Instead of changing the existed virFileMakePath to accept mode
argument and modifying a pile of its uses, this patch introduces
virFileMakePathWithMode, and use it instead of mkdir() to create
the readline history dir.
In vshSnapshotListCollect() vshCalloc was called with swapped nmemb and
size argument. This caused division by zero in xalloc_oversized as the
macro doesn't expect size to be zero.
Fixed up virsh -V output by removing invalid WITH_PROXY & WITH_ONE
checks, adding several missing checks, and fixing the DTrace check.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
v2:
- Refactored to use virBuffer
- Refactored to use virXPath wrappers
- Added support for tls-port and password for SPICE
- Added optional flag to disable SPICE password to the URI
- Added support for RDP
- Fixed code reviews
Add a new 'domdisplay' command that provides a URI for VNC, SPICE and
RDP connections. Presently the 'vncdisplay' command provides you with
the port info that QEMU is listening on but there is no counterpart for
SPICE and RDP. Additionally this provides you with the bind address as
specified in the XML, which the existing 'vncdisplay' lacks. For SPICE
connections it supports secure and unsecure channels and optionally
providing the password for the SPICE channel.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
Storage is one of the last domains in libvirt where we don't fully
utilize inactive and live XML. Okay, it might be because we don't
have support for that. So implement such support. However, we need
to fallback when talking to old daemon which doesn't support this
new flag called VIR_STORAGE_XML_INACTIVE.
The vshPrintRaw function is not used on Win32, and neither
is the 'msg' parameter of vshAskReedit. Change the nesting
of #ifdef WIN32 conditionals to address this
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Update the vncdisplay command to use the virXPath wrappers as well as
check if the domain is up rather than using the port set to -1 to mean
the domain is not up.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
This patch adds a check for the count of processors the user requests
for the guest machine so that invalid values produce a more helpful
error message.
This patch makes use of the newly added api virConnectListAllDomains()
to list domains in virsh.
Virsh now represents lists of domains using an internal structure
vshDomainList. This structure contains the virDomainPtr list as provided
by virConnectListAllDomains() and the count of domains in the list.
For backwards compatibility, the function vshDomainListCollect was added
that tries to enumerate the domains using the new API and if the API is
not supported falls back to the older approach with the two list
functions. The helper function also simulates filtering by all
currently supported flags added with virConnectListAllDomains().
This patch also cleans up the "list" command handler to use the new
helpers and adds new command line flags to make use of filtering.
Previously, to get the name of all snapshots with children, it was
necessary to get the name of all snapshots and then remove the
name of leaf snapshots. This is racy, and somewhat inefficient
compared to planned API additions. We can emulate --no-metadata on
0.9.5-0.9.12, but for now, there is no emulation of --no-leaves.
* tools/virsh.c (cmdSnapshotList): Add new options --no-leaves and
--no-metadata.
(vshSnapshotList): Emulate where possible.
* tools/virsh.pod (snapshot-list): Document them.
Append '(MAC Address)' after the help string of domiftune virsh
command as it takes the same type of argument as domif-{get,set}link
which have it specified.
Operating on a list of snapshot objects looks so much simpler.
In particular, since the helper function already trimmed out
irrelevant entries, we no longer have quite so many special cases
on finding the first snapshot to operate on. Also, vshTreePrint
no longer has a generic callback struct; both clients now pass
something different according to their own needs.
* tools/virsh.c (cmdSnapshotList): Use previous patches.
(vshTreeArrayLookup): Rename...
(vshNodeListLookup): ...now that it only has one client.
(cmdNodeListDevices): Adjust caller.
This patch is based on the fallback code out of cmdSnapshotList,
with tweaks to keep the snapshot objects around rather than just
their name, and to remove unwanted elements before returning.
It looks forward to a future patch when we add a way to list all
snapshot objects at once, and the next patch will simplify
cmdSnapshotList to take advantage of this factorization.
* tools/virsh.c (vshSnapshotList, vshSnapshotListFree): New functions.
Detected by valgrind:
==16217== 1 errors in context 1 of 12:
==16217== Invalid read of size 1
==16217== at 0x4A07804: __GI_strlen (mc_replace_strmem.c:284)
==16217== by 0x3019F167F6: xdr_string (in /lib64/libc-2.12.so)
==16217== by 0x3033709E8D: xdr_remote_nonnull_string (remote_protocol.c:31)
==16217== by 0x303370E5CB: xdr_remote_domain_update_device_flags_args (remote_protocol.c:2028)
==16217== by 0x30337197D1: virNetMessageEncodePayload (virnetmessage.c:341)
==16217== by 0x30337135E1: virNetClientProgramCall (virnetclientprogram.c:327)
==16217== by 0x30336F1EFD: callWithFD (remote_driver.c:4586)
==16217== by 0x30336F1F7B: call (remote_driver.c:4607)
==16217== by 0x30336F42F2: remoteDomainUpdateDeviceFlags (remote_client_bodies.h:2865)
==16217== by 0x30336D46E5: virDomainUpdateDeviceFlags (libvirt.c:9457)
==16217== by 0x41AEE8: cmdChangeMedia (virsh.c:15249)
==16217== by 0x413CB4: vshCommandRun (virsh.c:18669)
==16217== Address 0x4ec5e25 is 0 bytes after a block of size 293 alloc'd
==16217== at 0x4A04A28: calloc (vg_replace_malloc.c:467)
==16217== by 0x303364F1DB: virAllocN (memory.c:129)
==16217== by 0x41A844: vshPrepareDiskXML (virsh.c:15043)
==16217== by 0x41AECC: cmdChangeMedia (virsh.c:15246)
==16217== by 0x413CB4: vshCommandRun (virsh.c:18669)
==16217== by 0x423973: main (virsh.c:20261)
There is a little easter egg in virsh: one can easily clone
an object (domain, network, ...). Just 'virsh edit' change the name
and remove <uuid>. And then, in the end when reporting success
the new name was printed out.
