This commit converts the license handling to adhere to the REUSE
specification. It specifically:
1. Adds used licnses to LICENSES/ directory
2. Add "isc" template for adding the copyright boilerplate
3. Changes all source files to include copyright and SPDX license
header, this includes all the C sources, documentation, zone files,
configuration files. There are notes in the doc/dev/copyrights file
on how to add correct headers to the new files.
4. Handle the rest that can't be modified via .reuse/dep5 file. The
binary (or otherwise unmodifiable) files could have license places
next to them in <foo>.license file, but this would lead to cluttered
repository and most of the files handled in the .reuse/dep5 file are
system test files.
Remove the dynamic registration of result codes. Convert isc_result_t
from unsigned + #defines into 32-bit enum type in grand unified
<isc/result.h> header. Keep the existing values of the result codes
even at the expense of the description and identifier tables being
unnecessary large.
Additionally, add couple of:
switch (result) {
[...]
default:
break;
}
statements where compiler now complains about missing enum values in the
switch statement.
The C standard actually doesn't define char as signed or unsigned, and
it could be either according to underlying architecture. It turns out
that while it's usually signed type, it isn't on arm64 where it's
unsigned.
isc_commandline_parse() return int, just use that instead of the char.
when the 'max-ixfr-ratio' option was added, journal transaction
headers were revised to include a count of RR's in each transaction.
this made it impossible to read old journal files after an upgrade.
this branch restores the ability to read version 1 transaction
headers. when rolling forward, printing journal contents, if
the wrong transaction header format is found, we can switch.
when dns_journal_rollforward() detects a version 1 transaction
header, it returns DNS_R_RECOVERABLE. this triggers zone_postload()
to force a rewrite of the journal file in the new format, and
also to schedule a dump of the zone database with minimal delay.
journal repair is done by dns_journal_compact(), which rewrites
the entire journal, ignoring 'max-journal-size'. journal size is
corrected later.
newly created journal files now have "BIND LOG V9.2" in their headers
instead of "BIND LOG V9". files with the new version string cannot be
read using the old transaction header format. note that this means
newly created journal files will be rejected by older versions of named.
named-journalprint now takes a "-x" option, causing it to print
transaction header information before each delta, including its
format version.
The isc_mem API now crashes on memory allocation failure, and this is
the next commit in series to cleanup the code that could fail before,
but cannot fail now, e.g. isc_result_t return type has been changed to
void for the isc_log API functions that could only return ISC_R_SUCCESS.
