Commit Graph

632 Commits

Author SHA1 Message Date
Peter Krempa
47e6396651 virsh: Fix job watching when STDIN is not a tty
In commit b46c4787dd I changed the code to
watch long running jobs in virsh. Unfortunately I didn't take into
account that poll may get a hangup if the terminal is not a TTY and will
be closed.

This patch avoids polling the STDIN fd when there's no TTY.
2013-10-22 15:01:26 +01:00
Daniel P. Berrange
1e4a02bdfe Remove all direct use of getenv
Unconditional use of getenv is not secure in setuid env.
While not all libvirt code runs in a setuid env (since
much of it only exists inside libvirtd) this is not always
clear to developers. So make all the code paranoid, even
if it only ever runs inside libvirtd.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-10-21 14:03:52 +01:00
Eric Blake
e5f46105a1 build: add configure --without-readline
Make it much easier to test a configuration built without readline
support, by reusing our existing library probe machinery.  It gets
a bit tricky with readline, which does not provide a pkg-config
snippet, and which on some platforms requires one of several
terminal libraries as a prerequiste, but the end result should be
the same default behavior but now with the option to disable things.

* m4/virt-readline.m4 (LIBVIRT_CHECK_READLINE): Simplify by using
LIBVIRT_CHECK_LIB.
* tools/virsh.c: Convert USE_READLINE to WITH_READLINE.

Signed-off-by: Eric Blake <eblake@redhat.com>
2013-10-07 08:39:47 -06:00
Hongwei Bi
0925ad4e28 virsh: Fix a wrong check in cmdEcho()
What should be checked here is xmlbuf rather than buf.
2013-09-17 09:15:18 +02:00
Eric Blake
7e1cbd14bb virsh: fix build on mingw, which lacks termios stuff
Recent patches to fix handling of Ctrl-C when interacting with
ssh are not portable to mingw, which lacks termios handling.
The simplest solution is to just compile that code out, and
if someone ever appears that has a serious interest in getting
virsh fully functional even with ssh connections, they can
provide patches at that time.

* tools/virsh.h (_vshControl): Make termattr conditional.
* tools/virsh.c (vshTTYIsInterruptCharacter)
(vshTTYDisableInterrupt, vshTTYRestore, cfmakeraw, vshTTYMakeRaw)
(main): Likewise.

Signed-off-by: Eric Blake <eblake@redhat.com>
2013-09-04 16:00:36 -06:00
Peter Krempa
02eaf1821c virsh: Rename vshMakeStdinRaw to vshTTYMakeRaw and move it to virsh.c
Move the function to virsh.c to the rest of the TTY managing functions
and change the code so that it mirrors the rest.
2013-09-03 14:06:11 +02:00
Peter Krempa
40f1d18fea tools: rename console.[ch] to virsh-console.[ch] and fix coding style 2013-09-03 14:06:11 +02:00
Peter Krempa
ebef689363 virsh: Remember terminal state when starting and add helpers
This patch adds instrumentation to allow modification of config of the
terminal in virsh and successful reset of the state afterwards.

The added helpers allow to disable receiving of SIGINT when pressing the
key sequence (Ctrl+C usualy). This normally sends SIGINT to the
foreground process group which kills ssh processes used for transport of
the data.
2013-09-03 09:55:27 +02:00
Eric Blake
8aecd35126 virsh: detect programming errors with option parsing
Noticed while reviewing another patch that had an accidental
mismatch due to refactoring.  An audit of the code showed that
very few callers of vshCommandOpt were expecting a return of
-2, indicating programmer error, and of those that DID check,
they just propagated that status to yet another caller that
did not check.  Fix this by making the code blatantly warn
the programmer, rather than silently ignoring it and possibly
doing the wrong thing downstream.

I know that we frown on assert()/abort() inside libvirtd
(libraries should NEVER kill the program that linked them),
but as virsh is an app rather than the library, and as this
is not the first use of assert() in virsh, I think this
approach is okay.

* tools/virsh.h (vshCommandOpt): Drop declaration.
* tools/virsh.c (vshCommandOpt): Make static, and add a
parameter.  Abort on programmer errors rather than making callers
repeat that logic.
(vshCommandOptInt, vshCommandOptUInt, vshCommandOptUL)
(vshCommandOptString, vshCommandOptStringReq)
(vshCommandOptLongLong, vshCommandOptULongLong)
(vshCommandOptBool): Adjust callers.

