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authorIlya Dryomov <ilya.dryomov@inktank.com>2014-03-13 16:36:16 +0200
committerSage Weil <sage@inktank.com>2014-04-04 21:07:47 -0700
commit53bbaba9d811f75acc20038bfd707a4cfdc4571f (patch)
tree56c1aa1d31330fb1b687d159ee89124f46f90861 /net/ceph
parent9464d00862ea6a5c0edc7118c86bdfa71a95190e (diff)
downloadop-kernel-dev-53bbaba9d811f75acc20038bfd707a4cfdc4571f.zip
op-kernel-dev-53bbaba9d811f75acc20038bfd707a4cfdc4571f.tar.gz
libceph: fix and clarify ceph_decode_need() sizes
Sum up sizeof(...) results instead of (incorrectly) hard-coding the number of bytes, expressed in ints and longs. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
Diffstat (limited to 'net/ceph')
-rw-r--r--net/ceph/osdmap.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 07fa369..1164910 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -706,7 +706,9 @@ static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map)
goto e_inval;
}
- ceph_decode_need(p, end, 2*sizeof(u64)+6*sizeof(u32), e_inval);
+ /* fsid, epoch, created, modified */
+ ceph_decode_need(p, end, sizeof(map->fsid) + sizeof(u32) +
+ sizeof(map->created) + sizeof(map->modified), e_inval);
ceph_decode_copy(p, &map->fsid, sizeof(map->fsid));
epoch = map->epoch = ceph_decode_32(p);
ceph_decode_copy(p, &map->created, sizeof(map->created));
@@ -878,8 +880,9 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
goto e_inval;
}
- ceph_decode_need(p, end, sizeof(fsid)+sizeof(modified)+2*sizeof(u32),
- e_inval);
+ /* fsid, epoch, modified, new_pool_max, new_flags */
+ ceph_decode_need(p, end, sizeof(fsid) + sizeof(u32) + sizeof(modified) +
+ sizeof(u64) + sizeof(u32), e_inval);
ceph_decode_copy(p, &fsid, sizeof(fsid));
epoch = ceph_decode_32(p);
BUG_ON(epoch != map->epoch+1);
@@ -913,10 +916,8 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
if (new_pool_max >= 0)
map->pool_max = new_pool_max;
- ceph_decode_need(p, end, 5*sizeof(u32), e_inval);
-
/* new max? */
- max = ceph_decode_32(p);
+ ceph_decode_32_safe(p, end, max, e_inval);
if (max >= 0) {
err = osdmap_set_max_osd(map, max);
if (err)
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