linux-stable.git/tools/hv, branch linux-4.9.y

Tools: hv: kvp: eliminate 'may be used uninitialized' warning

2019-09-10T09:31:02+00:00

[ Upstream commit 89eb4d8d25722a0a0194cf7fa47ba602e32a6da7 ]

When building hv_kvp_daemon GCC-8.3 complains:

hv_kvp_daemon.c: In function ‘kvp_get_ip_info.constprop’:
hv_kvp_daemon.c:812:30: warning: ‘ip_buffer’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  struct hv_kvp_ipaddr_value *ip_buffer;

this seems to be a false positive: we only use ip_buffer when
op == KVP_OP_GET_IP_INFO and it is only unset when op == KVP_OP_ENUMERATE.

Silence the warning by initializing ip_buffer to NULL.

Signed-off-by: Vitaly Kuznetsov 
Signed-off-by: Sasha Levin

tools: hv: fix KVP and VSS daemons exit code

2019-09-06T08:19:43+00:00

[ Upstream commit b0995156071b0ff29a5902964a9dc8cfad6f81c0 ]

HyperV KVP and VSS daemons should exit with 0 when the '--help'
or '-h' flags are used.

Signed-off-by: Adrian Vladu 

Cc: "K. Y. Srinivasan" 
Cc: Haiyang Zhang 
Cc: Stephen Hemminger 
Cc: Sasha Levin 
Cc: Alessandro Pilotti 
Signed-off-by: Sasha Levin

Tools: hv: Fix a bug in the key delete code

2018-09-26T06:36:35+00:00

commit 86503bd35dec0ce363e9fdbf5299927422ed3899 upstream.

Fix a bug in the key delete code - the num_records range
from 0 to num_records-1.

Signed-off-by: K. Y. Srinivasan 
Reported-by: David Binderman 
Cc: 
Reviewed-by: Michael Kelley 
Signed-off-by: Greg Kroah-Hartman

hv: kvp: Avoid reading past allocated blocks from KVP file

2017-12-14T08:28:11+00:00

commit 297d6b6e56c2977fc504c61bbeeaa21296923f89 upstream.

While reading in more than one block (50) of KVP records, the allocation
goes per block, but the reads used the total number of allocated records
(without resetting the pointer/stream). This causes the records buffer to
overrun when the refresh reads more than one block over the previous
capacity (e.g. reading more than 100 KVP records whereas the in-memory
database was empty before).

Fix this by reading the correct number of KVP records from file each time.

Signed-off-by: Paul Meyer 
Signed-off-by: Long Li 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: utils: Check VSS daemon is listening before a hot backup

2016-09-02T15:22:51+00:00

Hyper-V host will send a VSS_OP_HOT_BACKUP request to check if guest is
ready for a live backup/snapshot. The driver should respond to the check
only if the daemon is running and listening to requests. This allows the
host to fallback to standard snapshots in case the VSS daemon is not
running.

Signed-off-by: Alex Ng 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Tools: hv: kvp: ensure kvp device fd is closed on exec

2016-08-31T11:05:41+00:00

KVP daemon does fork()/exec() (with popen()) so we need to close our fds
to avoid sharing them with child processes. The immediate implication of
not doing so I see is SELinux complaining about 'ip' trying to access
'/dev/vmbus/hv_kvp'.

Signed-off-by: Vitaly Kuznetsov 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

tools: hv: Add a script to help bonding synthetic and VF NICs

2016-07-12T17:41:53+00:00

This script helps to create bonding network devices based on synthetic NIC
(the virtual network adapter usually provided by Hyper-V) and the matching
VF NIC (SRIOV virtual function). So the synthetic NIC and VF NIC can
function as one network device, and fail over to the synthetic NIC if VF is
down.

Mayjor distros (RHEL, Ubuntu, SLES) supported by Hyper-V are supported by
this script.

Signed-off-by: Haiyang Zhang 
Reviewed-by: K. Y. Srinivasan 
Signed-off-by: David S. Miller

tools: hv: lsvmbus: add pci pass-through UUID

2016-05-01T16:23:14+00:00

lsvmbus keeps its own copy of all VMBus UUIDs, add PCIe pass-through
device there to not report 'Unknown' for such devices.

Signed-off-by: Vitaly Kuznetsov 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

tools/hv: Use include/uapi with __EXPORTED_HEADERS__

2016-02-08T05:34:12+00:00

Use the local uapi headers to keep in sync with "recently" added #define's
(e.g. VSS_OP_REGISTER1).

Fixes: 3eb2094c59e8 ("Adding makefile for tools/hv")
Cc: 
Signed-off-by: Kamal Mostafa 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

tools: hv: vss: fix the write()'s argument: error -> vss_msg

2015-12-15T03:15:05+00:00

Fix the write()'s argument in the daemon code.

Cc: Vitaly Kuznetsov 
Cc: "K. Y. Srinivasan" 
Signed-off-by: Dexuan Cui 
Cc: stable@vger.kernel.org
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman