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authorRoland McGrath <roland@gnu.org>1996-01-02 08:57:42 +0000
committerRoland McGrath <roland@gnu.org>1996-01-02 08:57:42 +0000
commit71733723fb421bd54467d1a27096463ed1dcc2ed (patch)
treef304556d491722c797d876911834dc4afbfa2740 /db/recno
parentfc4026d8e43407ba2739e493878d1ce259500059 (diff)
downloadglibc-71733723fb421bd54467d1a27096463ed1dcc2ed.zip
glibc-71733723fb421bd54467d1a27096463ed1dcc2ed.tar.gz
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* hurd/hurd/signal.h (struct hurd_sigstate): New member `preempters'.cvs/libc-960102
(hurd_preempt_signals, hurd_unpreempt_signals): Decls removed. * hurd/hurd/sigpreempt.h: New file. * hurd/preempt-sig.c: Rewritten with new interface. * sysdeps/mach/hurd/jmp-unwind.c (_longjmp_unwind): Remove local signal preempters being unwound past. * db: New directory, 4.4 BSD db package incorporated from BSD db-1.85 release. * sysdeps/unix/sysv/linux/sys/param.h: Several new macros for BSD compatibility.
Diffstat (limited to 'db/recno')
-rw-r--r--db/recno/extern.h54
-rw-r--r--db/recno/rec_close.c182
-rw-r--r--db/recno/rec_delete.c197
-rw-r--r--db/recno/rec_get.c311
-rw-r--r--db/recno/rec_open.c241
-rw-r--r--db/recno/rec_put.c280
-rw-r--r--db/recno/rec_search.c126
-rw-r--r--db/recno/rec_seq.c131
-rw-r--r--db/recno/rec_utils.c122
-rw-r--r--db/recno/recno.h39
10 files changed, 1683 insertions, 0 deletions
diff --git a/db/recno/extern.h b/db/recno/extern.h
new file mode 100644
index 0000000..feed434
--- /dev/null
+++ b/db/recno/extern.h
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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.
+ *
+ * @(#)extern.h 8.3 (Berkeley) 6/4/94
+ */
+
+#include "../btree/extern.h"
+
+int __rec_close __P((DB *));
+int __rec_delete __P((const DB *, const DBT *, u_int));
+int __rec_dleaf __P((BTREE *, PAGE *, u_int32_t));
+int __rec_fd __P((const DB *));
+int __rec_fmap __P((BTREE *, recno_t));
+int __rec_fout __P((BTREE *));
+int __rec_fpipe __P((BTREE *, recno_t));
+int __rec_get __P((const DB *, const DBT *, DBT *, u_int));
+int __rec_iput __P((BTREE *, recno_t, const DBT *, u_int));
+int __rec_put __P((const DB *dbp, DBT *, const DBT *, u_int));
+int __rec_ret __P((BTREE *, EPG *, recno_t, DBT *, DBT *));
+EPG *__rec_search __P((BTREE *, recno_t, enum SRCHOP));
+int __rec_seq __P((const DB *, DBT *, DBT *, u_int));
+int __rec_sync __P((const DB *, u_int));
+int __rec_vmap __P((BTREE *, recno_t));
+int __rec_vout __P((BTREE *));
+int __rec_vpipe __P((BTREE *, recno_t));
diff --git a/db/recno/rec_close.c b/db/recno/rec_close.c
new file mode 100644
index 0000000..16fb0b4
--- /dev/null
+++ b/db/recno/rec_close.c
@@ -0,0 +1,182 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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_close.c 8.6 (Berkeley) 8/18/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/mman.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_CLOSE -- Close a recno tree.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_close(dbp)
+ DB *dbp;
+{
+ BTREE *t;
+ int status;
+
+ 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;
+ }
+
+ if (__rec_sync(dbp, 0) == RET_ERROR)
+ return (RET_ERROR);
+
+ /* Committed to closing. */
+ status = RET_SUCCESS;
+ if (F_ISSET(t, R_MEMMAPPED) && munmap(t->bt_smap, t->bt_msize))
+ status = RET_ERROR;
+
+ if (!F_ISSET(t, R_INMEM))
+ if (F_ISSET(t, R_CLOSEFP)) {
+ if (fclose(t->bt_rfp))
+ status = RET_ERROR;
+ } else
