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authorUlrich Drepper <drepper@redhat.com>2000-01-02 06:01:06 +0000
committerUlrich Drepper <drepper@redhat.com>2000-01-02 06:01:06 +0000
commit8d6f1731fcd082e4f744ba9cb4bde4be7c08f1b3 (patch)
tree099a250d7366aef2ab028fdb24f0d692cd784b4a /db/recno/rec_open.c
parent9a6450d578556c11e7c173d2f28362345b8f1258 (diff)
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Update.
* Makeconfig (all-subdirs): Remove db and db2. * db/*: Removed. * db2/*: Removed.
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);
-}