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ceph: zero unused message header, footer fields

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We shouldn't leak any prior memory contents to other parties.  And random
data, particularly in the 'version' field, can cause problems down the
line.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2010-05-11 15:01:51 -07:00
parent 9abf82b8bc
commit 45c6ceb547
1 changed files with 5 additions and 1 deletions
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6
fs/ceph/messenger.c
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@ -2085,15 +2085,19 @@ struct ceph_msg *ceph_msg_new(int type, int front_len,
kref_init(&m->kref);
INIT_LIST_HEAD(&m->list_head);
m->hdr.tid = 0;
m->hdr.type = cpu_to_le16(type);
m->hdr.priority = cpu_to_le16(CEPH_MSG_PRIO_DEFAULT);
m->hdr.version = 0;
m->hdr.front_len = cpu_to_le32(front_len);
m->hdr.middle_len = 0;
m->hdr.data_len = cpu_to_le32(page_len);
m->hdr.data_off = cpu_to_le16(page_off);
m->hdr.priority = cpu_to_le16(CEPH_MSG_PRIO_DEFAULT);
m->hdr.reserved = 0;
m->footer.front_crc = 0;
m->footer.middle_crc = 0;
m->footer.data_crc = 0;
m->footer.flags = 0;
m->front_max = front_len;
m->front_is_vmalloc = false;
m->more_to_follow = false;