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Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit 26661218b3d3f0d4ee89039727bc110e972c2851)
The last 3 patches address
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12743
vfs_shadow_copy2 fails to list snapshots from shares with GlusterFS backend
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit 16c89835cf07caa2082b586666095deba38ef962)
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit fffd611fdc558ab428c8a21cf1e68feaf1f6f469)
Found by covscan.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12592
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit e6105f92cd24de49acecd67a9f0c2c53323fe2e9)
Snapshot paths are a read-only filesystem.
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>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Jan 30 22:26:29 CET 2017 on sn-devel-144
(cherry picked from commit 0e1deb77f2b310ad7e5dd784174207adacf1c981)
Rationale:
VFS calls must act like their POSIX equivalents, and the POSIX versions
*only* set errno on a failure. There is actually code in the upper smbd
layers that depends on errno being correct on a fail return from a VFS call.
For a compound VFS module like this, a common pattern is :
SMB_VFS_CALL_X()
{
int ret;
syscall1();
ret = syscall2();
syscall3();
return ret;
}
Where if *any* of the contained syscallX()'s fail, they'll set errno.
However, the actual errno we should return is *only* the one returned
if syscall2() fails (the others are lstat's checking for existence etc.).
So what we should do to correctly return only the errno from syscall2() is:
SMB_VFS_CALL_X()
{
int ret;
int saved_errno = 0;
syscall1()
ret = syscall2();
if (ret == -1) {
saved_errno = errno;
}
syscall3()
if (saved_errno != 0) {
errno = saved_errno;
}
return ret;
}
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>
(cherry picked from commit cda6764f1a8db96182bfd1855440bc6a1ba1abee)
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>
(cherry picked from commit 4d339a88851f601fae195ac8ff0691cbd3504f41)
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>
(cherry picked from commit 128d5f27cd42b0c7efcbe3d28fe3eee881e0734b)
Detects an already converted path. Not yet used.
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>
(cherry picked from commit b94dc85d339c9a10496edd07b85bdd7808d2e332)
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>
(cherry picked from commit cd4f940162b17e4f7345d392326a31ae478230fa)
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>
(cherry picked from commit 42bd1acad75a6b5ea81fe4b30c067dd82623c042)
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>
(cherry picked from commit 27340df4b52e4341f134667c59d71656a7a1fdae)
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>
(cherry picked from commit 9d65107b8f2864dba8d41b3316c483b3f36d0697)
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>
(cherry picked from commit 5aa1ea95157475dfd2d056f0158b14b2b90895a9)
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>
(cherry picked from commit 72fe2b62e3ee7462e5be855b01943f28b26c36c1)
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>
(cherry picked from commit 37ef8d3f65bd1215717eb51b2e1cdb84a7bed348)
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>
(cherry picked from commit 979e39252bcc88e8aacb543b8bf322dd6f17fe7f)
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>
(cherry picked from commit 0a190f4dd950c947d47c42163d11ea4bd6e6e508)
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
