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2013-07-16Tools: hv: KVP: Fix a bug in IPV6 subnet enumerationK. Y. Srinivasan1-2/+3
Each subnet string needs to be separated with a semicolon. Fix this bug. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: Stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-17tools: hv: Improve error logging in KVP daemon.Tomas Hozza1-11/+18
Use errno and strerror() when logging errors to provide more information. Signed-off-by: Tomas Hozza <thozza@redhat.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-03tools: hv: Fix file descriptor leaksTomas Hozza1-1/+5
Close "fd" file descriptor when is goes out of scope so it does not leak. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-03tools: hv: Check retrun value of strchr callTomas Hozza1-1/+3
Check return value of strchr call and dereference it only if it is not NULL. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-03tools: hv: Check return value of poll callTomas Hozza1-1/+10
Check return value of poll call and if it fails print error to the system log. If errno is EINVAL then exit with non-zero value otherwise continue the while loop and call poll again. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-03tools: hv: Check return value of setsockopt callTomas Hozza1-1/+7
Check return value of setsockopt call and if it fails print error to the system log and exit with non-zero value. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24Tools: hv: Fix a checkpatch warningK. Y. Srinivasan1-1/+1
Fix a checkpatch warning. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24tools: hv: skip iso9660 mounts in hv_vss_daemonOlaf Hering1-0/+2
fsreeze does not work for iso9660 filesystems. A ENOSUPP may be caught in the freeze case, but the subsequent thaw call would fail and leads to a false error. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24tools: hv: use FIFREEZE/FITHAW in hv_vss_daemonOlaf Hering1-9/+22
As suggested by Paolo Bonzini, use ioctl instead of calling fsfreeze. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24tools: hv: use getmntent in hv_vss_daemonOlaf Hering1-18/+21
As suggested by Paolo Bonzini, use getmntent instead of parsing output of mount(1). Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24Tools: hv: Fix a checkpatch warningK. Y. Srinivasan1-2/+3
Fix a checkpatch warning. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24tools: hv: fix checks for origin of netlink message in hv_vss_daemonOlaf Hering1-1/+7
Similar to what commit 95a69adab9acfc3981c504737a2b6578e4d846ef ("tools: hv: Netlink source address validation allows DoS") does in hv_kvp_daemon, improve checks for origin of netlink connector message. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24Tools: hv: fix warnings in hv_vss_daemonOlaf Hering1-4/+8
This change fixes a few compile errors: hv_vss_daemon.c:64:15: warning: unknown escape sequence '\/' hv_vss_daemon.c:64:15: warning: unknown escape sequence '\/' hv_vss_daemon.c: In function 'vss_operate': hv_vss_daemon.c:66: warning: 'return' with no value, in function returning non-void hv_vss_daemon.c: In function 'main': hv_vss_daemon.c:130: warning: ignoring return value of 'daemon', declared with attribute warn_unused_result hv_vss_daemon.c: In function 'vss_operate': hv_vss_daemon.c:47: warning: 'fs_op' may be used uninitialized in this function Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-15Drivers: hv: Add a new driver to support host initiated backupK. Y. Srinivasan1-0/+220
This driver supports host initiated backup of the guest. On Windows guests, the host can generate application consistent backups using the Windows VSS framework. On Linux, we ensure that the backup will be file system consistent. This driver allows the host to initiate a "Freeze" operation on all the mounted file systems in the guest. Once the mounted file systems in the guest are frozen, the host snapshots the guest's file systems. Once this is done, the guest's file systems are "thawed". This driver has a user-level component (daemon) that invokes the appropriate operation on all the mounted file systems in response to the requests from the host. The duration for which the guest is frozen is very short - a few seconds. During this interval, the diff disk is comitted. In this version of the patch I have addressed the feedback from Olaf Herring. Also, some of the connector related issues have been fixed. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-15tools: hv: daemon should check type of received Netlink msgTomas Hozza1-0/+4
HyperV KVP daemon should check nlmsg_type in received netlink message header. If message type is NLMSG_DONE daemon can proceed with processing otherwise it should wait for next message. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-15tools: hv: daemon setsockopt should use options macrosTomas Hozza1-3/+7
HyperV daemon should use macros for option values when calling setsockopt. Using specific numeric values instead of macros is confusing. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-15tools: hv: daemon should subscribe only to CN_KVP_IDX groupTomas Hozza1-2/+2
