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Add pg_ls_archive_statusdir function

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This function lists the contents of the WAL archive status directory,
and is intended to be used by monitoring tools.  Unlike pg_ls_dir(),
access to it can be granted to non-superusers so that those monitoring
tools can observe the principle of least privilege.  Access is also
given by default to members of pg_monitor.

Author:  Christoph Moench-Tegeder
Reviewed-by: Aya Iwata
Discussion: https://postgr.es/m/20180930205920.GA64534@elch.exwg.net
This commit is contained in:
Michael Paquier
2018-10-09 22:29:09 +09:00
parent bfa6c5a0c9
commit c481016201
5 changed files with 41 additions and 1 deletions
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9
src/backend/utils/adt/genfile.c
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@ -658,3 +658,12 @@ pg_ls_tmpdir_1arg(PG_FUNCTION_ARGS)
{
return pg_ls_tmpdir(fcinfo, PG_GETARG_OID(0));
}
/*
* Function to return the list of files in the WAL archive status directory.
*/
Datum
pg_ls_archive_statusdir(PG_FUNCTION_ARGS)
{
return pg_ls_dir_files(fcinfo, XLOGDIR "/archive_status", true);
}