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Completely cleans up the horrible shadow_copy2_strip_snapshot()
and adds an explaination of what it's actually trying to do.
* This function does two things.
*
* 1). Checks if an incoming filename is already a
* snapshot converted pathname.
* If so, it returns the pathname truncated
* at the snapshot point which will be used
* as the connectpath, and then does an early return.
*
* 2). Checks if an incoming filename contains an
* SMB-layer @GMT- style timestamp.
* If so, it strips the timestamp, and returns
* both the timestamp and the stripped path
* (making it cwd-relative).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12531
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12531
This is not yet used, the users of this will be added later.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12531
Allows an extra (currently unused) parameter to be added.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Allow the called functions to be fixed to not touch them on error.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12531
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
During path checking, the vfs connectpath_fn is called to
determine the share's root, relative to the file being
queried (for example, in snapshot file this may be other
than the share's "usual" root directory). connectpath_fn
must be able to answer this question even if the path does
not exist and its parent does exist. The convention in this
case is that this refers to a yet-uncreated file under the parent
and all queries are relative to the parent.
This also serves as a workaround for the case where connectpath_fn
has to handle wildcards, as with the case of SMB1 trans2 findfirst.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12172
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Aug 25 05:35:29 CEST 2016 on sn-devel-144
p and name don't change, and we've already calculated this length.
Part of the effort to make the code inside vfs_snapper.c that does
the same thing more similar (we can't make these functions identical
due to the 'snapdir' use case).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12150
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12150
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): Wed Aug 17 05:25:30 CEST 2016 on sn-devel-144
Memory was freed in most of the failure cases. It is always better
to free the memory at the end of the function so that all exit path
of the function will free the memory. Otherwise chances are that
you might miss some cleanup.
Signed-off-by: Rajesh Joseph <rjoseph@redhat.com>
Reviewed-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
With growing number of snapshots file-systems need some mechanism
to differentiate one set of snapshots from other, e.g. monthly, weekly,
manual, special events, etc. Therefore these file-systems provide
different ways to tag snapshots, e.g. provide a configurable way to
name snapshots, which is not just based on time. With only shadow:format
it is very difficult to filter these snapshots.
As part of this change added two new options, shadow:snapprefix and
shadow:delimiter, in shadow_copy2 config. This option will accept regular
expression (BRE) as input. With this optional parameter, one can specify a
variable prefix component for names of the snapshot directories in the
file-system. If this parameter is set, together with the shadow:format and
shadow:delimiter parameters it determines the possible names of snapshot
directories in the file-system.
e.g.
shadow:snapprefix = [a-z]*[0-9]
When this option is provided then shadow:format option should always
start with <delimiter> string. This delimiter is configurable via a new option,
i.e. shadow:delimiter. Default value for this is "_GMT",
e.g. _GMT-%Y.%m.%d-%H.%M.%S
Signed-off-by: Rajesh Joseph <rjoseph@redhat.com>
Reviewed-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Create a separate structure to store module specific information. Currently
only config values are saved. As of now there is no cleaner way to store run-time
information or other module specific information in shadow_copy2 module.
Therefore created a new structure to store all module specific information
including config.
Signed-off-by: Rajesh Joseph <rjoseph@redhat.com>
Reviewed-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
This function returns -1 on error but the return type is
size_t which is unsigned.
Signed-off-by: Rajesh Joseph <rjoseph@redhat.com>
Reviewed-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Get it from parent/deriving smb_filename if present.
Use 0 (as usually this a Windows-style lookup) if
not.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Preparing to reduce use of lp_posix_pathnames().
Uses the same techniques as commit 616d068f0cebb8e50a855b6e30f36fccb7f5a3c8
(synthetic_smb_fname()) to cope with modules that
modify the incoming pathname.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Preparing to reduce use of lp_posix_pathnames().
Uses the same techniques as commit 616d068f0cebb8e50a855b6e30f36fccb7f5a3c8
(synthetic_smb_fname()) to cope with modules that
modify the incoming pathname.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Thu Feb 25 20:46:49 CET 2016 on sn-devel-144
Preparing to reduce use of lp_posix_pathnames().
