libglusterfs: Add put fop

Problem: It had been a longtime request to implement put fop
in gluster. put fop in gluster may not have the exact sementics
of HTTP PUT, but can be easily extended to do so. The subsequent
patches, will contain more semantics on the put fop and its
guarentees.

Why compound fop framework is not used for put?
Compound fop framework currently doesn't allow compounding of
entry fop and inode fops, i.e. fops on multiple inodes cannot be
combined in compound fop.

Updates #353
Change-Id: Idb7891b3e056d46d570bb7e31bad1b6a28656ada
Signed-off-by: Poornima G <pgurusid@redhat.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/libglusterfs/src/syncop.c b/libglusterfs/src/syncop.c
index b36c88dc829..a4882f5eef2 100644
--- a/libglusterfs/src/syncop.c
+++ b/libglusterfs/src/syncop.c
@@ -2080,6 +2080,55 @@ syncop_create (xlator_t *subvol, loc_t *loc, int32_t flags, mode_t mode,
 
 }
 
+int32_t
+syncop_put_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                int32_t op_ret, int32_t op_errno, inode_t *inode,
+                struct iatt *buf, struct iatt *preparent,
+                struct iatt *postparent, dict_t *xdata)
+{
+        struct syncargs *args = NULL;
+
+        args = cookie;
+
+        args->op_ret   = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata  = dict_ref (xdata);
+
+        if (buf)
+                args->iatt1 = *buf;
+
+        __wake (args);
+
+        return 0;
+}
+
+int
+syncop_put (xlator_t *subvol, loc_t *loc, mode_t mode, mode_t umask,
+            uint32_t flags, struct iovec *vector, int32_t count,
+            off_t offset, struct iobref *iobref, dict_t *xattr,
+            struct iatt *iatt, dict_t *xdata_in, dict_t **xdata_out)
+{
+        struct syncargs args = {0, };
+
+        SYNCOP (subvol, (&args), syncop_put_cbk, subvol->fops->put,
+                loc, mode, umask, flags, (struct iovec *) vector, count,
+                offset, iobref, xattr, xdata_in);
+
+        if (iatt)
+                *iatt = args.iatt1;
+
+        if (xdata_out)
+                *xdata_out = args.xdata;
+        else if (args.xdata)
+                dict_unref (args.xdata);
+
+        if (args.op_ret < 0)
+                return -args.op_errno;
+        return args.op_ret;
+
+}
+
 int
 syncop_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                    int op_ret, int op_errno, struct iatt *preparent,