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2015-02-17qga: implement qmp_guest_set_memory_blocks() for Linux with sysfszhanghailiang1-1/+29
We can change guest's online/offline state of memory blocks, by using command 'guest-set-memory-blocks'. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2015-02-17qga: implement qmp_guest_get_memory_blocks() for Linux with sysfszhanghailiang1-1/+232
We can get guest's memory block information by using command "guest-get-memory-blocks", the returned value contains a list of memory block info, such as phys-index, online state, can-offline info. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> *replaced guest-triggerable assertion with an error msg Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2015-02-17qga: introduce three guest memory block commmands with stubszhanghailiang1-0/+38
Introduce three new guest commands: guest-get-memory-blocks, guest-set-memory-blocks, guest-get-memory-block-size. With these three commands, we can support online/offline guest's memory block (logical memory hotplug/unplug) as required from host. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> *generalized guest-get-memory-block-size to get-get-memory-block-info for future extensibility Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2015-02-16guest agent: guest-file-open: refactoringSimon Zolin1-8/+23
Moved the code that sets non-blocking flag on fd into a separate function. Signed-off-by: Simon Zolin <szolin@parallels.com> Reviewed-by: Roman Kagan <rkagan@parallels.com> Signed-off-by: Denis V. Lunev <den@openvz.org> CC: Michael Roth <mdroth@linux.vnet.ibm.com> CC: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2015-02-16qga: add guest-set-user-password commandDaniel P. Berrange1-0/+110
Add a new 'guest-set-user-password' command for changing the password of guest OS user accounts. This command is needed to enable OpenStack to support its API for changing the admin password of guests running on KVM/QEMU. It is not practical to provide a command at the QEMU level explicitly targetting administrator account password change only, since different guest OS have different names for the admin account. While UNIX systems use 'root', Windows systems typically use 'Administrator' and even that can be renamed. Higher level apps like OpenStack have the ability to figure out the correct admin account name since they have info that QEMU/libvirt do not. The command accepts either the clear text password string, encoded in base64 to make it 8-bit safe in JSON: $ echo -n "123456" | base64 MTIzNDU2 $ virsh -c qemu:///system qemu-agent-command f21x86_64 \ '{ "execute": "guest-set-user-password", "arguments": { "crypted": false, "username": "root", "password": "MTIzNDU2" } }' {"return":{}} Or a password that has already been run though a crypt(3) like algorithm appropriate for the guest, again then base64 encoded: $ echo -n '$6$n01A2Tau$e...snip...DfMOP7of9AJ1I8q0' | base64 JDYkb...snip...YT2Ey $ virsh -c qemu:///system qemu-agent-command f21x86_64 \ '{ "execute": "guest-set-user-password", "arguments": { "crypted": true, "username": "root", "password": "JDYkb...snip...YT2Ey" } }' NB windows support is desirable, but not implemented in this patch. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-10-22qga: Rewrite code where using readdir_rzhanghailiang1-12/+15
If readdir_r fails, error_setg_errno will reference the freed pointer *dirpath*. Moreover, readdir_r may cause a buffer overflow, using readdir instead. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Cc: qemu-stable@nongnu.org Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-08-07qga: Disable unsupported commands by defaultTomoki Sekiyama1-0/+38
Currently management softwares cannot know whether a qemu-ga command is supported or not on the running platform until they actually execute it. This patch disables unsupported commands at launch time of qemu-ga, so that management softwares can check whether they are supported from 'enabled' property of the result from 'guest-info' command. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-08-07qga: Add guest-get-fsinfo commandTomoki Sekiyama1-1/+437
