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Diffstat (limited to 'db/recno/rec_open.c')
-rw-r--r--db/recno/rec_open.c241
1 files changed, 0 insertions, 241 deletions
diff --git a/db/recno/rec_open.c b/db/recno/rec_open.c
deleted file mode 100644
index 51d8a3c260..0000000000
--- a/db/recno/rec_open.c
+++ /dev/null
@@ -1,241 +0,0 @@
-/*-
- * 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. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. 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.
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)rec_open.c	8.10 (Berkeley) 9/1/94";
-#endif /* LIBC_SCCS and not lint */
-
-#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(fname, flags, mode, openinfo, dflags)
-	const char *fname;
-	int flags, mode, dflags;
-	const RECNOINFO *openinfo;
-{
-	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, (off_t)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;
-			/*
-			 * Kluge -- we'd like to test to see if the file is too
-			 * big to mmap.  Since, we don't know what size or type
-			 * off_t's or size_t's are, what the largest unsigned
-			 * integral type is, or what random insanity the local
-			 * C compiler will perpetrate, doing the comparison in
-			 * a portable way is flatly impossible.  Hope that mmap
-			 * fails if the file is too large.
-			 */
-			if (sb.st_size == 0)
-				F_SET(t, R_EOF);
-			else {
-#ifdef MMAP_NOT_AVAILABLE
-				/*
-				 * XXX
-				 * Mmap doesn't work correctly on many current
-				 * systems.  In particular, it can fail subtly,
-				 * with cache coherency problems.  Don't use it
-				 * for now.
-				 */
-				t->bt_msize = sb.st_size;
-				if ((t->bt_smap = mmap(NULL, t->bt_msize,
-				    PROT_READ, MAP_PRIVATE, rfd,
-				    (off_t)0)) == (caddr_t)-1)
-					goto slow;
-				t->bt_cmap = t->bt_smap;
-				t->bt_emap = t->bt_smap + sb.st_size;
-				t->bt_irec = F_ISSET(t, R_FIXLEN) ?
-				    __rec_fmap : __rec_vmap;
-				F_SET(t, R_MEMMAPPED);
-#else
-				goto slow;
-#endif
-			}
-		}
-	}
-
-	/* 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(dbp)
-	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 cgit-pink 1.4.1 (git 2.36.1) at 2024-11-21 21:58:32 +0000