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b6238738ea
This removes the opencoded payload freeing in the client, to use the shared virNetMessageClearPayload call. Two changes: - ClearPayload sets nfds=0, which fixes a potential crash if an error path called virNetMessageFree/Clear on the message after fds was free'd - We drop the inner loop VIR_FORCE_CLOSE... this may mean fds are kept open a little bit longer if the call is blocking but in practice I don't think it will have any effect
105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
/*
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* virnetmessage.h: basic RPC message encoding/decoding
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*
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* Copyright (C) 2010-2011 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#ifndef __VIR_NET_MESSAGE_H__
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# define __VIR_NET_MESSAGE_H__
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# include "virnetprotocol.h"
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typedef struct virNetMessageHeader *virNetMessageHeaderPtr;
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typedef struct virNetMessageError *virNetMessageErrorPtr;
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typedef struct _virNetMessage virNetMessage;
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typedef virNetMessage *virNetMessagePtr;
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typedef void (*virNetMessageFreeCallback)(virNetMessagePtr msg, void *opaque);
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struct _virNetMessage {
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bool tracked;
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char *buffer; /* Initially VIR_NET_MESSAGE_INITIAL + VIR_NET_MESSAGE_LEN_MAX */
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/* Maximum VIR_NET_MESSAGE_MAX + VIR_NET_MESSAGE_LEN_MAX */
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size_t bufferLength;
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size_t bufferOffset;
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virNetMessageHeader header;
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virNetMessageFreeCallback cb;
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void *opaque;
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size_t nfds;
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int *fds;
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size_t donefds;
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virNetMessagePtr next;
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};
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virNetMessagePtr virNetMessageNew(bool tracked);
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void virNetMessageClearPayload(virNetMessagePtr msg);
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void virNetMessageClear(virNetMessagePtr);
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void virNetMessageFree(virNetMessagePtr msg);
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virNetMessagePtr virNetMessageQueueServe(virNetMessagePtr *queue)
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ATTRIBUTE_NONNULL(1);
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void virNetMessageQueuePush(virNetMessagePtr *queue,
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virNetMessagePtr msg)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
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int virNetMessageEncodeHeader(virNetMessagePtr msg)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetMessageDecodeLength(virNetMessagePtr msg)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetMessageDecodeHeader(virNetMessagePtr msg)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetMessageEncodePayload(virNetMessagePtr msg,
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xdrproc_t filter,
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void *data)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetMessageDecodePayload(virNetMessagePtr msg,
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xdrproc_t filter,
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void *data)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
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int virNetMessageEncodeNumFDs(virNetMessagePtr msg);
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int virNetMessageDecodeNumFDs(virNetMessagePtr msg);
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int virNetMessageEncodePayloadRaw(virNetMessagePtr msg,
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const char *buf,
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size_t len)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int virNetMessageEncodePayloadEmpty(virNetMessagePtr msg)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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void virNetMessageSaveError(virNetMessageErrorPtr rerr)
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ATTRIBUTE_NONNULL(1);
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int virNetMessageDupFD(virNetMessagePtr msg,
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size_t slot);
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int virNetMessageAddFD(virNetMessagePtr msg,
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int fd);
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#endif /* __VIR_NET_MESSAGE_H__ */
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