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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libc/db/btree/bt_conv.c	Lines:	0	102	0.0 %
Date:	2017-11-13	Branches:	0	40	0.0 %


/*	$OpenBSD: bt_conv.c,v 1.10 2015/01/16 16:48:51 deraadt Exp $	*/

/*-
 * Copyright (c) 1990, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Mike Olson.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <stdio.h>

#include <db.h>
#include "btree.h"

static void mswap(PAGE *);

/*
 * __BT_BPGIN, __BT_BPGOUT --
 *	Convert host-specific number layout to/from the host-independent
 *	format stored on disk.
 *
 * Parameters:
 *	t:	tree
 *	pg:	page number
 *	h:	page to convert
 */
void
__bt_pgin(void *t, pgno_t pg, void *pp)
{
	PAGE *h;
	indx_t i, top;
	u_char flags;
	char *p;

	if (!F_ISSET(((BTREE *)t), B_NEEDSWAP))
		return;
	if (pg == P_META) {
		mswap(pp);
		return;
	}

	h = pp;
	M_32_SWAP(h->pgno);
	M_32_SWAP(h->prevpg);
	M_32_SWAP(h->nextpg);
	M_32_SWAP(h->flags);
	M_16_SWAP(h->lower);
	M_16_SWAP(h->upper);

	top = NEXTINDEX(h);
	if ((h->flags & P_TYPE) == P_BINTERNAL)
		for (i = 0; i < top; i++) {
			M_16_SWAP(h->linp[i]);
			p = (char *)GETBINTERNAL(h, i);
			P_32_SWAP(p);
			p += sizeof(u_int32_t);
			P_32_SWAP(p);
			p += sizeof(pgno_t);
			if (*(u_char *)p & P_BIGKEY) {
				p += sizeof(u_char);
				P_32_SWAP(p);
				p += sizeof(pgno_t);
				P_32_SWAP(p);
			}
		}
	else if ((h->flags & P_TYPE) == P_BLEAF)
		for (i = 0; i < top; i++) {
			M_16_SWAP(h->linp[i]);
			p = (char *)GETBLEAF(h, i);
			P_32_SWAP(p);
			p += sizeof(u_int32_t);
			P_32_SWAP(p);
			p += sizeof(u_int32_t);
			flags = *(u_char *)p;
			if (flags & (P_BIGKEY | P_BIGDATA)) {
				p += sizeof(u_char);
				if (flags & P_BIGKEY) {
					P_32_SWAP(p);
					p += sizeof(pgno_t);
					P_32_SWAP(p);
				}
				if (flags & P_BIGDATA) {
					p += sizeof(u_int32_t);
					P_32_SWAP(p);
					p += sizeof(pgno_t);
					P_32_SWAP(p);
				}
			}
		}
}

void
__bt_pgout(void *t, pgno_t pg, void *pp)
{
	PAGE *h;
	indx_t i, top;
	u_char flags;
	char *p;

	if (!F_ISSET(((BTREE *)t), B_NEEDSWAP))
		return;
	if (pg == P_META) {
		mswap(pp);
		return;
	}

	h = pp;
	top = NEXTINDEX(h);
	if ((h->flags & P_TYPE) == P_BINTERNAL)
		for (i = 0; i < top; i++) {
			p = (char *)GETBINTERNAL(h, i);
			P_32_SWAP(p);
			p += sizeof(u_int32_t);
			P_32_SWAP(p);
			p += sizeof(pgno_t);
			if (*(u_char *)p & P_BIGKEY) {
				p += sizeof(u_char);
				P_32_SWAP(p);
				p += sizeof(pgno_t);
				P_32_SWAP(p);
			}
			M_16_SWAP(h->linp[i]);
		}
	else if ((h->flags & P_TYPE) == P_BLEAF)
		for (i = 0; i < top; i++) {
			p = (char *)GETBLEAF(h, i);
			P_32_SWAP(p);
			p += sizeof(u_int32_t);
			P_32_SWAP(p);
			p += sizeof(u_int32_t);
			flags = *(u_char *)p;
			if (flags & (P_BIGKEY | P_BIGDATA)) {
				p += sizeof(u_char);
				if (flags & P_BIGKEY) {
					P_32_SWAP(p);
					p += sizeof(pgno_t);
					P_32_SWAP(p);
				}
				if (flags & P_BIGDATA) {
					p += sizeof(u_int32_t);
					P_32_SWAP(p);
					p += sizeof(pgno_t);
					P_32_SWAP(p);
				}
			}
			M_16_SWAP(h->linp[i]);
		}

