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OneFS provides the bulk directory enumeration syscall readdirplus(). This
syscall has the same semantics as the NFSv3 READDIRPLUS command, returning
a batch of directory entries with prefetched stat information via one
syscall.
This commit wraps the readdirplus() call in the existing POSIX
readdir/seekdir VFS interface. By default a batch of 128 directory entries
are optimistically read from the kernel into a global cache, and fed to
iterative calls of VFS_OP_READDIR.
The global buffers could be avoided in the future by hanging connection
specific buffers off the conn struct.
Added new parameter "onefs:use readdirplus" which toggles usage of this
code on or off.
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A few functions in oplocks_onefs.c need to be accessed from the onefs
vfs module. It would be ideal if oplocks were implemented at the vfs
layer, but since they aren't yet, a new header is added to
source3/include to make these functions available to the onefs vfs
module. oplocks_onefs.o doesn't need to be linked into the onefs vfs
module explicitly, since it is already linked into smbd by default.
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This checkin enables setting arbitrary timestamps on files matching
the pattern stored in smb.conf. This was a customer request for a
specific workflow.
Changes include:
1) configuration state machine to avoid tons of string comparisons on
each and every stat.
2) Code to adjust post-stat() times to match time now, or sloptime +
time now.
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Updates the onefs vfs module to add configurable behavior to deal
with sids that are unknown to us. The best examples are aces that
come from robocopy/xcopy.
Adds the following share level options (which are specific to the vfs_onefs
module):
onefs: ignore unmappable sids (Default = false)
If this option is set to true, sids which could not be resolved to
a uid/gid are ignored. If an unmappable sid is encountered as the owner
or group, the owner/group is converted to BUILTIN\Administrators.
onefs: unmappable sids ignore list (Default = empty)
Only the sids in the list are ignored.
onefs: ignore sacls (Default = false)
SACLs are ignored
onefs: unmappable sids deny everyone (Default = false)
If an unmappable sid is found in a deny ACE, the ACE's identity is
changed to Everyone.
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This is the first pass at extending the onefs vfs module to support
the CIFS-specific enhancements available on OneFS. Most of this patch
is massaging the sama open path to work with ifs_createfile.
ifs_createfile is a CIFS-specific syscall for opening/files and
directories. It adds support for:
- Full in-kernel access checks using a windows access_mask
- Cluster-coherent share mode locks
- Cluster-coherent oplocks
- Streams
- Setting security descriptors at create time
- Setting dos_attributes at create time
This patch does not implement the samba side of the streams support or
oplocks support. Tests that expect oplocks to be granted or streams
to be supported will fail. This will be remedied in upcoming patches.
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Add to the OneFS VFS module, support for NTFS ACLs through the calls:
SMB_VFS_FGET_NT_ACL()
SMB_VFS_GET_NT_ACL()
SMB_VFS_FSET_NT_ACL()
Also create several new onefs specific smb.conf parameters in onefs.h
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