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d95488dce5
security_context_t happens to be a typedef for char*, and happens to begin with a string usable as a raw context string. But in reality, it is an opaque type that may or may not have additional information after the first NUL byte, where that additional information can include pointers that can only be freed via freecon(). Proof is from this valgrind run of daemon/libvirtd: ==6028== 839,169 (40 direct, 839,129 indirect) bytes in 1 blocks are definitely lost in loss record 274 of 274 ==6028== at 0x4A0515D: malloc (vg_replace_malloc.c:195) ==6028== by 0x3022E0D48C: selabel_open (label.c:165) ==6028== by 0x3022E11646: matchpathcon_init_prefix (matchpathcon.c:296) ==6028== by 0x3022E1190D: matchpathcon (matchpathcon.c:317) ==6028== by 0x4F9D842: SELinuxRestoreSecurityFileLabel (security_selinux.c:382) 800k is a lot of memory to be leaking. * src/storage/storage_backend.c (virStorageBackendUpdateVolTargetInfoFD): Avoid leak on error. * src/security/security_selinux.c (SELinuxReserveSecurityLabel, SELinuxGetSecurityProcessLabel) (SELinuxRestoreSecurityFileLabel): Use correct function to free security_context_t. |
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| .. | ||
| conf | ||
| cpu | ||
| esx | ||
| interface | ||
| lxc | ||
| network | ||
| node_device | ||
| nwfilter | ||
| opennebula | ||
| openvz | ||
| phyp | ||
| qemu | ||
| remote | ||
| secret | ||
| security | ||
| storage | ||
| test | ||
| uml | ||
| util | ||
| vbox | ||
| xen | ||
| xenapi | ||
| .gitignore | ||
| datatypes.c | ||
| datatypes.h | ||
| driver.c | ||
| driver.h | ||
| fdstream.c | ||
| fdstream.h | ||
| gnutls_1_0_compat.h | ||
| internal.h | ||
| libvirt_bridge.syms | ||
| libvirt_daemon.syms | ||
| libvirt_driver_modules.syms | ||
| libvirt_internal.h | ||
| libvirt_linux.syms | ||
| libvirt_macvtap.syms | ||
| libvirt_nwfilter.syms | ||
| libvirt_private.syms | ||
| libvirt_public.syms | ||
| libvirt_qemu.syms | ||
| libvirt-qemu.c | ||
| libvirt.c | ||
| Makefile.am | ||
| nodeinfo.c | ||
| nodeinfo.h | ||
| README | ||
| remote_protocol-structs | ||
libvirt library code README
===========================
The directory provides the bulk of the libvirt codebase. Everything
except for the libvirtd daemon and client tools. The build uses a
large number of libtool convenience libraries - one for each child
directory, and then links them together for the final libvirt.so,
although some bits get linked directly to libvirtd daemon instead.
The files directly in this directory are supporting the public API
entry points & data structures.
There are two core shared modules to be aware of:
* util/ - a collection of shared APIs that can be used by any
code. This directory is always in the include path
for all things built
* conf/ - APIs for parsing / manipulating all the official XML
files used by the public API. This directory is only
in the include path for driver implementation modules
Then there are the hypervisor implementations:
* esx/ - VMware ESX and GSX support using vSphere API over SOAP
* lxc/ - Linux Native Containers
* opennebula/ - Open Nebula using XMLRPC
* openvz/ - OpenVZ containers using cli tools
* phyp/ - IBM Power Hypervisor using CLI tools over SSH
* qemu/ - QEMU / KVM using qemu CLI/monitor
* remote/ - Generic libvirt native RPC client
* test/ - A "mock" driver for testing
* uml/ - User Mode Linux
* vbox/ - Virtual Box using native API
* xen/ - Xen using hypercalls, XenD SEXPR & XenStore
Finally some secondary drivers that are shared for several HVs.
Currently these are used by LXC, OpenVZ, QEMU, UML and Xen drivers.
The ESX, OpenNebula, Power Hypervisor, Remote, Test & VirtualBox
drivers all implement the secondary drivers directly
* interface/ - Host network interface management
* network/ - Virtual NAT networking
* node_device/ - Host device enumeration
* secret/ - Secret management
* security/ - Mandatory access control drivers
* storage/ - Storage management drivers
Since both the hypervisor and secondary drivers can be built as
dlopen()able modules, it is *FORBIDDEN* to have build dependencies
between these directories. Drivers are only allowed to depend on
the public API, and the internal APIs in the util/ and conf/
directories