Add command to get mounted filesystems information in the guest. The returned value contains a list of mountpoint paths and corresponding disks info such as disk bus type, drive address, and the disk controllers' PCI addresses, so that management layer such as libvirt can resolve the disk backends. For example, when `lsblk' result is: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdb 8:16 0 1G 0 disk `-sdb1 8:17 0 1024M 0 part `-vg0-lv0 253:1 0 1.4G 0 lvm /mnt/test sdc 8:32 0 1G 0 disk `-sdc1 8:33 0 512M 0 part `-vg0-lv0 253:1 0 1.4G 0 lvm /mnt/test vda 252:0 0 25G 0 disk `-vda1 252:1 0 25G 0 part / where sdb is a SCSI disk with PCI controller 0000:00:0a.0 and ID=1, sdc is an IDE disk with PCI controller 0000:00:01.1, and vda is a virtio-blk disk with PCI device 0000:00:06.0, guest-get-fsinfo command will return the following result: {"return": [{"name":"dm-1", "mountpoint":"/mnt/test", "disk":[ {"bus-type":"scsi","bus":0,"unit":1,"target":0, "pci-controller":{"bus":0,"slot":10,"domain":0,"function":0}}, {"bus-type":"ide","bus":0,"unit":0,"target":0, "pci-controller":{"bus":0,"slot":1,"domain":0,"function":1}}], "type":"xfs"}, {"name":"vda1", "mountpoint":"/", "disk":[ {"bus-type":"virtio","bus":0,"unit":0,"target":0, "pci-controller":{"bus":0,"slot":6,"domain":0,"function":0}}], "type":"ext4"}]} In Linux guest, the disk information is resolved from sysfs. So far, it only supports virtio-blk, virtio-scsi, IDE, SATA, SCSI disks on x86 hosts, and "disk" parameter may be empty for unsupported disk types. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> *updated schema to report 2.2 as initial supported version Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-08-07qga: Add guest-fsfreeze-freeze-list commandTomoki Sekiyama1-1/+31
If an array of mount point paths is specified as 'mountpoints' argument of guest-fsfreeze-freeze-list, qemu-ga will only freeze the file systems mounted on specified paths in Linux guests. Otherwise, it works as the same way as guest-fsfreeze-freeze. This would be useful when the host wants to create partial disk snapshots. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Reviewed-by: Eric Blake <eblake@redhat.com> *updated schema to report 2.2 as initial supported version Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-07-18qga: Add missing 'static' attributeStefan Weil1-1/+1
This fixes a warning from the static code analysis (smatch). Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-05-09qga: Clean up fragile use of error_is_set()Markus Armbruster1-6/+16
Using error_is_set(ERRP) to find out whether a function failed is either wrong, fragile, or unnecessarily opaque. It's wrong when ERRP may be null, because errors go undetected when it is. It's fragile when proving ERRP non-null involves a non-local argument. Else, it's unnecessarily opaque (see commit 84d18f0). The error_is_set(errp) in the guest agent command handler functions are merely fragile, because all chall chains (do_qmp_dispatch() via the generated marshalling functions) pass a non-null errp argument. Make the code more robust and more obviously correct: receive the error in a local variable, then propagate it through the parameter. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-05-09qga: Use return values instead of error_is_set(errp)Markus Armbruster1-3/+3
Using error_is_set(errp) to check whether a function call failed is fragile: it breaks when errp is null. ga_get_fd_handle() and guest_file_handle_add() don't return a useful value when they fail, but that's just stupid. Fix that, and check them instead. As far as I can tell, errp can't be null there, but this is more robust and more obviously correct. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-05-09qga: Consistently name Error ** objects errp, and not errMarkus Armbruster1-98/+101
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-04-18qga: trivial fix for unclear documentation of guest-set-timeAmos Kong1-1/+1
We mixed the use of "guest time", "system time", "hardware time", "RTC" in documentation, it's unclear. This patch just added two remarks of RTC and replace two "guest time" by "guest's system time". Signed-off-by: Amos Kong <akong@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-02-23qga: Fix memory allocation pastoMarkus Armbruster1-1/+1
qmp_guest_file_seek() allocates memory for a GuestFileRead object instead of the GuestFileSeek object it actually uses. Harmless, because the GuestFileRead is slightly larger. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-02-23qga: Don't require 'time' argument in guest-set-time commandMichal Privoznik1-14/+23
