Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libc/db/recno/rec_open.c	Lines:	0	80	0.0 %
Date:	2017-11-13	Branches:	0	55	0.0 %


/*	$OpenBSD: rec_open.c,v 1.13 2016/09/21 04:38:56 guenther 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 <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>

#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
#include <unistd.h>

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

DB *
__rec_open(const char *fname, int flags, int mode, const RECNOINFO *openinfo,
    int dflags)
{
	BTREE *t;
	BTREEINFO btopeninfo;
	DB *dbp;
	PAGE *h;
	struct stat sb;
	int rfd, sverrno;

	/* Open the user's file -- if this fails, we're done. */
	if (fname != NULL && (rfd = open(fname, flags, mode)) < 0)
		return (NULL);

	/* Create a btree in memory (backed by disk). */
	dbp = NULL;
	if (openinfo) {
		if (openinfo->flags & ~(R_FIXEDLEN | R_NOKEY | R_SNAPSHOT))
			goto einval;
		btopeninfo.flags = 0;
		btopeninfo.cachesize = openinfo->cachesize;
		btopeninfo.maxkeypage = 0;
		btopeninfo.minkeypage = 0;
		btopeninfo.psize = openinfo->psize;
		btopeninfo.compare = NULL;
		btopeninfo.prefix = NULL;
		btopeninfo.lorder = openinfo->lorder;
		dbp = __bt_open(openinfo->bfname,
		    O_RDWR, S_IRUSR | S_IWUSR, &btopeninfo, dflags);
	} else
		dbp = __bt_open(NULL, O_RDWR, S_IRUSR | S_IWUSR, NULL, dflags);
	if (dbp == NULL)
		goto err;

	/*
	 * Some fields in the tree structure are recno specific.  Fill them
	 * in and make the btree structure look like a recno structure.  We
	 * don't change the bt_ovflsize value, it's close enough and slightly
	 * bigger.
	 */
	t = dbp->internal;
	if (openinfo) {
		if (openinfo->flags & R_FIXEDLEN) {
			F_SET(t, R_FIXLEN);
			t->bt_reclen = openinfo->reclen;
			if (t->bt_reclen == 0)
				goto einval;
		}
		t->bt_bval = openinfo->bval;
	} else
		t->bt_bval = '\n';

	F_SET(t, R_RECNO);
	if (fname == NULL)
		F_SET(t, R_EOF | R_INMEM);
	else
		t->bt_rfd = rfd;

	if (fname != NULL) {
		/*
		 * In 4.4BSD, stat(2) returns true for ISSOCK on pipes.
		 * Unfortunately, that's not portable, so we use lseek
		 * and check the errno values.
		 */
		errno = 0;
		if (lseek(rfd, 0, SEEK_CUR) == -1 && errno == ESPIPE) {
			switch (flags & O_ACCMODE) {
			case O_RDONLY:
				F_SET(t, R_RDONLY);
				break;
			default:
				goto einval;
			}
slow:			if ((t->bt_rfp = fdopen(rfd, "r")) == NULL)
				goto err;
			F_SET(t, R_CLOSEFP);
			t->bt_irec =
			    F_ISSET(t, R_FIXLEN) ? __rec_fpipe : __rec_vpipe;
		} else {
			switch (flags & O_ACCMODE) {
			case O_RDONLY:
				F_SET(t, R_RDONLY);
				break;
			case O_RDWR:
				break;
			default:
				goto einval;
			}

			if (fstat(rfd, &sb))
				goto err;
			if (sb.st_size == 0)
				F_SET(t, R_EOF);
			else {
				goto slow;
			}
		}
	}

	/* Use the recno routines. */
	dbp->close = __rec_close;
	dbp->del = __rec_delete;
	dbp->fd = __rec_fd;
	dbp->get = __rec_get;
	dbp->put = __rec_put;
	dbp->seq = __rec_seq;
	dbp->sync = __rec_sync;

	/* If the root page was created, reset the flags. */
	if ((h = mpool_get(t->bt_mp, P_ROOT, 0)) == NULL)
		goto err;
	if ((h->flags & P_TYPE) == P_BLEAF) {
		F_CLR(h, P_TYPE);
		F_SET(h, P_RLEAF);
		mpool_put(t->bt_mp, h, MPOOL_DIRTY);
	} else
		mpool_put(t->bt_mp, h, 0);

	if (openinfo && openinfo->flags & R_SNAPSHOT &&
	    !F_ISSET(t, R_EOF | R_INMEM) &&
	    t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
		goto err;
	return (dbp);

einval:	errno = EINVAL;
err:	sverrno = errno;
	if (dbp != NULL)
		(void)__bt_close(dbp);
	if (fname != NULL)
		(void)close(rfd);
	errno = sverrno;
	return (NULL);
}

int
__rec_fd(const DB *dbp)
{
	BTREE *t;

	t = dbp->internal;

	/* Toss any page pinned across calls. */
	if (t->bt_pinned != NULL) {
		mpool_put(t->bt_mp, t->bt_pinned, 0);
		t->bt_pinned = NULL;
	}

