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Revision 45c6ceb547ad2d98215351974a4686bf8cb13e14 authored by Sage Weil on 11 May 2010, 22:01:51 UTC, committed by Sage Weil on 11 May 2010, 22:17:40 UTC 
ceph: zero unused message header, footer fields
 
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>
1 parent 9abf82b
Raw File
msgpool.h 
#ifndef _FS_CEPH_MSGPOOL
#define _FS_CEPH_MSGPOOL

#include "messenger.h"

/*
 * we use memory pools for preallocating messages we may receive, to
 * avoid unexpected OOM conditions.
 */
struct ceph_msgpool {
	spinlock_t lock;
	int front_len;          /* preallocated payload size */
	struct list_head msgs;  /* msgs in the pool; each has 1 ref */
	int num, min;           /* cur, min # msgs in the pool */
	bool blocking;
	wait_queue_head_t wait;
};

extern int ceph_msgpool_init(struct ceph_msgpool *pool,
			     int front_len, int size, bool blocking);
extern void ceph_msgpool_destroy(struct ceph_msgpool *pool);
extern int ceph_msgpool_resv(struct ceph_msgpool *, int delta);
extern struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *,
					 int front_len);
extern void ceph_msgpool_put(struct ceph_msgpool *, struct ceph_msg *);

#endif
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