+ if (close(t->bt_rfd))
+ status = RET_ERROR;
+
+ if (__bt_close(dbp) == RET_ERROR)
+ status = RET_ERROR;
+
+ return (status);
+}
+
+/*
+ * __REC_SYNC -- sync the recno tree to disk.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+int
+__rec_sync(dbp, flags)
+ const DB *dbp;
+ u_int flags;
+{
+ struct iovec iov[2];
+ BTREE *t;
+ DBT data, key;
+ off_t off;
+ recno_t scursor, trec;
+ int status;
+
+ 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;
+ }
+
+ if (flags == R_RECNOSYNC)
+ return (__bt_sync(dbp, 0));
+
+ if (F_ISSET(t, R_RDONLY | R_INMEM) || !F_ISSET(t, R_MODIFIED))
+ return (RET_SUCCESS);
+
+ /* Read any remaining records into the tree. */
+ if (!F_ISSET(t, R_EOF) && t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
+ return (RET_ERROR);
+
+ /* Rewind the file descriptor. */
+ if (lseek(t->bt_rfd, (off_t)0, SEEK_SET) != 0)
+ return (RET_ERROR);
+
+ /* Save the cursor. */
+ scursor = t->bt_cursor.rcursor;
+
+ key.size = sizeof(recno_t);
+ key.data = &trec;
+
+ if (F_ISSET(t, R_FIXLEN)) {
+ /*
+ * We assume that fixed length records are all fixed length.
+ * Any that aren't are either EINVAL'd or corrected by the
+ * record put code.
+ */
+ status = (dbp->seq)(dbp, &key, &data, R_FIRST);
+ while (status == RET_SUCCESS) {
+ if (write(t->bt_rfd, data.data, data.size) != data.size)
+ return (RET_ERROR);
+ status = (dbp->seq)(dbp, &key, &data, R_NEXT);
+ }
+ } else {
+ iov[1].iov_base = &t->bt_bval;
+ iov[1].iov_len = 1;
+
+ status = (dbp->seq)(dbp, &key, &data, R_FIRST);
+ while (status == RET_SUCCESS) {
+ iov[0].iov_base = data.data;
+ iov[0].iov_len = data.size;
+ if (writev(t->bt_rfd, iov, 2) != data.size + 1)
+ return (RET_ERROR);
+ status = (dbp->seq)(dbp, &key, &data, R_NEXT);
+ }
+ }
+
+ /* Restore the cursor. */
+ t->bt_cursor.rcursor = scursor;
+
+ if (status == RET_ERROR)
+ return (RET_ERROR);
+ if ((off = lseek(t->bt_rfd, (off_t)0, SEEK_CUR)) == -1)
+ return (RET_ERROR);
+ if (ftruncate(t->bt_rfd, off))
+ return (RET_ERROR);
+ F_CLR(t, R_MODIFIED);
+ return (RET_SUCCESS);
+}
diff --git a/db/recno/rec_delete.c b/db/recno/rec_delete.c
new file mode 100644
index 0000000..a16593d
--- /dev/null
+++ b/db/recno/rec_delete.c
@@ -0,0 +1,197 @@
+/*-
+ * 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_delete.c 8.7 (Berkeley) 7/14/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+static int rec_rdelete __P((BTREE *, recno_t));
+
+/*
+ * __REC_DELETE -- Delete the item(s) referenced by a key.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key to delete
+ * flags: R_CURSOR if deleting what the cursor references
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+int
+__rec_delete(dbp, key, flags)
+ const DB *dbp;
+ const DBT *key;
+ u_int flags;
+{
+ BTREE *t;
+ recno_t nrec;
+ int status;
+
+ 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;
+ }
+
+ switch(flags) {
+ case 0:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ if (nrec > t->bt_nrecs)
+ return (RET_SPECIAL);
+ --nrec;
+ status = rec_rdelete(t, nrec);
+ break;
+ case R_CURSOR:
+ if (!F_ISSET(&t->bt_cursor, CURS_INIT))
+ goto einval;
+ if (t->bt_nrecs == 0)
+ return (RET_SPECIAL);
+ status = rec_rdelete(t, t->bt_cursor.rcursor - 1);
+ if (status == RET_SUCCESS)
+ --t->bt_cursor.rcursor;
+ break;
+ default:
+einval: errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ if (status == RET_SUCCESS)
+ F_SET(t, B_MODIFIED | R_MODIFIED);
+ return (status);
+}
+
+/*
+ * REC_RDELETE -- Delete the data matching the specified key.
