The intent here is to allow the virt drivers to be run directly embedded
in an arbitrary process without interfering with libvirtd. To achieve
this they need to store all their configuration & state in a separate
directory tree from the main system or session libvirtd instances.
This can be useful for doing testing of the virt drivers in "make check"
without interfering with the user's own libvirtd instances.
It can also be used for applications using KVM/QEMU as a piece of
infrastructure to build an service, rather than for general purpose
OS hosting. A long standing example is libguestfs, which would prefer
if its temporary VMs did show up in the main libvirtd VM list, because
this confuses apps such as OpenStack Nova. A more recent example would
be Kata which is using KVM as a technology to build containers.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The function virSecretGetSecretString calls into secret driver and is
used from other hypervisors drivers and as such makes more sense in
util.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
A few places were importing dirname.h without actually using it.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The last_component() method is a GNULIB custom function
that returns a pointer to the base name in the path.
This is similar to g_path_get_basename() but without the
malloc. The extra malloc is no trouble for libvirt's
needs so we can use g_path_get_basename().
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The GLib g_lstat() function provides a portable impl for
Win32.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
A wrapper that calls g_fsync on Win32/macOS and fdatasync
elsewhere. g_fsync is a stronger flush than we need but it
satisfies the caller's requirements & matches the approach
gnulib takes.
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The g_fsync() API provides the same Windows portability
as GNULIB does for fsync().
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Use errno parameter in virReportSystemError.
Remove hold function return values if don't need.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Yi Li <yili@winhong.com>
Fix the return value status comparison checking for call to
volStorageBackendRBDRefreshVolInfo introduced by commit id f46d137e.
we only should fail when the return is < 0. -ENOENT, -ETIMEDOUT will
ignore according commit id f46d137e.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Yi Li <yili@winhong.com>
most libvirt code uses 'int rc' to hold intermediate
function return values. consistent with the rest of libvirt.
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Yi Li <yili@winhong.com>
Causing a crash when storagePoolLookupByTargetPath beacuse of
Some types of storage pool have no target elements.
Use STREQ_NULLABLE instead of STREQ
Avoids segfaults when using NULL arguments.
Core was generated by `/usr/sbin/libvirtd'.
Program terminated with signal 11, Segmentation fault.
(gdb) bt
0 0x0000ffff9e951388 in strcmp () from /lib64/libc.so.6
1 0x0000ffff92103e9c in storagePoolLookupByTargetPathCallback (
obj=0xffff7009aab0, opaque=0xffff801058b0) at storage/storage_driver.c:1649
2 0x0000ffff9f2c52a4 in virStoragePoolObjListSearchCb (
payload=0xffff801058b0, name=<optimized out>, opaque=<optimized out>)
at conf/virstorageobj.c:476
3 0x0000ffff9f1f2f7c in virHashSearch (ctable=0xffff800f4f60,
iter=iter@entry=0xffff9f2c5278 <virStoragePoolObjListSearchCb>,
data=data@entry=0xffff95af7488, name=name@entry=0x0) at util/virhash.c:696
4 0x0000ffff9f2c64f0 in virStoragePoolObjListSearch (pools=0xffff800f2ce0,
searcher=searcher@entry=0xffff92103e68 <storagePoolLookupByTargetPathCallback>,
opaque=<optimized out>) at conf/virstorageobj.c:505
5 0x0000ffff92101f54 in storagePoolLookupByTargetPath (conn=0xffff5c0009f0,
path=0xffff7009a850 "/vms/images") at storage/storage_driver.c:1672
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Yi Li <yili@winhong.com>
virGetUserRuntimeDirectory() *never* *ever* returns NULL, making the
checks for it completely unnecessary.
Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virGetUserConfigDirectory() *never* *ever* returns NULL, making the
checks for it completely unnecessary.
Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There is plenty of distributions that haven't switched to
systemd nor they force their users to (Gentoo, Alpine Linux to
name a few). With the daemon split merged their only option is to
still use the monolithic daemon which will go away eventually.
Provide init scripts for these distros too.
For now, I'm not introducing config files which would correspond
to the init files except for libvirtd and virtproxyd init scripts
where it might be desirable to tweak the command line of
corresponding daemons.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This is a very simple and straightforward implementation of the opposite
what buildPool does for the disk backend.
The background for this change comes from an existing test case in TCK
which does use the delete method for a pool of type disk, but it
truly could not have ever worked since the implementation simply
wasn't there for the pool of type disk.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
There are two daemons that wait for acquiring their pid files:
virtnetworkd and virtstoraged. This is undesirable as the idea
is to quit early if unable to acquire the pid file.
Fixes: v5.6.0-rc1~207.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This flag is not implied by g_mkstemp_full, only by g_mkstemp.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reported-by: Bjoern Walk <bwalk@linux.ibm.com>
Fixes: 4ac4773040
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Enables hosting a pool on an existing zfs pool without affecting
other datasets there.
Specify dataset instead of pool as source to use.
Parent of dataset must exist for pool-build to succeed.
Beware that pool-delete destroys the source dataset and all children.
Solves: https://www.redhat.com/archives/libvirt-users/2017-April/msg00041.html
Signed-off-by: Gregor Kopka <gregor@kopka.net>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Glib implementation follows the ISO C99 standard so it's safe to replace
the gnulib implementation.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
With g_mkstemp_full, there is no need to distinguish between
mkostemp and mkostemps (no suffix vs. a suffix of a fixed length),
because the GLib function looks for the XXXXXX pattern everywhere
in the string.