Previously HyperV daemon set sockaddr_nl.nl_groups to CN_KVP_IDX. Netlink documentation says: "nl_groups is a bit mask with every bit representing a netlink group number". Since CN_KVP_IDX value is "9" HyperV daemon was receiving Netlink messages also from group number "1" which is used by CGroup Rules Engine Daemon. This caused the daemon to segfault (at least on 2.6.32 kernel). HyperV daemon should set nl_groups to zero and specify multicast group CN_KVP_IDX only by using socket options. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-18tools: hv: Use CLOEXEC when opening kvp_pool filesTomas Hozza1-4/+4
Use CLOEXEC flag when opening kvp_pool_x files to prevent file descriptor leakage. Not using it was causing a problem when SELinux was enabled. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17tools: hv: Fix how ifcfg-* file is createdTomas Hozza2-43/+38
Fix for the daemon code and for hv_set_ifconfig.sh script, so that the created ifcfg-* file is consistent with initscripts documentation. Signed-off-by: Tomas Hozza <thozza@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17tools: hv: fix a typo in hv_set_ifconfig.shJason Wang1-1/+1
Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17tools/hv: Fix permissions of created directory and filesBen Hutchings1-2/+2
It's silly to create directories without execute permission, or to give permissions to 'other' but not the group-owner. Write the permissions in octal and 'ls -l' format since these are much easier to read than the named macros. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17tools/hv: Fix /var subdirectoryTomas Hozza1-6/+6
Initial patch by Ben Hutchings <ben@decadent.org.uk> We will install this in /usr, so it must use /var/lib for its state. Only programs installed under /opt should use /var/opt. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-15tools/hv: Fix string typesTomas Hozza1-5/+5
Initial patch by Ben Hutchings <ben@decadent.org.uk> Standard C strings are arrays of char, not __u8 (unsigned char). Declare variables and parameters accordingly, and add the necessary casts. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-15tools: hv: Netlink source address validation allows DoSTomas Hozza1-1/+7
The source code without this patch caused hypervkvpd to exit when it processed a spoofed Netlink packet which has been sent from an untrusted local user. Now Netlink messages with a non-zero nl_pid source address are ignored and a warning is printed into the syslog. Signed-off-by: Tomas Hozza <thozza@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-30Tools: hv: Don't return loopback addressesK. Y. Srinivasan1-4/+9
Don't return loopback addresses and further don't terminate the IP address strings with a semicolon. This is the current behavior of Windows guests. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reported-by: Claudio Latini <claudio.latini@live.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-30tools: hv: Return the full kernel versionK. Y. Srinivasan1-3/+6
Currently, we are returning the same string for both OSBuildNumber and OSVersion keys. Return the full uts string for the OSBuild key since Windows does not impose any restrictions on this. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reported-by: Claudio Latini <claudio.latini@live.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10tools/hv: Parse /etc/os-releaseBen Hutchings1-4/+55
There is a new convention, used by systemd and supported by most distributions, to put basic OS release information in /etc/os-release. Added some additional error checking on strdup() Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10tools/hv: Check for read/write errorsBen Hutchings1-3/+19
hv_kvp_daemon currently does not check whether fread() or fwrite() succeed. Add the necessary checks. Also, remove the incorrect use of feof() before fread(). Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10tools/hv: Fix exit() error codeBen Hutchings1-11/+11
Linux native exit codes are 8-bit unsigned values. exit(-1) results in an exit code of 255, which is usually reserved for shells reporting 'command not found'. Use the portable value EXIT_FAILURE. (Not that this matters much for a daemon.) Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10tools/hv: Fix file handle leakBen Hutchings1-1/+2
Match up each fopen() with an fclose(). Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10Tools: hv: Implement the KVP verb - KVP_OP_GET_IP_INFOK. Y. Srinivasan1-3/+90
Now implement the KVP verb - KVP_OP_GET_IP_INFO. This operation retrieves IP information for the specified interface. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10Tools: hv: Rename the function kvp_get_ip_address()K. Y. Srinivasan1-3/+3
Rename the function kvp_get_ip_address() to better reflect the functionality being implemented. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10Tools: hv: Implement the KVP verb - KVP_OP_SET_IP_INFOK. Y. Srinivasan1-0/+443
