linux-stable.git/tools/hv, branch linux-3.16.y

tools: hv: fcopy: set 'error' in case an unknown operation was requested

2018-12-16T22:09:31+00:00

commit c2d68afba86d1ff01e7300c68bc16a9234dcd8e9 upstream.

'error' variable is left uninitialized in case we see an unknown operation.
As we don't immediately return and proceed to pwrite() we need to set it
to something, HV_E_FAIL sounds good enough.

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

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

2018-12-16T22:09:16+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 
Reviewed-by: Michael Kelley 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Ben Hutchings

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

2018-03-03T15:51:37+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 
Signed-off-by: Ben Hutchings

Tools: hv: Handle the case when the target file exists correctly

2014-04-16T21:10:36+00:00

Return the appropriate error code and handle the case when the target
file exists correctly. This fixes a bug.

Signed-off-by: K. Y. Srinivasan 
Cc:  [3.14]
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Implement the file copy service

2014-02-18T18:53:48+00:00

Implement the file copy service for Linux guests on Hyper-V. This permits the
host to copy a file (over VMBUS) into the guest. This facility is part of
"guest integration services" supported on the Windows platform.
Here is a link that provides additional details on this functionality:

http://technet.microsoft.com/en-us/library/dn464282.aspx

In V1 version of the patch I have addressed comments from
Olaf Hering  and Dan Carpenter 

In V2 version of this patch I did some minor cleanup (making some globals
static). In V4 version of the patch I have addressed all of Olaf's
most recent set of comments/concerns.

In V5 version of the patch I had addressed Greg's most recent comments.
I would like to thank Greg for suggesting that I use misc device; it has
significantly simplified the code.

In V6 version of the patch I have cleaned up error message based on Olaf's
comments. I have also rebased the patch based on the current tip.

In this version of the patch, I have addressed the latest comments from Greg.

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

Tools: hv: vssdaemon: Ignore VFAT mounts during the Freeze operation

2014-02-15T19:53:39+00:00

If the guest has a FAT file system mounted, skip it during the FREEZE
operation. With this change we can support host initiated backup of
the guest even when the guest may have FAT file systems mounted.

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

Adding makefile for tools/hv

2014-02-15T19:52:35+00:00

Currently, there is no makefile for the Hyper-V tools.
This patch adds the missing makefile, and adds it to the main tools makefile.

Signed-off-by: Bjarke Istrup Pedersen 
Signed-off-by: Greg Kroah-Hartman

Tools: hv: remove inclusion of linux/types.h

2013-12-09T06:47:12+00:00

With very old libc headers the inclusion of sys/types.h causes conflicts
with linux/types.h. Since the latter is not required anyway, remove it
from the source files. If any of the headers really needs linux/types.h
it has to include it itself.

Signed-off-by: Olaf Hering 
Signed-off-by: Greg Kroah-Hartman

Tools: hv: use single send+recv buffer

2013-09-26T19:03:31+00:00

send_buffer is used only once during registration. To reduce runtime
memory usage reuse the recv_buffer for registration. Also use
NLMSG_LENGTH instead of NLMSG_HDRLEN to take alignment into account.

Signed-off-by: Olaf Hering 
Signed-off-by: Greg Kroah-Hartman

Tools: hv: cache FQDN in kvp_daemon to avoid timeouts

2013-09-26T19:03:31+00:00

kvp_daemon does some operations which take an unpredicable amount of
time. In addition the kernel driver gives the kvp_daemon a 5 second
timeout to respond to message from the host. If an operation such as
getaddrinfo takes a long time and the timeout triggers then netlink
errors occour. As a result of such errors the daemon just terminates and
the service becomes unavailable.

Idendifying and fixing these shortcomings in the kernel-userland
communication protocol will be done in separate patches. This change
fixes just one obvious timeout bug.

Update kvp_get_domain_name to not return a value, better diagnostic for
the consumer of the hostname string, remove trailing newline in error
case, use snprintf to not overrun output buffer, get hostname only once
and return the cached result.

Signed-off-by: Olaf Hering 
Signed-off-by: Greg Kroah-Hartman