	M_32_SWAP(h->pgno);
	M_32_SWAP(h->prevpg);
	M_32_SWAP(h->nextpg);
	M_32_SWAP(h->flags);
	M_16_SWAP(h->lower);
	M_16_SWAP(h->upper);
}

/*
 * MSWAP -- Actually swap the bytes on the meta page.
 *
 * Parameters:
 *	p:	page to convert
 */
static void
mswap(PAGE *pg)
{
	char *p;

	p = (char *)pg;
	P_32_SWAP(p);		/* magic */
	p += sizeof(u_int32_t);
	P_32_SWAP(p);		/* version */
	p += sizeof(u_int32_t);
	P_32_SWAP(p);		/* psize */
	p += sizeof(u_int32_t);
	P_32_SWAP(p);		/* free */
	p += sizeof(u_int32_t);
	P_32_SWAP(p);		/* nrecs */
	p += sizeof(u_int32_t);
	P_32_SWAP(p);		/* flags */
	p += sizeof(u_int32_t);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: bt_conv.c,v 1.10 2015/01/16 16:48:51 deraadt Exp $ */
2
3			/*-
4			* Copyright (c) 1990, 1993, 1994
5			* The Regents of the University of California. All rights reserved.
6			*
7			* This code is derived from software contributed to Berkeley by
8			* Mike Olson.
9			*
10			* Redistribution and use in source and binary forms, with or without
11			* modification, are permitted provided that the following conditions
12			* are met:
13			* 1. Redistributions of source code must retain the above copyright
14			* notice, this list of conditions and the following disclaimer.
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in the
17			* documentation and/or other materials provided with the distribution.
18			* 3. Neither the name of the University nor the names of its contributors
19			* may be used to endorse or promote products derived from this software
20			* without specific prior written permission.
21			*
22			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32			* SUCH DAMAGE.
33			*/
34
35			#include <stdio.h>
36
37			#include <db.h>
38			#include "btree.h"
39
40			static void mswap(PAGE *);
41
42			/*
43			* __BT_BPGIN, __BT_BPGOUT --
44			* Convert host-specific number layout to/from the host-independent
45			* format stored on disk.
46			*
47			* Parameters:
48			* t: tree
49			* pg: page number
50			* h: page to convert
51			*/
52			void
53			__bt_pgin(void t, pgno_t pg, void pp)
54			{
55			PAGE *h;
56			indx_t i, top;
57			u_char flags;
58			char *p;
59
60			if (!F_ISSET(((BTREE *)t), B_NEEDSWAP))
61			return;
62			if (pg == P_META) {
63			mswap(pp);
64			return;
65			}
66
67			h = pp;
68			M_32_SWAP(h->pgno);
69			M_32_SWAP(h->prevpg);
70			M_32_SWAP(h->nextpg);
71			M_32_SWAP(h->flags);
72			M_16_SWAP(h->lower);
73			M_16_SWAP(h->upper);
74
75			top = NEXTINDEX(h);
76			if ((h->flags & P_TYPE) == P_BINTERNAL)
77			for (i = 0; i < top; i++) {
78			M_16_SWAP(h->linp[i]);
79			p = (char *)GETBINTERNAL(h, i);
80			P_32_SWAP(p);
81			p += sizeof(u_int32_t);
82			P_32_SWAP(p);
83			p += sizeof(pgno_t);
84			if ((u_char )p & P_BIGKEY) {
85			p += sizeof(u_char);