	/* In-memory database can't have a file descriptor. */
	if (F_ISSET(t, R_INMEM)) {
		errno = ENOENT;
		return (-1);
	}
	return (t->bt_rfd);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: rec_open.c,v 1.13 2016/09/21 04:38:56 guenther 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 <sys/types.h>
36			#include <sys/mman.h>
37			#include <sys/stat.h>
38
39			#include <errno.h>
40			#include <fcntl.h>
41			#include <limits.h>
42			#include <stddef.h>
43			#include <stdio.h>
44			#include <unistd.h>
45
46			#include <db.h>
47			#include "recno.h"
48
49			DB *
50			__rec_open(const char fname, int flags, int mode, const RECNOINFO openinfo,
51			int dflags)
52			{
53			BTREE *t;
54			BTREEINFO btopeninfo;
55			DB *dbp;
56			PAGE *h;
57			struct stat sb;
58			int rfd, sverrno;
59
60			/* Open the user's file -- if this fails, we're done. */
61			if (fname != NULL && (rfd = open(fname, flags, mode)) < 0)
62			return (NULL);
63
64			/* Create a btree in memory (backed by disk). */
65			dbp = NULL;
66			if (openinfo) {
67			if (openinfo->flags & ~(R_FIXEDLEN \| R_NOKEY \| R_SNAPSHOT))
68			goto einval;
69			btopeninfo.flags = 0;
70			btopeninfo.cachesize = openinfo->cachesize;
71			btopeninfo.maxkeypage = 0;
72			btopeninfo.minkeypage = 0;
73			btopeninfo.psize = openinfo->psize;
74			btopeninfo.compare = NULL;
75			btopeninfo.prefix = NULL;
76			btopeninfo.lorder = openinfo->lorder;
77			dbp = __bt_open(openinfo->bfname,
78			O_RDWR, S_IRUSR \| S_IWUSR, &btopeninfo, dflags);
79			} else
80			dbp = __bt_open(NULL, O_RDWR, S_IRUSR \| S_IWUSR, NULL, dflags);
81			if (dbp == NULL)
82			goto err;
83
84			/*
85			* Some fields in the tree structure are recno specific. Fill them
86			* in and make the btree structure look like a recno structure. We
87			* don't change the bt_ovflsize value, it's close enough and slightly
88			* bigger.
89			*/
90			t = dbp->internal;
91			if (openinfo) {
92			if (openinfo->flags & R_FIXEDLEN) {
93			F_SET(t, R_FIXLEN);
94			t->bt_reclen = openinfo->reclen;
95			if (t->bt_reclen == 0)
96			goto einval;
97			}
98			t->bt_bval = openinfo->bval;
99			} else
100			t->bt_bval = '\n';
101
102			F_SET(t, R_RECNO);
103			if (fname == NULL)
104			F_SET(t, R_EOF \| R_INMEM);
105			else
106			t->bt_rfd = rfd;
107
108			if (fname != NULL) {
109			/*
110			* In 4.4BSD, stat(2) returns true for ISSOCK on pipes.
111			* Unfortunately, that's not portable, so we use lseek
112			* and check the errno values.
113			*/
114			errno = 0;
115			if (lseek(rfd, 0, SEEK_CUR) == -1 && errno == ESPIPE) {
116			switch (flags & O_ACCMODE) {
117			case O_RDONLY:
118			F_SET(t, R_RDONLY);
119			break;
120			default:
121			goto einval;
122			}
123			slow: if ((t->bt_rfp = fdopen(rfd, "r")) == NULL)
124			goto err;
125			F_SET(t, R_CLOSEFP);
126			t->bt_irec =
127			F_ISSET(t, R_FIXLEN) ? __rec_fpipe : __rec_vpipe;
128			} else {
129			switch (flags & O_ACCMODE) {
130			case O_RDONLY:
131			F_SET(t, R_RDONLY);
132			break;
133			case O_RDWR:
134			break;
135			default:
136			goto einval;
137			}
138
139			if (fstat(rfd, &sb))
140			goto err;
141			if (sb.st_size == 0)
142			F_SET(t, R_EOF);
143			else {
144			goto slow;
145			}
146			}
147			}
148
149			/* Use the recno routines. */
150			dbp->close = __rec_close;
151			dbp->del = __rec_delete;
152			dbp->fd = __rec_fd;
153			dbp->get = __rec_get;
154			dbp->put = __rec_put;
155			dbp->seq = __rec_seq;
156			dbp->sync = __rec_sync;
157
158			/* If the root page was created, reset the flags. */
159			if ((h = mpool_get(t->bt_mp, P_ROOT, 0)) == NULL)
160			goto err;
161			if ((h->flags & P_TYPE) == P_BLEAF) {
162			F_CLR(h, P_TYPE);
163			F_SET(h, P_RLEAF);
164			mpool_put(t->bt_mp, h, MPOOL_DIRTY);
165			} else
166			mpool_put(t->bt_mp, h, 0);
167
168			if (openinfo && openinfo->flags & R_SNAPSHOT &&
169			!F_ISSET(t, R_EOF \| R_INMEM) &&
170			t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
171			goto err;
172			return (dbp);
173
174			einval: errno = EINVAL;
175			err: sverrno = errno;
176			if (dbp != NULL)
177			(void)__bt_close(dbp);
178			if (fname != NULL)
179			(void)close(rfd);
180			errno = sverrno;
181			return (NULL);
182			}
183
184			int
185			__rec_fd(const DB *dbp)
186			{
187			BTREE *t;
188
189			t = dbp->internal;
190
191			/* Toss any page pinned across calls. */
192			if (t->bt_pinned != NULL) {
193			mpool_put(t->bt_mp, t->bt_pinned, 0);
194			t->bt_pinned = NULL;
195			}
196
197			/* In-memory database can't have a file descriptor. */
198			if (F_ISSET(t, R_INMEM)) {
199			errno = ENOENT;
200			return (-1);
201			}
202			return (t->bt_rfd);
203			}