As the description to the guest-set-time states, the command is there to ease time synchronization after resume. If guest was suspended for longer period of time, its system time can go off so badly, that even NTP refuses to set it. That's why the command was invented: to give users chance to set the time (not necessarily 100% correct). However, there's is no real need for us to require users to pass an arbitrary time. Especially if we can read the correct value from RTC (boiling down to reading host's time). Hence this commit enables logic: guest-set-time() == guest-set-time($now_from_rtc) Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2014-02-17Use error_is_set() only when necessaryMarkus Armbruster1-9/+9
error_is_set(&var) is the same as var != NULL, but it takes whole-program analysis to figure that out. Unnecessarily hard for optimizers, static checkers, and human readers. Dumb it down to obvious. Gets rid of several dozen Coverity false positives. Note that the obvious form is already used in many places. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2013-11-21qga: Fix compiler warnings (missing format attribute, wrong format strings)Stefan Weil1-4/+4
gcc 4.8.2 reports this warning when extra warnings are enabled (-Wextra): CC qga/commands.o qga/commands.c: In function ‘slog’: qga/commands.c:28:5: error: function might be possible candidate for ‘gnu_printf’ format attribute [-Werror=suggest-attribute=format] g_logv("syslog", G_LOG_LEVEL_INFO, fmt, ap); ^ gcc 4.8.2 reports this warning when slog is declared with the gnu_printf format attribute: qga/commands-posix.c: In function ‘qmp_guest_file_open’: qga/commands-posix.c:404:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘int64_t’ [-Wformat=] slog("guest-file-open, handle: %d", handle); ^ On 32 bit hosts there are three more warnings which are also fixed here. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-11-16qga: Fix shutdown command of guest agent to work with SysVwhitearchey1-1/+1
For now guest agent uses following command to shutdown system: shutdown -P +0 "blabla" but this syntax works only with shutdown command from systemd or upstart, because SysV shutdown requires -h switch. Following patch changes the command so it works with systemd, upstart and SysV With upstart/systemd qga use one of thee commands, depending on 'mode' parameter: shutdown -P +0 "..." shutdown -H +0 "..." shutdown -r +0 "..." SysV equivalents for these are: shutdown -h -P +0 "..." shutdown -h -H +0 "..." shutdown -h -r +0 "..." and these retain their meaning with upstart/systemd. According to FreeBSD manpages, shutdown does not accept -P and -H options. Commands should be: shutdown -p +0 "..." shutdown -h +0 "..." shutdown -r +0 "..." shutdown in Solaris does not accept any of -hHpPr and does not accept time in "+0" format Signed-off-by: Michael Avdienko <whitearchey@gmail.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-10-10qemu-ga: execute fsfreeze-freeze in reverse order of mountsTomoki Sekiyama1-2/+2
Currently, fsfreeze-freeze may cause deadlock if a guest has loopback mounts of image files in its disk; e.g.: # mount | grep ^/ /dev/vda1 / type ext4 (rw,noatime,seclabel,data=ordered) /tmp/disk.img on /mnt type ext4 (rw,relatime,seclabel) To avoid the deadlock, this freezes filesystems in reverse order of mounts. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com> Reviewed-by: Eric Blake <eblake@redhat.com> *fix up commit msg Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-13qga: unlink just created guest-file if fchmod() or fdopen() fails on itLaszlo Ersek1-0/+3
We shouldn't allow guest filesystem pollution on error paths. Suggested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-13qga: distinguish binary modes in "guest_file_open_modes" mapLaszlo Ersek1-6/+16
In Windows guests this may make a difference. Since the original patch (commit c689b4f1) sought to be pedantic and to consider theoretical corner cases of portability, we should fix it up where it failed to come through in that pursuit. Suggested-by: Eric Blake <eblake@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-05-07qga: set umask 0077 when daemonizing (CVE-2013-2007)Laszlo Ersek1-4/+119