Signed-off-by: Eric Blake <eblake@redhat.com>
2013-08-28 14:48:24 -06:00
Martin Kletzander
ac43da705f virsh: Fix debugging
Commit a0b6a36f "fixed" what abfff210 broke (URI precedence), but
there was still one more thing missing to fix.  When using virsh
parameters to setup debugging, those weren't honored, because at the
time debugging was initializing, arguments weren't parsed yet.  To
make ewerything work as expected, we need to initialize the debugging
twice, once before debugging (so we can debug option parsing properly)
and then again after these options are parsed.

As a side effect, this patch also fixes a leak when virsh is ran with
multiple '-l' parameters.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2013-08-28 09:38:04 +02:00
Ján Tomko
66d124b454 virsh: free messages after logging them to a file
The messages were only freed on error.

==12== 1,100 bytes in 1 blocks are definitely lost in loss record 698 of 729
==12==    by 0x4E98C22: virBufferAsprintf (virbuffer.c:294)
==12==    by 0x12C950: vshOutputLogFile (virsh.c:2440)
==12==    by 0x12880B: vshError (virsh.c:2254)
==12==    by 0x131957: vshCommandOptDomainBy (virsh-domain.c:109)
==12==    by 0x14253E: cmdStart (virsh-domain.c:3333)

https://bugzilla.redhat.com/show_bug.cgi?id=1001536
2013-08-28 08:05:56 +02:00
Martin Kletzander
a0b6a36f94 Fix URI connect precedence
Commit abfff210 changed the order of vshParseArgv() and vshInit() in
order to make fix debugging of parameter parsing.  However, vshInit()
did a vshReconnect() even though ctl->name wasn't set according to the
'-c' parameter yet.  In order to keep both issues fixed, I've split
the vshInit() into vshInitDebug() and vshInit().

One simple memleak of ctl->name is fixed as a part of this patch,
since it is related to the issue it's fixing.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=999323
2013-08-22 09:54:41 +02:00
Peter Krempa
d64af6ce3c virsh: modify vshStringToArray to duplicate the elements too
At a slightly larger memory expense allow stealing of items from the
string array returned from vshStringToArray and turn the result into a
string list compatible with virStringSplit. This will allow to use the
common dealloc function.

This patch also fixes a few forgotten checks of return from
vshStringToArray and one memory leak.
2013-08-20 17:53:49 +02:00
Daniel P. Berrange
111f6f4d73 Convert 'int i' to 'size_t i' in tools/ 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>
2013-07-10 17:40:13 +01:00
Michal Privoznik
76fad65bdc Adapt to VIR_ALLOC and virAsprintf in tools/* 2013-07-10 11:07:33 +02:00
Ján Tomko
d0d0413e48 util: switch virBufferTrim to void
We don't care whether the trim was succesful or not anywhere
except the tests.

Switch it to void and set the buffer error on wrong usage.
2013-06-19 09:21:09 +02:00
Michal Privoznik
528f420e03 Adapt to VIR_STRDUP and VIR_STRNDUP in tools/virsh.c 2013-05-24 10:10:03 +02:00
Zhang Xiaohe
c0955c3206 virsh: omit OPTION section in 'virsh help' if no option exists
Don't print 'OPTION' if there's no options. Just behaves as DESCRIPTION
does.
This mostly affects 'interface' command group.

Signed-off-by: Zhang Xiaohe <zhangxh@cn.fujitsu.com>
Reported-by: Li Yang <liyang.fnst@cn.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2013-05-22 16:17:24 -06:00
Osier Yang
c96f6ae845 tools: Remove the whitespace before ";" 2013-05-21 23:41:45 +08:00
John Ferlan
55b46920bb virsh: Resolve Coverity 'MISSING_BREAK'
Recent commit '53531e16' resulted in a new Coverity warning regarding
a missing break in the ':' options processing. Adjust the commit to
avoid the issue.
2013-05-08 06:16:53 -04:00
Eric Blake
25ae3d3015 build: avoid useless virAsprintf
virAsprintf(&foo, "%s", bar) is wasteful compared to
foo = strdup(bar) (or eventually, VIR_STRDUP(foo, bar),
but one thing at a time...).

Noticed while reviewing Laine's attempt to clean up broken
qemu:///session.

