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Submitter reports print file corruption after 2GB when SMBwrite etc.
always write at EOF. Still working on the fix.
Jeremy.
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Ensure we don't dereference an array with an index of -1.
Jeremy.
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In the child, we fully re-open serverid.tdb, which leads to one fcntl lock for
CLEAR_IF_FIRST detection per smbd. This opens the tdb in the parent and holds
it, so that tdb_reopen_all correctly catches the CLEAR_IF_FIRST bit.
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The notify tdb files are opened at tconX time, which leads to one fcntl lock
for CLEAR_IF_FIRST detection per smbd. This opens the tdbs in the parent and
holds it, so that tdb_reopen_all correctly catches the CLEAR_IF_FIRST bit.
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In the child, we fully re-open messaging.tdb, which leads to one fcntl lock for
CLEAR_IF_FIRST detection per smbd. This opens the tdb in the parent and holds
it, so that tdb_reopen_all correctly catches the CLEAR_IF_FIRST bit.
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Ensure we always write at end-of-file for older write calls.
Jeremy.
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Jeremy.
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This replies to echo requests when the main smbd is stuck somewhere
Signed-off-by: Stefan Metzmacher <metze@samba.org>
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metze
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metze
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metze
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metze
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metze
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metze
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metze
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metze
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metze
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metze
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metze
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metze
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trusted channels
metze
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This boolean option controls whether at exit time the server dumps a list of
files with debug level 0 that were still open for write. This is an
administrative aid to find the files that were potentially corrupt if the
network connection died.
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This is more in line with the rest of the Samba code, like connections_forall
etc.
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Found by Laurent Gaffie <laurent.gaffie@gmail.com>
Thanks for that,
Volker
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make access decisions.
Jeremy.
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Make ea data checks identical for trans2open and trans2mkdir.
Jeremy.
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We use (uid_t)0 here not sec_initial_uid() as make test uses a single user context.
I will revisit this when all the uid check changes are complete.
Jeremy.
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conn token is uid 0.
This simplifies change_to_user() and removes special processing of the assignments
we pass to set_sec_ctx().
Jeremy.
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Jeremy.
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"current_user.XXX"
Will allow me to replace them with accessor functions.
Jeremy.
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Jeremy.
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struct current_user current_user;"."
As requested by Volker, split this into smaller commits.
Jeremy.
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metze
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get_current_nttok(conn)
Centralize the root check into smb1_file_se_access_check()
so this is used by modules/vfs_acl_common.c also.
Jeremy.
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Use accessor functions to get to this value. Tidies up much of
the user context code. Volker, please look at the changes in smbd/uid.c
to familiarize yourself with these changes as I think they make the
logic in there cleaner.
Cause smbd/posix_acls.c code to look at current user context, not
stored context on the conn struct - allows correct use of these
function calls under a become_root()/unbecome_root() pair.
Jeremy.
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Centralize the exit_server_cleanly()
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Typo called LSTAT instead of STAT in the unlink by pathname path.
Jeremy.
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When a samba server process dies hard, it has no chance to clean up its entries
in locking.tdb, brlock.tdb, connections.tdb and sessionid.tdb.
For locking.tdb and brlock.tdb Samba is robust by checking every time we read
an entry from the database if the corresponding process still exists. If it
does not exist anymore, the entry is deleted. This is not 100% failsafe though:
On systems with a limited PID space there is a non-zero chance that between the
smbd's death and the fresh access, the PID is recycled by another long-running
process. This renders all files that had been locked by the killed smbd
potentially unusable until the new process also dies.
This patch is supposed to fix the problem the following way: Every process ID
in every database is augmented by a random 64-bit number that is stored in a
serverid.tdb. Whenever we need to check if a process still exists we know its
PID and the 64-bit number. We look up the PID in serverid.tdb and compare the
64-bit number. If it's the same, the process still is a valid smbd holding the
lock. If it is different, a new smbd has taken over.
I believe this is safe against an smbd that has died hard and the PID has been
taken over by a non-samba process. This process would not have registered
itself with a fresh 64-bit number in serverid.tdb, so the old one still exists
in serverid.tdb. We protect against this case by the parent smbd taking care of
deregistering PIDs from serverid.tdb and the fact that serverid.tdb is
CLEAR_IF_FIRST.
CLEAR_IF_FIRST does not work in a cluster, so the automatic cleanup does not
work when all smbds are restarted. For this, "net serverid wipe" has to be run
before smbd starts up. As a convenience, "net serverid wipedbs" also cleans up
sessionid.tdb and connections.tdb.
While there, this also cleans up overloading connections.tdb with all the
process entries just for messaging_send_all().
Volker
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Found by Laurent Gaffie <laurent.gaffie@gmail.com>.
Thanks!
Volker
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to respond to a read or write."
This reverts commit a6ae7a552f851a399991262377cc0e062e40ac20.
This fixes bug #7222 (All users have full rigths on all shares) (CVE-2010-0728).
(cherry picked from commit 1c9494c76cc9686c61e0966f38528d3318f3176f)
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Ensure we don't use any of the create_options for Samba private
use. Add a new parameter to the VFS_CREATE call (private_flags)
which is only used internally. Renumber NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
and NTCREATEX_OPTIONS_PRIVATE_DENY_FCB to match the S4 code).
Rev. the VFS interface to version 28.
Jeremy.
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