+ *
+ * Parameters:
+ * tree: tree
+ * nrec: record to delete
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+static int
+rec_rdelete(t, nrec)
+ BTREE *t;
+ recno_t nrec;
+{
+ EPG *e;
+ PAGE *h;
+ int status;
+
+ /* Find the record; __rec_search pins the page. */
+ if ((e = __rec_search(t, nrec, SDELETE)) == NULL)
+ return (RET_ERROR);
+
+ /* Delete the record. */
+ h = e->page;
+ status = __rec_dleaf(t, h, e->index);
+ if (status != RET_SUCCESS) {
+ mpool_put(t->bt_mp, h, 0);
+ return (status);
+ }
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ return (RET_SUCCESS);
+}
+
+/*
+ * __REC_DLEAF -- Delete a single record from a recno leaf page.
+ *
+ * Parameters:
+ * t: tree
+ * index: index on current page to delete
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+int
+__rec_dleaf(t, h, index)
+ BTREE *t;
+ PAGE *h;
+ u_int32_t index;
+{
+ RLEAF *rl;
+ indx_t *ip, cnt, offset;
+ u_int32_t nbytes;
+ char *from;
+ void *to;
+
+ /*
+ * Delete a record from a recno leaf page. Internal records are never
+ * deleted from internal pages, regardless of the records that caused
+ * them to be added being deleted. Pages made empty by deletion are
+ * not reclaimed. They are, however, made available for reuse.
+ *
+ * Pack the remaining entries at the end of the page, shift the indices
+ * down, overwriting the deleted record and its index. If the record
+ * uses overflow pages, make them available for reuse.
+ */
+ to = rl = GETRLEAF(h, index);
+ if (rl->flags & P_BIGDATA && __ovfl_delete(t, rl->bytes) == RET_ERROR)
+ return (RET_ERROR);
+ nbytes = NRLEAF(rl);
+
+ /*
+ * Compress the key/data pairs. Compress and adjust the [BR]LEAF
+ * offsets. Reset the headers.
+ */
+ from = (char *)h + h->upper;
+ memmove(from + nbytes, from, (char *)to - from);
+ h->upper += nbytes;
+
+ offset = h->linp[index];
+ for (cnt = &h->linp[index] - (ip = &h->linp[0]); cnt--; ++ip)
+ if (ip[0] < offset)
+ ip[0] += nbytes;
+ for (cnt = &h->linp[NEXTINDEX(h)] - ip; --cnt; ++ip)
+ ip[0] = ip[1] < offset ? ip[1] + nbytes : ip[1];
+ h->lower -= sizeof(indx_t);
+ --t->bt_nrecs;
+ return (RET_SUCCESS);
+}
diff --git a/db/recno/rec_get.c b/db/recno/rec_get.c
new file mode 100644
index 0000000..47dd773
--- /dev/null
+++ b/db/recno/rec_get.c
@@ -0,0 +1,311 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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_get.c 8.9 (Berkeley) 8/18/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_GET -- Get a record from the btree.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key to find
+ * data: data to return
+ * flag: currently unused
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+int
+__rec_get(dbp, key, data, flags)
+ const DB *dbp;
+ const DBT *key;
+ DBT *data;
+ u_int flags;
+{
+ BTREE *t;
+ EPG *e;
+ recno_t nrec;
+ int status;
+
+ 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;
+ }
+
+ /* Get currently doesn't take any flags, and keys of 0 are illegal. */
+ if (flags || (nrec = *(recno_t *)key->data) == 0) {
+ errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ /*
+ * If we haven't seen this record yet, try to find it in the
+ * original file.
+ */
+ if (nrec > t->bt_nrecs) {
+ if (F_ISSET(t, R_EOF | R_INMEM))
+ return (RET_SPECIAL);
+ if ((status = t->bt_irec(t, nrec)) != RET_SUCCESS)
+ return (status);
+ }
+
+ --nrec;
+ if ((e = __rec_search(t, nrec, SEARCH)) == NULL)
+ return (RET_ERROR);
+
+ status = __rec_ret(t, e, 0, NULL, data);
+ if (F_ISSET(t, B_DB_LOCK))
+ mpool_put(t->bt_mp, e->page, 0);
+ else
+ t->bt_pinned = e->page;
+ return (status);
+}
+
+/*
+ * __REC_FPIPE -- Get fixed length records from a pipe.