86			P_32_SWAP(p);
87			p += sizeof(pgno_t);
88			P_32_SWAP(p);
89			}
90			}
91			else if ((h->flags & P_TYPE) == P_BLEAF)
92			for (i = 0; i < top; i++) {
93			M_16_SWAP(h->linp[i]);
94			p = (char *)GETBLEAF(h, i);
95			P_32_SWAP(p);
96			p += sizeof(u_int32_t);
97			P_32_SWAP(p);
98			p += sizeof(u_int32_t);
99			flags = (u_char )p;
100			if (flags & (P_BIGKEY \| P_BIGDATA)) {
101			p += sizeof(u_char);
102			if (flags & P_BIGKEY) {
103			P_32_SWAP(p);
104			p += sizeof(pgno_t);
105			P_32_SWAP(p);
106			}
107			if (flags & P_BIGDATA) {
108			p += sizeof(u_int32_t);
109			P_32_SWAP(p);
110			p += sizeof(pgno_t);
111			P_32_SWAP(p);
112			}
113			}
114			}
115			}
116
117			void
118			__bt_pgout(void t, pgno_t pg, void pp)
119			{
120			PAGE *h;
121			indx_t i, top;
122			u_char flags;
123			char *p;
124
125			if (!F_ISSET(((BTREE *)t), B_NEEDSWAP))
126			return;
127			if (pg == P_META) {
128			mswap(pp);
129			return;
130			}
131
132			h = pp;
133			top = NEXTINDEX(h);
134			if ((h->flags & P_TYPE) == P_BINTERNAL)
135			for (i = 0; i < top; i++) {
136			p = (char *)GETBINTERNAL(h, i);
137			P_32_SWAP(p);
138			p += sizeof(u_int32_t);
139			P_32_SWAP(p);
140			p += sizeof(pgno_t);
141			if ((u_char )p & P_BIGKEY) {
142			p += sizeof(u_char);
143			P_32_SWAP(p);
144			p += sizeof(pgno_t);
145			P_32_SWAP(p);
146			}
147			M_16_SWAP(h->linp[i]);
148			}
149			else if ((h->flags & P_TYPE) == P_BLEAF)
150			for (i = 0; i < top; i++) {
151			p = (char *)GETBLEAF(h, i);
152			P_32_SWAP(p);
153			p += sizeof(u_int32_t);
154			P_32_SWAP(p);
155			p += sizeof(u_int32_t);
156			flags = (u_char )p;
157			if (flags & (P_BIGKEY \| P_BIGDATA)) {
158			p += sizeof(u_char);
159			if (flags & P_BIGKEY) {
160			P_32_SWAP(p);
161			p += sizeof(pgno_t);
162			P_32_SWAP(p);
163			}
164			if (flags & P_BIGDATA) {
165			p += sizeof(u_int32_t);
166			P_32_SWAP(p);
167			p += sizeof(pgno_t);
168			P_32_SWAP(p);
169			}
170			}
171			M_16_SWAP(h->linp[i]);
172			}
173
174			M_32_SWAP(h->pgno);
175			M_32_SWAP(h->prevpg);
176			M_32_SWAP(h->nextpg);
177			M_32_SWAP(h->flags);
178			M_16_SWAP(h->lower);
179			M_16_SWAP(h->upper);
180			}
181
182			/*
183			* MSWAP -- Actually swap the bytes on the meta page.
184			*
185			* Parameters:
186			* p: page to convert
187			*/
188			static void
189			mswap(PAGE *pg)
190			{
191			char *p;
192
193			p = (char *)pg;
194			P_32_SWAP(p); /* magic */
195			p += sizeof(u_int32_t);
196			P_32_SWAP(p); /* version */
197			p += sizeof(u_int32_t);
198			P_32_SWAP(p); /* psize */
199			p += sizeof(u_int32_t);
200			P_32_SWAP(p); /* free */
201			p += sizeof(u_int32_t);
202			P_32_SWAP(p); /* nrecs */
203			p += sizeof(u_int32_t);
204			P_32_SWAP(p); /* flags */
205			p += sizeof(u_int32_t);
206			}