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* Reverting accidently commited changes.Michael Meskes2009-12-17
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* Don't unblock SIGQUIT in the SIGQUIT handlerPeter Eisentraut2009-12-16
| | | | | | This was possibly linked to a deadlock-like situation in glibc syslog code invoked by the ereport call in quickdie(). In any case, a signal handler should not unblock its own signal unless there is a specific reason to.
* If there is no sigdelset(), define it as a macro.Peter Eisentraut2009-12-16
| | | | | This removes some duplicate code that recreated the identical workaround when the newer signal API is missing.
* Avoid a premature coercion failure in transformSetOperationTree() whenTom Lane2009-12-16
| | | | | | | | | | | | | | | | presented with an UNKNOWN-type Var, which can happen in cases where an unknown literal appeared in a subquery. While many such cases will fail later on anyway in the planner, there are some cases where the planner is able to flatten the query and replace the Var by the constant before it has to coerce the union column to the final type. I had added this check in 8.4 to provide earlier/better error detection, but it causes a regression for some cases that worked OK before. Fix by not making the check if the input node is UNKNOWN type and not a Const or Param. If it isn't going to work, it will fail anyway at plan time, with the only real loss being inability to provide an error cursor. Per gripe from Britt Piehler. In passing, rename a couple of variables to remove confusion from an inner scope masking the same variable names in an outer scope.
* Several fixes for EXPLAIN (FORMAT YAML), plus one for EXPLAIN (FORMAT JSON).Robert Haas2009-12-16
| | | | | | | | | | | | | | | | | | ExplainSeparatePlans() was busted for both JSON and YAML output - the present code is a holdover from the original version of my machine-readable explain patch, which didn't have the grouping_stack machinery. Also, fix an odd distribution of labor between ExplainBeginGroup() and ExplainYAMLLineStarting() when marking lists with "- ", with each providing one character. This broke the output format for multi-query statements. Also, fix ExplainDummyGroup() for the YAML output format. Along the way, make the YAML format use escape_yaml() in situations where the JSON format uses escape_json(). Right now, it doesn't matter because all the values are known not to need escaping, but it seems safer this way. Finally, I added some comments to better explain what the YAML output format is doing. Greg Sabino Mullane reported the issues with multi-query statements. Analysis and remaining cleanups by me.
* Fixed auto-prepare to not try preparing statements that are not preparable. BugMichael Meskes2009-12-16
| | | | | found and solved by Boszormenyi Zoltan <zb@cybertec.at>, some small adjustments by me.
* Python 3 support in PL/PythonPeter Eisentraut2009-12-15
| | | | | | Behaves more or less unchanged compared to Python 2, but the new language variant is called plpython3u. Documentation describing the naming scheme is included.
* Avoid unnecessary copying of source string when generating a cloned TParser.Tom Lane2009-12-15
| | | | | | | For long source strings the copying results in O(N^2) behavior, and the multiplier can be significant if wide-char conversion is involved. Andres Freund, reviewed by Kevin Grittner.
* Add a hook to let loadable modules get control at ProcessUtility execution,Tom Lane2009-12-15
| | | | | | and use it to extend contrib/pg_stat_statements to track utility commands. Itagaki Takahiro, reviewed by Euler Taveira de Oliveira.
* Support ORDER BY within aggregate function calls, at long last providing aTom Lane2009-12-15
| | | | | | | | | | | | | non-kluge method for controlling the order in which values are fed to an aggregate function. At the same time eliminate the old implementation restriction that DISTINCT was only supported for single-argument aggregates. Possibly release-notable behavioral change: formerly, agg(DISTINCT x) dropped null values of x unconditionally. Now, it does so only if the agg transition function is strict; otherwise nulls are treated as DISTINCT normally would, ie, you get one copy. Andrew Gierth, reviewed by Hitoshi Harada
* Add an EXPLAIN (BUFFERS) option to show buffer-usage statistics.Robert Haas2009-12-15
| | | | | | | | This patch also removes buffer-usage statistics from the track_counts output, since this (or the global server statistics) is deemed to be a better interface to this information. Itagaki Takahiro, reviewed by Euler Taveira de Oliveira.