The qemu guest agent creates a bunch of files with insecure permissions when started in daemon mode. For example: -rw-rw-rw- 1 root root /var/log/qemu-ga.log -rw-rw-rw- 1 root root /var/run/qga.state -rw-rw-rw- 1 root root /var/log/qga-fsfreeze-hook.log In addition, at least all files created with the "guest-file-open" QMP command, and all files created with shell output redirection (or otherwise) by utilities invoked by the fsfreeze hook script are affected. For now mask all file mode bits for "group" and "others" in become_daemon(). Temporarily, for compatibility reasons, stick with the 0666 file-mode in case of files newly created by the "guest-file-open" QMP call. Do so without changing the umask temporarily. Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-22Fix typos and misspellingsPeter Maydell1-1/+1
Fix various typos and misspellings. The bulk of these were found with codespell. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-11qga: implement qmp_guest_set_vcpus() for Linux with sysfsLaszlo Ersek1-6/+32
Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qga: implement qmp_guest_get_vcpus() for Linux with sysfsLaszlo Ersek1-6/+140
Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qga: introduce guest-get-vcpus / guest-set-vcpus with stubsLaszlo Ersek1-0/+12
Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qga: add guest-set-time commandLei Li1-0/+55
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> *added stub for w32 Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qga: add guest-get-time commandLei Li1-0/+16
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> *added stub for w32 Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-03-11qemu-ga: use key-value store to avoid recycling fd handles after restartMichael Roth1-6/+19
Hosts hold on to handles provided by guest-file-open for periods that can span beyond the life of the qemu-ga process that issued them. Since these are issued starting from 0 on every restart, we run the risk of issuing duplicate handles after restarts/reboots. As a result, users with a stale copy of these handles may end up reading/writing corrupted data due to their existing handles effectively being re-assigned to an unexpected file or offset. We unfortunately do not issue handles as strings, but as integers, so a solution such as using UUIDs can't be implemented without introducing a new interface. As a workaround, we fix this by implementing a persistent key-value store that will be used to track the value of the last handle that was issued across restarts/reboots to avoid issuing duplicates. The store is automatically written to the same directory we currently set via --statedir to track fsfreeze state, and so should be applicable for stable releases where this flag is supported. A follow-up can use this same store for handling fsfreeze state, but that change is cosmetic and left out for now. Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Cc: qemu-stable@nongnu.org * fixed guest_file_handle_add() return value from uint64_t to int64_t
2013-01-28qemu-ga: Plug leaks on qmp_guest_network_get_interfaces() error pathsMarkus Armbruster1-5/+6
Spotted by Coverity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-28qemu-ga: Plug memory leak in guest_fsfreeze_cleanup()Markus Armbruster1-4/+5
Neglects to free errors allocated by qmp_guest_fsfreeze_thaw(). Spotted by Coverity. While there, drop the test whether return value is negative (it's never true), and improve logging. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-19Replace non-portable asprintf by g_strdup_printfStefan Weil1-8/+5
g_strdup_printf already handles OOM errors, so some error handling in QEMU code can be removed. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-01-08qemu-ga: execute hook to quiesce the guest on fsfreeze-freeze/thawTomoki Sekiyama1-0/+69
To use the online disk snapshot for online-backup, application-level consistency of the snapshot image is required. However, currently the guest agent can provide only filesystem-level consistency, and the snapshot may contain dirty data, for example, incomplete transactions. This patch provides the opportunity to quiesce applications before snapshot is taken. If --fsfreeze-hook option is specified, the hook is executed with "freeze" argument before the filesystem is frozen by fsfreeze-freeze command. As for fsfreeze-thaw command, the hook is executed with "thaw" argument after the filesystem is thawed. This patch depends on patchset to improve error reporting by Luiz Capitulino: http://lists.gnu.org/archive/html/qemu-devel/2012-11/msg03016.html Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> *clarified usage in help output Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: guest_suspend(): improve error reportingLuiz Capitulino1-11/+18