+ *
+ * Parameters:
+ * t: tree
+ * cnt: records to read
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_fpipe(t, top)
+ BTREE *t;
+ recno_t top;
+{
+ DBT data;
+ recno_t nrec;
+ size_t len;
+ int ch;
+ u_char *p;
+
+ if (t->bt_rdata.size < t->bt_reclen) {
+ t->bt_rdata.data = t->bt_rdata.data == NULL ?
+ malloc(t->bt_reclen) :
+ realloc(t->bt_rdata.data, t->bt_reclen);
+ if (t->bt_rdata.data == NULL)
+ return (RET_ERROR);
+ t->bt_rdata.size = t->bt_reclen;
+ }
+ data.data = t->bt_rdata.data;
+ data.size = t->bt_reclen;
+
+ for (nrec = t->bt_nrecs; nrec < top;) {
+ len = t->bt_reclen;
+ for (p = t->bt_rdata.data;; *p++ = ch)
+ if ((ch = getc(t->bt_rfp)) == EOF || !--len) {
+ if (ch != EOF)
+ *p = ch;
+ if (len != 0)
+ memset(p, t->bt_bval, len);
+ if (__rec_iput(t,
+ nrec, &data, 0) != RET_SUCCESS)
+ return (RET_ERROR);
+ ++nrec;
+ break;
+ }
+ if (ch == EOF)
+ break;
+ }
+ if (nrec < top) {
+ F_SET(t, R_EOF);
+ return (RET_SPECIAL);
+ }
+ return (RET_SUCCESS);
+}
+
+/*
+ * __REC_VPIPE -- Get variable length records from a pipe.
+ *
+ * Parameters:
+ * t: tree
+ * cnt: records to read
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_vpipe(t, top)
+ BTREE *t;
+ recno_t top;
+{
+ DBT data;
+ recno_t nrec;
+ indx_t len;
+ size_t sz;
+ int bval, ch;
+ u_char *p;
+
+ bval = t->bt_bval;
+ for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+ for (p = t->bt_rdata.data,
+ sz = t->bt_rdata.size;; *p++ = ch, --sz) {
+ if ((ch = getc(t->bt_rfp)) == EOF || ch == bval) {
+ data.data = t->bt_rdata.data;
+ data.size = p - (u_char *)t->bt_rdata.data;
+ if (ch == EOF && data.size == 0)
+ break;
+ if (__rec_iput(t, nrec, &data, 0)
+ != RET_SUCCESS)
+ return (RET_ERROR);
+ break;
+ }
+ if (sz == 0) {
+ len = p - (u_char *)t->bt_rdata.data;
+ t->bt_rdata.size += (sz = 256);
+ t->bt_rdata.data = t->bt_rdata.data == NULL ?
+ malloc(t->bt_rdata.size) :
+ realloc(t->bt_rdata.data, t->bt_rdata.size);
+ if (t->bt_rdata.data == NULL)
+ return (RET_ERROR);
+ p = (u_char *)t->bt_rdata.data + len;
+ }
+ }
+ if (ch == EOF)
+ break;
+ }
+ if (nrec < top) {
+ F_SET(t, R_EOF);
+ return (RET_SPECIAL);
+ }
+ return (RET_SUCCESS);
+}
+
+/*
+ * __REC_FMAP -- Get fixed length records from a file.
+ *
+ * Parameters:
+ * t: tree
+ * cnt: records to read
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_fmap(t, top)
+ BTREE *t;
+ recno_t top;
+{
+ DBT data;
+ recno_t nrec;
+ u_char *sp, *ep, *p;
+ size_t len;
+
+ if (t->bt_rdata.size < t->bt_reclen) {
+ t->bt_rdata.data = t->bt_rdata.data == NULL ?
+ malloc(t->bt_reclen) :
+ realloc(t->bt_rdata.data, t->bt_reclen);
+ if (t->bt_rdata.data == NULL)
+ return (RET_ERROR);
+ t->bt_rdata.size = t->bt_reclen;
+ }
+ data.data = t->bt_rdata.data;
+ data.size = t->bt_reclen;
+
+ sp = (u_char *)t->bt_cmap;
+ ep = (u_char *)t->bt_emap;
+ for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+ if (sp >= ep) {
+ F_SET(t, R_EOF);
+ return (RET_SPECIAL);
+ }
+ len = t->bt_reclen;
+ for (p = t->bt_rdata.data;
+ sp < ep && len > 0; *p++ = *sp++, --len);
+ if (len != 0)
+ memset(p, t->bt_bval, len);
+ if (__rec_iput(t, nrec, &data, 0) != RET_SUCCESS)
+ return (RET_ERROR);
+ }
+ t->bt_cmap = (caddr_t)sp;
+ return (RET_SUCCESS);
+}
+
+/*
+ * __REC_VMAP -- Get variable length records from a file.