* Fix pg_ctl initdb without options.Itagaki Takahiro2009-12-15
| | | | Passing NULL string to snprintf is avoided.
* Fix a bug introduced when set-returning SQL functions were made inline-able:Tom Lane2009-12-14
| | | | | | | | | | | | | | we have to cope with the possibility that the declared result rowtype contains dropped columns. This fails in 8.4, as per bug #5240. While at it, be more paranoid about inserting binary coercions when inlining. The pre-8.4 code did not really need to worry about that because it could not inline at all in any case where an added coercion could change the behavior of the function's statement. However, when inlining a SRF we allow sorting, grouping, and set-ops such as UNION. In these cases, modifying one of the targetlist entries that the sort/group/setop depends on could conceivably change the behavior of the function's statement --- so don't inline when such a case applies.
* Additional fixes for large object access control.Itagaki Takahiro2009-12-14
| | | | | | Use pg_largeobject_metadata.oid instead of pg_largeobject.loid to enumerate existing large objects in pg_dump, pg_restore, and contrib modules.
* Allow LDAP authentication to operate in search+bind mode, meaning itMagnus Hagander2009-12-12
| | | | | | | | | | | | | | does a search for the user in the directory first, and then binds with the DN found for this user. This allows for LDAP logins in scenarios where the DN of the user cannot be determined simply by prefix and suffix, such as the case where different users are located in different containers. The old way of authentication can be significantly faster, so it's kept as an option. Robert Fleming and Magnus Hagander
* Fix integer-to-bit-string conversions to handle the first fractional byteTom Lane2009-12-12
| | | | | | | | | correctly when the output bit width is wider than the given integer by something other than a multiple of 8 bits. This has been wrong since I first wrote that code for 8.0 :-(. Kudos to Roman Kononov for being the first to notice, though I didn't use his patch. Per bug #5237.
* Export ExplainBeginOutput() and ExplainEndOutput() for auto_explain.Robert Haas2009-12-12
| | | | | | | | | Without these functions, anyone outside of explain.c can't actually use ExplainPrintPlan, because the ExplainState won't be initialized properly. The user-visible result of this was a crash when using auto_explain with the JSON output format. Report by Euler Taveira de Oliveira. Analysis by Tom Lane. Patch by me.
* Ensure that the result tuple of an EvalPlanQual cycle gets materializedTom Lane2009-12-11
| | | | | | | | before we zap the input tuple. Otherwise, pass-by-reference columns of the result slot are likely to contain just references to the input tuple, leading to big trouble if the pfree'd space is reused. Per trouble report from Jaime Casanova. This is a new bug in the recent rewrite of EvalPlanQual, so nothing to back-patch.
* Add large object access control.Itagaki Takahiro2009-12-11
| | | | | | | A new system catalog pg_largeobject_metadata manages ownership and access privileges of large objects. KaiGai Kohei, reviewed by Jaime Casanova.
* Add YAML to list of EXPLAIN formats. Greg Sabino Mullane, reviewed by ↵Andrew Dunstan2009-12-11
| | | | Takahiro Itagaki.
* PL/Python array supportPeter Eisentraut2009-12-10
| | | | Support arrays as parameters and return values of PL/Python functions.
* Add init[db] option to pg_ctlPeter Eisentraut2009-12-10
| | | | | | | | pg_ctl gets a new mode that runs initdb. Adjust the documentation a bit to not assume that initdb is the only way to run database cluster initialization. But don't replace initdb as the canonical way. Author: Zdenek Kotala <Zdenek.Kotala@Sun.COM>
* Prevent indirect security attacks via changing session-local state withinTom Lane2009-12-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | an allegedly immutable index function. It was previously recognized that we had to prevent such a function from executing SET/RESET ROLE/SESSION AUTHORIZATION, or it could trivially obtain the privileges of the session user. However, since there is in general no privilege checking for changes of session-local state, it is also possible for such a function to change settings in a way that might subvert later operations in the same session. Examples include changing search_path to cause an unexpected function to be called, or replacing an existing prepared statement with another one that will execute a function of the attacker's choosing. The present patch secures VACUUM, ANALYZE, and CREATE INDEX/REINDEX against these threats, which are the same places previously deemed to need protection against the SET ROLE issue. GUC changes are still allowed, since there are many useful cases for that, but we prevent security problems by forcing a rollback of any GUC change after completing the operation. Other cases are handled by throwing an error if any change is attempted; these include temp table creation, closing a cursor, and creating or deleting a prepared statement. (In 7.4, the infrastructure to roll back GUC changes doesn't exist, so we settle for rejecting changes of "search_path" in these contexts.) Original report and patch by Gurjeet Singh, additional analysis by Tom Lane. Security: CVE-2009-4136
* Add notes about updating disk and shared memory size information in theMagnus Hagander2009-12-09
| | | | documentation when doing new major release.
