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libceph: check length of osdmap osd arrays 

Check length of osd_state, osd_weight and osd_addr arrays.  They
should all have exactly max_osd elements after the call to
osdmap_set_max_osd().

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Ilya Dryomov 2014-03-13 16:36:14 +02:00 committed by Sage Weil
parent 3977058c46
commit 2d88b2e081
1 changed files with 10 additions and 4 deletions
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14
net/ceph/osdmap.c
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@ -745,19 +745,25 @@ static int osdmap_decode(void **p, void *end, struct ceph_osdmap *map)
if (err)
goto bad;
/* osds */
/* osd_state, osd_weight, osd_addrs->client_addr */
ceph_decode_need(p, end, 3*sizeof(u32) +
map->max_osd*(1 + sizeof(*map->osd_weight) +
sizeof(*map->osd_addr)), e_inval);
*p += 4; /* skip length field (should match max) */
if (ceph_decode_32(p) != map->max_osd)
goto e_inval;
ceph_decode_copy(p, map->osd_state, map->max_osd);
*p += 4; /* skip length field (should match max) */
if (ceph_decode_32(p) != map->max_osd)
goto e_inval;
for (i = 0; i < map->max_osd; i++)
map->osd_weight[i] = ceph_decode_32(p);
*p += 4; /* skip length field (should match max) */
if (ceph_decode_32(p) != map->max_osd)
goto e_inval;
ceph_decode_copy(p, map->osd_addr, map->max_osd*sizeof(*map->osd_addr));
for (i = 0; i < map->max_osd; i++)
ceph_decode_addr(&map->osd_addr[i]);