+ *
+ * Parameters:
+ * t: tree
+ * cnt: records to read
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_vmap(t, top)
+ BTREE *t;
+ recno_t top;
+{
+ DBT data;
+ u_char *sp, *ep;
+ recno_t nrec;
+ int bval;
+
+ sp = (u_char *)t->bt_cmap;
+ ep = (u_char *)t->bt_emap;
+ bval = t->bt_bval;
+
+ for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+ if (sp >= ep) {
+ F_SET(t, R_EOF);
+ return (RET_SPECIAL);
+ }
+ for (data.data = sp; sp < ep && *sp != bval; ++sp);
+ data.size = sp - (u_char *)data.data;
+ if (__rec_iput(t, nrec, &data, 0) != RET_SUCCESS)
+ return (RET_ERROR);
+ ++sp;
+ }
+ t->bt_cmap = (caddr_t)sp;
+ return (RET_SUCCESS);
+}
diff --git a/db/recno/rec_open.c b/db/recno/rec_open.c
new file mode 100644
index 0000000..51d8a3c
--- /dev/null
+++ b/db/recno/rec_open.c
@@ -0,0 +1,241 @@
+/*-
+ * 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);
+}
diff --git a/db/recno/rec_put.c b/db/recno/rec_put.c
new file mode 100644
index 0000000..1afae0d
--- /dev/null
+++ b/db/recno/rec_put.c
@@ -0,0 +1,280 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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_put.c 8.7 (Berkeley) 8/18/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_PUT -- Add a recno item to the tree.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key
+ * data: data
+ * flag: R_CURSOR, R_IAFTER, R_IBEFORE, R_NOOVERWRITE
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key is
+ * already in the tree and R_NOOVERWRITE specified.
+ */
+int
+__rec_put(dbp, key, data, flags)
+ const DB *dbp;
+ DBT *key;
+ const DBT *data;
+ u_int flags;
+{
+ BTREE *t;
+ DBT fdata, tdata;
+ recno_t nrec;
+ int status;
+
+ 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;
+ }
+
+ /*
+ * If using fixed-length records, and the record is long, return
+ * EINVAL. If it's short, pad it out. Use the record data return
+ * memory, it's only short-term.
+ */
+ if (F_ISSET(t, R_FIXLEN) && data->size != t->bt_reclen) {
+ if (data->size > t->bt_reclen)
+ goto einval;
+
+ if (t->bt_rdata.size < t->bt_reclen) {
+ t->bt_rdata.data = t->bt_rdata.data == NULL ?
+ malloc(t->bt_reclen) :
+ realloc(t->bt_rdata.data, t->bt_reclen);
+ if (t->bt_rdata.data == NULL)
+ return (RET_ERROR);
+ t->bt_rdata.size = t->bt_reclen;
+ }
+ memmove(t->bt_rdata.data, data->data, data->size);
+ memset((char *)t->bt_rdata.data + data->size,
+ t->bt_bval, t->bt_reclen - data->size);
+ fdata.data = t->bt_rdata.data;
+ fdata.size = t->bt_reclen;
+ } else {
+ fdata.data = data->data;
+ fdata.size = data->size;
+ }
+
+ switch (flags) {
+ case R_CURSOR:
+ if (!F_ISSET(&t->bt_cursor, CURS_INIT))
+ goto einval;
+ nrec = t->bt_cursor.rcursor;
+ break;
+ case R_SETCURSOR:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ break;
+ case R_IAFTER:
+ if ((nrec = *(recno_t *)key->data) == 0) {
+ nrec = 1;
+ flags = R_IBEFORE;
+ }
+ break;
+ case 0:
+ case R_IBEFORE:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ break;
+ case R_NOOVERWRITE:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ if (nrec <= t->bt_nrecs)
+ return (RET_SPECIAL);
+ break;
+ default:
+einval: errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ /*
+ * Make sure that records up to and including the put record are
+ * already in the database. If skipping records, create empty ones.