Implement the KVP verb - KVP_OP_SET_IP_INFO. This operation configures the specified interface based on the given configuration. Since configuring an interface is very distro specific, we invoke an external (Distro specific) script to configure the interface. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10Tools: hv: Add an example script to configure an interfaceK. Y. Srinivasan1-0/+68
To keep the KVP daemon code free of distro specific details, we invoke an external script to configure the interface. This is an example script that was used to test the KVP code. This script has to be implemented in a Distro specific fashion. For instance on distros that ship with Network Manager enabled, this script can be based on NM APIs. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10Tools: hv: Gather DHCP informationK. Y. Srinivasan1-0/+31
Collect information on dhcp setting for the specified interface. We invoke an external (Distro specific) script to get this information. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10Tools: hv: Add an example script to retrieve dhcp stateK. Y. Srinivasan1-0/+28
To keep the KVP daemon code free of distro specific details, we invoke an external script to retrieve the DHCP state. This is an example script that was used to test the KVP code. This script has to be implemented in a Distro specific fashion. For instance on distros that ship with Network Manager enabled, this script can be based on NM APIs. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-04Tools: hv: Gather DNS informationK. Y. Srinivasan1-0/+23
Now, gather DNS information. Invoke an external script (that can be distro dependent) to gather the DNS information. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-04Tools: hv: Add an example script to retrieve DNS entriesK. Y. Srinivasan1-0/+13
To keep the KVP daemon code free of distro specific details, we invoke an external script to retrieve the DNS entries. This is an example script that was used to test the KVP code. This script has to be implemented in a Distro specific fashion. For instance on distros that ship with Network Manager enabled, this script can be based on NM APIs. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-04Tools: hv: Correctly type string variablesK. Y. Srinivasan1-4/+4
Correctly type character strings. Reported-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-04Tools: hv: Get rid of some unused variablesK. Y. Srinivasan1-2/+1
Get rid of unused variables. Reported-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-17Tools: hv: Gather ipv[4,6] gateway informationK. Y. Srinivasan1-0/+68
Gather information on the default gateways - ipv4/ipv6. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-17Tools: hv: Represent the ipv6 mask using CIDR notationK. Y. Srinivasan1-10/+36
Transform ipv6 subnet information to CIDR notation. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-17Tools: hv: Gather subnet informationK. Y. Srinivasan1-2/+29
Now, gather sub-net information for the specified interface. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-17Tools: hv: Gather address family informationK. Y. Srinivasan1-0/+11
Now, gather address family information for the specified interface. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-17Tools: hv: Further refactor kvp_get_ip_address()K. Y. Srinivasan1-52/+42
In preparation for making kvp_get_ip_address() more generic, factor out the code for handling IP addresses. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-17Tools: hv: Prepare to expand kvp_get_ip_address() functionalityK. Y. Srinivasan1-45/+84
kvp_get_ip_address() implemented the functionality to retrieve IP address info. Make this function more generic so that we could retrieve additional per-interface information. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16Drivers: hv: kvp: Cleanup error handling in KVPK. Y. Srinivasan1-33/+33
In preparation to implementing IP injection, cleanup the way we propagate and handle errors both in the driver as well as in the user level daemon. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Olaf Hering <olaf@aepfle.de> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16Drivers: hv: Add KVP definitions for IP address injectionK. Y. Srinivasan1-1/+1
Add the necessary definitions for supporting the IP injection functionality. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Olaf Hering <olaf@aepfle.de> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-10Tools: hv: verify origin of netlink connector messageOlaf Hering1-3/+7
The SuSE security team suggested to use recvfrom instead of recv to be certain that the connector message is originated from kernel. CVE-2012-2669 Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Marcus Meissner <meissner@suse.de> Signed-off-by: Sebastian Krahmer <krahmer@suse.de> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-16Tools: hv: Support enumeration from all the poolsK. Y. Srinivasan1-7/+117
We have only supported enumeration only from the AUTO pool. Now support enumeration from all the available pools. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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