The function is used to automatically feed a buffer into a pipe which
can be used by the command to read contents of the buffer.
Rather than passing in a pipe, let's create the pipe inside
virCommandSetSendBuffer and directly associate the reader end with the
command. This way the ownership of both ends of the pipe will end up
with the virCommand right away reducing the need of cleanup in callers.
The returned value then can be used just to format the appropriate
arguments without worrying about cleanup or failure.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function can't fail nowadays. Remove the return value and adjust the
only caller which ensures that @cmd is non-NULL and @fd is positive.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Extract the check and reporting of error from the individual virCommand
APIs into a separate helper. This will aid future refactors.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
If WITH_PIPE2 is not defined we attempt to set the pipe to nonblocking
operation after they are created. We errorneously rewrote the existing
error message on failure to do so or even reported an error if quiet
mode was requested.
Fixes: ab36f72947
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The function is constructing an error message from a prefix and the
contents of the qemu log file. Marking just two string modifiers as
translatable is pointless and will certainly confuse translators.
Remove the marking and add a comment which bypasses the
sc_libvirt_unmarked_diagnostics check.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that error message formatting doesn't use fixed size buffers we can
drop the math for calculating the maximum chunk of log to report in the
error message and use a round number. This also makes it obvious that
the chosen number is arbitrary.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use of VIR_ERROR_MAX_LENGTH is actually misleading to the readers
because it implies that the strings in virError are 1024 bytes at most.
That isn't true at least for the 'message' field as it's constructed
from concatenating the detail string which (was) max 1024 bytes with
the string variant of the error code without limiting to 1024.
Use a local copy for declaring the struct for error transport with a
comment so that's obvious that it's a local decision to use 1k buffers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Some error message reporting functions already have allocated buffers
which were used to format the error message, so copying the strings is
redundant.
Extract the internals from 'virRaiseErrorFull' to
'virRaiseErrorInternal' which takes allocated strings as arguments and
steals them, so that callers can reuse the buffers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This was (probably) a relict from times when we cared about OOM
conditions and the possibility to report the error. Nowadays it doesn't
make sense as virRaiseErrorFull will do an allocated copy of the strings
and also concatenate the error message prefix with the detail which
doesn't guarantee that the result will be less than 1024 chars.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use glib functions to do the relative name lookup instead of manual
assembly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Passing 'strlen(src)' for length makes it equivalent to virStrcpy.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virStrncpy was called with -1 for length of the copied source which is
equivalent to virStrcpy.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We want a (possibly truncated) copy of the full source string so
virStrcpy is a better fit.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
15 out of 72 invocations of virStrcpy(Static) ignore the return value as
it's either impossible to fail or in certain cases a truncated copy is
still good enough. Unfortunately virStrcpy doesn't copy anything in
such case as the checks are done first.
Fix this by using g_strlcpy for the implementation and removing
G_GNUC_WARN_UNUSED_RESULT from the function so that callers can decide
when it's okay.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Surprisingly, we never documented the relationship between
connection URI and the location of qemu.conf. Users might wonder
what qemu.conf is loaded when they are connecting to the session
daemon or embed URI. And what to do if the file doesn't exist for
the URI they're using.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Similarly to the crash workaround:
commit 0db4743645
Author: Daniel P. Berrangé <berrange@redhat.com>
Date: Tue Jul 28 16:52:47 2020 +0100
util: avoid crash due to race in glib event loop code
we need to do this in the other event loop as crash in that one was also
reported:
https://bugzilla.redhat.com/show_bug.cgi?id=1931331
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This way it can be used from other places as well.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Generated using the following spatch:
@@
expression path;
@@
- virFileMakePath(path)
+ g_mkdir_with_parents(path, 0777)
However, 14 occurrences were not replaced, e.g. in
virHostdevManagerNew(). I don't really understand why.
Fixed by hand afterwards.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
These functions are identical. Made using this spatch:
@@
expression path, mode;
@@
- virFileMakePathWithMode(path, mode)
+ g_mkdir_with_parents(path, mode)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There are a few uses of g_autoslist in the qemu driver and likely more
will come throughout the codebase in the future. g_autoslist first
appeared in glib 2.56, so bump the minimum version
https://developer.gnome.org/glib/stable/glib-Miscellaneous-Macros.html#g-autoslist
Bumping the minimum version is an opportune time to update the list of
minimum glib versions found on the distros targeted by libvirt's
platform support policy
RHEL-7: 2.56.1
RHEL-8: 2.56.4
Debian (Buster): 2.58.3
OpenBSD (Ports): 2.66.7
FreeBSD (Ports): 2.66.7
openSUSE Leap 15.2, SLE15-SP2: 2.62.6
Ubuntu (Bionic): 2.56.1
macOS (Homebrew): 2.66.7
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
We've already applied this policy on multiple occasions, but it's
good to have it written down so that there can be no confusion.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Refractoring includes:
* removal of VIR_FREE
* inversion of the condition
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
FreeBSD 13.x and newer ship BSD grep which apparently has some
performance issues causing certain syntax check tests to run longer than
the default 30 seconds timeout used by meson.
However, GNU grep is still available through the textproc/gnugrep port,
so require it on FreeBSD if /usr/bin/grep is a BSD grep to make checks
pass in a reasonable time.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
By:
* declaration of an autofreed variable in for loop
* use of a new variable
* removal of VIR_FREE
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
VIR_DOMAIN_HYPERV_STIMER happens to have the same numerical value as
VIR_DOMAIN_FEATURE_HYPERV, resulting in the if-block to always being
executed when a "<hyperv>" tag is found, whether or not it actually
contained a "<stimer>" tag. This had no ill effects, as virXPathNodeSet()
would simply return 0 if that tag does not exist.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Variables using `g_autofree` should not be manually VIR_FREE'd and reused.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Previous commit removed all usage of this function so we can remove it.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that we enforce the cpu.shares range kernel will no longer silently
change the value that libvirt configures so there is no need to read
the value back to get the actual configuration.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Before the conversion to using systemd DBus API to set the cpu.shares
there was some magic conversion done by kernel which was documented in
virsh manpage as well. Now systemd errors out if the value is out of
range.
Since we enforce the range for other cpu cgroup attributes 'quota' and
'period' it makes sense to do the same for 'shares' as well.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Commit a208176ca1 introduced this feature
with an incorrect "svme-addr-check" spelling.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Tim Wiederhake <twiederh@redhat.com>
Commit 887dd0d331 caused a small regression in NodeDeviceDetach in the libxl
driver when the 'driver' parameter is not specified. E.g.
# virsh nodedev-detach pci_0000_0a_10_0
error: Failed to detach device pci_0000_0a_10_0
error: An error occurred, but the cause is unknown
If the driver name is not specified, NULL is passed to
virDomainDriverNodeDeviceDetachFlags, in which case virPCIDeviceSetStubDriver
is never called to set the stub to pciback. Fix it by setting the driver to
"xen" if it is not specified when invoking NodeDeviceDetach.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