Uses the same techniques as commit 616d068f0cebb8e50a855b6e30f36fccb7f5a3c8
(synthetic_smb_fname()) to cope with modules that
modify the incoming pathname.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Uri Simchoni <uri@samba.org>
Autobuild-Date(master): Wed Feb 24 16:05:55 CET 2016 on sn-devel-144
Bumps VFS version to 35.
Preparing to reduce use of lp_posix_pathnames().
Most of this is boilerplate, the only subtleties are in
the modules:
vfs_catia.c
vfs_media_harmony.c
vfs_shadow_copy2.c
vfs_unityed_media.c
Where the path is modified then passed to SMB_VFS_NEXT_GET_NT_ACL().
In these cases the change uses synthetic_smb_fname() to
create a new struct smb_filename from the modified path.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <rb@sernet.de>
This is in preparation for handling the quota part
of disk_free via the VFS - each module with a
disk_free_fn should also have a get_quota_fn.
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
This new parameter defines how to get from the snapshot's
root directory to the share's root directory. It is an
alternative to the "basedir" parameter, but functionally
is a superset of basedir.
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Remove the basedir state variable from the module-specific data
of vfs_shadow_copy2 - this variable is not being used.
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
If crossmountpoints is enabled, verify that snapdirseverywhere is
enabled too, since crossmountpoints has no meaning otherwise.
This obviates the check of crossmountpoints against other config
variables.
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Fri Jan 22 01:54:06 CET 2016 on sn-devel-144
Adjust the connect path to the root of the share in the snapshot,
or to the root of the snapshot if the snapshot is "inside" the
share.
This way snapshot symlink regarded as "wide links" if and only if
they point outside the snapshot or they were wide links when
the snapshot was taken.
This allows mounting the snapshots outside the share's root.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11580
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Add a new routine shadow_copy2_do_convert() which is
like shadow_copy2_convert(), but beside calculating the
path of the snapshot file, it also returns the minimum length
of the subpath which is both inside the share and inside the
same snapshot as the file in question, i.e. (at least in the
classical case) the subdirectory of the the snapshot file's
snapshot directory that corresponds to the file's share root.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11580
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
The debug message for the mountpoint option was the
wrong way around. This fixes it, also converting
the message to use DBG_WARNING() while we're touching it.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Uri Simchoni <uri@samba.org>
Autobuild-Date(master): Wed Jan 13 10:56:42 CET 2016 on sn-devel-144
The small_query parameter for SMB_VFS_DISK_FREE() was, prior to the
previous commit, used to obtain 16-bit wide free-space information for
the deprecated dskattr SMB_COM_QUERY_INFORMATION_DISK command.
With the dskattr handler now performing the 16-bit collapse directly,
the small_query parameter can be removed from the entire code path.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Feb 17 05:37:20 CET 2015 on sn-devel-104
The patch "s3-shadow-copy2: Fix dir/@GMT-2012.10.15-13.48.43 form of
paths" takes care of a case marked as TODO, remove it and adjust the
comments accordingly.
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
The previous clause in shadow_copy2_strip_snapshot would only handle @GMT-
at the end of a pathname if it was the *only* pathname component. XP
seems to send @GMT- at the end under certain circumstances even with a
path prefix.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Thu Dec 12 17:58:24 CET 2013 on sn-devel-104
Since I stumbled over this slighly sublte point, I thought it is
worthwile to point it our in a comment.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Wed Dec 11 19:55:20 CET 2013 on sn-devel-104
I was being overly cautious. This is initialization is not
necessary, since further down in the for-loop, the memory
always gets fully initialized because the insert string is
inserted at various slash positions.
So this talloc_zero_array can be skipped: this an expensive
thing to do in virtually every VFS call.
This essentially reverts commit 249e9b4a34d8959bd94735c1921ecfc24d6a2705.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
