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Rev Age Author Path Log message Diff
3109 5912 d 14 h jermar /trunk/uspace/srv/ Split the 'mount another filesystem here' and 'you are being mounted and the
device is this' mount semantics. Add VFS_MOUNTED VFS operation that corresponds
to the latter and reserve VFS_MOUNT only for the former. Because of this
change, the VFS server does not maintain the mr_node VFS node for the name space
root anymore and the VFS_LOOKUP operation is now not meant to be used on
unmounted file system, not even for looking up the root node of unmounted file
systems. In the light of these changes, TMPFS is now initialized from
tmpfs_mounted() function.
 
3079 5915 d 14 h decky /trunk/uspace/srv/vfs/ disable extensive debugging output  
2958 5931 d 7 h jermar /trunk/uspace/srv/ Make VFS_MOUNT call even when mounting the root file system.  
2957 5931 d 9 h jermar /trunk/uspace/srv/vfs/ Cram VFS_MOUNT into one message. This creates a hidden demand for the sixth IPC
argument as there might be a desire to pass some options/flags in the future.
 
2821 5972 d 4 h jermar /trunk/uspace/srv/vfs/ Update comment.  
2788 5982 d 21 h jermar /trunk/uspace/ Return EBUSY if trying to mount something over an already mounted root FS.
(Contributed by Tim Post)
 
2770 5999 d 8 h jermar /trunk/uspace/ Introduce fs_handle_t, dev_handle_t and fs_index_t.  
2769 6000 d 7 h jermar /trunk/uspace/srv/vfs/ VFS index needs to be treated as uint64_t.  
2768 6000 d 9 h jermar /trunk/uspace/srv/vfs/ Fibril serialization is required when two file systems register contemporarily.  
2766 6001 d 9 h jermar /trunk/uspace/srv/vfs/ Grab the nodes_futex when manipulating node link counts in rename() and
_unlink().

Fix VFS futex definitions and declarations by replacing atomic_t by futex_t.
 
2763 6001 d 12 h jermar /trunk/uspace/ Support for rename().  
2753 6008 d 8 h jermar /trunk/uspace/ Move canonify() to libc so that it can be used also on the libc side.  
2752 6008 d 14 h jermar /trunk/uspace/srv/vfs/ Make VFS canonify path names on lookup.  
2751 6009 d 12 h jermar /trunk/uspace/ Add canonify() for file system path canonization.
Not yet used by VFS.
 
2749 6011 d 7 h jermar /trunk/uspace/srv/vfs/ contents_rwlock should not be acquired as a futex but rather as a rwlock.  
2748 6011 d 8 h jermar /trunk/uspace/srv/vfs/ Support for O_TRUNC.  
2742 6014 d 7 h jermar /trunk/uspace/srv/ Separate creation of a TMPFS node and its linking in the file system name space.
Rename VFS_FREE to VFS_DESTROY and destroy_node() to unlink_node().
 
2740 6020 d 7 h jermar /trunk/uspace/srv/vfs/ Initialize the VFS node properly.  
2735 6022 d 13 h jermar /trunk/uspace/ Support for rmdir(), unlink() and the respective VFS operations.  
2734 6022 d 14 h jermar /trunk/uspace/ Support for close().  
2731 6022 d 16 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 6023 d 18 h jermar /trunk/uspace/srv/ Introduce the notion of VFS node link counts.  
2710 6043 d 10 h jermar /trunk/uspace/ VFS_WRITE and tmpfs_write fixes.  
2709 6043 d 12 h jermar /trunk/uspace/srv/vfs/ VFS_OPEN and VFS_WRITE now understand O_APPEND.  
2708 6043 d 13 h jermar /trunk/uspace/ VFS_OPEN now understands O_CREAT and O_EXCL.  
2707 6043 d 14 h jermar /trunk/uspace/ Support for mkdir().  
2704 6044 d 17 h jermar /trunk/uspace/srv/vfs/ Additional VFS lookup flags.  
2700 6051 d 15 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).
 
2698 6052 d 11 h jermar /trunk/uspace/srv/vfs/ Small fix for VFS_TRUNCATE. Move lookup and registration code to separate
modules.
 
2693 6057 d 16 h jermar /trunk/uspace/ Add ftruncate() and support for VFS_TRUNCATE to VFS and TMPFS.  
2691 6061 d 9 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 6062 d 7 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.
 
2689 6062 d 8 h jermar /trunk/uspace/srv/vfs/ Merge all VFS operations into one file.  
2688 6062 d 8 h jermar /trunk/uspace/ Make uspace rwlock API naming conventions consistent with kernel rwlock API.  
2687 6062 d 8 h jermar /trunk/uspace/srv/ Management of the cached VFS node size.  
2684 6064 d 9 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 6064 d 12 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 6064 d 15 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 6064 d 16 h jermar /trunk/uspace/ Turn the namespace futex into rwlock.  
2680 6064 d 16 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.