The comments on excludeDirContents are somewhat imprecise. For
example, none of those directories are actually removed or recreated
on startup, only the contents are.
The comment for pg_replslot is incorrect. I think you can copy
replication slots just fine, but you usually don't want to.
What is the 2 for in this code?
if (strcmp(pathbuf + 2, excludeFile[excludeIdx]) == 0)
I would keep the signature of _tarWriteDir() similar to
_tarWriteHeader(). So don't pass sizeonly in there, or do pass in
sizeonly but do the same with _tarWriteHeader().
The documentation in pg_basebackup.sgml and protocol.sgml should be
updated.
Add some tests. At least test that one entry from the directory list
and one entry from the files list is not contained in the backup
result. Testing the symlink handling would also be good. (The
pg_basebackup tests claim that Windows doesn't support symlinks and
therefore skip all the symlink tests. That seems a bit at odds with
your code handling symlinks on Windows.)
--
Peter Eisentraut http://www.2ndQuadrant.com/
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