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By default user processes can't attach a debugger to a process.
So explicitly allow that for all child processes, before calling
the panic action script.
metze
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Tue Oct 4 12:51:35 CEST 2011 on sn-devel-104
My previous patches fixed up all direct TDB callers, but there are a
few utility functions and the db_context functions which are still
using the old -1 / 0 return codes.
It's clearer to fix up all the callers of these too, so everywhere is
consistent: non-zero means an error.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This helps ensure the string cannot be ambiguous, while also ensuring
that it remains simple in the non-cluster case.
The asymmetry of reading get_my_vnn() but writing based on
NONCLUSTER_VNN is acceptable because in the non-clustered case, they
are equal, and in the clustered case we will print the full string.
Andrew Bartlett
This will allow this structure to be shared, and allow us to create a
common messaging system between all Samba processes. Samba4 uses the
task_id to indicate the different tasks within a single unix process.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This brings these helpful utility functions in common, as they are not
based on either loadparm system.
(The 'modules dir' parameter from Samba4 will shortly be removed, so
there is no loss in functionality)
Andrew Bartlett
This brings more functions into util_names.c, and util_names.c into
PARAM_WITHOUT_REG_SRC.
This is not yet a full list, that would formalise the implicit
dependency loop.
Andrew Bartlett
Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Tue May 31 01:43:37 CEST 2011 on sn-devel-104
This means that there is no need for the 'valid.dat' table to be
loaded by anything other than smbd, so the unloader is also removed.
The concept of a 'valid dos character' has been replaced by the hash2
mangle method.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This code wrote to the full buffer in fstrcpy(), pstrcpy() and other
fixed-length string manipulation functions.
The hope of this code was to find out at run time if we were mixing up
pstring and fstring etc, and to record where this came from. It has a
runtime performance impact (particularly if compiled with
--enable-developer).
It is being removed because of the complexity it adds, and the
distinct lack of bugs that this complexity has been credited in
finding.
The macro-based compile-time checking of string sizes remains.
Andrew Bartlett
From the bugreport:
I have a folder with ~90 photos: IMG_XXXX.JPG where XXXX is a four digit
number, almost consecutive (photos from camera for one day).
Current implementation gives about 30 different checksums for this set of
files.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Wed Mar 16 01:15:41 CET 2011 on sn-devel-104
through Get_Pwnam_alloc(), which is the correct wrapper function. We were using
it *some* of the time anyway, so this just makes us properly consistent.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Wed Oct 20 16:02:12 UTC 2010 on sn-devel-104
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
There are error paths in S3 where va_end() is not properly called after
va_start() or va_copy() have been called.
These issues were noted while performing an inspection for S4 bug #6129. Thanks
to Erik Hovland <erik@hovland.org> for the original bug report.
When we run out of file descriptors for some reason, every new
connection forks a child that immediately panics causing smbd to
coredump. This seems unnecessarily harsh; with this code change we
now catch that error and merely log a message about it and exit
without the core dump.
Signed-off-by: Tim Prouty <tprouty@samba.org>
This patch introduces
struct stat_ex {
dev_t st_ex_dev;
ino_t st_ex_ino;
mode_t st_ex_mode;
nlink_t st_ex_nlink;
uid_t st_ex_uid;
gid_t st_ex_gid;
dev_t st_ex_rdev;
off_t st_ex_size;
struct timespec st_ex_atime;
struct timespec st_ex_mtime;
struct timespec st_ex_ctime;
struct timespec st_ex_btime; /* birthtime */
blksize_t st_ex_blksize;
blkcnt_t st_ex_blocks;
};
typedef struct stat_ex SMB_STRUCT_STAT;
It is really large because due to the friendly libc headers playing macro
tricks with fields like st_ino, so I renamed them to st_ex_xxx.
Why this change? To support birthtime, we already have quite a few #ifdef's at
places where it does not really belong. With a stat struct that we control, we
can consolidate the nanosecond timestamps and the birthtime deep in the VFS
stat calls.
At this moment it is triggered by a request to support the birthtime field for
GPFS. GPFS does not extend the system level struct stat, but instead has a
separate call that gets us the additional information beyond posix. Without
being able to do that within the VFS stat calls, that support would have to be
scattered around the main smbd code.
It will very likely break all the onefs modules, but I think the changes will
be reasonably easy to do.
callers pass in a struct user_auth_info * instead. This commit causes
smbc_set_credentials() to print out a message telling callers to use
smbc_set_credentials_with_fallback() instead, as smbc_set_credentials()
has a broken API (no SMBCCTX * pointer). No more global variables used
in the connection manager API for client dfs calls.
Jeremy.
This reverts 193be432. The MADVISE_PROTECT is inherited by all child
processes and cannot be unset. The intention of the original patch was
to protect the parent process, but allow children to be killed in low
memory. Since this isn't possible with the current API, reverting the
whole feature.
Remove the code in memcache that does a TALLOC_FREE on stored pointers. That's a disaster waiting
to happen. If you're storing talloc'ed pointers, you can't know their lifecycle and they should
be deleted when their parent context is deleted, so freeing them at some arbitrary point later
will be a double-free.
Jeremy.
Since it's a function it just sets the local pointer to NULL and basically
is an equivalent to free().
It also claims it's being used for callbacks but isn't used that way
anywhere.
Here is a patch to allow many subsystems to be re-initialized. The only
functional change I made was to remove the null context tracking, as the memory
allocated here is designed to be left for the complete lifetime of the program.
Freeing this early (when all smb contexts are destroyed) could crash other
users of talloc.
Jeremy.
(This used to be commit 8c630efd25)
Brian Sheehan provided a nice patch intended for the 3.0 code base. This
commit applies a similar patch for the 3.3 code base. It adds a new public
function to libsmbclient -- smbc_set_credentials() -- that may be called from
the authentication callback when DFS referrals are in use.
Derrell
(This used to be commit 888f922bd0)
We now open messages.tdb even before we do the become_daemon. become_daemon()
involves a fork and an immediate exit of the parent, thus the
parent_is_longlived argument must be set to false in this case. The parent is
not really long lived :-)
(This used to be commit 4f4781c6d1)
Just a small commit to get a handle on this git thingy. This patch
fixes some missing calls to va_end() to match various calls to va_start()
and VA_COPY().
Tim.
(This used to be commit ec367f307d)
In pstring removal 4ae4b23586, the behaviour of tab_depth was
changed to create an extra debug header (by using the DEBUGLVL
macro).
This extracts the debug level check from DEBUGLVL into
a macro CHECK_DEBUGLVL without the debug header creation
and uses this instead of DEBUGLVL in tab_depth.
Michael
(This used to be commit cbc7d921fa)
Also, don't auto-generate prototypes of the (two) exported functions
but make a start in having handwritten prototypes in dedicated header
files (not in includes.h ... :-)
Michael
(This used to be commit 395f29d8b7)