+ */
+ if (nrec > t->bt_nrecs) {
+ if (!F_ISSET(t, R_EOF | R_INMEM) &&
+ t->bt_irec(t, nrec) == RET_ERROR)
+ return (RET_ERROR);
+ if (nrec > t->bt_nrecs + 1) {
+ if (F_ISSET(t, R_FIXLEN)) {
+ if ((tdata.data =
+ (void *)malloc(t->bt_reclen)) == NULL)
+ return (RET_ERROR);
+ tdata.size = t->bt_reclen;
+ memset(tdata.data, t->bt_bval, tdata.size);
+ } else {
+ tdata.data = NULL;
+ tdata.size = 0;
+ }
+ while (nrec > t->bt_nrecs + 1)
+ if (__rec_iput(t,
+ t->bt_nrecs, &tdata, 0) != RET_SUCCESS)
+ return (RET_ERROR);
+ if (F_ISSET(t, R_FIXLEN))
+ free(tdata.data);
+ }
+ }
+
+ if ((status = __rec_iput(t, nrec - 1, &fdata, flags)) != RET_SUCCESS)
+ return (status);
+
+ if (flags == R_SETCURSOR)
+ t->bt_cursor.rcursor = nrec;
+
+ F_SET(t, R_MODIFIED);
+ return (__rec_ret(t, NULL, nrec, key, NULL));
+}
+
+/*
+ * __REC_IPUT -- Add a recno item to the tree.
+ *
+ * Parameters:
+ * t: tree
+ * nrec: record number
+ * data: data
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_iput(t, nrec, data, flags)
+ BTREE *t;
+ recno_t nrec;
+ const DBT *data;
+ u_int flags;
+{
+ DBT tdata;
+ EPG *e;
+ PAGE *h;
+ indx_t index, nxtindex;
+ pgno_t pg;
+ u_int32_t nbytes;
+ int dflags, status;
+ char *dest, db[NOVFLSIZE];
+
+ /*
+ * If the data won't fit on a page, store it on indirect pages.
+ *
+ * XXX
+ * If the insert fails later on, these pages aren't recovered.
+ */
+ if (data->size > t->bt_ovflsize) {
+ if (__ovfl_put(t, data, &pg) == RET_ERROR)
+ return (RET_ERROR);
+ tdata.data = db;
+ tdata.size = NOVFLSIZE;
+ *(pgno_t *)db = pg;
+ *(u_int32_t *)(db + sizeof(pgno_t)) = data->size;
+ dflags = P_BIGDATA;
+ data = &tdata;
+ } else
+ dflags = 0;
+
+ /* __rec_search pins the returned page. */
+ if ((e = __rec_search(t, nrec,
+ nrec > t->bt_nrecs || flags == R_IAFTER || flags == R_IBEFORE ?
+ SINSERT : SEARCH)) == NULL)
+ return (RET_ERROR);
+
+ h = e->page;
+ index = e->index;
+
+ /*
+ * Add the specified key/data pair to the tree. The R_IAFTER and
+ * R_IBEFORE flags insert the key after/before the specified key.
+ *
+ * Pages are split as required.
+ */
+ switch (flags) {
+ case R_IAFTER:
+ ++index;
+ break;
+ case R_IBEFORE:
+ break;
+ default:
+ if (nrec < t->bt_nrecs &&
+ __rec_dleaf(t, h, index) == RET_ERROR) {
+ mpool_put(t->bt_mp, h, 0);
+ return (RET_ERROR);
+ }
+ break;
+ }
+
+ /*
+ * If not enough room, split the page. The split code will insert
+ * the key and data and unpin the current page. If inserting into
+ * the offset array, shift the pointers up.
+ */
+ nbytes = NRLEAFDBT(data->size);
+ if (h->upper - h->lower < nbytes + sizeof(indx_t)) {
+ status = __bt_split(t, h, NULL, data, dflags, nbytes, index);
+ if (status == RET_SUCCESS)
+ ++t->bt_nrecs;
+ return (status);
+ }
+
+ if (index < (nxtindex = NEXTINDEX(h)))
+ memmove(h->linp + index + 1, h->linp + index,
+ (nxtindex - index) * sizeof(indx_t));
+ h->lower += sizeof(indx_t);
+
+ h->linp[index] = h->upper -= nbytes;
+ dest = (char *)h + h->upper;
+ WR_RLEAF(dest, data, dflags);
+
+ ++t->bt_nrecs;
+ F_SET(t, B_MODIFIED);
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+ return (RET_SUCCESS);
+}
diff --git a/db/recno/rec_search.c b/db/recno/rec_search.c
new file mode 100644
index 0000000..acc109e
--- /dev/null
+++ b/db/recno/rec_search.c
@@ -0,0 +1,126 @@
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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_search.c 8.4 (Berkeley) 7/14/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_SEARCH -- Search a btree for a key.
