diff options
| author | Anand Avati <avati@redhat.com> | 2013-06-16 06:19:52 -0700 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2013-06-20 01:45:50 -0700 |
| commit | d7e80787fc61a4fe9e72ff80565dc720ac29441a (patch) | |
| tree | db86c0bd03339b5265b7c6da1e6ed025d5c61812 /api | |
| parent | cc9ca7d2b2f5c91d80265c28ca724cb233c2bd77 (diff) | |
gfapi: fix read past EOF in glfs_preadv()
When syncop_preadv() returns 0, we are returning @size as-is
(without modifying user passed buffer). This results in
junk data being read when read offset is at or beyond EOF.
Change-Id: I8aa9c957359f9a52833b944b452f501b6f5538d3
BUG: 953694
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/5236
Reviewed-by: Raghavendra Talur <rtalur@redhat.com>
Reviewed-by: José Rivera <jrivera@redhat.com>
Tested-by: José Rivera <jrivera@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'api')
| -rw-r--r-- | api/src/glfs-fops.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/api/src/glfs-fops.c b/api/src/glfs-fops.c index e30a3548ad0..fee97abda1d 100644 --- a/api/src/glfs-fops.c +++ b/api/src/glfs-fops.c @@ -451,8 +451,8 @@ glfs_preadv (struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt, off_t offset, int flags) { xlator_t *subvol = NULL; - int ret = -1; - size_t size = -1; + ssize_t ret = -1; + ssize_t size = -1; struct iovec *iov = NULL; int cnt = 0; struct iobref *iobref = NULL; @@ -489,13 +489,14 @@ glfs_preadv (struct glfs_fd *glfd, const struct iovec *iovec, int iovcnt, if (iobref) iobref_unref (iobref); + ret = size; out: if (fd) fd_unref (fd); glfs_subvol_done (glfd->fs, subvol); - return size; + return ret; } |