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This is a follow up to 69d61453df6019caef4e7960fa78c6a3c51f3d2a to
adjust the API to allow the lower layers allocate memory. Now the
memory can explicitly be freed rather than relying on talloc_tos().
Signed-off-by: Tim Prouty <tprouty@samba.org>
Often times before creating a file, a client will first query to see
if it already exists. Since some systems have a case-insensitive stat
that is called from unix_convert, we can definitively return
STATUS_NO_SUCH_FILE to the client without scanning the whole
directory.
This code path is taken from trans2querypathinfo, but trans2findfirst
still does a full directory scan even though the get_real_filename
(the case-insensitive stat vfs call) can prevent this.
This patch adds the get_real_filename call to the trans2find* path,
and also changes the vfs_default behavior for
SMB_VFS_GET_REAL_FILENAME. Previously, in the absence of a
get_real_filename implementation, we would fallback to the full
directory scan. The default behavior now returns -1 and sets errno to
EOPNOTSUPP. This allows SMB_VFS_GET_REALFILENAME to be called from
trans2* and unix_convert.
By default this VFS call is a NOOP, but the onefs vfs module takes advantage
of it to initialize direntry search caches at the beginning of each
TRANS2_FIND_FIRST, TRANS2_FIND_NEXT, SMBffirst, SMBsearch, and SMBunique
* VFS_OP_READDIR can now provide stat information, take advantage of it
if it's available
* is_visible_file(): optimistically expect the provided stat buffer is
already valid
* dptr_ReadDirName(): refactor code for easier readability, functionality
is the same
being (correctly) used in the can_read/can_write checks for hide unreadable/unwritable
and this is more properly done using the functions in smbd/file_access.c.
Preparing to do NT access checks on all file access.
Jeremy.
(This used to be commit 6bfb06ad95963ae2acb67c4694a98282d3b29faa)
We now never call file_ntimes() directly, every update
is done via smb_set_file_time().
This let samba3 pass the BASE-DELAYWRITE test.
The write time is only updated 2 seconds after the
first write() on any open handle to the current time
(not the time of the first write).
Each handle which had write requests updates the write
time to the current time on close().
If the write time is set explicit via setfileinfo or setpathinfo
the write time is visible directly and a following close
on the same handle doesn't update the write time.
metze
(This used to be commit 2eab212ea2e1bfd8fa716c2c89b2c042f7ba12ea)
If we know the underlying filesystem is case-insensitive, then we
know that it won't help to search for case variations of the requested
name.
Jeremy, please review (and revert if you disagree).
(This used to be commit 9e8b8f8c16612d8a08b55802f4fd9afca5498a7c)
bugs in various places whilst doing this (places that assumed
BOOL == int). I also need to fix the Samba4 pidl generation
(next checkin).
Jeremy.
(This used to be commit f35a266b3cbb3e5fa6a86be60f34fe340a3ca71f)
the main server code paths. We should now be able to cope with
paths up to PATH_MAX length now.
Final job will be to add the TALLOC_CTX * parameter to
unix_convert to make it explicit (for Volker).
Jeremy.
(This used to be commit 7f0db75fb0f24873577dcb758a2ecee74fdc4297)
There are now ony 17 pstrings left in reply.c,
and these will be easy to remove (and I'll be
doing that shortly). Had to fix an interesting
bug in pull_ucs2_base_talloc() when a source
string is not null terminated :-).
Jeremy.
(This used to be commit 0c9a8c4dff10974dbffd2a302ae982896122fcc0)
and make valgrindtest. Final step will be to change srvstr_get_path()
to return talloced memory in the major codepaths.
Jeremy.
(This used to be commit cf6b6f9c3a38b68d2671c753f412772344506742)
interface. More development will come on top of this. Remove the
"mangled map" parameter.
Jeremy.
(This used to be commit dee8beba7a92b8a3f68bbcc59fd0a827f68c7736)
use of directory name cache, 100 by default. Will be needed
to turn this off for *BSD systems.
Jeremy.
(This used to be commit bea8e9840fd65268e649f813eba10502b0c4d721)
that contains some of the fields from the SMB header, removing the need
to access inbuf directly. This right now is used only in the open file
code & friends, and creating that header is only done when needed. This
needs more work, but it is a start.
Jeremy, I'm only checking this into 3_0, please review before I merge it
to _26.
