/*- * 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 rcsid[] = "$OpenBSD: rec_close.c,v 1.4 1996/09/15 09:30:53 tholo Exp $"; #endif /* LIBC_SCCS and not lint */ #include #include #include #include #include #include #include #include #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 = (char *) &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); }