Eric Blake [Tue, 21 May 2013 23:47:48 +0000 (17:47 -0600)]
util: add virGetGroupList
Since neither getpwuid_r() nor initgroups() are safe to call in
between fork and exec (they obtain a mutex, but if some other
thread in the parent also held the mutex at the time of the fork,
the child will deadlock), we have to split out the functionality
that is unsafe. At least glibc's initgroups() uses getgrouplist
under the hood, so the ideal split is to expose getgrouplist for
use before a fork. Gnulib already gives us a nice wrapper via
mgetgroups; we wrap it once more to look up by uid instead of name.
* bootstrap.conf (gnulib_modules): Add mgetgroups.
* src/util/virutil.h (virGetGroupList): New declaration.
* src/util/virutil.c (virGetGroupList): New function.
* src/libvirt_private.syms (virutil.h): Export it.
Eric Blake [Tue, 9 Jul 2013 23:57:48 +0000 (17:57 -0600)]
util: improve user lookup helper
A future patch needs to look up pw_gid; but it is wasteful
to crawl through getpwuid_r twice for two separate pieces
of information, and annoying to copy that much boilerplate
code for doing the crawl. The current internal-only
virGetUserEnt is also a rather awkward interface; it's easier
to just design it to let callers request multiple pieces of
data as needed from one traversal.
And while at it, I noticed that virGetXDGDirectory could deref
NULL if the getpwuid_r lookup fails.
* src/util/virutil.c (virGetUserEnt): Alter signature.
(virGetUserDirectory, virGetXDGDirectory, virGetUserName): Adjust
callers.
John Ferlan [Thu, 11 Jul 2013 14:42:30 +0000 (10:42 -0400)]
qemu_hostdev: Resolve Coverity issue
Recent changes uncovered a possibility that 'last_processed_hostdev_vf'
was set to -1 in 'qemuPrepareHostdevPCIDevices' and would cause problems
in for loop end condition in the 'resetvfnetconfig' label if the
variable was never set to 'i' due to 'qemuDomainHostdevNetConfigReplace'
failure.
John Ferlan [Thu, 11 Jul 2013 14:39:23 +0000 (10:39 -0400)]
storage_backend: Resolve Coverity issue
The switch statement in 'virStorageBackendCreateQemuImgOpts' used the
for loop end condition 'VIR_STORAGE_FILE_FEATURE_LAST' as a possible value,
but since that cannot happen Coverity spits out a DEADCODE message. Adding
the Coverity tag just removes the Coverity message
John Ferlan [Thu, 11 Jul 2013 14:33:29 +0000 (10:33 -0400)]
virsh-nodedev: Resolve Coverity issues
Recent changes uncovered FORWARD_NULL and NEGATIVE_RETURNS problems with
the processing of the 'ndevices' and its associated allocated arrays in
'vshNodeDeviceListCollect' due to the possibility of returning -1 in a
call and using the returned value as a for loop index end condition.
John Ferlan [Thu, 11 Jul 2013 14:31:15 +0000 (10:31 -0400)]
virsh-interface: Resolve Coverity issues
Recent changes uncovered FORWARD_NULL and NEGATIVE_RETURNS problems with
the processing of the 'nActiveIfaces' and 'nInactiveIfaces' and their
associated allocated arrays in 'vshInterfaceListCollect' due to the
possibility of returning -1 in a call and using the return value as a
for loop index end condition.
John Ferlan [Thu, 11 Jul 2013 11:22:20 +0000 (07:22 -0400)]
testutils: Resolve Coverity issues
Recent changes uncovered a NEGATIVE_RETURNS in the return from sysconf()
when processing a for loop in virtTestCaptureProgramExecChild() in
testutils.c
Code review uncovered 3 other code paths with the same condition that
weren't found by Covirity, so fixed those as well.
Eric Blake [Thu, 11 Jul 2013 11:07:16 +0000 (05:07 -0600)]
maint: update to latest gnulib
Future patches need LGPLv2+ versions of some modules that had
recent license changes; but separating the gnulib update from
the actual use of the modules makes it easier to backport to
an older version while avoiding a submodule update (assuming,
of course, that the backport is to a system where glibc provides
adequate functionaliy without needing the gnulib module).
* .gnulib: Update to latest, for modules needed in later patches.
Michal Privoznik [Thu, 11 Jul 2013 11:24:20 +0000 (13:24 +0200)]
qemu: Fix hot (un-)plug error codes and messages
With current code, error reporting for unsupported devices for hot plug,
unplug and update is total mess. The VIR_ERR_CONFIG_UNSUPPORTED error
code is reported instead of VIR_ERR_OPERATION_UNSUPPORTED. Moreover, the
error messages are not helping to find the root cause (lack of
implementation).
