glusterfs.git/api/src/glfs-handleops.c, branch v3.5.6

api: versioned symbols in libgfapi.so for compatibility

2015-02-09T12:16:53+00:00

Use versioned symbols to keep libgfapi at libgfapi.so.0.0.0

Some nits uncovered:

+ there are a couple functions declared that do not have an
  associated definition, e.g. glfs_truncate(), glfs_caller_specific_init()

+ there are five private/internal functions used by heal/src/glfsheal
  and the gfapi master xlator (glfs-master.c): glfs_loc_touchup(),
  glfs_active_subvol(), and glfs_subvol_done(), glfs_init_done(),
  glfs_resolve_at(); which are not declared in glfs.h;

+ for this initial pass at versioned symbols, we use the earliest version
  of all public symbols, i.e. those for which there are declarations in
  glfs.h or glfs-handles.h.
  Further investigation as we do backports to 3.6, 3.4, and 3.4
  will be required to determine if older implementations need to
  be preserved (forward ported) and their associated alias(es) and
  symbol version(s) defined.

FWIW, we should consider linking all of our libraries with a map, it'll
result in a cleaner ABI. Perhaps something for an intern to do or a
Google Summer of Code project.

Change-Id: I513b9aad9c5fd7d8b34ff33acac35f37b6baaab6
BUG: 1160711
Signed-off-by: Kaleb S. KEITHLEY 
Reviewed-on: http://review.gluster.org/9056
Tested-by: Gluster Build System 
Reviewed-by: Niels de Vos

libgfapi: Added Handle-based ops to get/set/remove extended attributes in the libgfapi.

2014-05-22T09:33:49+00:00

Cherry picked from commit Change-Id: I1a8e666018d7b93e0bba2d9882935681da909980
and Change-Id: I62f63da37edf722d6d79c75f72ee7403e93e4936

> BUG: 1089414
> Signed-off-by: Soumya Koduri 
> Reviewed-on: http://review.gluster.org/7308
> Reviewed-by: Vijay Bellur 
> Tested-by: Vijay Bellur 

This patch differs a bit from its earlier master patch -
* 'DECODE_SYNCOP_ERR' macro is not defined in this code branch.
So lines where this macro is used are skipped.
* 'syncop_removexattr(..)' definition differs from the one in the master branch.

BUG: 1099878
Change-Id: I1e9cce4efeec038b9736065d39887c35752caead
Signed-off-by: Soumya Koduri 
Reviewed-on: http://review.gluster.org/7825
Reviewed-by: Raghavendra G 
Tested-by: Gluster Build System 
Reviewed-by: Niels de Vos

syncops: expose @flags in syncop_rmdir()

2013-11-21T21:08:32+00:00

Change-Id: I9b73c1db728e4cb3948fc118cceb292b21d48b96
BUG: 1021686
Signed-off-by: Anand Avati 
Reviewed-on: http://review.gluster.org/6112
Reviewed-by: Amar Tumballi 
Tested-by: Gluster Build System

gfapi: object handle based API extensions

2013-10-11T19:16:46+00:00

There is an ongoing effort to integrate NFS Ganesha (
https://github.com/nfs-ganesha/nfs-ganesha/wiki ) with GlusterFS as one of
the file system back ends.

Towards this we need extensions to gfapi that can handle object based
operations. Meaning, instead of using full paths or relative paths from
cwd, it is required that we can work with APIs, like the *at POSIX
variants, to be able to create, lookup, open etc. files and directories.
Hence the objects are the files or directories themselves and we give out
handles to these objects that can be used for further operations.

This code drop is an initial implementation of the proposed APIs.

The new APIs are implemented as glfs_h_XXX variants in the file
glfs-handleops.c to mirror glfs-fops.c style. The code leverages holding
onto inode references and doling these out as opaque/cookie type objects to
the callers, to enable them to be used as handles in other operations.

An fd based approach was considered, but due to the extra footprint that
the fd structure and its counterparts would incur, this was dropped to take
the approach of holding inode references themselves.

Tested by extending glfsxmp.c to invoke and exercise the added APIs, and
further tested with a reference integration of the same as an FSAL with NFS
Ganesha.

Change-Id: I23629c99e905b54070fa2e6565147812e5f3fa5d
BUG: 1016000
Signed-off-by: R.Shyamsundar 
Reviewed-on: http://review.gluster.org/5936
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati