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Rev Age Author Path Log message Diff
2683 6010 d 5 h jermar /trunk/uspace/srv/vfs/ Introduce the open file lock. Modify vfs_rdwr() to take this lock into account
when reading or writing from/to an open file.
 
2682 6010 d 7 h jermar /trunk/uspace/ Fix type in declaration of VFS node rwlock.
Introduce a dedicated type for futexes. Make the existing futex code use this
newly introduced type and fix formatting in futex.c.
 
2681 6010 d 8 h jermar /trunk/uspace/ Turn the namespace futex into rwlock.  
2680 6010 d 9 h jermar /trunk/uspace/ Add basic rwlock API for uspace so that VFS can be designed/implemented using
this API. So far, the implementation of this API merely wraps futexes into
rwlocks. Real rwlocks are wanted by ticket #54.

Using the new rwlock API, replace the VFS node content futex with an rwlock.
Lock the contents rwlock as reader on reads and as writer on writes.
 
2679 6014 d 1 h jermar /trunk/uspace/srv/vfs/ Rename unlink_futex to namespace_futex and introduce a new futex for serializing
concurrent access to a VFS node's contents by multiple clients.
 
2678 6016 d 4 h jermar /trunk/uspace/ The IPC_M_SHARE_* and IPC_M_DATA_* calls pass through 3 stages. Rename the send,
receive and deliver wrappers to names ending with 'start', 'receive' and
'finalize', respectively. This should make it clearer for dummies.
 
2677 6016 d 5 h jermar /trunk/ Rename IPC_M_AS_AREA_SEND to IPC_M_SHARE_OUT. Rename IPC_M_AS_AREA_RECV to
IPC_M_SHARE_IN. Provide user-friendly wrappers for these methods so that even
dummies can get it right. Some applications using simpler protocols still use
these methods directly.
 
2676 6016 d 11 h jermar /trunk/ Simplify the IPC_M_DATA_WRITE protocol. Do not pass the source address space
virtual address to the recipient. This feature was not used anyway. Now
IPC_M_DATA_WRITE and IPC_M_DATA_READ are feature-aligned.
 
2666 6022 d 1 h jermar /trunk/uspace/srv/ VFS and TMPFS support for VFS_WRITE.  
2663 6024 d 0 h jermar /trunk/uspace/ Reimplement VFS_READ using IPC_M_DATA_READ.  
2660 6024 d 2 h jermar /trunk/ Rename IPC_M_DATA_SEND to IPC_M_DATA_WRITE. Now, when we also add
IPC_M_DATA_READ, it will not clash and cause confusion with userspace wrappers
such as ipc_data_receive(). Rename the forementioned wrappers to
ipc_data_write_send(), ipc_data_write_receive() and ipc_data_write_deliver().
 
2659 6024 d 22 h jermar /trunk/uspace/srv/vfs/ After VFS_READ, update the position pointer in the open file.  
2658 6024 d 22 h jermar /trunk/uspace/srv/ VFS work.
Foundation for TMPFS-side VFS_READ and fixes in VFS-side VFS_READ.
 
2657 6025 d 1 h jermar /trunk/uspace/ VFS work.
Cleaner VFS_MOUNT protocol.
 
2654 6028 d 5 h jermar /trunk/uspace/srv/vfs/ VFS work.
Don't hang up the connection to VFS after VFS_MOUNT.
 
2653 6028 d 5 h jermar /trunk/uspace/srv/vfs/ VFS work.
Index of the last PLB character of a pathname was not correctly calculated.
 
2652 6028 d 5 h jermar /trunk/uspace/srv/vfs/ VFS work.
Fix VFS node hash function to hash only within the limits of its supposed
ranges.
 
2651 6028 d 5 h jermar /trunk/uspace/srv/vfs/ VFS work. Releas the FS phone earlier.  
2650 6028 d 5 h jermar /trunk/uspace/srv/vfs/ VFS work. FS info futex must be initialized.  
2641 6033 d 3 h jermar /trunk/uspace/srv/vfs/ VFS work.
During VFS_REGISTER, use strncmp() instead of strcmp().
Add one excessive convenience byte to vfs_info.name to support the
above-mentioned change. In case the fs name spans all available
characters, make sure this convenience byte is zero.
 

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