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  1. 26 11月, 2008 8 次提交
    • T
      fuse: add fuse_ prefix to several functions · b93f858a
      由 Tejun Heo 提交于 
      Add fuse_ prefix to request_send*() and get_root_inode() as some of
those functions will be exported for CUSE.  With or without CUSE
export, having the function names scoped is a good idea for
debuggability.
Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      b93f858a
    • T
      fuse: implement poll support · 95668a69
      由 Tejun Heo 提交于 
      Implement poll support.  Polled files are indexed using kh in a RB
tree rooted at fuse_conn->polled_files.

Client should send FUSE_NOTIFY_POLL notification once after processing
FUSE_POLL which has FUSE_POLL_SCHEDULE_NOTIFY set.  Sending
notification unconditionally after the latest poll or everytime file
content might have changed is inefficient but won't cause malfunction.

fuse_file_poll() can sleep and requires patches from the following
thread which allows f_op->poll() to sleep.

  http://thread.gmane.org/gmane.linux.kernel/726176Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      95668a69
    • T
      fuse: implement unsolicited notification · 8599396b
      由 Tejun Heo 提交于 
      Clients always used to write only in response to read requests.  To
implement poll efficiently, clients should be able to issue
unsolicited notifications.  This patch implements basic notification
support.

Zero fuse_out_header.unique is now accepted and considered unsolicited
notification and the error field contains notification code.  This
patch doesn't implement any actual notification.
Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      8599396b
    • T
      fuse: add file kernel handle · acf99433
      由 Tejun Heo 提交于 
      The file handle, fuse_file->fh, is opaque value supplied by userland
FUSE server and uniqueness is not guaranteed.  Add file kernel handle,
fuse_file->kh, which is allocated by the kernel on file allocation and
guaranteed to be unique.

This will be used by poll to match notification to the respective file
but can be used for other purposes where unique file handle is
necessary.
Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      acf99433
    • T
      fuse: implement ioctl support · 59efec7b
      由 Tejun Heo 提交于 
      Generic ioctl support is tricky to implement because only the ioctl
implementation itself knows which memory regions need to be read
and/or written.  To support this, fuse client can request retry of
ioctl specifying memory regions to read and write.  Deep copying
(nested pointers) can be implemented by retrying multiple times
resolving one depth of dereference at a time.

For security and cleanliness considerations, ioctl implementation has
restricted mode where the kernel determines data transfer directions
and sizes using the _IOC_*() macros on the ioctl command.  In this
mode, retry is not allowed.

For all FUSE servers, restricted mode is enforced.  Unrestricted ioctl
will be used by CUSE.

Plese read the comment on top of fs/fuse/file.c::fuse_file_do_ioctl()
for more information.
Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      59efec7b
    • T
      fuse: don't let fuse_req->end() put the base reference · e9bb09dd
      由 Tejun Heo 提交于 
      fuse_req->end() was supposed to be put the base reference but there's
no reason why it should.  It only makes things more complex.  Move it
out of ->end() and make it the responsibility of request_end().
Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      e9bb09dd
    • T
      fuse: move FUSE_MINOR to miscdevice.h · 193da609
      由 Tejun Heo 提交于 
      Move FUSE_MINOR to miscdevice.h.  While at it, de-uglify the file.
Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      193da609
    • M
      fuse: style fixes · 1729a16c
      由 Miklos Szeredi 提交于 
      Fix coding style errors reported by checkpatch and others.  Uptdate
copyright date to 2008.
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
      1729a16c
  3. 21 11月, 2008 25 次提交
  5. 20 11月, 2008 7 次提交