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This will allow us to obtain a private event context for use while we hold
locks in ldb_tdb, that is not shared with the global state of the application.
This will ensure we do not perform other operations while we hold the lock
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Because this uses ldb_private.h we no longer build the
test binary if we are building against a system ldb
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
By doing that, Samba will use a binary search to locate the attributes
rather than an O(n) search, during every search or modify of the database.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
This is instead of checking the number of elements via ltdb->cache->indexlist->num_elements
In turn, this allows us to avoid fetching ltdb->cache->indexlist in the future
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
By doing this, we can be more efficient in locating if we have an index in
the future.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
ltdb_index_transaction_commit() does LDB operations, sets the ldb
error string and returns LDB errors so we should not check the tdb
error code.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Add one use of popt_set_cmdline_credentials().
Fix 80 column limits when cmdline_credentials changes
to popt_get_cmdline_credentials().
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
This was the original intent of 7dd31288a701d772e45b1960ac4ce4cc1be782ed
but was broken in 251aaafe3a9213118ac3a92def9ab2104c40d12a and
hidden by 4bb2958f16cc6af43d113528407d53f0d78b0486.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
search_iterator() is no more memory efficient than search() because all the results
come back at the first res.next() call
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Tue May 2 21:14:22 CEST 2017 on sn-devel-144
On Fedora 25 detection of libsystemd actually fails due to wrong
assumptions in the configure test. conf.CHECK_LIB returns a list
so 'not conf.CHECK_LIB(...)' is always False and we never get to check
libsystemd.
Instead, remember result of checking pkg-config for separate
libsystemd-daemon and libsystemd-journal libraries. If they miss,
attempt to use libsystemd library instead.
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Tue May 2 13:05:43 CEST 2017 on sn-devel-144
This reverts commit 292e46ab12d8ec172c9d3b26330d8d6028a1d5a5.
Processes run by tfork will have a parent pid of 1, they won't be childs
of the caller anymore.
When the source4 samba process uses samba_runcmd_send() to launch smbd
and winbindd the resulting process hierarchy becomes:
PPID PID PGID SID TTY TPGID STAT UID TIME COMMAND
1 516 510 510 ? -1 S 111 0:02 avahi-daemon: running [samba-ad.local]
1 29209 29209 29209 ? -1 Ss 0 0:00 ./bin/samba
29209 29210 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29211 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29213 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29215 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29216 29209 29209 ? -1 R 0 0:00 \_ ./bin/samba
29209 29217 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29218 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29220 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29221 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29222 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29223 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29224 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
29209 29225 29209 29209 ? -1 S 0 0:00 \_ ./bin/samba
1 29214 29209 29209 ? -1 S 0 0:00 ./bin/samba
29214 29219 29219 29219 ? -1 Ss 0 0:00 \_ /home/slow/git/samba/scratch/bin/smbd -D --option=server role check:inhibit=yes --foreground
29219 29236 29219 29219 ? -1 S 0 0:00 \_ /home/slow/git/samba/scratch/bin/smbd -D --option=server role check:inhibit=yes --foreground
29219 29237 29219 29219 ? -1 S 0 0:00 \_ /home/slow/git/samba/scratch/bin/smbd -D --option=server role check:inhibit=yes --foreground
29219 29238 29219 29219 ? -1 S 0 0:00 \_ /home/slow/git/samba/scratch/bin/smbd -D --option=server role check:inhibit=yes --foreground
1 29228 29209 29209 ? -1 S 0 0:00 ./bin/samba
29228 29230 29230 29230 ? -1 Ss 0 0:00 \_ /home/slow/git/samba/scratch/bin/winbindd -D --option=server role check:inhibit=yes --foreground
29230 29239 29230 29230 ? -1 S 0 0:00 \_ /home/slow/git/samba/scratch/bin/winbindd -D --option=server role check:inhibit=yes --foreground
They will still be in the same process group and session, but just not
be a child or subchild. For childs of the source4 samba process this
might be non desirable.
killing all processes by sending a signal to the main samba process
still works, because a pipe is used between the samba process and the
smbd and winbindd childs. Both watch for EOF on the pipe.
In the output above smbd and winbindd are in their own process group ans
session because they call become_daemon().
See also the discussion in this mailthread:
<https://lists.samba.org/archive/samba-technical/2017-April/120257.html>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Sun Apr 30 17:21:05 CEST 2017 on sn-devel-144
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
The current runtime check for robust mutexes in
tdb_runtime_check_for_robust_mutexes() is not thread-safe.
When called in a multi-threaded program where any another thread doesn't
have SIGCHLD blocked, we may end up hung in sigsuspend() waiting for a
SIGCHLD of a child procecss and the signal was delivered to another
thread.
Revert to the previous behaviour of waiting for the child instead of
waiting for the SIGCHLD signal.
Ensure the pid we wait for is not reset to -1 in a toctou race with the
signal handler.
Check whether waitpid() returns ECHILD which can happen if the signal
handler is run by more then one thread in parallel (yes, this can
happen) or if tdb_robust_mutex_wait_for_child() and the signal handler
are racing.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12593
Pair-programmed-with: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Böhme <slow@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Apr 22 09:16:16 CEST 2017 on sn-devel-144
Not currently used - no logic changes inside.
This will make it possible to pass down a long-lived talloc
context from the loading function for modules to use instead
of having them internally all use talloc_autofree_context()
which is a hidden global.
Updated all known module interface numbers, and added a
WHATSNEW.
Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Ralph Böhme <slow@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Apr 22 01:17:00 CEST 2017 on sn-devel-144
triple-fork to avoid handling SIGCHLD in the parent.
This function is a workaround for the problem of using fork() in
library code. In that case the library should avoid setting a global
signal handler for SIGCHLD, because the application may wants to use its
own handler.
status_fd can be used to wait for the child to exit and get its exit
status.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Pair-Programmed-With: Andrew Bartlet <abartlet@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Andrew Bartlet <abartlet@samba.org>
Make it (hopefully more) clear where modules are loaded from.
Signed-off-by: Jakub Hrozek <jakub.hrozek@posteo.se>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlet <abartlet@samba.org>
