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We must not endian-convert the magic string, just the rest.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Commit bc1c82ea137 "Fix tdb_check() to work with read-only tdb databases."
claimed to do this, but tdb_lockall_read() fails on read-only databases.
Also make sure we can still do tdb_check() inside a transaction (weird,
but we previously allowed it so don't break the API).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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We can end up with dead areas when we die during transaction commit;
tdb_check() fails on such a (valid) database.
This is particularly noticable now we no longer truncate on recovery;
if the recovery area was at the end of the file we used to remove it
that way.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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used in the tdb manpages.
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We saw tdb_lockall() take 71 seconds under heavy load; this is because Linux
(at least) doesn't prevent new small locks being obtained while we're waiting
for a big log.
The workaround is to do divide and conquer using non-blocking chainlocks: if
we get down to a single chain we block. Using a simple test program where
children did "hold lock for 100ms, sleep for 1 second" the time to do
tdb_lockall() dropped signifiantly. There are ln(hashsize) locks taken in
the contended case, but that's slow anyway.
More analysis is given in my blog at http://rusty.ozlabs.org/?p=120
This may also help transactions, though in that case it's the initial
read lock which uses this gradual locking routine; the update-to-write-lock
code is separate and still tries to update in one go.
Even though ABI doesn't change, minor version bumped so behavior change
can be easily detected.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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This is required for Solaris, which needs to link in librt to make use of
fdatasync().
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tdb_lockall() uses F_WRLCK internally, which doesn't work on a fd opened with O_RDONLY. Use tdb_lockall_read() instead.
Jeremy.
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Guenther
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-samba4 suffix for libraries that are bundled.
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metze
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Guenther
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Commit 207a213c/24fed55d purported to fix the problem of signals during
tdb_new_database (which could cause a spurious short write, hence a failure).
However, the code is wrong: newdb+written is not correct.
Fix this by introducing a general tdb_write_all() and using it here and in
the tracing code.
Cc: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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This needed an update to the python tool in waf
thanks to Kai for spotting this
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We now use -fvisibilty=hidden to hide symbols from outside the tdb
shared library.
This also moved tdb_transaction_recover() into the tdb_private.h
header, as it should never have been a public API. For that reason we
are changing the version number. We're only doing a minor version
increment as it is extremely unlikely that anyone was actually using
tdb_transaction_recover() as its locking requirements were rather
unusual.
Pair-Programmed-With: Rusty Russell <rusty@samba.org>
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This is not strictly necessary, as the old types would compare equal,
but it is neater to use the generic type names
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when building library FOO, don't try to find the system library FOO
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
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Building a RPM from the fedora spec file now works with minimal changes
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
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the symlink will get updated with the right target when waf dist is
used in each directory
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Upstream subunit makes a ":" after commands optional, so I've fixed any
places where we might trigger commands accidently. I've filed a bug
about this in subunit.
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This works with both standalone lib builds and bundled builds
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This should be useful for building tarballs from a clean checkout
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when we use a system version of a library such as talloc, then we
no longer get the automtica dependency propogation of talloc implying
libreplace. That means we don't get the includes for libreplace, which
means things can fail to build.
To fix this this change adds an implied_deps option to
CHECK_BUNDLED_SYSTEM(), which tells the samba_deps module to add an
implied dependency on the listed targets if the system library is
chosen.
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distros can set --bundled-libraries=NONE to force use of all system
libraries. If the right version isn't found then configure will fail.
Users may choose which libraries to use from the system, and which to
use bundled libs. The default is to try system libs, and use them if
their version matches the one in the source tree.
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them
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