docs: filesystems: convert bfs.txt to ReST

- Add a SPDX header;
- Adjust document title;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add it to filesystems/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/93991bcc05e419368ee1e585c81057fb2c7c8d2b.1581955849.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 0 insertions, 57 deletions

diff --git a/Documentation/filesystems/bfs.txt b/Documentation/filesystems/bfs.txt
deleted file mode 100644
index 843ce91a2e40..000000000000
--- a/Documentation/filesystems/bfs.txt
+++ /dev/null
@@ -1,57 +0,0 @@
-BFS FILESYSTEM FOR LINUX
-========================
-
-The BFS filesystem is used by SCO UnixWare OS for the /stand slice, which
-usually contains the kernel image and a few other files required for the
-boot process.
-
-In order to access /stand partition under Linux you obviously need to
-know the partition number and the kernel must support UnixWare disk slices
-(CONFIG_UNIXWARE_DISKLABEL config option). However BFS support does not
-depend on having UnixWare disklabel support because one can also mount
-BFS filesystem via loopback:
-
-# losetup /dev/loop0 stand.img
-# mount -t bfs /dev/loop0 /mnt/stand
-
-where stand.img is a file containing the image of BFS filesystem. 
-When you have finished using it and umounted you need to also deallocate
-/dev/loop0 device by:
-
-# losetup -d /dev/loop0
-
-You can simplify mounting by just typing:
-
-# mount -t bfs -o loop stand.img /mnt/stand
-
-this will allocate the first available loopback device (and load loop.o 
-kernel module if necessary) automatically. If the loopback driver is not
-loaded automatically, make sure that you have compiled the module and
-that modprobe is functioning. Beware that umount will not deallocate
-/dev/loopN device if /etc/mtab file on your system is a symbolic link to
-/proc/mounts. You will need to do it manually using "-d" switch of
-losetup(8). Read losetup(8) manpage for more info.
-
-To create the BFS image under UnixWare you need to find out first which
-slice contains it. The command prtvtoc(1M) is your friend:
-
-# prtvtoc /dev/rdsk/c0b0t0d0s0
-
-(assuming your root disk is on target=0, lun=0, bus=0, controller=0). Then you
-look for the slice with tag "STAND", which is usually slice 10. With this
-information you can use dd(1) to create the BFS image:
-
-# umount /stand
-# dd if=/dev/rdsk/c0b0t0d0sa of=stand.img bs=512
-
-Just in case, you can verify that you have done the right thing by checking
-the magic number:
-
-# od -Ad -tx4 stand.img | more
-
-The first 4 bytes should be 0x1badface.
-
-If you have any patches, questions or suggestions regarding this BFS
-implementation please contact the author:
-
-Tigran Aivazian <aivazian.tigran@gmail.com>