diff options
| author | Krutika Dhananjay <kdhananj@redhat.com> | 2016-06-07 17:15:56 +0530 |
|---|---|---|
| committer | Atin Mukherjee <amukherj@redhat.com> | 2016-06-09 22:05:46 -0700 |
| commit | 79dfe7d197ced45bd3b84f71d5c889e95f4dec1a (patch) | |
| tree | 5af6a4aaa87a022eabcc9201dce9eba766ae7dbb /libglusterfs/src/fd.c | |
| parent | 3bd4b1529817d4ce40c2b9654044e6230cbf7233 (diff) | |
libglusterfs: Negate all but O_DIRECT flag if present on anon fds
This is to prevent any unforeseen problems that might arise due to
writevs and readvs being wound with @flag parameter containing
O_TRUNC or O_APPEND especially wrt translators like sharding and ec
where O_TRUNC write or O_APPEND write on individual shards/fragments
is not the same as O_TRUNC write or O_APPEND write as expected by the
application.
Change-Id: I9e5206a6ce2b1b70df61ff23b1c961cf25bf7ff9
BUG: 1342171
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/14665
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Smoke: Gluster Build System <jenkins@build.gluster.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Diffstat (limited to 'libglusterfs/src/fd.c')
| -rw-r--r-- | libglusterfs/src/fd.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/libglusterfs/src/fd.c b/libglusterfs/src/fd.c index 7177fa275db..118f876c396 100644 --- a/libglusterfs/src/fd.c +++ b/libglusterfs/src/fd.c @@ -812,17 +812,11 @@ fd_anonymous_with_flags (inode_t *inode, int32_t flags) LOCK (&inode->lock); { - if (flags == 0) + if (flags & O_DIRECT) + flags = GF_ANON_FD_FLAGS | O_DIRECT; + else flags = GF_ANON_FD_FLAGS; - /* If this API is ever called with O_SYNC or O_DSYNC in @flags, - * reset the bits associated with these flags before calling - * __fd_anonymous(). That way, posix will do the open() without - * these flags. And subsequently, posix_writev() (mostly) will - * do the write within inode->lock on an fd without O_SYNC or - * O_DSYNC and in its place to an fsync() outside of the locks - * to simulate the effect of using these flags. - */ - flags &= (~(O_SYNC|O_DSYNC)); + fd = __fd_anonymous (inode, flags); } UNLOCK (&inode->lock); |