+ *
+ * Parameters:
+ * t: tree to search
+ * recno: key to find
+ * op: search operation
+ *
+ * Returns:
+ * EPG for matching record, if any, or the EPG for the location of the
+ * key, if it were inserted into the tree.
+ *
+ * Returns:
+ * The EPG for matching record, if any, or the EPG for the location
+ * of the key, if it were inserted into the tree, is entered into
+ * the bt_cur field of the tree. A pointer to the field is returned.
+ */
+EPG *
+__rec_search(t, recno, op)
+ BTREE *t;
+ recno_t recno;
+ enum SRCHOP op;
+{
+ register indx_t index;
+ register PAGE *h;
+ EPGNO *parent;
+ RINTERNAL *r;
+ pgno_t pg;
+ indx_t top;
+ recno_t total;
+ int sverrno;
+
+ BT_CLR(t);
+ for (pg = P_ROOT, total = 0;;) {
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ goto err;
+ if (h->flags & P_RLEAF) {
+ t->bt_cur.page = h;
+ t->bt_cur.index = recno - total;
+ return (&t->bt_cur);
+ }
+ for (index = 0, top = NEXTINDEX(h);;) {
+ r = GETRINTERNAL(h, index);
+ if (++index == top || total + r->nrecs > recno)
+ break;
+ total += r->nrecs;
+ }
+
+ BT_PUSH(t, pg, index - 1);
+
+ pg = r->pgno;
+ switch (op) {
+ case SDELETE:
+ --GETRINTERNAL(h, (index - 1))->nrecs;
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ break;
+ case SINSERT:
+ ++GETRINTERNAL(h, (index - 1))->nrecs;
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ break;
+ case SEARCH:
+ mpool_put(t->bt_mp, h, 0);
+ break;
+ }
+
+ }
+ /* Try and recover the tree. */
+err: sverrno = errno;
+ if (op != SEARCH)
+ while ((parent = BT_POP(t)) != NULL) {
+ if ((h = mpool_get(t->bt_mp, parent->pgno, 0)) == NULL)
+ break;
+ if (op == SINSERT)
+ --GETRINTERNAL(h, parent->index)->nrecs;
+ else
+ ++GETRINTERNAL(h, parent->index)->nrecs;
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ }
+ errno = sverrno;
+ return (NULL);
+}
diff --git a/db/recno/rec_seq.c b/db/recno/rec_seq.c
new file mode 100644
index 0000000..f80992c
--- /dev/null
+++ b/db/recno/rec_seq.c
@@ -0,0 +1,131 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)rec_seq.c 8.3 (Berkeley) 7/14/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_SEQ -- Recno sequential scan interface.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key for positioning and return value
+ * data: data return value
+ * flags: R_CURSOR, R_FIRST, R_LAST, R_NEXT, R_PREV.