However, with recent edit rewrite we lost the final part and are
still printing the original name out.
When printing reedit options we make stdin raw. However,
this results in stdout being raw as well. Therefore we need
to return carriage when doing new line. Unfortunately,
'\r' cannot be part of internationalized messages hence
we must move them to formatting string which then in turn
become huge and disarranged. To solve this, a new function
is introduced which takes variable string arguments and
prepend each with "\r\n" just before printing.
The attach-disk command used with parameter --cache created an invalid
XML snippet as the beginning of the <driver> element was not printed
when used solely with --cache and no other attribute to driver.
commit 52d064f42d added
VIR_NETWORK_XML_INACTIVE in order to allow suppressing the
auto-generated list of VFs in network definitions, and a --inactive
flag to virsh net-dumpxml to take advantage of the flag. However, it
missed out on two opportunities:
1) Use INACTIVE to get the current config of the network as it
exists on disk, rather than the currently active config.
2) Add INACTIVE to the flags used for the virsh net-edit command, so
that it won't include the forward-pool interfaces that were
autogenerated, and so that a re-edit of the network prior to
restarting it will show any other edits made since the last restart
of the network. (prior to this patch, if you edited a network a 2nd
time without restarting, all of the previous edits would magically
disappear).
In order to fit with the new #define-based generic edit function in
virsh.c, a new function vshNetworkGetXMLDesc() was added. This
function first tries to call virNetworkGetXMLDesc with the INACTIVE
flag added, then retries without if the first attempt fails (in the
manner expected when the server doesn't support it).
Expose the recent API additions in virsh. Borrows ideas from 'dominfo'
for the general type of information to display.
Output looks like:
$ tools/virsh snapshot-info fedora-local tmp
Name: tmp
Domain: fedora-local
Current: no
State: disk-snapshot
Parent: -
Children: 1
Descendants: 2
Metadata: yes
possibly with fewer lines when talking to older servers.
* tools/virsh.c (cmdSnapshotInfo): New command.
* tools/virsh.pod (snapshot-info): Document it.
Requiring the user to pass in parallel arrays of names and parents
is annoying; it means that you can't qsort one of the arrays without
invalidating the ordering of the other. By refactoring this function
to use callbacks, we isolate the layout to be independent of the
printing, and a future patch can exploit that to improve layout.
* tools/virsh.c (vshTreePrintInternal): Use callbacks rather than
requiring a char** array.
(vshTreeArrayLookup): New helper function.
(vshTreePrint, cmdNodeListDevices, cmdSnapshotList): Update callers.
I am not a fan of fixed-width buffers. All it takes is a
linear chain of more than 100 snapshots to mess up 'virsh
snapshot-list --tree'. Now that virBuffer is more powerful,
we might as well exploit its power.
* tools/virsh.c (cmdNodeListDevicesPrint): Simplify to use a
virBuffer instead of fixed-width prefix, factor guts, and rename...
(vshTreePrint, vshTreePrintInternal): ...along with new helper.
(cmdNodeListDevices, cmdSnapshotList): Update callers.
Commits 51082301, 16d7b39, and 521cc447 introduced support for
'virsh snapshot-list --from' when talking to a server older than
0.9.5, but broke support for plain 'virsh snapshot-list' for the
same old server in the process. Because the code is not properly
gated, we end up with a SIGSEGV during a strcmp with a NULL argument.
* tools/virsh.c (cmdSnapshotList): Don't waste time on fallbacks
when --from is not present.
If users *-edit but make a mistake in XML all changes are
permanently lost. However, if virsh is not running within
a script we can ask user if he wants to re-edit the file
and correct the mistakes.
Currently, we either generate some cmd*Edit commands (cmdPoolEdit
and cmdNetworkEdit) via sed script or copy the body of cmdEdit
(e.g. cmdInterfaceEdit, cmdNWFilterEdit, etc.). This fact makes
it harder to implement any new feature to our editing system.