Most errors are QERR_UNDEFINED_ERROR today. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: bios_supports_mode(): improve error reportingLuiz Capitulino1-19/+27
Most errors are QERR_UNDEFINED_ERROR today. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: qmp_guest_network_get_interfaces(): get rid of snprintf() + error_set()Luiz Capitulino1-21/+8
Convert them to error_setg_errno(). Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: qmp_guest_fstrim(): get rid of sprintf() + error_set()Luiz Capitulino1-7/+3
Convert them to error_setg_errno(). Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: qmp_guest_fsfreeze_*(): get rid of sprintf() + error_set()Luiz Capitulino1-7/+3
Convert them to error_setg_errno(). Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: build_fs_mount_list(): take an Error argumentLuiz Capitulino1-14/+16
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: qmp_guest_shutdown(): improve error reportingLuiz Capitulino1-10/+38
Most errors are QERR_UNDEFINED_ERROR. Also, adds ga_wait_child() as a future commit will use it too. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: qmp_guest_file_*: improve error reportingLuiz Capitulino1-9/+13
Use error_setg_errno() when possible with an improved error description. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: qmp_guest_file_close(): fix fclose() error checkLuiz Capitulino1-1/+1
fclose() returns EOF on error. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2013-01-08qemu-ga: guest_file_handle_find(): take an Error argumentLuiz Capitulino1-11/+7
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> *Fixed missing space character in error message Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini1-2/+2
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19qapi: move include files to include/qobject/Paolo Bonzini1-1/+1
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-06Merge branch 'trivial-patches' of git://github.com/stefanha/qemuAurelien Jarno1-2/+0
* 'trivial-patches' of git://github.com/stefanha/qemu: versatilepb: Use symbolic indices for ARM PIC qdev: kill bogus comment qemu-barrier: Fix compiler version check for future gcc versions hw: Add missing 'static' attribute for QEMUMachine cleanup useless return sentence qemu-sockets: Fix compiler warning (regression for MinGW) vnc: Fix spelling (hellmen -> hellman) in comment slirp: Fix spelling in comment (enought -> enough, insure -> ensure) tcg/arm: Use tcg_out_mov_reg rather than inline equivalent code cpu: Add missing 'static' attribute to qemu_global_mutex configure: Support empty target list (--target-list=) hw: Fix return value check for bdrv_read, bdrv_write
2012-10-05cleanup useless return sentenceAmos Kong1-2/+0
This patch cleans up return sentences in the end of void functions. Reported-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
2012-10-05qemu-ga: prefer pstrcpy: consistently NUL-terminate ifreq.ifr_nameJim Meyering1-1/+1
NUL-termination of the .ifr_name field is not required, but is fine (and preferable to using strncpy and leaving the reader to wonder), since the first thing the linux kernel does is to clear the last byte. Besides, using pstrcpy here makes this setting of ifr_name consistent with the other code (e.g., net/tap-linux.c) that does the same thing. Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-06-21qemu-ga: add guest-fstrim commandPaolo Bonzini1-3/+75
FITRIM is a mounted filesystem feature to discard (or "trim") blocks which are not in use by the filesystem. This is useful for solid-state drives (SSDs) and thinly-provisioned storage. Provide access to the feature from the host so that filesystems can be trimmed periodically or before migration. Here is an example using scsi_debug: # modprobe scsi_debug lbpu=1 lbpws=1 # sg_vpd -p0xb2 /dev/sdb Logical block provisioning VPD page (SBC): Unmap command supported (LBPU): 1 Write same (16) with unmap bit supported (LBWS): 1 Write same (10) with unmap bit supported (LBWS10): 0 # mke2fs /dev/sdb # cat /sys/bus/pseudo/drivers/scsi_debug/map 1-616,16257-16383 # mount /dev/sdb /run/media/pbonzini/test # dd if=/dev/zero of=/run/media/pbonzini/test/file # cat map 1-616,645-1588,1599-4026,4029-16383 # rm /run/media/pbonzini/test/file # ./qemu-ga /dev/fd/0 {"execute":"guest-fstrim"} {"return": {}} # cat map 1-612 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
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