From 12c87d95527ec530c52da5272c41038026555897 Mon Sep 17 00:00:00 2001 From: Justin Pryzby Date: Sun, 8 Mar 2020 22:57:54 -0500 Subject: [PATCH v14 4/8] pg_ls_tmpdir to show "isdir" argument.. similar to pg_stat_file(). It's worth breaking the function's return type, since core postgres creates "shared filesets" underneath the temp dirs, and it's unreasonable to not show them here, and the alternative query to show them is unreasaonbly complicated. See following commit which also adds these columns to the other pg_ls_* functions. Although I don't think it matters that they're easily UNIONed, it'd still make great sense if they returned the same columns. Need catversion bump --- doc/src/sgml/func.sgml | 22 +++++++++++--------- src/backend/utils/adt/genfile.c | 4 ++-- src/include/catalog/pg_proc.dat | 8 +++---- src/test/regress/expected/misc_functions.out | 4 ++-- src/test/regress/output/tablespace.source | 4 ++-- 5 files changed, 22 insertions(+), 20 deletions(-) diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 68c7327e1d..b813b19daf 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -21391,12 +21391,12 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup()); setof record - List the name, size, and last modification time of files in the - temporary directory for tablespace. If - tablespace is not provided, the - pg_default tablespace is used. Access is granted - to members of the pg_monitor role and may be - granted to other non-superuser roles. + For the temporary directory within tablespace, + list each file's name, size, last modification time, and a boolean + indicating if it is a directory. If tablespace + is not provided, the pg_default tablespace is used. + Access is granted to members of the pg_monitor role + and may be granted to other non-superuser roles. @@ -21499,14 +21499,16 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup()); pg_ls_tmpdir - pg_ls_tmpdir returns the name, size, and last modified - time (mtime) of each file in the temporary file directory for the specified - tablespace. If tablespace is + pg_ls_tmpdir lists each file in the temporary file + directory for the specified tablespace, along with + its size, last modified time (mtime) and a boolean indicating if the file is a + directory. Directories are used for temporary files shared by parallel + processes. If tablespace is not provided, the pg_default tablespace is used. By default only superusers and members of the pg_monitor role can use this function. Access may be granted to others using GRANT. - Filenames beginning with a dot, directories, and other special files are not shown. + Filenames beginning with a dot and special file types are not shown. diff --git a/src/backend/utils/adt/genfile.c b/src/backend/utils/adt/genfile.c index daae06aa9a..5b10c1df9b 100644 --- a/src/backend/utils/adt/genfile.c +++ b/src/backend/utils/adt/genfile.c @@ -481,7 +481,7 @@ pg_ls_dir_1arg(PG_FUNCTION_ARGS) } /* - * Generic function to return a directory listing of files. + * Generic function to return a directory listing of files (and optionally dirs). * * If the directory isn't there, silently return an empty set if missing_ok. * Other unreadable-directory cases throw an error. @@ -676,7 +676,7 @@ pg_ls_tmpdir(FunctionCallInfo fcinfo, Oid tblspc) TempTablespacePath(path, tblspc); return pg_ls_dir_files(fcinfo, path, - LS_DIR_HISTORIC | LS_DIR_MISSING_OK); + LS_DIR_SKIP_HIDDEN | LS_DIR_SKIP_SPECIAL | LS_DIR_ISDIR | LS_DIR_METADATA | LS_DIR_MISSING_OK); } /* diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat index b1a957fe3e..fae5b5194a 100644 --- a/src/include/catalog/pg_proc.dat +++ b/src/include/catalog/pg_proc.dat @@ -10733,13 +10733,13 @@ { oid => '5029', descr => 'list files in the pgsql_tmp directory', proname => 'pg_ls_tmpdir', procost => '10', prorows => '20', proretset => 't', provolatile => 'v', prorettype => 'record', proargtypes => '', - proallargtypes => '{text,int8,timestamptz}', proargmodes => '{o,o,o}', - proargnames => '{name,size,modification}', prosrc => 'pg_ls_tmpdir_noargs' }, + proallargtypes => '{text,int8,timestamptz,bool}', proargmodes => '{o,o,o,o}', + proargnames => '{name,size,modification,isdir}', prosrc => 'pg_ls_tmpdir_noargs' }, { oid => '5030', descr => 'list files in the pgsql_tmp directory', proname => 'pg_ls_tmpdir', procost => '10', prorows => '20', proretset => 't', provolatile => 'v', prorettype => 'record', proargtypes => 'oid', - proallargtypes => '{oid,text,int8,timestamptz}', proargmodes => '{i,o,o,o}', - proargnames => '{tablespace,name,size,modification}', + proallargtypes => '{oid,text,int8,timestamptz,bool}', proargmodes => '{i,o,o,o,o}', + proargnames => '{tablespace,name,size,modification,isdir}', prosrc => 'pg_ls_tmpdir_1arg' }, { oid => '5032', descr => 'list directory with metadata', proname => 'pg_ls_dir_metadata', procost => '10', prorows => '20', proretset => 't', diff --git a/src/test/regress/expected/misc_functions.out b/src/test/regress/expected/misc_functions.out index 7930909f02..38493de732 100644 --- a/src/test/regress/expected/misc_functions.out +++ b/src/test/regress/expected/misc_functions.out @@ -222,8 +222,8 @@ ERROR: could not open directory "does not exist": No such file or directory -- This tests the missing_ok parameter, which causes pg_ls_tmpdir to succeed even if the tmpdir doesn't exist yet -- The name='' condition is never true, so the function runs to completion but returns zero rows. select * from pg_ls_tmpdir() where name='Does not exist'; - name | size | modification -------+------+-------------- + name | size | modification | isdir +------+------+--------------+------- (0 rows) select name, isdir from pg_ls_dir_metadata('.') where name='.'; diff --git a/src/test/regress/output/tablespace.source b/src/test/regress/output/tablespace.source index a42714bf40..1c88e914e3 100644 --- a/src/test/regress/output/tablespace.source +++ b/src/test/regress/output/tablespace.source @@ -17,8 +17,8 @@ CREATE TABLESPACE regress_tblspace LOCATION '@testtablespace@'; -- The name='' condition is never true, so the function runs to completion but returns zero rows. -- The query is written to ERROR if the tablespace doesn't exist, rather than silently failing to call pg_ls_tmpdir() SELECT c.* FROM (SELECT oid FROM pg_tablespace b WHERE b.spcname='regress_tblspace' UNION SELECT 0 ORDER BY 1 DESC LIMIT 1) AS b , pg_ls_tmpdir(oid) AS c WHERE c.name='Does not exist'; - name | size | modification -------+------+-------------- + name | size | modification | isdir +------+------+--------------+------- (0 rows) -- try setting and resetting some properties for the new tablespace -- 2.17.0