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We don't need to look at the full share-relative path to figure out if
we have a stream name, the original smb_fname is sufficient for this.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Avoid an else, we return in the "true" branch
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Feb 11 21:53:22 UTC 2022 on sn-devel-184
Make it clear that being an alternate data stream handle is much more
a fsp property than a file name property.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Centralize the pattern
if (fsp->base_fsp != NULL) {
fsp = fsp->base_fsp;
}
with a descriptive name.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
To me this is more descriptive than "fsp->base_fsp != NULL". If this
turns out to be a performance problem, I would go and make this a
static inline in smbd/proto.h.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This fixes a use-after-free in smb_full_audit_create_file() when
calling SMB_VFS_CREATE_FILE with fsp->fsp_name as smb_fname.
create_file_unixpath() has this comment:
* This is really subtle. If someone passes in an smb_fname
* where smb_fname actually is taken from fsp->fsp_name, then
* the lifetime of these objects is meant to be the same.
so it seems legitimate to call CREATE_FILE this way.
When CREATE_FILE runs into an error, create_file_unixpath() does a
file_free, which also takes fsp->fsp_name with
it. smb_full_audit_create_file() wants to log the failure including
the smb_fname after NEXT_CREATE_FILE has exited, but this will then
use the already free'ed data.
Fix by only doing the file_free() on an fsp that
create_file_unixpath() created itself.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Feb 10 19:11:33 UTC 2022 on sn-devel-184
This does almost everything that close_file_free() does, but it leaves
the fsp around.
A normal close_file() now calls fsp_unbind_smb() twice. Functionally
this is not a problem, fsp_unbind_smb() is idempotent. The only
potential performance penalty might come from the loops in
remove_smb2_chained_fsp(), but those only are potentially large with
deeply queued smb2 requests. If that turns out to be a problem, we'll
cope with it later. The alternative would be to split up file_free()
into even more routines and make it more difficult to figure out which
of the "rundown/unbind/free" routines to call in any particular
situation.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We are no longer called on base_fsp's in SHUTDOWN_CLOSE. That
simplifies the logic in the common case, we now have a linear flow for
the very often-called close_file()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
To be reused in file_close_user(). Deliberately a separate commit to
make the previous commit easier to understand.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
close_file_free() needs to handle base fsps specially. This can be
simplified a lot if we pass the the open files a second time in case
we encountered base_fsps that we could not immediately delete.
file_close_conn() is not our hot code path, and also we don't expect
many thousand open files that we need to walk a second time.
A subsequent patch will simplify close_file_free(), the complicated
logic is now in files.c, where it IMHO belongs because
file_set_base_fsp() are here as well.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Quite a few places already had this in the caller, but not all. Rename
close_file() to close_file_free() appropriately. We'll factor out
close_file_smb() doing only parts of close_file_free() later.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Centralize calling file_free(), but leave close_fake_file() in for API
symmetry reasons.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Avoid the "needs_fsp_unlink" variable, describe the talloc hierarchy a
bit differently in the comments.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Opening a stream base file only worked if "dirfsp == conn->cwd_fsp":
We have replaced fsp->fsp_name with the full dirfsp->relative pathname
at the point where open_pathref_base_fsp() is called. In case dirfsp
is already a subdirectory in a share, this breaks because the
open_pathref_base_fsp() uses fsp->fsp_name, not the original
dirfsp-relative one.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
conn is not referenced anymore, and we only need the files_struct
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Not yet used.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Tue Feb 1 17:25:45 UTC 2022 on sn-devel-184
As lp_smb2_unix_extensions() currently always returns false,
this code path cannot be executed. This will change once the
whole client and server fixes are in place and tests are passing.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Note there is currently no way to create a POSIX file
handle in SMB2 so this code can't be accessed.
This will remain so until client and server code are ready to
turn on SMB2 POSIX extensions and the tests are in place.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
This allows the server to only enable smb2 unix open handles if
the smb.conf parameter is set and the client client correctly
negotiated smb2 unix on the connection.
Currently there is no "smb2 unix extensions" parameter so
this can never be set to true.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
We need to take SMB1+POSIX into account here and do an LSTAT if it's
a POSIX name.
Remove knownfail.d/posix_sylink_rename
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14911
Signed-off-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Jan 31 16:26:26 UTC 2022 on sn-devel-184
If filename_convert() fails to convert the path, we never call
check_name(). This means we can return an incorrect error code
(NT_STATUS_ACCESS_DENIED) if we ran into a symlink that points
outside the share to a non-readable directory. We need to make
sure in this case we always call check_name().
Remove knownfail.d/symlink_traversal.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14911
Signed-off-by: Jeremy Allison <jra@samba.org>
NT_STATUS_OBJECT_PATH_NOT_FOUND for a path component failure.
NT_STATUS_OBJECT_NAME_NOT_FOUND for a terminal component failure.
Remove:
samba3.blackbox.test_symlink_traversal.SMB1.posix
samba3.blackbox.smbclient_s3.*.Ensure\ widelinks\ are\ restricted\(.*\)
samba3.blackbox.smbclient_s3.*.follow\ symlinks\ \=\ no\(.*\)
in knownfail.d/symlink_traversal as we now pass these. Only one more fix
remaining to get rid of knownfail.d/symlink_traversal completely.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14911
Signed-off-by: Jeremy Allison <jra@samba.org>
Matches the error return from openat_pathref_fsp().
NT_STATUS_OBJECT_PATH_NOT_FOUND is for a bad component in a path, not
a bad terminal symlink.
Remove knownfail.d/simple_posix_open, we now pass.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14911
Signed-off-by: Jeremy Allison <jra@samba.org>
This is an internal xattr that should not be user visible.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14914
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Make 'unix extensions' a synonym for "smb1 unix extensions".
This will allow us to have a separate "smb2 unix extensions"
parameter that we can examine separately.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: David Mulder <dmulder@suse.com>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Jan 25 21:43:59 UTC 2022 on sn-devel-184
This is part two of a cleanup to split this up into a fetch()/marshal()
pair. Allows easy modification of the sd before returning if we need
to add the SMB2+unix mode information here on a SMB2 posix handle.
Also makes the code much clearer.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: David Mulder <dmulder@suse.com>
This is part one of a cleanup to split this up into a fetch()/marshal()
pair. Allows easy modification of the sd before returning if we need
to add the SMB2+unix mode information here on a SMB2 posix handle.
Also makes the code much clearer.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: David Mulder <dmulder@suse.com>
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Jan 18 21:17:43 UTC 2022 on sn-devel-184
The smb.conf is parsed in post mode of a popt callback. The smbd
--build-options parameter should be handled when first encountered
to avoid requiring smb.conf presence.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14945
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
If delete_all_streams() fails.
Found by Andrew Walker <awalker@ixsystems.com>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14944
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Jan 14 03:34:47 UTC 2022 on sn-devel-184
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14942
Remove fsp which is always NULL and replace it with smb_fname->fsp.
Found by covscan.
Signed-off-by: Pavel Filipenský <pfilipen@redhat.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This first gets the clock_gettime_mono() value, converts to an NTTIME (as
this is what is stored in the dos attribute EA), then mixes in 8 bits of
randomness shifted up by 55 bits to cope with poor resolution clocks to
avoid duplicate inodes.
Using 8 bits of randomness on top of an NTTIME gives us around 114
years headroom. We can now guarentee returning a itime-based
fileid in a normal share (storing dos attributes in an EA).
Remove knownfail.d/fileid-unique
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14928
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sat Jan 8 06:35:22 UTC 2022 on sn-devel-184
