Names: Fixed a rare bug in loading of pci.ids

If the pci.ids file was empty, it was never considered loaded,
so the loading function was called repeatedly and it always flushed
the name cache.

Update license comments and added SPDX license identifiers

Previously, the only information about the specific version of GPL
was present in the README and individual source files mentioned only
GPL

Update license comments and added SPDX license identifiers

Previously, the only information about the specific version of GPL
was present in the README and individual source files mentioned only
GPL alone.

Let us update all copyright comments to explicitly say "GPL v2+"
and also include the machine readable SPDX license identifier.

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HWDB: Fixed memory leak

Add a couple of missing va_end's

Found by Coverity scan.

Rewritten support for UDEV's HWDB

HWDB is now handled in a way very similar to the DNS resolver.

The interface lives in a separate source file (lib/names-hwdb.c),
results of lookups are cached. Use

Rewritten support for UDEV's HWDB

HWDB is now handled in a way very similar to the DNS resolver.

The interface lives in a separate source file (lib/names-hwdb.c),
results of lookups are cached. Use of HWDB can be disabled either
by passing PCI_LOOKUP_NO_HWDB or by setting the hwdb.disabled
configuration parameter.

Also, there should be no more leaks of libudev's structures.

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Truncate names which are too long

When any name turned out too long, we returned "<pci_lookup_name: buffer too small>",
which wasn't very useful. Instead of that, we truncate the name and
we add "..

Truncate names which are too long

When any name turned out too long, we returned "<pci_lookup_name: buffer too small>",
which wasn't very useful. Instead of that, we truncate the name and
we add "..." at the end.

Please note that for simplicity, the truncation happens only on systems with proper
C99 snprintf(). Ancient systems where snprintf() returns a negative number and
promises nothing about the state of the buffer still use the error message.

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Use `Device ABCD' instead of `Unknown device ABCD'.

Several Linux distributors mentioned users complaining about unsupported
devices when in fact the device was only unknown to the ID database.
This

Use `Device ABCD' instead of `Unknown device ABCD'.

Several Linux distributors mentioned users complaining about unsupported
devices when in fact the device was only unknown to the ID database.
This little `headological' trick tries to avoid encouraging the users
to such complaints :-)

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Split handling of the ID list to several files.

Implemented control options and the caching logic.

Everything is still in a very raw form.

BSD needs <netinet/in.h>.

Fixed a bug in displaying of zlib errors.

Avoid pointer signedness warnings.

When calling gzopen(), use "rb" file mode instead of "r".

The first try at using DNS for resolving ID's.

Get rid of bzero().

Added support for compressed pci.ids.

Cleaned up usage of `char' and `byte'.

Better displaying of unknown subclasses.

Fixed formatting of programming interfaces.

Introduced the -nn switch.

Hotfix

git-archimport-id: [email protected]/pciutils--main--2.2--patch-82

New names.c

git-archimport-id: [email protected]/pciutils--main--2.2--patch-79

Removed $Id$

Removed CVS $Id$ tags from all files.
git-archimport-id: [email protected]/pciutils--main--2.2--patch-3

Gluing CVS and TLA history: A bug fix which wasn't tracked.

Changed all my email addresses to [email protected].