Volker
(This used to be commit ca988f4e79e977160d82e86486972afd15d4acf5)
works from smbclient and Windows, and I am promising to
support and fix both client and server code moving forward.
Still need to test the RPC admin support but I haven't
changed that code.
Jeremy.
(This used to be commit 7a7862c01d07796ef206b255c676ad7dc2cc42fc)
Windows Vista RC1 and RC2 can't delete directory on Samba share
based on work by Joe Meadows <jmeadows@webopolis.com>.
Jeremy.
(This used to be commit 2dab8928769938ab79da7b7ce2d165fc388f9b00)
Move more error code returns to NTSTATUS.
Client test code to follow... See if this
passes the build-farm before I add it into
3.0.25.
Jeremy.
(This used to be commit 83dbbdff345fa9e427c9579183f4380004bf3dd7)
Allow us to correctly refuse to set delete on close on a
non-empty directory. There are still some delete-on-close
wrinkles to be fixed, but I understand how to do that better
now. I'll fix this tomorrow.
Jeremy.
(This used to be commit 029635885825a5562e7974a6f5675cce3bf1b5dc)
watch carefully - so I'm doing it in one transaction so I can
roll back).
Change check_name(), reduce_name() and dptr_create() to
return NTSTATUS. This helps a lot in error path processing
and especially in reduce_name() allows us to ditch the flaky
and error-prone saving of errno and return errors directly.
Jeremy.
(This used to be commit 6133a694aa429d638320e39ffe1c49d172583ccf)
to do the upper layer directories but this is what
everyone is waiting for....
Jeremy.
(This used to be commit 9dafb7f48ca3e7af956b0a7d1720c2546fc4cfb8)
being deleted when hide unreadable set to true.
Here's the scoop.
This one is really interesting. The pattern of deleting a directory is to do a
findfirst to get the first part of the list, then for each name returned it
does a open/set delete on close/close -> thus deleting the file. Then it does a
findnext with the last file name THAT IT JUST DELETED ! Now we can handle this
in the findnext in the case where hide unreadable is set to false as we look
back in our cache of names and just seek to the right point. The bug is
actually fixed in the first hunk of this patch - the one that removes the
is_visible_file() check after SearchDir returns false. We don't actually need
it and in this case it's causing the delete to be aborted because it can't find
the name (doh ! it was just deleted). We don't need it as SearchDir is only
ever called from findnext, and findnext should only ever be returning names we
gave it.
The rest of the patch are the debugs I used to find
the problem but they're generically useful.
Phew - that one took a while to track down.....
Jerry, please merge for 3.0.23 final.
Jeremy.
(This used to be commit cd048cb775f0a8525fc19aa463db07c477521f5b)
(Thanks a lot for all your hard work on this).
We were caching the results of *all* directory
scans, not just the results that match the
client wildcard. This actually made no sense,
as only matches on the client wildcard can be
returned to the client and so might need to
be searched for in the cache. This fixes the
directory cache to only cache entries that we
return to the client.
Jeremy.
(This used to be commit c88af597d042390ff11b26fe802b0b10d0faa6ce)
by saving the UNIX token used to set a delete on close flag,
and using it when doing the delete. libsmbsharemodes.so still
needs updating to cope with this change.
Samba4 torture tests to follow.
Jeremy.
(This used to be commit 23f16cbc2e8cde97c486831e26bcafd4ab4a9654)
of the Samba4 timezone handling code back into Samba3.
Gets rid of "kludge-gmt" and removes the effectiveness
of the parameter "time offset" (I can add this back
in very easily if needed) - it's no longer being
looked at. I'm hoping this will fix the problems people
have been having with DST transitions. I'll start comprehensive
testing tomorrow, but for now all modifications are done.
Splits time get/set functions into srv_XXX and cli_XXX
as they need to look at different timezone offsets.
Get rid of much of the "efficiency" cruft that was
added to Samba back in the day when the C library
timezone handling functions were slow.
Jeremy.
(This used to be commit 414303bc0272f207046b471a0364fa296b67c1f8)
only tell at parse time from the wire if an incoming name
has wildcards or not. If it's a mangled name and we demangle
the demangled name may contain wildcard characters. Ensure
these are ignored.
Jeremy.
(This used to be commit 4cd8e2a96b98ff711905e8c6f416b22440c16062)
