core: add an extra flag to readv()/writev() API

needed to implement a proper handling of open flag alterations
using fcntl() on fd.

Change-Id: Ic280d5db6f1dc0418d5c439abb8db1d3ac21ced0
Signed-off-by: Amar Tumballi <amar@gluster.com>
BUG: 782265
Reviewed-on: http://review.gluster.com/2723
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

7 files changed, 18 insertions, 12 deletions

diff --git a/xlators/cluster/afr/src/afr-inode-read.c b/xlators/cluster/afr/src/afr-inode-read.c
index 5b534cf37..0ef0f4f86 100644
--- a/xlators/cluster/afr/src/afr-inode-read.c
+++ b/xlators/cluster/afr/src/afr-inode-read.c
@@ -1083,7 +1083,8 @@ afr_readv_cbk (call_frame_t *frame, void *cookie,
                                    children[next_call_child],
                                    children[next_call_child]->fops->readv,
                                    local->fd, local->cont.readv.size,
-                                   local->cont.readv.offset);
+                                   local->cont.readv.offset,
+                                   local->cont.readv.flags);
         }
 
 out:
@@ -1098,7 +1099,7 @@ out:
 
 int32_t
 afr_readv (call_frame_t *frame, xlator_t *this,
-           fd_t *fd, size_t size, off_t offset)
+           fd_t *fd, size_t size, off_t offset, uint32_t flags)
 {
         afr_private_t * priv       = NULL;
         afr_local_t   * local      = NULL;
@@ -1143,6 +1144,7 @@ afr_readv (call_frame_t *frame, xlator_t *this,
 
         local->cont.readv.size       = size;
         local->cont.readv.offset     = offset;
+        local->cont.readv.flags      = flags;
 
         ret = afr_open_fd_fix (frame, this, _gf_false);
         if (ret) {
@@ -1153,7 +1155,7 @@ afr_readv (call_frame_t *frame, xlator_t *this,
                            (void *) (long) call_child,
                            children[call_child],
                            children[call_child]->fops->readv,
-                           fd, size, offset);
+                           fd, size, offset, flags);
 
         ret = 0;
 out:
diff --git a/xlators/cluster/afr/src/afr-inode-read.h b/xlators/cluster/afr/src/afr-inode-read.h
index 8af3ed1b5..5ec7411b1 100644
--- a/xlators/cluster/afr/src/afr-inode-read.h
+++ b/xlators/cluster/afr/src/afr-inode-read.h
@@ -38,7 +38,7 @@ afr_readlink (call_frame_t *frame, xlator_t *this,
 
 int32_t
 afr_readv (call_frame_t *frame, xlator_t *this,
-	   fd_t *fd, size_t size, off_t offset);
+	   fd_t *fd, size_t size, off_t offset, uint32_t flags);
 
 int32_t
 afr_getxattr (call_frame_t *frame, xlator_t *this,
diff --git a/xlators/cluster/afr/src/afr-inode-write.c b/xlators/cluster/afr/src/afr-inode-write.c
index 2a7e0e736..72dcdc478 100644
--- a/xlators/cluster/afr/src/afr-inode-write.c
+++ b/xlators/cluster/afr/src/afr-inode-write.c
@@ -157,6 +157,7 @@ afr_writev_wind (call_frame_t *frame, xlator_t *this)
                                            local->cont.writev.vector,
                                            local->cont.writev.count,
                                            local->cont.writev.offset,
+                                           local->cont.writev.flags,
                                            local->cont.writev.iobref);
 
                         if (!--call_count)
@@ -441,7 +442,7 @@ out:
 int
 afr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd,
             struct iovec *vector, int32_t count, off_t offset,
-            struct iobref *iobref)
+            uint32_t flags, struct iobref *iobref)
 {
         afr_private_t * priv  = NULL;
         afr_local_t   * local = NULL;
@@ -466,6 +467,7 @@ afr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd,
         local->cont.writev.vector     = iov_dup (vector, count);
         local->cont.writev.count      = count;
         local->cont.writev.offset     = offset;
+        local->cont.writev.flags      = flags;
         local->cont.writev.iobref     = iobref_ref (iobref);
 
         local->fd                = fd_ref (fd);
diff --git a/xlators/cluster/afr/src/afr-inode-write.h b/xlators/cluster/afr/src/afr-inode-write.h
index bdd0b4866..729a490d5 100644
--- a/xlators/cluster/afr/src/afr-inode-write.h
+++ b/xlators/cluster/afr/src/afr-inode-write.h
@@ -37,9 +37,9 @@ afr_fchmod (call_frame_t *frame, xlator_t *this,
 	    fd_t *fd, mode_t mode);
 
 int32_t
-afr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, 
+afr_writev (call_frame_t *frame, xlator_t *this, fd_t *fd,
 	    struct iovec *vector, int32_t count, off_t offset,
-            struct iobref *iobref);
+            uint32_t flags, struct iobref *iobref);
 
 int32_t
 afr_truncate (call_frame_t *frame, xlator_t *this,
diff --git a/xlators/cluster/afr/src/afr-self-heal-algorithm.c b/xlators/cluster/afr/src/afr-self-heal-algorithm.c
index cb1516d84..629822a8e 100644
--- a/xlators/cluster/afr/src/afr-self-heal-algorithm.c
+++ b/xlators/cluster/afr/src/afr-self-heal-algorithm.c
@@ -519,7 +519,7 @@ sh_loop_read_cbk (call_frame_t *loop_frame, void *cookie,
                                    priv->children[i],
                                    priv->children[i]->fops->writev,
                                    loop_sh->healing_fd, vector, count,
-                                   loop_sh->offset, iobref);
+                                   loop_sh->offset, 0, iobref);
 
                 if (!--call_count)
                         break;
@@ -546,7 +546,7 @@ sh_loop_read (call_frame_t *loop_frame, xlator_t *this)
                            priv->children[loop_sh->source],
                            priv->children[loop_sh->source]->fops->readv,
                            loop_sh->healing_fd, loop_sh->block_size,
-                           loop_sh->offset);
+                           loop_sh->offset, 0);
 
         return 0;
 }
diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h
index 0c4bf5f63..003d666e0 100644
--- a/xlators/cluster/afr/src/afr.h
+++ b/xlators/cluster/afr/src/afr.h
@@ -475,6 +475,7 @@ typedef struct _afr_local {
                         size_t size;
                         off_t offset;
                         int last_index;
+                        uint32_t flags;
                 } readv;
 
                 /* dir read */
@@ -508,6 +509,7 @@ typedef struct _afr_local {
                         struct iobref *iobref;
                         int32_t count;
                         off_t offset;
+                        uint32_t flags;
                 } writev;
 
                 struct {
diff --git a/xlators/cluster/afr/src/pump.c b/xlators/cluster/afr/src/pump.c
index 8ef30edba..df0b31166 100644
--- a/xlators/cluster/afr/src/pump.c
+++ b/xlators/cluster/afr/src/pump.c
@@ -1987,7 +1987,7 @@ pump_writev (call_frame_t *frame,
              fd_t *fd,
              struct iovec *vector,
              int32_t count,
-             off_t off,
+             off_t off, uint32_t flags,
              struct iobref *iobref)
 {
         afr_private_t *priv  = NULL;
@@ -2000,11 +2000,11 @@ pump_writev (call_frame_t *frame,
                             fd,
                             vector,
                             count,
-                            off,
+                            off, flags,
                             iobref);
                 return 0;
         }
-        afr_writev (frame, this, fd, vector, count, off, iobref);
+        afr_writev (frame, this, fd, vector, count, off, flags, iobref);
         return 0;
 
 }