Use S_IRUSR | S_IWUSR for the permissions and do not pass O_RDWR
in flags since it's implied.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Using GRegex simplifies the code since g_match_info_fetch will
copy the matched substring for us.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
In my previous commit of v5.9.0-83-g4ae7181376 I've fixed
check-aclrules but whilst doing so, I forgot to wrap long
lines that I've added.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Previously we generated all source files into $srcdir which is no
longer true. This means that we can't just blindly prepend each
source file with $srcdir.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Previously we generated all source files into $srcdir which is no
longer true. This means that we can't just blindly prepend each
source file with $srcdir.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Move virStorageBackendFileSystemGetPoolSource outside of the while loop
Signed-off-by: Yi Li <yili@winhong.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function now does not return an error so we can drop it fully.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In few places we have the following code pattern:
int ret;
... /* @ret is not accessed here */
ret = f(...);
return ret;
This pattern can be written less verbose:
...
return f(...);
This patch was generated with following coccinelle spatch:
@@
type T;
constant C;
expression f;
identifier ret;
@@
-T ret = C;
... when != ret
-ret = f;
-return ret;
+return f;
Afterwards I needed to fix a few places, e.g. comment in
virDomainNetIPParseXML() was removed too because coccinelle
thinks it refers to @ret while in fact it doesn't. Also in few
places it replaced @ret declaration with a few spaces instead of
removing the line. But nothing terribly wrong.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Replace all occurrences of
if (VIR_STRDUP(a, b) < 0)
/* effectively dead code */
with:
a = g_strdup(b);
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Replace:
if (!s && VIR_STRDUP(s, str) < 0)
goto;
with:
if (!s)
s = g_strdup(str);
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
All the callers of these functions only check for a negative
return value.
However, virNetDevOpenvswitchGetVhostuserIfname is documented
as returning 1 for openvswitch interfaces so preserve that.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Replace all the occurrences of
ignore_value(VIR_STRDUP(a, b));
with
a = g_strdup(b);
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The use of $(AUG_GENTEST) as a dependency in the makefiles is
a problem because this was assumed to be the filename of the
script, but is in fact a full shell command line.
Split it into two variables, so it can be correctly used for
dependencies.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
On musl _PATH_MOUNTED is defined in paths.h, not in mntent.h, which
causes compilation errors:
storage/storage_backend_fs.c: In function 'virStorageBackendFileSystemIsMounted':
storage/storage_backend_fs.c:255:23: error: '_PATH_MOUNTED' undeclared (first use in this function); did you mean 'XPATH_POINT'?
if ((mtab = fopen(_PATH_MOUNTED, "r")) == NULL) {
^~~~~~~~~~~~~
XPATH_POINT
Fix this including paths.h if _PATH_MOUNTED is still not defined after
including mntent.h. This also works with glibc and uClibc-ng.
Signed-off-by: Carlos Santos <casantos@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Provide some consistency over error message variable name and usage
when saving error messages across possible other errors or possibility
of resetting of the last error.
Instead of virSaveLastError paired up with virSetError and virFreeError,
we should use the newer virErrorPreserveLast and virRestoreError.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that all the types using VIR_AUTOUNREF have a cleanup func defined
to virObjectUnref, use g_autoptr instead of VIR_AUTOUNREF.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since commit 44e7f02915
util: rewrite auto cleanup macros to use glib's equivalent
VIR_AUTOPTR aliases to g_autoptr. Replace all of its use by the GLib
macro version.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since commit 44e7f02915
util: rewrite auto cleanup macros to use glib's equivalent
VIR_AUTOFREE is just an alias for g_autofree. Use the GLib macros
directly instead of our custom aliases.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Use G_GNUC_UNUSED from GLib instead of ATTRIBUTE_UNUSED.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The usleep function was missing on older mingw versions, but we can rely
on it existing everywhere these days. It may only support times upto 1
second in duration though, so we'll prefer to use g_usleep instead.
The commandhelper program is not changed since that can't link to glib.
Fortunately it doesn't need to build on Windows platforms either.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Replace use of the gnulib base64 module with glib's own base64 API family.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Add the main glib.h to internal.h so that all common code can use it.
Historically glib allowed applications to register an alternative
memory allocator, so mixing g_malloc/g_free with malloc/free was not
safe.
This was feature was dropped in 2.46.0 with:
commit 3be6ed60aa58095691bd697344765e715a327fc1
Author: Alexander Larsson <alexl@redhat.com>
Date: Sat Jun 27 18:38:42 2015 +0200
Deprecate and drop support for memory vtables
Applications are still encourged to match g_malloc/g_free, but it is no
longer a mandatory requirement for correctness, just stylistic. This is
explicitly clarified in
commit 1f24b36607bf708f037396014b2cdbc08d67b275
Author: Daniel P. Berrangé <berrange@redhat.com>
Date: Thu Sep 5 14:37:54 2019 +0100
gmem: clarify that g_malloc always uses the system allocator
Applications can still use custom allocators in general, but they must
do this by linking to a library that replaces the core malloc/free
implemenentation entirely, instead of via a glib specific call.
This means that libvirt does not need to be concerned about use of
g_malloc/g_free causing an ABI change in the public libary, and can
avoid memory copying when talking to external libraries.
This patch probes for glib, which provides the foundation layer with
a collection of data structures, helper APIs, and platform portability
logic.
Later patches will introduce linkage to gobject which provides the
object type system, built on glib, and gio which providing objects
for various interesting tasks, most notably including DBus client
and server support and portable sockets APIs, but much more too.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
