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847 commits

Author SHA1 Message Date
Howard Chu
4d747ff2f9 ITS#8760 fix regression in 0.9.19 2020-10-10 13:10:58 +01:00
Howard Chu
cf3588baae Add -a append option to mdb_load 
To allow reloading of custom-sorted DBs from mdb_dump
 2020-10-10 13:10:34 +01:00
Quanah Gibson-Mount
d9ef7ace69 ITS#8612 Fix Solaris builds with liblmdb 
This patch fixes liblmdb builds on Solaris and derivatives by defining
_POSIX_PTHREAD_SEMANTICS
 2020-10-10 13:10:14 +01:00
Hallvard Furuseth
b9488faae4 Tweak ITS#8722 fix: Use XCURSOR_REFRESH() 
This checks XCURSOR_INITED() and fixes the mn_flags check.
 2020-10-10 13:09:49 +01:00
Hallvard Furuseth
5601781247 XCURSOR_REFRESH() fixups/cleanup 
* Check NUMKEYS(), similar to f34b61f947
  "ITS#8722 fix FIRST_DUP/LAST_DUP cursor bounds check".
* Move XCURSOR_INITED() into XCURSOR_REFRESH().  This adds a check in
  mdb_cursor_put, below /* converted, write the original data first */.
* Factor mc_ki[] out to XCURSOR_REFRESH().
* Replace an mc_pg[] with mp which is equal (mdb_cursor_del0).
 2020-10-10 13:09:39 +01:00
Howard Chu
2b397001a8 ITS#8728 fix MDB_VL32 freeing overflow page 2020-10-10 13:09:09 +01:00
Howard Chu
0e91bde589 ITS#8722 fix FIRST_DUP/LAST_DUP cursor bounds check 2020-10-10 13:06:28 +01:00
Howard Chu
05d5a9d3f6 Doc tweaks 
Note about DB names being C strings
 2020-10-10 13:06:19 +01:00
Howard Chu
27c8cee72d Add mdb_cursor_is_db() 
Return 1 if the cursor is pointing to a named DB record
 2020-10-10 13:06:09 +01:00
Howard Chu
e4cf950264 mdb_dbi_open tweak 
Always save the terminating NUL of the incoming DB name
Stop using the old mdb_open/mdb_close function names
 .. should consider renaming mdb_stat/mdb_drop to mdb_dbi_... too.
 2020-10-10 13:05:55 +01:00
Howard Chu
3585a1eb97 ITS#8704 Fix PREVMETA, rename to PREVSNAPSHOT 
and enforce exclusive access to environment. Also fix txn_begin/pick_meta
to use correct meta page, and reset the flag after successful commit.
 2020-10-10 13:04:50 +01:00
Hallvard Furuseth
16839f9893 Unref ovpages when deleting them 2020-10-10 13:04:37 +01:00
Hallvard Furuseth
73d75c6215 Drop always-false MDB_WRITEMAP test when IS_DIRTY_NW() 2020-10-10 13:04:26 +01:00
Howard Chu
789c71c4c9 ITS#8704 Add MDB_PREVMETA support to tools 2020-10-10 13:04:09 +01:00
Howard Chu
d12ebb655a ITS#8704 Add PREVMETA to envflags() 2020-10-10 13:03:58 +01:00
moneromooo-monero
0158f67c14 ITS#8704 add MDB_PREVMETA flag to mdb_env_open 
used to open the previous meta page, in case the latest one
is corrupted

From https://github.com/LMDB/lmdb/pull/12
 2020-10-10 13:03:36 +01:00
Hallvard Furuseth
b4ddec0bb4 Expose MDB_ENCRYPT flag 2020-10-10 13:03:21 +01:00
Hallvard Furuseth
6e1f74856d Rename mdb_env_getflags->envflags, clarify options 
The old name resembled existing function mdb_env_get_flags().
 2020-10-10 13:03:01 +01:00
Hallvard Furuseth
8b31a4a62b mdb_page_get() can ignore the toplevel spill list 
...when we search dirty list before instead of after spill list.
 2020-10-10 13:02:52 +01:00
Hallvard Furuseth
d6cf476169 Drop mdb_page_get() arg 'level', it's always NULL 2020-10-10 13:01:46 +01:00
Hallvard Furuseth
61b5b6270d Doc fixes 2020-10-10 13:00:52 +01:00
Hallvard Furuseth
24f437df86 Less hungry mdb_pages_xkeep() 
Skip pages that are dirty only in an ancestor txn
 2020-10-10 13:00:42 +01:00
Hallvard Furuseth
972917449d Keep MC_OVPG() == NULL when not MDB_REMAPPING() 
Needed since 418ea8b94e14567ba2be9f9772f38f563a0d7e9c introduced
option MDB_REMAP_CHUNKS.
 2020-10-10 13:00:27 +01:00
Howard Chu
499866aba7 ITS#8699 more for cursor_del ITS#8622 
Set C_DEL flag on reinit'd subcursor
 2020-10-10 13:00:16 +01:00
Howard Chu
81984ab228 Fix 418ea8b94e SEGV on spilled ovpg 
Don't spill an ovpg that is referenced in a cursor
 2020-10-10 13:00:01 +01:00
Hallvard Furuseth
adfa8f758a Drop P_DIRTY, and MDB_WRITEMAP dirty/spill lists 
mt_workid = mt_txnid when WRITEMAP, so dirty pages == "spilled"
pages and mdb_page_flush() does nothing.
 2020-10-10 12:59:16 +01:00
Hallvard Furuseth
f1db84d332 mp_txnid = page state, avoids searching dirty_list 
In nested txns, check mp_txnid to see which txn dirtied the page.
This change will also let us remove the P_DIRTY flag, and keep
some flags in (dirty page).mp_txnid if we should need it.
 2020-10-10 12:59:04 +01:00
Hallvard Furuseth
c83434e178 Demo - move P_DIRTY to P_ADM_FLAGS, page_dirty() 
...to have something substantial to test P_ADM_FLAGS with,
at least until we drop the P_DIRTY flag.
 2020-10-10 12:58:49 +01:00
Hallvard Furuseth
0a99df54af Divide page flags in P_ADM_FLAGS and the rest 
P_ADM_FLAGS flags are tied to the page, even through page_loose-alloc.
OTOH mdb_page_split() should only duplicate the relevant flags.

