Summary:
Fix Dispatcher::symlink() to accept the symlink contents as a StringPiece
rather than a PathComponentPiece. symlink contents can be any arbitrary
string, and are not required to be a valid, normalized path name.
Reviewed By: wez
Differential Revision: D4325380
fbshipit-source-id: 88448bee50ea192c06442dc70042c7d17d49a12f
Summary:
Move the InodeDispatcher class out of the lower-level fusell namespace in
eden/fuse and into the higher-level eden code in eden/fs/inodes. I also
renamed it from InodeDispatcher to EdenDispatcher, in anticipation of it
getting more eden-specific functionality in the future.
The fusell::MountPoint class is now independent of the Dispatcher type, and can
work with any Dispatcher subclass. Previously the MountPoint class was
responsible for owning the InodeDispatcher object. Now its caller (EdenMount
in our case) is responsible for supplying a Dispatcher object that is owned
externally.
Several parts of EdenDispatcher had to be updated as a result of the namespace
move, but I tried to keep this change somewhat minimal. I did update it from
using fusell::DirInode and fusell::FileInode to eden's TreeInode and FileInode
classes directly. However, there still remains more clean-up work to do. I
will split remaining changes out into upcoming diffs.
Reviewed By: bolinfest
Differential Revision: D4257163
fbshipit-source-id: dc9c2526640798f9f924ae2531218ba2c45d1d0a
Summary:
Adds a thrift call that returns the list of materialized entries from the whole tree.
This is intended to be plugged into the mercurial dirstate extension.
Reviewed By: simpkins
Differential Revision: D3851805
fbshipit-source-id: 8429fdb4eeccc32928e8abc154d4e6fd49343556
Summary:
Previously we would simply report the raw pointer address to the kernel and
rely on it to return that same number to us as the file handle, and make sure
that it told us to shut down the handle when it was closed.
This meant that we had no real idea about which files were still open.
For our future live upgrade plans we need to be able to know this so that we
can transfer the appropriate information to our replacement process.
To facilitate this this diff implements a FileHandleMap class that will assign
file handle numbers and keep track of the instances. The number assignment
strategy is the same as it used to be in the common case: we take the address
of the newly created instance and use that 64-bit number as the file handle
number. However, in the future when we transfer the mapping to a new process,
we may experience a collision when subsequently opening a file handle. To deal
with that, we have a bounded number of attempts to assign a random file handle
number.
We don't yet offer a means to iterate the map, but it would be trivial to
expose such an accessor when we're ready to use it.
Since we now keep track of these things via shared_ptr this changes the
appropriate portions of the fuse interface from unique_ptr to shared_ptr.
Reviewed By: simpkins
Differential Revision: D3602364
fbshipit-source-id: dd996339c2838225a2caeee9da16ef99a06c1e2b
Summary: Add stats tracking for eden. Thought it would be best to collect some feedback before I go ahead and add tracking for all of the operations in the "dispatcher_ops" structure.
Reviewed By: simpkins
Differential Revision: D3387902
fbshipit-source-id: 2fdb22d3b7d0248f67255614f82442379e53e212
Summary:
We still have naked pointers at the handoff to the kernel, but now
have a cleaner implementation at the level that we're going to be working at
day to day.
I also renamed `FileHandle::release` to `FileHandle::releasefile` so that it
isn't visually ambiguous with `std::unique_ptr::release` in the
`Dispatcher.cpp` code: `fh.release()` vs `fh->release()` look similar but are
dramatically different in behavior.
Reviewed By: bolinfest
Differential Revision: D3309455
fbshipit-source-id: f8cf055bcd51121048a20f0202988cf0aef1f085
