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postgresql/src/backend/commands
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Thomas Munro 2b1f580ee2 Remove configure probes for symlink/readlink, and dead code. 
symlink() and readlink() are in SUSv2 and all targeted Unix systems have
them.  We have partial emulation on Windows.  Code that raised runtime
errors on systems without it has been dead for years, so we can remove
that and also references to such systems in the documentation.

Define HAVE_READLINK and HAVE_SYMLINK macros on Unix.  Our Windows
replacement functions based on junction points can't be used for
relative paths or for non-directories, so the macros can be used to
check for full symlink support.  The places that deal with tablespaces
can just use symlink functions without checking the macros.  (If they
did check the macros, they'd need to provide an #else branch with a
runtime or compile time error, and it'd be dead code.)

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CA+hUKGJ3LHeP9w5Fgzdr4G8AnEtJ=z=p6hGDEm4qYGEUX5B6fQ@mail.gmail.com
 		2022-08-05 09:22:56 +12:00
..
Makefile Move parallel vacuum code to vacuumparallel.c. 2021-12-23 11:42:52 +05:30
aggregatecmds.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
alter.c Allow granting SET and ALTER SYSTEM privileges on GUC parameters. 2022-04-06 13:24:33 -04:00
amcmds.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
analyze.c Invent qsort_interruptible(). 2022-07-12 16:30:36 -04:00
async.c Revert the addition of GetMaxBackends() and related stuff. 2022-04-12 14:45:23 -04:00
cluster.c Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00
collationcmds.c Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
comment.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
constraint.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
conversioncmds.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
copy.c Improve two comments related to a boolean DefElem's value 2022-07-11 11:07:33 +09:00
copyfrom.c Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00
copyfromparse.c Fix two issues with HEADER MATCH in COPY 2022-06-23 10:49:20 +09:00
copyto.c Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
createas.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
dbcommands.c Fix formatting and comment typos 2022-08-04 16:41:29 +07:00
define.c Improve two comments related to a boolean DefElem's value 2022-07-11 11:07:33 +09:00
discard.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
dropcmds.c Use list_copy_head() instead of list_truncate(list_copy(...), ...) 2022-07-13 15:03:47 +12:00
event_trigger.c Replace many MemSet calls with struct initialization 2022-07-16 08:50:49 +02:00
explain.c Fix formatting and comment typos 2022-08-04 16:41:29 +07:00
extension.c Fix missed corner cases for grantable permissions on GUCs. 2022-07-19 17:21:55 -04:00
foreigncmds.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
functioncmds.c Replace many MemSet calls with struct initialization 2022-07-16 08:50:49 +02:00
indexcmds.c Rework logic and simplify syntax of REINDEX DATABASE/SYSTEM 2022-07-19 11:45:06 +09:00
lockcmds.c Add support for security invoker views. 2022-03-22 10:28:10 +00:00
matview.c Change internal RelFileNode references to RelFileNumber or RelFileLocator. 2022-07-06 11:39:09 -04:00
opclasscmds.c Fix DDL deparse of CREATE OPERATOR CLASS 2022-05-20 18:52:55 +02:00
operatorcmds.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
policy.c Add construct_array_builtin, deconstruct_array_builtin 2022-07-01 11:23:15 +02:00
portalcmds.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
prepare.c Replace many MemSet calls with struct initialization 2022-07-16 08:50:49 +02:00
proclang.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
publicationcmds.c Tweak detail and hint messages to be consistent with project policy 2022-07-20 09:50:12 +09:00
schemacmds.c Parse/analyze function renaming 2022-03-04 14:50:22 +01:00
seclabel.c Allow granting SET and ALTER SYSTEM privileges on GUC parameters. 2022-04-06 13:24:33 -04:00
sequence.c Use list_copy_head() instead of list_truncate(list_copy(...), ...) 2022-07-13 15:03:47 +12:00
statscmds.c Make the name optional in CREATE STATISTICS. 2022-07-21 19:23:13 +01:00
subscriptioncmds.c Refactor code in charge of grabbing the relations of a subscription 2022-07-27 19:50:06 +09:00
tablecmds.c Feed ObjectAddress to event triggers for ALTER TABLE ATTACH/DETACH 2022-07-31 13:04:43 +09:00
tablespace.c Remove configure probes for symlink/readlink, and dead code. 2022-08-05 09:22:56 +12:00
trigger.c Support TRUNCATE triggers on foreign tables. 2022-07-12 09:18:02 +09:00
tsearchcmds.c Add Boolean node 2022-01-17 10:38:23 +01:00
typecmds.c Replace many MemSet calls with struct initialization 2022-07-16 08:50:49 +02:00
user.c Fix brain fade in e530be2c5c. 2022-07-26 15:12:09 -04:00
vacuum.c Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
vacuumparallel.c Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
variable.c Update copyright for 2022 2022-01-07 19:04:57 -05:00
view.c Parse/analyze function renaming 2022-03-04 14:50:22 +01:00