:45 +02:00
docs Merge virCommandPreserveFD / virCommandTransferFD 2013-07-18 12:18:24 +01:00
examples examples: Handle VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED event 2013-07-18 15:28:45 +02:00
gnulib maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
include Add VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED event 2013-07-18 15:28:45 +02:00
m4 Fix build with clang 2013-07-04 11:35:59 +02:00
po caps: Add helpers to convert NUMA nodes to corresponding CPUs 2013-07-18 14:41:01 +02:00
python Add VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED event 2013-07-18 15:28:45 +02:00
src security_dac: compute supplemental groups before fork 2013-07-18 15:35:30 -06:00
tests tests: split long lines 2013-07-18 10:08:04 -06:00
tools Enable FD passing when starting guests with virsh 2013-07-18 12:07:53 +01:00
.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 qemuhotplugtest 2013-06-25 17:00:56 +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 Set PKG_CONFIG_LIBDIR in autobuild.sh 2013-05-17 17:09:29 +01:00
autogen.sh build: honor autogen.sh --no-git 2013-07-09 16:15:29 -06:00
bootstrap build: honor autogen.sh --no-git 2013-07-09 16:15:29 -06:00
bootstrap.conf util: add virGetGroupList 2013-07-11 15:25:53 -06:00
cfg.mk tests: split long lines 2013-07-18 10:08:04 -06:00
ChangeLog-old virterror.c: Fix several spelling mistakes 2012-02-03 11:32:51 -07:00
configure.ac Use AC_LINK_IFELSE 2013-07-18 23:14:08 +02:00
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 Adapt to VIR_ALLOC and virAsprintf in docs/ 2013-07-10 11:07:31 +02:00
libvirt.pc.in build: silence warning from autoconf 2012-05-30 09:22:02 -06:00
libvirt.spec.in Release of libvirt-1.1.0 2013-07-01 17:22:49 +08:00
Makefile.am maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
Makefile.nonreentrant maint: use LGPL correctly 2013-05-20 14:03:48 -06:00
mingw-libvirt.spec.in conf: add features to volume target XML 2013-06-21 13:25:30 +02:00
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>