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Update newvfs.md

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Kevin Lange 2014-04-29 12:30:48 -07:00
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@ -20,15 +20,30 @@ typedef int (*chmod_type_t) (struct fs_node *, int mode);
## Design Goals of the New VFS
1. Large file support from the beginning
All 64-bit offsets and sizes.
2. Cached virtual file objects
We currently have "objects that happen to exist from a malloc" and "objects we created from an open() call"...
3. Reference counting so we can actually close files
Specifically, so we can close everything on exit.
4. Unix pipes
The focus of this rewrite is supporting closing of pipes...
5. Permissions
The current VFS can... uh... store them, but doesn't actually respect them.
6. Support for symbolic links
Yeah.
All 64-bit offsets and sizes.
2. Cached virtual file objects
We currently have "objects that happen to exist from a malloc" and "objects we created from an open() call"...
3. Reference counting so we can actually close files
Specifically, so we can close everything on exit.
4. Unix pipes
The focus of this rewrite is supporting closing of pipes...
5. Permissions
The current VFS can... uh... store them, but doesn't actually respect them.
6. Support for symbolic links
Yeah.
7. Ground-up support for polling / file events.
Sleep on multiple, etc.