2d9b8acf58
Previous patch had to add '/sys/kernel/' prefix in opendir() because the path, which is being mocked, wasn't being considered due to an 'if SYSFS_PCI_PREFIX' guarding the call to getrealpath(). In fact, all current getrealpath() callers are guarding it with a conditional to ensure that the function will never be called with a non-mocked path. In this case, an extra non-NULL verification is needed for the 'newpath' string to use the variable - which is counterintuitive, given that getrealpath() will always write the 'newpath' string in any non-error conditon. However, simply removing the guard of all getrealpath() instances causes an abort in init_env(). This happens because tests will execute access() to non-mocked paths even before the LIBVIRT_FAKE_ROOT_DIR variable is declared in the test files. We don't need 'fakerootdir' to be created at this point though. This patch does the following changes to simplify getrealpath() usage: - getrealpath() will now guard the init_env() call by checking if both fakeroot isn't created and the required path is being mocked. This ensures that we're not failing inside init_env() because we're too early and LIBVIRT_FAKE_ROOT_DIR wasn't defined yet; - remove all conditional guards to call getrealpath() from access(), virMockStatRedirect(), open(), open_2(), opendir() and virFileCanonicalizePath(). As a bonus, remove all ternary conditionals with 'newpath'; - a new 'pathPrefixIsMocked()' helper to aggregate all the prefixes we're mocking, making it easier to add/remove them. If a prefix is added inside this function, we can be sure that all functions are mocking them. Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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:
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 2.0 (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:
- libvirt-users@redhat.com (for user discussions)
- libvir-list@redhat.com (for development only)
Further details on contacting the project are available on the website: