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Add pg_file_settings view and function

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The function and view added here provide a way to look at all settings
in postgresql.conf, any #include'd files, and postgresql.auto.conf
(which is what backs the ALTER SYSTEM command).

The information returned includes the configuration file name, line
number in that file, sequence number indicating when the parameter is
loaded (useful to see if it is later masked by another definition of the
same parameter), parameter name, and what it is set to at that point.
This information is updated on reload of the server.

This is unfiltered, privileged, information and therefore access is
restricted to superusers through the GRANT system.

Author: Sawada Masahiko, various improvements by me.
Reviewers: David Steele
This commit is contained in:
Stephen Frost
2015-05-08 19:09:26 -04:00
parent bab64ef9e8
commit a97e0c3354
7 changed files with 263 additions and 0 deletions
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src/include/utils/builtins.h
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@@ -1100,6 +1100,7 @@ extern Datum quote_nullable(PG_FUNCTION_ARGS);
extern Datum show_config_by_name(PG_FUNCTION_ARGS);
extern Datum set_config_by_name(PG_FUNCTION_ARGS);
extern Datum show_all_settings(PG_FUNCTION_ARGS);
extern Datum show_all_file_settings(PG_FUNCTION_ARGS);
/* lockfuncs.c */
extern Datum pg_lock_status(PG_FUNCTION_ARGS);