src/lib/libc/db/mpool, branch releng/12.4

Remove "All rights reserved" from my files.

2018-05-10T06:41:08Z

See r333391 for the rationale. MFC after: 1 week

libc: further adoption of SPDX licensing ID tags.

2017-11-25T17:12:48Z

Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.

General further adoption of SPDX licensing ID tags.

2017-11-20T19:49:47Z

Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.

Renumber copyright clause 4

2017-02-28T23:42:47Z

Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann Pull Request: https://github.com/freebsd/freebsd/pull/96

libc: don't build compat functions if building WITHOUT_SYMVER

2016-03-15T19:26:32Z

WITHOUT_SYMVER necessarily implies building a system without symver backwards compatability. Sponsored by: The FreeBSD Foundation

Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP}

2014-03-04T02:19:39Z

if not already defined. This allows building libc from outside of lib/libc using a reach-over makefile. A typical use-case is to build a standard ILP32 version and a COMPAT32 version in a single iteration by building the COMPAT32 version using a reach-over makefile. Obtained from: Juniper Networks, Inc.

Update SCCS IDs for Berkeley DB 1.86 merge.

2009-06-24T01:15:10Z

Add some casts to silence compiler warning about signedness.

2009-03-28T07:44:08Z

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

2009-03-28T07:31:02Z

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

When allocating memory, zero out them if we don't intend to overwrite them

2009-03-28T04:00:46Z

all; before freeing memory, zero out them before we release it as free heap. This will eliminate some potential information leak issue. While there, remove the PURIFY option. There is a slight difference between the new behavior and the old -DPURIFY behavior, with the latter initializes memory with 0xff's. The difference between old and new approach does not generate observable difference. Obtained from: OpenBSD (partly).