Document pg_ls_*dir hiding of directories and special files

It's strange that a directory-listing function does not list all entries
in a directory, so let's at least document it.  This involves

pg_ls_logdir
pg_ls_waldir
pg_ls_archive_statusdir
pg_ls_tmpdir

Backpatch as far back as it applies cleanly (and as far as as each
function exists).  REL_10_STABLE uses different wording, but hopefully
people are not reading docs so old to write new apps anyway.

Author: Justin Pryzby <pryzby@telsasoft.com>
Discussion: https://postgr.es/m/20200305161838.GJ684@telsasoft.com
This commit is contained in:
Alvaro Herrera 2020-03-16 19:12:14 -03:00
parent 55978e28cd
commit a6b5ddf64c
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@ -20311,6 +20311,7 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
(mtime) of each file in the log directory. By default, only superusers (mtime) of each file in the log directory. By default, only superusers
and members of the <literal>pg_monitor</literal> role can use this function. and members of the <literal>pg_monitor</literal> role can use this function.
Access may be granted to others using <command>GRANT</command>. Access may be granted to others using <command>GRANT</command>.
Filenames beginning with a dot, directories, and other special files are not shown.
</para> </para>
<indexterm> <indexterm>
@ -20322,6 +20323,7 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
default only superusers and members of the <literal>pg_monitor</literal> role default only superusers and members of the <literal>pg_monitor</literal> role
can use this function. Access may be granted to others using can use this function. Access may be granted to others using
<command>GRANT</command>. <command>GRANT</command>.
Filenames beginning with a dot, directories, and other special files are not shown.
</para> </para>
<indexterm> <indexterm>