Michal Privoznik [Thu, 11 Jul 2013 10:18:36 +0000 (12:18 +0200)]
conf: Rework virDomainDeviceDefParse
When adding a new domain device, it is fairly easy to forget to add
corresponding piece into virDomainDeviceDefParse. However, if the
internal structure is changed to one bit switch() the compiler will warn
about not handled enum item.
Michal Privoznik [Thu, 11 Jul 2013 09:20:34 +0000 (11:20 +0200)]
conf: Extend device types handled by virDomainDeviceDefParse
Not all device types are currently parsed in virDomainDeviceDefParse,
Since all needed functions do exist, nothing holds us back to make the
implementation complete. Similarly, the virDomainDeviceDefFree needs to
be updated as well.
For low-memory domains (roughly under 400MB) our automatic memory limit
computation comes up with a limit that's too low. This is because the
0.5 multiplication does not add enough for such small values. Let's
increase the constant part of the computation to fix this.
Laine Stump [Thu, 11 Jul 2013 03:06:43 +0000 (23:06 -0400)]
util: add rebase fix that was accidentally omitted from previous patch
I had made the change locally, so make check and make syntax-check
were successful, but forgot to add/commit. Unfortunately, git allows a
push when the local directory is dirty, so it didn't catch my mistake.
Prevent use of 'int' data type & 'ii', 'jj', 'kk' var names for loops
Add two syntax-check rules
- sc_prohibit_int_ijk - block use of 'int' as a data type
for any variables named 'i', 'j', 'k'
- sc_prohibit_int_iijjkk - block use of 'ii', 'jj', 'kk'
for any variable names
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/hyperv/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/interface/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/network/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/locking/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/node_device/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/nwfilter/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/openvz/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/parallels/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/remote/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/secret/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/security files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/storage/ files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/{esx,vmx,vmware} files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert 'int i' to 'size_t i' in src/{xen,xenapi,xenxs} files
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Actually, I'm turning this function into a macro as filename,
function name and line number needs to be passed. The new
function virAsprintfInternal is introduced with the extended set
of arguments.
Initially proposed as [1], but then changed to comment fix only. VMDK
can have internal version set to 2 when there are few features added
which do not affect us. Thanks to Jan's commit a1ee8e18 this can be
easily fixed by adding it to list of supported versions.
Eric Blake [Wed, 3 Jul 2013 20:43:11 +0000 (14:43 -0600)]
build: honor autogen.sh --no-git
Based on a report by Chandrashekar Shastri, at
https://bugzilla.redhat.com/show_bug.cgi?id=979360
On systems where git cannot access the outside world, a developer
can instead arrange to get a copy of gnulib at the right commit
via side channels (such as NFS share drives), set GNULIB_SRCDIR,
then use ./autogen.sh --no-git. In this setup, we will now
avoid direct use of git. Of course, this means no automatic
gnulib updates when libvirt.git updates its submodule, but it
is expected that any developer in such a situation is already
prepared to deal with the fallout.
* .gnulib: Update to latest, for bootstrap.
* bootstrap: Synchronize from gnulib.
* autogen.sh (no_git): Avoid git when requested.
* cfg.mk (_update_required): Skip automatic rerun of bootstrap if
we can't use git.
* docs/compiling.html.in: Document this setup.
* docs/hacking.html.in: Mention this.
* HACKING: Regenerate.
Eric Blake [Mon, 8 Jul 2013 22:37:11 +0000 (16:37 -0600)]
maint: tweak use of <a> in HACKING
The previous handling of <a> tags led to some less-than-ideal
layout in HACKING (most noticeable on a mid-sentence reference
to the valgrind home page).
This helper function is used to create parent directory for
the hostdev which will be added to the container. If the
parent directory of this hostdev doesn't exist, the mknod of
the hostdev will fail. eg with /dev/net/tun
Many applications use /dev/tty to read from stdin.
e.g. zypper on openSUSE.
Let's create this device node to unbreak those applications.
As /dev/tty is a synonym for the current controlling terminal
it cannot harm the host or any other containers.
Signed-off-by: Richard Weinberger <richard@nod.at>
Peter Krempa [Tue, 2 Jul 2013 16:34:58 +0000 (18:34 +0200)]
selinux: Always generate imagelabel
The imagelabel SELinux label was only generated when relabeling was
enabled. This prohibited labeling of files created by libvirt that need
to be labeled even if relabeling is turned off.
The only codepath this change has direct impact on is labeling of FDs
passed to qemu which is always safe in current state.