* cfg.mk (sc_prohibit_asprintf): Enhance rule.
* src/esx/esx_storage_backend_vmfs.c
(esxStorageBackendVMFSVolumeLookupByKey): Fix offender.
* src/network/bridge_driver.c (networkStateInitialize): Likewise.
* src/nwfilter/nwfilter_dhcpsnoop.c (virNWFilterSnoopDHCPOpen):
Likewise.
* src/storage/storage_backend_sheepdog.c
(virStorageBackendSheepdogRefreshVol): Likewise.
* src/util/vircgroup.c (virCgroupAddTaskStrController): Likewise.
* src/util/virdnsmasq.c (addnhostsAdd): Likewise.
* src/xen/block_stats.c (xenLinuxDomainDeviceID): Likewise.
* src/xen/xen_driver.c (xenUnifiedConnectOpen): Likewise.
* tools/virsh.c (vshGetTypedParamValue): Likewise.

Signed-off-by: Eric Blake <eblake@redhat.com>
2013-05-02 13:35:26 -06:00
Michal Privoznik
7c9a2d88cd virutil: Move string related functions to virstring.c
The source code base needs to be adapted as well. Some files
include virutil.h just for the string related functions (here,
the include is substituted to match the new file), some include
virutil.h without any need (here, the include is removed), and
some require both.
2013-05-02 16:56:55 +02:00
Ján Tomko
53531e16bf virsh: fix incorrect argument errors for long options
For long options, print:
* the option as specified by the user if it's unknown
* the canonical long option if its argument is not
  a number (and should be)

And for missing arguments, print both the short and
the long option name.
(Doing only one of those would require either parsing
argv ourselves or let getopt print the errors, since
we can't tell long and short options apart by optopt
or longindex)

https://bugzilla.redhat.com/show_bug.cgi?id=949373

Unsupported long option:

$ virsh --pm
Before:
error: unsupported option '-
After:
error: unsupported option '--pm'. See --help.

Missing parameter:

$ virsh --deb
Before:
error: option '-d' requires an argument
After:
error: option '-d'/'--debug' requires an argument

$ virsh -rd
Before:
error: option '-d' requires an argument
After:
error: option '-d'/'--debug' requires an argument

Non-numeric parameter:

$ virsh --deb duck
Before:
error: option -d takes a numeric argument
After:
error: option --debug takes a numeric argument
2013-04-30 10:23:44 +02:00
Eric Blake
117dc4cc8a virsh: suppress aliases in group help
'virsh help | grep nodedev-det' shows only nodedev-detach, but
'virsh help nodedev | grep nodedev-det' also shows the old alias
nodedev-dettach that we intentionally hid in commit af3f9aab.

See also commit 787f4fe and this bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=956966

* tools/virsh.c (vshCmdGrpHelp): Copy suppression of vshCmdHelp.

Signed-off-by: Eric Blake <eblake@redhat.com>
2013-04-26 05:45:11 -06:00
Osier Yang
9969ade669 syntax-check: Only allows to include public headers in external tools
With this patch, include public headers in "" form is only allowed
for "internal.h". And only the external tools (examples|tools|python
|include/libvirt) can include the public headers in <> form.
2013-04-18 11:31:19 +08:00
Peter Krempa
69ab07560a virsh: Register and unregister the close callback also in cmdConnect
This patch improves the error message after disconnecting from the
hypervisor and adds the close callback operations required not to leak
the callback reference.
2013-04-05 10:36:03 +02:00
Peter Krempa
ca9e73ebb6 virsh: Move cmdConnect from virsh-host.c to virsh.c
The function is used to establish connection so it should be in the main
virsh file. This movement also enables further improvements done in next
patches.

Note that the "connect" command has moved from the host section of virsh to the
main section. It is now listed by 'virsh help virsh' instead of 'virsh help
host'.
2013-04-05 10:36:03 +02:00
Viktor Mihajlovski
e964ba2786 virsh: Unregister the connection close notifier upon termination
Before closing the connection we unregister the close callback
to prevent a reference leak.

Further, the messages on virConnectClose != 0 are a bit more specific
now.

Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
2013-04-05 10:36:03 +02:00
Peter Krempa
6af9c564c0 virsh: Let the compiler check usage of all fields in vshCmdOptType enum
Get rid of the "default" labels to do so.
2013-03-26 09:12:26 +01:00
Martin Kletzander
73cc87d161 Cleanup useless flags specifications
After we switched to C99 initialization, I noticed there were many
places where the specification of .flags parameter differed.  After
going through many options and deciding whether to unify the
initialization to be '.flags = 0' or '.flags = VSH_OFLAG_NONE', I
realized both can be removed and it makes the code easier to go
through.
2013-03-15 15:05:45 +01:00
Martin Kletzander
abfff21006 Make vshDebug work when parsing parameters
The vshInit initializes ctl->debug by which vshDebug (which is also
called in vshParseArgv) decides whether to print out the message or
not.
2013-03-15 15:05:44 +01:00
Guannan Ren
dd71fa110a virsh: distinguish errors between missing argument and wrong option
Specifying ':' to suppress the error messages printed by getopt().
Then, distinguish the two types of errors.

