src/lib/libc/db, 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

hash(3): protect in-memory page when using cross-endianness.

2016-09-26T16:06:50Z

When writing out pages in the "other endian" format, make a copy instead of trashing the in-memory one. Obtained from: NetBSD (CVS rev. 1.29)

btree(3): don't shortcut closing if the metadata is dirty.

2016-09-26T02:29:28Z

Obtained from: NetBSD (from krb5 tree) MFC after: 3 weeks

Fix prototype of dbm_open().

2016-05-31T18:32:57Z

The last argument of dbm_open() should be a mode_t according to POSIX; not an int. Reviewed by: pfg, kib Differential Revision: https://reviews.freebsd.org/D6650

Let dbm's datum::dptr use the right type.

2016-05-30T16:52:23Z

According to POSIX, it should use void *, not char *. Unfortunately, the dsize field also has the wrong type. It should be size_t. I'm not going to change that, as that will break the ABI. Reviewed by: pfg Differential Revision: https://reviews.freebsd.org/D6647

libc: make more use of the howmany() macro when available.

2016-04-26T01:17:05Z

We have a howmany() macro in the header that is convenient to re-use as it makes things easier to read.

libc: use our roundup2/rounddown2() macros when param.h is available.

2016-04-20T01:21:39Z

rounddown2 tends to produce longer lines than the original code but still it makes the code more readable.