Therefore switch to new implementation - define macros to:
- dump XML (EDIT_GET_XML)
- take an action if XML wasn't changed,
usually just vshPrint() (EDIT_NOT_CHANGED)
- define new object (EDIT_DEFINE) - the edited XML is in @doc_edited
- free object defined by EDIT_DEFINE (EDIT_FREE)
and #include "virsh-edit.c"
strncpy is generally evil - it runs the risk of missing NUL
termination, and more often than not wastes time zeroing way
more bytes than strictly necessary. We've avoided this evil
in our virStrncpy wrapper, except for places where we forgot
to use the wrapper; meanwhile, we have also added an even
higher layer wrapper for setting virTypedParameter values.
* tools/virsh.c (cmdMemtune, cmdBlkdeviotune): Use modern API.
* cfg.mk (exclude_file_name_regexp--sc_prohibit_strncpy): Tighten.
Remove the uid param from virGetUserConfigDirectory,
virGetUserCacheDirectory, virGetUserRuntimeDirectory,
and virGetUserDirectory
These functions were universally called with the
results of getuid() or geteuid(). To make it practical
to port to Win32, remove the uid parameter and hardcode
geteuid()
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Remove a number of pointless checks against PATH_MAX and
add a syntax-check rule to prevent its use in future
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This patch adds support for a new storage backend with RBD support.
RBD is the RADOS Block Device and is part of the Ceph distributed storage
system.
It comes in two flavours: Qemu-RBD and Kernel RBD, this storage backend only
supports Qemu-RBD, thus limiting the use of this storage driver to Qemu only.
To function this backend relies on librbd and librados being present on the
local system.
The backend also supports Cephx authentication for safe authentication with
the Ceph cluster.
For storing credentials it uses the built-in secret mechanism of libvirt.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
Currently virDomainGetCPUStats gets total cpu usage, which consists
of:
1. vcpu usage: the physical cpu time consumed by virtual cpu(s) of
domain
2. hypervisor: `total cpu usage' - `vcpu usage'
The param 'vcpu_time' is for getting vcpu usages.
As defined in:
http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
This offers a number of advantages:
* Allows sharing a home directory between different machines, or
sessions (eg. using NFS)
* Cleanly separates cache, runtime (eg. sockets), or app data from
user settings
* Supports performing smart or selective migration of settings
between different OS versions
* Supports reseting settings without breaking things
* Makes it possible to clear cache data to make room when the disk
is filling up
* Allows us to write a robust and efficient backup solution
* Allows an admin flexibility to change where data and settings are stored
* Dramatically reduces the complexity and incoherence of the
system for administrators
* tools/virsh.c (vshParseSnapshotDiskspec): Fix off-by-3 memmove
that would corrupt heap when parsing escaped --diskspec comma.
Bug introduced via commit v0.9.4-260-g35d52b5.
The recent push to use correct scaling terms (kB for 1000, KiB for
1024 - such as commit 9dfdead) missed some places in virsh.
* tools/virsh.c (prettyCapacity, cmdDominfo, cmdFreecell)
(cmdNodeinfo, cmdNodeMemStats, cmdMigrateSetMaxSpeed)
(cmdBlockCopy, cmdBlockPull, cmdBlockJob): Use KiB, not kB, when
referring to multiples of 1024.
* tests/virshtest.c: Update expected output to match.
https://bugzilla.redhat.com/show_bug.cgi?id=817244 mentions that
unlike most other tools, where --help or --version prevent all
further parsing of all later options, virsh was strange in that
--version stopped parsing but --help tried to plow on to the end.
There was no rationale for this original implementation (since
2005!), so I think we can safely conform to common usage patterns.
* tools/virsh.c (main): Drop useless 'help' variable.
Rather than further overloading 'blockpull', I decided to create a
new virsh command to expose the new flags of virDomainBlockRebase.
Blocking until the command completes naturally is pointless, since
the block copy job is intended to run indefinitely. Instead, I
made the command support three --wait modes: by default, it runs until
mirroring is started; with --pivot, it pivots as soon as mirroring
is started; and with --finish, it aborts (for a clean copy) as
soon as mirroring is started.
* tools/virsh.c (VSH_CMD_BLOCK_JOB_COPY): New mode.
(blockJobImpl): Support new flags.
(cmdBlockCopy): New command.
(cmdBlockJob): Support new job info, new abort flag.
* tools/virsh.pod (blockcopy, blockjob): Document the new command
and flags.
We were forgetting to check errno for overflow.
* tools/virsh.c (get_integer_keycode, vshCommandOptInt)
(vshCommandOptUInt, vshCommandOptUL, vshCommandOptLongLong)
(vshCommandOptULongLong): Rewrite to be safer.
I'm tired of shell-scripting to wait for completion of a block pull,
when virsh can be taught to do the same. I couldn't quite reuse
vshWatchJob, as this is not a case of a long-running command where
a second thread must be used to probe job status (at least, not unless
I make virsh start doing blocking waits for an event to fire), but it
served as inspiration for my simpler single-threaded loop. There is
up to a half-second delay between sending SIGINT and the job being
aborted, but I didn't think it worth the complexity of a second thread
and use of poll() just to minimize that delay.
* tools/virsh.c (cmdBlockPull): Add new options to wait for
completion.
(blockJobImpl): Add argument.
(cmdBlockJob): Adjust caller.
* tools/virsh.pod (blockjob): Document new mode.