* Reject certificates with embedded NULLs in the commonName field. This stopsMagnus Hagander2009-12-09
| | | | | | | | | | | | | | | | | | attacks where an attacker would put <attack>\0<propername> in the field and trick the validation code that the certificate was for <attack>. This is a very low risk attack since it reuqires the attacker to trick the CA into issuing a certificate with an incorrect field, and the common PostgreSQL deployments are with private CAs, and not external ones. Also, default mode in 8.4 does not do any name validation, and is thus also not vulnerable - but the higher security modes are. Backpatch all the way. Even though versions 8.3.x and before didn't have certificate name validation support, they still exposed this field for the user to perform the validation in the application code, and there is no way to detect this problem through that API. Security: CVE-2009-4034
* Update time zone data files to tzdata release 2009s: DST law changes inTom Lane2009-12-09
| | | | | Antarctica, Argentina, Bangladesh, Fiji, Novokuznetsk, Pakistan, Palestine, Samoa, Syria. Also historical corrections for Hong Kong.
* Add exclusion constraints, which generalize the concept of uniqueness toTom Lane2009-12-07
| | | | | | | | support any indexable commutative operator, not just equality. Two rows violate the exclusion constraint if "row1.col OP row2.col" is TRUE for each of the columns in the constraint. Jeff Davis, reviewed by Robert Haas
* Don't use a duplicate OID for aclexplode().Tom Lane2009-12-06
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* Speed up information schema privilege viewsPeter Eisentraut2009-12-05
| | | | | | | | | | | | | Instead of expensive cross joins to resolve the ACL, add table-returning function aclexplode() that expands the ACL into a useful form, and join against that. Also, implement the role_*_grants views as a thin layer over the respective *_privileges views instead of essentially repeating the same code twice. fixes bug #4596 by Joachim Wieland, with cleanup by me
* Fix bug in temporary file management with subtransactions. A cursor openedHeikki Linnakangas2009-12-03
| | | | | | | | | | | | | in a subtransaction stays open even if the subtransaction is aborted, so any temporary files related to it must stay alive as well. With the patch, we use ResourceOwners to track open temporary files and don't automatically close them at subtransaction end (though in the normal case temporary files are registered with the subtransaction resource owner and will therefore be closed). At end of top transaction, we still check that there's no temporary files marked as close-at-end-of-transaction open, but that's now just a debugging cross-check as the resource owner cleanup should've closed them already.
* thread-safetyBruce Momjian2009-12-02
| | | | Apply full patch to enable thread-safety by default, e.g. doc changes.
* Mark application_name as GUC_REPORT so that the value will be reported backTom Lane2009-12-02
| | | | | | | | to the client by the server. This might seem pretty pointless but apparently it will help pgbouncer, and perhaps other connection poolers. Anyway it's practically free to do so for the normal use-case where appname is only set in the startup packet --- we're just adding a few more bytes to the initial ParameterStatus response packet. Per comments from Marko Kreen.
* Instead of sending application_name as a SET command after the connectionTom Lane2009-12-02
| | | | | | | | | | | is made, include it in the startup-packet options. This makes it work more like every other libpq connection option, in particular it now has the same response to RESET ALL as the rest. This also saves one network round trip for new applications using application_name. The cost is that if the server is pre-8.5, it'll reject the startup packet altogether, forcing us to retry the entire connection cycle. But on balance we shouldn't be optimizing that case in preference to the behavior with a new server, especially when doing so creates visible behavioral oddities. Per discussion.
