Minor changes from Berkeley DB 1.86 and further improvements from OpenBSD.

This does not include the new hash routines since they will cause problems
when reading old hash files.

Since mpool(3) has been changed, provide a compatibility shim for older
binaries.

Obtained from:	OpenBSD

1 files changed, 26 insertions, 6 deletions

diff --git a/lib/libc/db/man/mpool.3 b/lib/libc/db/man/mpool.3
index e9918a9..3de51c3 100644
--- a/lib/libc/db/man/mpool.3
+++ b/lib/libc/db/man/mpool.3
@@ -28,7 +28,7 @@
 .\"	@(#)mpool.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 4, 1993
+.Dd February 25, 1999
 .Dt MPOOL 3
 .Os
 .Sh NAME
@@ -47,7 +47,9 @@
 .Fa "void *pgcookie"
 .Fc
 .Ft void *
-.Fn mpool_new "MPOOL *mp" "pgno_t *pgnoaddr"
+.Fn mpool_new "MPOOL *mp" "pgno_t *pgnoaddr" "u_int flags"
+.Ft int
+.Fn mpool_delete "MPOOL *mp" "void *page"
 .Ft void *
 .Fn mpool_get "MPOOL *mp" "pgno_t pgno" "u_int flags"
 .Ft int
@@ -99,11 +101,11 @@ Both functions are called with the
 .Fa pgcookie
 pointer, the page number and a pointer to the page to being read or written.
 .Pp
-The
+The function
 .Fn mpool_new
-function takes an
-.Ft MPOOL
-pointer and an address as arguments.
+takes an
+.Dv MPOOL
+pointer, an address, and a set of flags as arguments.
 If a new page can be allocated, a pointer to the page is returned and
 the page number is stored into the
 .Fa pgnoaddr
@@ -113,6 +115,24 @@ Otherwise,
 is returned and
 .Va errno
 is set.
+The flags value is formed by
+.Tn OR Ns 'ing
+the following values:
+.Bl -tag -width Ds
+.It Dv MPOOL_PAGE_REQUEST
+Allocate a new page with a specific page number.
+.It Dv MPOOL_PAGE_NEXT
+Allocate a new page with the next page number.
+.El
+.Pp
+The function
+.Fn mpool_delete
+deletes the specified page from a pool and frees the page.
+It takes an
+.Dv MPOOL
+pointer and a page as arguments.
+The page must have been generated by
+.Fn mpool_new .
 .Pp
 The
 .Fn mpool_get