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It's much harder to wrap a 64-bit tdb2 than a 32-bit tdb1, but we should still
take care against bugs.
Also, we should *not* cast the length to a size_t when comparing it to
the stat result, in case size_t is 32 bit.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 6f7cb26e589cea081e71c59801eae87178967861)
This allows even more extensibility in future: in particular, the top
bits of each capability tell us what to do if we don't understand it:
fail the open, fail to open for write, or don't try to check the
format.
tdb_check needs to understand the capability list so it can know to
skip over it: each element in the list is prefixed with the type tag
and the length.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 35f198de1851a7d57064546b7ced677b6fabee27)
We currently insist that a tdb file be a version1 file if tdb_open() is
passed the TDB_VERSION1 flag; we fail if it's actually a tdb2.
But that makes generic wrappers harder, and is unlikely to be what the
user wants: if they do, they can check tdb_get_flags() & TDB_VERSION1
after opening.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 9691464a16ef22d6acadfef209666381dfe22b2f)
Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Wed Nov 2 08:38:38 CET 2011 on sn-devel-104
This clarifies the code a little, but also provides a more explicit
mechanism which can be used to debug error handling (by introducing
tdb_err_t and making it a pointer type).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit afa6d57b7d93fe4675a952f556eb462951baa257)
This allows us to simulate the old "volatile" flag for tdb1. It's not
necessary for tdb2.
As this is the last function in tdb1.h, we remove that file.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit b8e64e9346793164651a36eccb3c205077e5c91b)
Finally, we gut tdb1_open() to the tdb1-specific parts, and call it
from tdb_open if they specify the TDB_VERSION1 flag or the version is
a TDB1.
We also unify tdb_close(), based on the TDB_VERSION1 flag.
Note that tdb_open(TDB_VERSION1) will fail on an existing tdb if it's
a TDB2.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit c8c3b3568677e8b0105f84e4ab068c580faf4591)
It also only makes sense with O_CREAT.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit fc44729c471bcdc7ab0410448d991a65e74cec3d)
This replaces the tdb1_open "hash_size" argument. It will only be
valid when you call tdb_open() with O_CREAT in open_flags, and
TDB_VERSION1 in tdb_flags.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 49475d68deecd0b31597ed6094229171d2699b11)
We're going to need access to it from tdb1_open, so expose it now.
It's better in hash.c anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit c8f6f8c2dea76042f74c02eff048847e62adcca6)
Finally, we split out the tdb2-specific parts of tdb_context, and put
them into a "tdb2" sub-struct; the tdb1 parts go into a "tdb1"
sub-struct. We get rido of tdb1_context and use tdb_context
everywhere.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit bbeb528e74c0e234e1f724ac8d54be404cfc6f9a)
Create an iterator over every open tdb (not internal TDBs). This is
useful for re-establishing the tdb1-style active lock for
CLEAR_IF_FIRST.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 1a0c636bc38213bd0322db47529f78f2dc22ffdd)
Instead of a per-file linked list, use a per-tdb list. This is needed
for tdb_foreach().
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 2414f261918b4fb8a549dd385dba32118e37bf85)
This makes it easy to call it again after a fork(), such as for
re-establishing the CLEAR_IF_FIRST files locks.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 937d0babe99dcd315040a9e48430140e63e4a7df)
You can only unset it if the TDB was originally opened O_RDWR.
Also, cleaned up error handling in tdb_allrecord_lock() so we only get
one log message on a r/o database.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit b87e14495d5b07e1b247218a72329f10ecb3da7f)
It's more consistent with what tdb1 does, and slightly more encapsulated.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 6b7c3c840eafbec211b9f58751c5ff754302a68e)
If the caller actually specifies TDB_CONVERT, fail if the TDB does not
need conversion. It's unusual for the user to specify TDB_CONVERT
(it's auto-detected) but better to be strict.
(Imported from CCAN commit 3e3ee8b0c1e77340ab9e8678c2d23646d8cdb627)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The tdb_oob() function can fail due to errors, as well as because the length
asked for is greater than the size of the file. Clean that up:
(1) If probe is true, only fail if there's an error, not if the length is
too great.
(2) Exit tdb_open() if it tdb_oob() probe fails; this helps cut down
test time for failtest.
(3) Don't set probe to true in tdb_direct() fail; a minor issue, but it means
we log failure.
(Imported from CCAN commit 77658070a3e4f712b94d659b2e399031ce3394c8)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
As noted, failtest was taking a long time, because a failure injected here
was not detected.
(Imported from CCAN commit 51f592dfcda4d58d6b9d8134b6e1aff791dc40f2)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is for SAMBA, so we follow their rules and do full license
headers. Two files were missing them.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit 58025731)
Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Wed Aug 31 09:52:43 CEST 2011 on sn-devel-104
