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Rev Age Author Path Log message Diff
2731 6113 d 12 h jermar /trunk/uspace/srv/ Add the VFS_FREE operation. This operation frees up whatever resources used by
a file system node for which there is no name (i.e. an unlinked node).

Cleanup VFS operations enums and remove unneeded VFS operations.		  
2730 6114 d 14 h jermar /trunk/uspace/srv/ Introduce the notion of VFS node link counts.  
2709 6134 d 9 h jermar /trunk/uspace/srv/vfs/ VFS_OPEN and VFS_WRITE now understand O_APPEND.  
2707 6134 d 10 h jermar /trunk/uspace/ Support for mkdir().  
2704 6135 d 13 h jermar /trunk/uspace/srv/vfs/ Additional VFS lookup flags.  
2700 6142 d 12 h jermar /trunk/uspace/ Introduce the notion of lflag (i.e. lookup flags) to support the ability to
limit the scope of VFS node types that can be opened by open() and opendir(). In
the future, lflag will also specify actions for VFS_LOOKUP handlers that will be
carried out in situations such as the VFS node is not found (e.g. implementation
of mkdir() and open() with O_CREAT in oflag).		  
2693 6148 d 12 h jermar /trunk/uspace/ Add ftruncate() and support for VFS_TRUNCATE to VFS and TMPFS.  
2691 6152 d 6 h jermar /trunk/uspace/srv/vfs/ Improve the API for converting (VFS triplets, size) to VFS nodes by introducing
a new type for results of vfs_lookup_internal().		  
2690 6153 d 3 h jermar /trunk/uspace/srv/ Make a distinction between VFS operations that are common to VFS and FS
implementations, operations that are VFS only and operations that are FS
implementations only.		  
2687 6153 d 5 h jermar /trunk/uspace/srv/ Management of the cached VFS node size.  
2684 6155 d 6 h jermar /trunk/ Add libc and VFS implementation of lseek(), VFS_SEEK resp.
Add the size member to the VFS node structure (not yet initialized).		  
2683 6155 d 9 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 6155 d 11 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 6155 d 12 h jermar /trunk/uspace/ Turn the namespace futex into rwlock.  
2680 6155 d 13 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 6159 d 5 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.		  
2666 6167 d 5 h jermar /trunk/uspace/srv/ VFS and TMPFS support for VFS_WRITE.  
2641 6178 d 7 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.		  
2625 6198 d 7 h jermar /trunk/uspace/srv/vfs/ VFS work.
Proto implementation of VFS_READ.		  
2596 6216 d 8 h jermar /trunk/uspace/srv/vfs/ VFS work.
Implement VFS node hash table management.		  

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