Virgil Dupras
a391f85c00
fs: implement GetC, PutC, Seek and Tell on file handle
...
Very coarse, but I got them to work.
2019-04-23 19:42:10 -04:00
Virgil Dupras
f00334ec89
fs: add private "blk" routines
...
This way, we can interact with the mounted FS even when we change the
selected blkdev.
2019-04-23 15:50:26 -04:00
Virgil Dupras
3ba0a707e7
blockdev: remove a layer of indirection in block routine storage
...
This will facilitate "copying" blk selection in FS.
2019-04-23 15:03:23 -04:00
Virgil Dupras
5eca14d49a
fs: implement fsNext
...
This allows more than one file to be allocated. `fls` properly lists
multiple files.
2019-04-23 12:04:09 -04:00
Virgil Dupras
c0dbee78de
New part: fs
...
Very incomplete, but if you play your cards right, you can, with the
shell:
1. Create a new CFS
2. Mount it
3. Allocate a file with an arbitrary name
4. Have it listed with `fls`
2019-04-23 09:37:22 -04:00
Virgil Dupras
07fde3cab5
blockdev: move the new seek mode logic into the seek command
...
It wasn't a good idea to complicate all blockdev impls with complicated
seeks. Let's just stay in absolute mode for now.
2019-04-23 08:33:32 -04:00
Virgil Dupras
f87cd0485a
blockdev: make "seek" print out its resulting position
...
Also, extract commands into blockdev_cmds to avoid making blockdev
dependent on stdio.
2019-04-22 22:54:23 -04:00
Virgil Dupras
8b7faa1f02
blockdev: add "type" argument to blkSeek
...
Allows seeking forward, backwards, to the beginning, to the end.
2019-04-22 22:28:35 -04:00
Virgil Dupras
1bcceb949c
blockdev: add Tell and fix blkGetCW
...
Calling on blkGetC repeatedly was somehow very unstable and often
failed. I didn't pinpoint exactly why, but keeping the call addr around
and calling that instead seems like a better idea anyway.
2019-04-22 17:15:59 -04:00
Virgil Dupras
b4694225c5
blockdev: change GetC API
...
Instead of waiting, GetC always return immediately, with Z indicating if
something was fetched. The "wait" loop is implemented by the called (and
in the new `blkGetCW`).
This simplifies out-of-bounds verifications for storage blockdevs.
2019-04-22 14:26:16 -04:00
Virgil Dupras
21eb64f751
blockdev: remove one layer of indirection
...
The approach used for shell extra commands also works for blockdev. Much
simpler and tighter this way.
2019-04-16 10:17:25 -04:00
Virgil Dupras
a27da6f41a
add mmap part
...
This also introduces the "seek" shell command.
2019-04-16 08:36:26 -04:00
Virgil Dupras
ce49fc15d0
blockdev: reorganize routine pointers
...
Also, add dummy seek reoutine.
2019-04-15 21:56:15 -04:00
Virgil Dupras
c996da8ac8
shell: add error codes to cmds
2019-04-15 20:38:25 -04:00
Virgil Dupras
12c23f52e0
Add blockdev part
...
Also, add the ability for parts to define extra shell commands.
2019-04-15 16:53:11 -04:00