* psql -f -Bruce Momjian2009-12-01
| | | | | | Adjust psql -f - to behave like a normal file and honor the -1 flag. Report from Robert Haas
* Teach the regular expression functions to do case-insensitive matching andTom Lane2009-12-01
| | | | | | | | | | | | | | | | | | | | locale-dependent character classification properly when the database encoding is UTF8. The previous coding worked okay in single-byte encodings, or in any case for ASCII characters, but failed entirely on multibyte characters. The fix assumes that the <wctype.h> functions use Unicode code points as the wchar representation for Unicode, ie, wchar matches pg_wchar. This is only a partial solution, since we're still stupid about non-ASCII characters in multibyte encodings other than UTF8. The practical effect of that is limited, however, since those cases are generally Far Eastern glyphs for which concepts like case-folding don't apply anyway. Certainly all or nearly all of the field reports of problems have been about UTF8. A more general solution would require switching to the platform's wchar representation for all regex operations; which is possible but would have substantial disadvantages. Let's try this and see if it's sufficient in practice.
* Revert due to Tom's concerns:Bruce Momjian2009-12-01
| | | | | Add ProcessUtility_hook() to handle all DDL to contrib/pg_stat_statements.
* ProcessUtility_hook:Bruce Momjian2009-12-01
| | | | | | Add ProcessUtility_hook() to handle all DDL to contrib/pg_stat_statements. Itagaki Takahiro
* Avoid core dump on empty thesaurus dictionary.Tom Lane2009-11-30
| | | | Per report from Robert Gravsjö.
* Fix session-lifespan memory leak when a plperl function is redefined:Tom Lane2009-11-29
| | | | | | | | we have to tell Perl it can release its compiled copy of the function text. Noted by Alexey Klyukin. Back-patch to 8.2 --- the problem exists further back, but this patch won't work without modification, and it's probably not worth the trouble.
* Error when a specified connection service is not found, instead of ignoring itPeter Eisentraut2009-11-29
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* Add some opr_sanity checks that the lengths of the various argument-infoTom Lane2009-11-29
| | | | | arrays in a pg_proc entry match. Seems like an easy mistake to make when manually adjusting these values in a pg_proc.h entry.
* Remove prefix "ERROR:" from some messages, to make everything consistentPeter Eisentraut2009-11-29
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* Make pg_stat_activity.application_name visible to all users, rather thanTom Lane2009-11-29
| | | | | being hidden when current_query is. Relocate it to a column position more consistent with that behavior. Per discussion.
* Add support for anonymous code blocks (DO blocks) to PL/Perl.Tom Lane2009-11-29
| | | | Joshua Tolley, reviewed by Brendan Jurd and Tim Bunce
* Add support for an application_name parameter, which is displayed inTom Lane2009-11-28
| | | | | | pg_stat_activity and recorded in log entries. Dave Page, reviewed by Andres Freund
* test_fsync:Bruce Momjian2009-11-28
| | | | | Improve test descriptions displayed during test_fsync; increase default loops to 5k.
* Eliminate a lot of list-management overhead within join_search_one_levelTom Lane2009-11-28
| | | | | | | | | | | | | | by adding a requirement that build_join_rel add new join RelOptInfos to the appropriate list immediately at creation. Per report from Robert Haas, the list_concat_unique_ptr() calls that this change eliminates were taking the lion's share of the runtime in larger join problems. This doesn't do anything to fix the fundamental combinatorial explosion in large join problems, but it should push out the threshold of pain a bit further. Note: because this changes the order in which joinrel lists are built, it might result in changes in selected plans in cases where different alternatives have exactly the same costs. There is one example in the regression tests.
* Remove */ characters from declare cursor statements before putting them into aMichael Meskes2009-11-27
| | | | comment.
* If no result is given NOTFOUND should be returned. Check for empty resultMichael Meskes2009-11-27
| | | | string too.
* Added script to check if all rule re-definition in ecpg.addons are indeed usedMichael Meskes2009-11-27
| | | | in the build process. If not the build process will stop with an error message.
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