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returns malloc'ed memory.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Wed Jun 1 04:06:12 CEST 2011 on sn-devel-104
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(or NULL).
Part of the efforts to remove PATH_MAX on modern systems.
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Guenther
Autobuild-User: Günther Deschner <gd@samba.org>
Autobuild-Date: Wed May 4 12:31:10 CEST 2011 on sn-devel-104
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This should finally fix the AIX build and allow to remove AIX specific ifdefs.
Guenther
Signed-off-by: Jeremy Allison <jra@samba.org>
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Thu Apr 21 02:01:20 CEST 2011 on sn-devel-104
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(AIX defines open to be open64)
Guenther
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Guenther
Autobuild-User: Günther Deschner <gd@samba.org>
Autobuild-Date: Thu Apr 14 01:31:39 CEST 2011 on sn-devel-104
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Guenther
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Guenther
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Guenther
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open by NtCreateX.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Wed Feb 9 00:55:22 CET 2011 on sn-devel-104
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There are systems where ./configure has detected advanced utimes calls which
are then not available on other kernels. We should do a proper fallback.
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Tue Feb 1 22:37:35 CET 2011 on sn-devel-104
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strict allocation on sparse files. Files opened as POSIX opens are always
sparse.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Tue Dec 21 04:12:22 CET 2010 on sn-devel-104
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allocation extent without changing end-of-file size.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Tue Dec 21 02:41:24 CET 2010 on sn-devel-104
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vfs_fallocate_mode parameter.
It turns out we need the fallocate operations to be able to both
allocate and extend filesize, and to allocate and not extend
filesize, and posix_fallocate can only do the former. So by defining
the vfs op as posix_fallocate we lose the opportunity to use any
underlying syscalls (like Linux fallocate) that can do the latter
as well.
We don't currently use the non-extending filesize call, but now
I've changed the vfs op definition we can in the future. For the
moment simply map the fallocate op onto posix_fallocate for the
VFS_FALLOCATE_EXTEND_SIZE case and return ENOSYS for the
VFS_FALLOCATE_KEEP_SIZE case.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Sat Dec 18 08:59:27 CET 2010 on sn-devel-104
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kept up to date.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Thu Dec 16 23:41:06 CET 2010 on sn-devel-104
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inside pwrite under the covers.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Fri Dec 3 03:39:42 CET 2010 on sn-devel-104
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vfs_slow_fallocate()
and use that from both the truncate and fill_sparse functions.
Jeremy.
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Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Fri Dec 3 02:26:23 CET 2010 on sn-devel-104
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Jeremy.
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module, change the signature of VFS_REALPATH to always return a
malloc'ed string.
Needed to make some privileges work I plan on doing shortly
easier to code.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Sat Nov 20 02:15:50 CET 2010 on sn-devel-104
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neglect to apply appropriate create masks.
Jeremy.
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Guenther
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cross-device rename support has some major limitations:
- on huge files clients will timeout or hang
- ACLs and EA information is not retained
Usually a client will have to handle this. A Windows Server with a reparse
point will also just return NT_STATUS_NOT_SAME_DEVICE. We will now by default
do the same.
I will add a vfs module which will restore the old cross-device renames.
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Ensure we don't use any of the create_options for Samba private
use. Add a new parameter to the VFS_CREATE call (private_flags)
which is only used internally. Renumber NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
and NTCREATEX_OPTIONS_PRIVATE_DENY_FCB to match the S4 code).
Rev. the VFS interface to version 28.
Jeremy.
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this is in preparation for other preallocation methods to be introduced.
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path
this makes the posix_fallocate path work analogous to the manual allocate path.
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this function is only called when strict alloc is set, no reason to check that twice.
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posix_fallocate is more efficient than manual zero'ing the file. When
preallocation in kernel space is supported it's extremely fast. Support for
preallocation at fs layer via posix_fallocate and fallocate at kernel site
can be found in Linux kernel 2.6.23/glibc 2.10 with ext4, XFS and OCFS2. Other
systems that I know of which support fast preallocation in kernel space are
AIX 6.1 with JFS2 and recent Solaris versions with ZFS maybe UFS2, too.
People who have a system with preallocation in kernel space might want to set
"strict allocate = yes". This reduces file fragentation and it's also safer for
setups with quota being turned on.
As of today most systems still don't have preallocation in kernel space, and
that's why "strict allocate = no" will stay the default for now.
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Step 0 to restore it as a per-share paramter
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In very hot codepaths like the statcache copy_smb_filename and the subsequent
recursive talloc_free is noticable in the CPU load.
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This is a hot codepath (called from the stat cache)
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in the "user.DOSATTRIB" EA. From the docs:
In Samba 3.5.0 and above the "user.DOSATTRIB" extended attribute has been extended to store
the create time for a file as well as the DOS attributes. This is done in a backwards compatible
way so files created by Samba 3.5.0 and above can still have the DOS attribute read from this
extended attribute by earlier versions of Samba, but they will not be able to read the create
time stored there. Storing the create time separately from the normal filesystem meta-data
allows Samba to faithfully reproduce NTFS semantics on top of a POSIX filesystem.
Passes make test but will need more testing.
Jeremy.
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Michael
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setting nanosecond timestamps using utimensat() was first supported by Linux
kernel 2.6.22 and glibc 2.6. It's specified in POSIX.1-2008.
This effectively makes us use Windows' full 100ns timestamp resolution -
actually just an improvement from 10^-6 to 10^-7.
For now Linux CIFS vfs will also just be able to make use of 100ns resolution,
not 1ns.
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Always use LSTAT for POSIX pathnames.
Jeremy.
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Jeremy.
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This vop is designed to work in tandem with SMB_VFS_READDIR to allow
vfs modules to make modifications to arbitrary filenames before
they're consumed by callers. Subsequently the core directory
enumeration code in smbd is now changed to free the memory that may be
allocated in a module. This vop enables the new version of catia in
the following patch.
Signed-off-by: Tim Prouty <tprouty@samba.org>
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Office 2003.
Confirmation from reporter that this fixes the issue in master on ext3/ext4.
Back-ports to follow.
Jeremy.
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that stores the create time in the user.DosTimestamps EA.
Jeremy.
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