glusterfs.git/xlators/features/locks, branch v7dev

Multiple files: reduce work while under lock.

2019-01-29T09:27:22+00:00

Mostly, unlock before logging.
In some cases, moved different code that was not needed
to be under lock (for example, taking time, or malloc'ing)
to be executed before taking the lock.

Note: logging might be slightly less accurate in order, since it may
not be done now under the lock, so order of logs is racy. I think
it's a reasonable compromise.

Compile-tested only!
updates: bz#1193929
Signed-off-by: Yaniv Kaul 

Change-Id: I2438710016afc9f4f62a176ef1a0d3ed793b4f89

locks/fencing: Add a security knob for fencing

2019-01-22T05:23:44+00:00

There is a low level security issue with fencing since one client
can preempt another client's lock.

This patch does not completely eliminate the issue of a client
misbehaving, but certainly it adds a security layer for default use cases
that does not need fencing.

Change-Id: I55cd15f2ed1ae0f2556e3d27a2ef4bc10fdada1c
updates: #466
Signed-off-by: Susant Palai

lock: Add fencing support

2019-01-17T15:33:42+00:00

design reference: https://review.gluster.org/#/c/glusterfs-specs/+/21925/

This patch adds the lock preempt support.

Note: The current model stores lock enforcement information as separate
xattr on disk. There is another effort going in parallel to store this
in stat(x) of the file. This patch is self sufficient to add fencing
support. Based on the availability of the stat(x) support either I will
rebase this patch or we can modify the necessary bits post merging this
patch.

Change-Id: If4a42f3e0afaee1f66cdb0360ad4e0c005b5b017
updates: #466
Signed-off-by: Susant Palai

features/locks: Dump connection_id even for posix locks

2019-01-09T14:18:04+00:00

... in statedump for a better debugging experience.

BEFORE:

posixlk.posixlk[0](ACTIVE)=type=WRITE, whence=0, start=0, len=0,
pid = 13635, owner=2dd2c3a11706dc8c, client=0x7f159012b000,
connection-id=(null), granted at 2018-12-31 14:20:42

connection-id is null above.

AFTER:

posixlk.posixlk[0](ACTIVE)=type=WRITE, whence=0, start=0, len=0,
pid = 10977, owner=b485e33df21bdaa2, client=0x7fa24c01ab90,
connection-id=CTX_ID:68e12340-eed2-4386-bf5e-1f43cf8693d9-GRAPH_ID:0-
PID:10901-HOST:dhcp35-215.lab.eng.blr.redhat.com-PC_NAME:patchy-client-0-
RECON_NO:-0, granted at 2018-12-31 14:33:50

Change-Id: I4608994bacabb558a3be8c1634ee6b1d2d3022e2
fixes: bz#1662679
Signed-off-by: Krutika Dhananjay

locks: handle "clear locks" xattr in fgetxattr too

2018-12-14T04:54:28+00:00

The lock clearing procedure was kicked in only in
getxattr context. We need it to work the same way
if it's triggered via fgetxattr (as is the case
with interrupt handling).

Also cleaned up the instrumentation a bit (more logs,
proper management of allocated data).

updates: #465
Change-Id: Icfca26ee181da3b8e15ca3fcf61cd5702e2730c8
Signed-off-by: Csaba Henk

Multiple posix related files: several modifications

2018-12-14T04:53:36+00:00

Just looked at posix.c and related code and performed
some changes and cleanups. The only important one is #3 below,
but surely the others (#2 and #4) need careful review.
Changes to other files are as they were related to code paths
in posix.c.

I'll send a separate patch for other posix related files.

Main changes:
1. Proper initializtion for parameters, where it made sense.
2. Logged outside the lock in several places.
3. Moved from CALLOC to MALLOC where it made sense.
4. Aligned structures.
5. moved dictionary functions to use _sizen where possible.
(dict_get() -> dict_get_sizen() for example)

Compile-tested only!

Change-Id: Ia84699fb495e06d095339c91c1ba770d1393bb6c
updates: bz#1193929
Signed-off-by: Yaniv Kaul

clang: Fix various missing checks for empty list

2018-12-14T04:33:15+00:00

When using list_for_each_entry(_safe) functions, care needs
to be taken that the list passed in are not empty, as these
functions are not empty list safe.

clag scan reported various points where this this pattern
could be caught, and this patch fixes the same.

Additionally the following changes are present in this patch,
- Added an explicit op_ret setting in error case in the
macro MAKE_INODE_HANDLE to address another clang issue reported
- Minor refactoring of some functions in quota code, to address
possible allocation failures in certain functions (which in turn
cause possible empty lists to be passed around)

Change-Id: I1e761a8d218708f714effb56fa643df2a3ea2cc7
Updates: bz#1622665
Signed-off-by: ShyamsundarR

all: add xlator_api to many translators

2018-12-06T07:54:28+00:00

Fixes: #164
Change-Id: I93ad6f0232a1dc534df099059f69951e1339086f
Signed-off-by: Amar Tumballi

libglusterfs: Move devel headers under glusterfs directory

2018-12-05T21:47:04+00:00

libglusterfs devel package headers are referenced in code using
include semantics for a program, this while it works can be better
especially when dealing with out of tree xlator builds or in
general out of tree devel package usage.

Towards this, the following changes are done,
- moved all devel headers under a glusterfs directory
- Included these headers using system header notation <> in all
code outside of libglusterfs
- Included these headers using own program notation "" within
libglusterfs

This change although big, is just moving around the headers and
making it correct when including these headers from other sources.

This helps us correctly include libglusterfs includes without
namespace conflicts.

Change-Id: Id2a98854e671a7ee5d73be44da5ba1a74252423b
Updates: bz#1193929
Signed-off-by: ShyamsundarR

Multiple xlator .h files: remove unused private gf_* memory types.

2018-11-30T11:51:18+00:00

It seems there were quite a few unused enums (that in turn
cause unndeeded memory allocation) in some xlators.
I've removed them, hopefully not causing any damage.

Compile-tested only!

updates: bz#1193929
Signed-off-by: Yaniv Kaul 

Change-Id: I8252bd763dc1506e2d922496d896cd2fc0886ea7