This is just the code for the feature, P_ADM_FLAGS is 0 for now.
We'll need it for P_HIDESPILL later.
 2020-10-10 12:58:38 +01:00
Hallvard Furuseth
3b55853fe0 Drop unnecessary searches in the spill lists 
Check with IS_MUTABLE() if an MDB_page is spilled, instead of
searching spill lists.  When unspilling, skip parent spill lists.
 2020-10-10 12:58:25 +01:00
Hallvard Furuseth
34461da97b Skip unnecessary mdb_page_get()s when spilling 
Do not bring in pages merely to see if they should be skipped.
 2020-10-10 12:58:11 +01:00
Hallvard Furuseth
6dd5a4d7f6 Protect freelist at end of mdb_freelist_save() 2020-10-10 12:57:59 +01:00
Hallvard Furuseth
12ee1a2d71 Use mdb_page_loose() more 2020-10-10 12:57:46 +01:00
Hallvard Furuseth
0e17ba43a8 Verify final loose_count in mdb_txn_commit() 
Mismatch may indicate that pages leaked or got used twice
in the same snapshot.
 2020-10-10 12:57:36 +01:00
Hallvard Furuseth
4b7e430303 mdb_page_touch: Always set MDB_TXN_ERROR on error 2020-10-10 12:57:23 +01:00
Hallvard Furuseth
9e3603eb9d Fix mdb_enctest() 
Accept a partial ovpage.  I.e. decryption of the beginning
should not depend on the data at the end.
Make the key and IV less regular. (Divisor 67 has period>64.)
 2020-10-10 12:57:10 +01:00
Hallvard Furuseth
214aff2359 Move misplaced OVERFLOW_NOTYET code 
...so it would set pgno,txnid in the MDB_dovpage, not the actual ovpage
 2020-10-10 12:56:52 +01:00
Hallvard Furuseth
74928f6a3b Fix broken mdb_page_get(ovpage) optimization 2020-10-10 12:56:41 +01:00
Hallvard Furuseth
ca8e48d994 Fix last commit - sizeof(pgno_t) and C90 compat 2020-10-10 12:56:25 +01:00
Howard Chu
757378fc1d Scaled back on overflow page work 
Still keeping page header at top of overflow page for now
 2020-10-10 12:56:11 +01:00
Howard Chu
f0f985fa93 checkpoint - moving overflow page headers 
Moving headers outside of overflow page.
 2020-10-10 12:55:58 +01:00
Howard Chu
c7ef535aa9 Data format change: add txnid to page header 2020-10-10 12:55:47 +01:00
Hallvard Furuseth
f16ce88dc8 Trivial encryption when $LMDB_FLAGS = "e" 2020-10-10 12:53:05 +01:00
Hallvard Furuseth
de161fe9d9 Get flags from $LMDB_FLAGS when MDB_TEST 
Now we don't need to tweak the code of callers to test encryption.
 2020-10-10 12:52:51 +01:00
Howard Chu
fafbd42cd2 Save/restore enc IV in page 0 2020-10-10 12:52:37 +01:00
Howard Chu
34c3cfe853 Plug some information leaks 
Zero out decrypted pages before freeing them.
Do proper init on reused loose pages.
 2020-10-10 12:52:22 +01:00
Howard Chu
525a2cce91 Add test code for remap / encryption 2020-10-10 12:52:10 +01:00
Howard Chu
b89f8fc9bc Page-level encryption support 
Currently encrypts all but the meta pages
Still needs to store/retrieve the initialization vector
 2020-10-10 12:51:54 +01:00
Hallvard Furuseth
fbf35a163f Rename mdb_env_close0() -> mdb_env_close_active() 
Hopefully we'll remember now what goes in which function.
 2020-10-10 12:51:42 +01:00
Howard Chu
ad7933ba0c Optimization for mdb_rpage_get() 
The caller already knows if it's using an overflow page, so
pass the number of expected pages in instead of having to
map the page first and check the count there.
 2020-10-10 12:51:23 +01:00