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
+ */
+int
+__rec_seq(dbp, key, data, flags)
+ const DB *dbp;
+ DBT *key, *data;
+ u_int flags;
+{
+ BTREE *t;
+ EPG *e;
+ recno_t nrec;
+ int status;
+
+ 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;
+ }
+
+ switch(flags) {
+ case R_CURSOR:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ break;
+ case R_NEXT:
+ if (F_ISSET(&t->bt_cursor, CURS_INIT)) {
+ nrec = t->bt_cursor.rcursor + 1;
+ break;
+ }
+ /* FALLTHROUGH */
+ case R_FIRST:
+ nrec = 1;
+ break;
+ case R_PREV:
+ if (F_ISSET(&t->bt_cursor, CURS_INIT)) {
+ if ((nrec = t->bt_cursor.rcursor - 1) == 0)
+ return (RET_SPECIAL);
+ break;
+ }
+ /* FALLTHROUGH */
+ case R_LAST:
+ if (!F_ISSET(t, R_EOF | R_INMEM) &&
+ t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
+ return (RET_ERROR);
+ nrec = t->bt_nrecs;
+ break;
+ default:
+einval: errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ if (t->bt_nrecs == 0 || nrec > t->bt_nrecs) {
+ if (!F_ISSET(t, R_EOF | R_INMEM) &&
+ (status = t->bt_irec(t, nrec)) != RET_SUCCESS)
+ return (status);
+ if (t->bt_nrecs == 0 || nrec > t->bt_nrecs)
+ return (RET_SPECIAL);
+ }
+
+ if ((e = __rec_search(t, nrec - 1, SEARCH)) == NULL)
+ return (RET_ERROR);
+
+ F_SET(&t->bt_cursor, CURS_INIT);
+ t->bt_cursor.rcursor = nrec;
+
+ status = __rec_ret(t, e, nrec, key, data);
+ if (F_ISSET(t, B_DB_LOCK))
+ mpool_put(t->bt_mp, e->page, 0);
+ else
+ t->bt_pinned = e->page;
+ return (status);
+}
diff --git a/db/recno/rec_utils.c b/db/recno/rec_utils.c
new file mode 100644
index 0000000..baea3fa
--- /dev/null
+++ b/db/recno/rec_utils.c
@@ -0,0 +1,122 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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_utils.c 8.6 (Berkeley) 7/16/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __rec_ret --
+ * Build return data.
+ *
+ * Parameters:
+ * t: tree
+ * e: key/data pair to be returned
+ * nrec: record number
+ * key: user's key structure
+ * data: user's data structure
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+int
+__rec_ret(t, e, nrec, key, data)
+ BTREE *t;
+ EPG *e;
+ recno_t nrec;
+ DBT *key, *data;
+{
+ RLEAF *rl;
+ void *p;
+
+ if (key == NULL)
+ goto dataonly;
+
+ /* We have to copy the key, it's not on the page. */
+ if (sizeof(recno_t) > t->bt_rkey.size) {
+ p = (void *)(t->bt_rkey.data == NULL ?
+ malloc(sizeof(recno_t)) :
+ realloc(t->bt_rkey.data, sizeof(recno_t)));
+ if (p == NULL)
+ return (RET_ERROR);
+ t->bt_rkey.data = p;
+ t->bt_rkey.size = sizeof(recno_t);
+ }
+ memmove(t->bt_rkey.data, &nrec, sizeof(recno_t));
+ key->size = sizeof(recno_t);
+ key->data = t->bt_rkey.data;
+
+dataonly:
+ if (data == NULL)
+ return (RET_SUCCESS);
+
+ /*
+ * We must copy big keys/data to make them contigous. Otherwise,
+ * leave the page pinned and don't copy unless the user specified
+ * concurrent access.
+ */
+ rl = GETRLEAF(e->page, e->index);
+ if (rl->flags & P_BIGDATA) {
+ if (__ovfl_get(t, rl->bytes,
+ &data->size, &t->bt_rdata.data, &t->bt_rdata.size))
+ return (RET_ERROR);
+ data->data = t->bt_rdata.data;
+ } else if (F_ISSET(t, B_DB_LOCK)) {
+ /* Use +1 in case the first record retrieved is 0 length. */
+ if (rl->dsize + 1 > t->bt_rdata.size) {
+ p = (void *)(t->bt_rdata.data == NULL ?
+ malloc(rl->dsize + 1) :
+ realloc(t->bt_rdata.data, rl->dsize + 1));
+ if (p == NULL)
+ return (RET_ERROR);
+ t->bt_rdata.data = p;
+ t->bt_rdata.size = rl->dsize + 1;
+ }
+ memmove(t->bt_rdata.data, rl->bytes, rl->dsize);
+ data->size = rl->dsize;
+ data->data = t->bt_rdata.data;
+ } else {
+ data->size = rl->dsize;
+ data->data = rl->bytes;
+ }
+ return (RET_SUCCESS);
+}
diff --git a/db/recno/recno.h b/db/recno/recno.h
new file mode 100644
index 0000000..bec772c
--- /dev/null
+++ b/db/recno/recno.h
@@ -0,0 +1,39 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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.
+ *
+ * @(#)recno.h 8.1 (Berkeley) 6/4/93
+ */
+
+enum SRCHOP { SDELETE, SINSERT, SEARCH}; /* Rec_search operation. */
+
+#include "../btree/btree.h"
+#include "extern.h"