29ede244cc
This change modifies TIPC's print buffer code as follows: 1) Now supports small print buffers (min. size reduced from 512 bytes to 64) 2) Now uses TIPC_NULL print buffer structure to indicate null device instead of NULL pointer (this simplified error handling) 3) Fixed misuse of console buffer structure by tipc_dump() 4) Added and corrected comments in various places Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Per Liden <per.liden@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
71 lines
2.9 KiB
C
71 lines
2.9 KiB
C
/*
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* net/tipc/dbg.h: Include file for TIPC print buffer routines
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*
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* Copyright (c) 1997-2006, Ericsson AB
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* Copyright (c) 2005-2006, Wind River Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TIPC_DBG_H
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#define _TIPC_DBG_H
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/**
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* struct print_buf - TIPC print buffer structure
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* @buf: pointer to character array containing print buffer contents
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* @size: size of character array
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* @crs: pointer to first unused space in character array (i.e. final NUL)
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* @next: used to link print buffers when printing to more than one at a time
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*/
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struct print_buf {
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char *buf;
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u32 size;
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char *crs;
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struct print_buf *next;
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};
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#define TIPC_PB_MIN_SIZE 64 /* minimum size for a print buffer's array */
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#define TIPC_PB_MAX_STR 512 /* max printable string (with trailing NUL) */
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void tipc_printbuf_init(struct print_buf *pb, char *buf, u32 size);
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void tipc_printbuf_reset(struct print_buf *pb);
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int tipc_printbuf_empty(struct print_buf *pb);
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int tipc_printbuf_validate(struct print_buf *pb);
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void tipc_printbuf_move(struct print_buf *pb_to, struct print_buf *pb_from);
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void tipc_log_reinit(int log_size);
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void tipc_log_stop(void);
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struct sk_buff *tipc_log_resize(const void *req_tlv_area, int req_tlv_space);
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struct sk_buff *tipc_log_dump(void);
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#endif
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