Before:
 # virsh -c
   virsh: option requires an argument -- 'c'
   error: unsupported option '-?'. See --help.

After:
 # virsh -c
   error: option '-c' requires an argument

 # virsh -x
   error: unsupported option '-x'. See --help.
2013-02-20 10:14:25 +08:00
Jiri Denemark
ada9e157a2 virsh: Always print capacity unit
It doesn't make sense to print the unit (B) only with Ki, Mi, ...
prefixes. Even those poor bytes under 1 KiB are still bytes :-)
2013-02-19 10:52:37 +01:00
John Ferlan
1d816219eb virsh: Resolve possible NULL dereference
Coverity found that commit '41b5e845' had a possible NULL dereference on
arg->data processing
2013-02-16 07:44:35 -05:00
Michal Privoznik
6792676a04 virsh.c: Switch to c99 initialization of vshCmdInfo 2013-02-12 17:50:21 +01:00
Michal Privoznik
df5fd11f86 virsh: Switch to c99 initialization of vshCmdDef 2013-02-12 17:50:21 +01:00
Peter Krempa
41b5e8451b virsh: Add helper to request string arguments with error reporting
This patch adds a helper function with similar semantics to
vshCommandOptString that requests a string argument, but does some error
reporting without the need to do it in the functions themselves.

The error reporting also provides information about the parameter whose
retrieval failed.
2013-02-04 14:17:39 +01:00
John Ferlan
0ce43ca4ab virsh: Need to intialize 'str'
It was possible to call VIR_FREE in error prior to initialization.
2013-01-22 17:29:26 +01:00
Jiri Denemark
2e467de44a virsh: Use virTypedParams* APIs in domblkstat 2013-01-18 15:03:59 +01:00
Michal Privoznik
0f6c46c3d7 virsh.c: Switch to C99 initialization of vshCmdOptDef 2013-01-17 13:58:52 +01:00
John Ferlan
e69a85cc2b tools: Check return status on virBufferTrim() 2013-01-16 10:43:13 +01:00
Daniel P. Berrange
3d1596b048 Introduce an LXC specific public API & library
This patch introduces support for LXC specific public APIs. In
common with what was done for QEMU, this creates a libvirt_lxc.so
library and libvirt/libvirt-lxc.h header file.

The actual APIs are

  int virDomainLxcOpenNamespace(virDomainPtr domain,
                                int **fdlist,
                                unsigned int flags);

  int virDomainLxcEnterNamespace(virDomainPtr domain,
                                 unsigned int nfdlist,
                                 int *fdlist,
                                 unsigned int *noldfdlist,
                                 int **oldfdlist,
                                 unsigned int flags);

which provide a way to use the setns() system call to move the
calling process into the container's namespace. It is not
practical to write in a generically applicable manner. The
nearest that we could get to such an API would be an API which
allows to pass a command + argv to be executed inside a
container. Even if we had such a generic API, this LXC specific
API is still useful, because it allows the caller to maintain
the current process context, in particular any I/O streams they
have open.

NB the virDomainLxcEnterNamespace() API is special in that it
runs client side, so does not involve the internal driver API.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-01-14 13:58:34 +00:00
Daniel P. Berrange
d3b05abfa9 Convert HAVE_UDEV to WITH_UDEV
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-01-14 13:26:47 +00:00
Daniel P. Berrange
f24404a324 Rename virterror.c virterror_internal.h to virerror.{c,h} 2012-12-21 11:19:50 +00:00
Daniel P. Berrange
556cf5f617 Rename xml.{c,h} to virxml.{c,h} 2012-12-21 11:19:50 +00:00
Daniel P. Berrange
44f6ae27fe Rename util.{c,h} to virutil.{c,h} 2012-12-21 11:19:49 +00:00
Daniel P. Berrange
404174cad3 Rename threads.{c,h} to virthread.{c,h} 2012-12-21 11:19:49 +00:00
Daniel P. Berrange
ab9b7ec2f6 Rename memory.{c,h} to viralloc.{c,h} 2012-12-21 11:17:14 +00:00
Daniel P. Berrange
4d6050a8eb Rename event_poll.{c,h} to vireventpoll.{c,h} 2012-12-21 11:17:13 +00:00
Daniel P. Berrange
04d9510f50 Rename command.{c,h} to vircommand.{c,h} 2012-12-21 11:17:13 +00:00