libglusterfs: Even anonymous fds must have fd->flags set

We do not set the same flags to anonymous fd that posix uses to open
an anonymous fd in the backend. If there are any xlators which rely on
these flags for their operation they may not work well.

Add proper flags to anonymous fds at the time of their creation and
refer to them for subsequent operations.

Change-Id: Ia99b7ea7d38839f099c7b4aae3c7ead123bc8c67
BUG: 1211221
Signed-off-by: Raghavendra Talur <rtalur@redhat.com>
Reviewed-on: http://review.gluster.org/10219
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: soumya k <skoduri@redhat.com>
Reviewed-by: Poornima G <pgurusid@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>

1 files changed, 13 insertions, 5 deletions

diff --git a/xlators/storage/posix/src/posix-helpers.c b/xlators/storage/posix/src/posix-helpers.c
index e0cb6b8a755..a89da58ef7c 100644
--- a/xlators/storage/posix/src/posix-helpers.c
+++ b/xlators/storage/posix/src/posix-helpers.c
@@ -1566,10 +1566,6 @@ __posix_fd_ctx_get (fd_t *fd, xlator_t *this, struct posix_fd **pfd_p)
                 goto out;
         }
 
-        if (!fd_is_anonymous(fd))
-                /* anonymous fd */
-                goto out;
-
         MAKE_HANDLE_PATH (real_path, this, fd->inode->gfid, NULL);
         if (!real_path) {
                 gf_msg (this->name, GF_LOG_ERROR, 0,
@@ -1580,6 +1576,14 @@ __posix_fd_ctx_get (fd_t *fd, xlator_t *this, struct posix_fd **pfd_p)
                 goto out;
         }
 
+        if (!fd_is_anonymous(fd)) {
+                gf_log (this->name, GF_LOG_ERROR,
+                        "Failed to get fd context for a non-anonymous fd, "
+                        "file: %s, gfid: %s", real_path,
+                        uuid_utoa (fd->inode->gfid));
+                goto out;
+        }
+
         pfd = GF_CALLOC (1, sizeof (*pfd), gf_posix_mt_posix_fd);
         if (!pfd) {
                 goto out;
@@ -1596,8 +1600,12 @@ __posix_fd_ctx_get (fd_t *fd, xlator_t *this, struct posix_fd **pfd_p)
                 _fd = dirfd (dir);
         }
 
+        /* Using fd->flags in case we choose to have anonymous
+         * fds with different flags some day. As of today it
+         * would be GF_ANON_FD_FLAGS and nothing else.
+         */
         if (fd->inode->ia_type == IA_IFREG) {
-                _fd = open (real_path, O_RDWR|O_LARGEFILE);
+                _fd = open (real_path, fd->flags);
                 if (_fd == -1) {
                         GF_FREE (pfd);
                         pfd = NULL;