A new device state that is not a valid state should return -EINVAL
in the disk set state ioctl.
Signed-off-by: Dan Robertson <dan@dlrobertson.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bch2_fs_ioctl() didn't distinguish between unsupported ioctls and those
which the current user is unauthorised to perform. That kept the code
simple but meant that, for example, an unprivileged TIOCGWINSZ ioctl on
a bcachefs file would return -EPERM instead of the expected -ENOTTY.
The same call made by a privileged user would correctly return -ENOTTY.
Fix this discrepancy by moving the check for CAP_SYS_ADMIN into each
privileged ioctl function.
Signed-off-by: Tobias Geerinckx-Rice <me@tobias.gr>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Fix a possible read out of bounds if bch2_ioctl_fs_usage is called when
replica_entries_bytes is set to a value that is smaller than the size
of bch_replicas_usage.
Signed-off-by: Dan Robertson <dan@dlrobertson.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Do not attempt to cleanup the returned value of bch2_device_lookup if
the returned value was an error pointer. We currently check to see if
the returned value is null and run the cleanup otherwise. As a result,
we attempt to run the cleanup on a error pointer.
Signed-off-by: Dan Robertson <dan@dlrobertson.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This is to make it more amenable for serialization.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
When disk space accounting was changed to be tracked by replicas entry,
the ioctl interface was never update: this patch finally does that.
Aditionally, the BCH_IOCTL_USAGE ioctl is now broken out into separate
ioctls for filesystem and device usage.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Initially forked from drivers/md/bcache, bcachefs is a new copy-on-write
filesystem with every feature you could possibly want.
Website: https://bcachefs.org
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
