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| author | Kent Overstreet <kent.overstreet@linux.dev> | 2023-12-04 20:15:23 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-01 11:47:40 -0500 |
| commit | 2b41226d7f4b3b836a2a3e4ce08ab18ba03f0cd0 (patch) | |
| tree | f8fcc85547c7c832cd757d423388abf4e1774118 /fs/bcachefs/opts.h | |
| parent | bbefcd910d9f992db2d8ba4b8f96a77d8fb131d7 (diff) | |
| download | linux-2b41226d7f4b3b836a2a3e4ce08ab18ba03f0cd0.tar.gz linux-2b41226d7f4b3b836a2a3e4ce08ab18ba03f0cd0.tar.bz2 linux-2b41226d7f4b3b836a2a3e4ce08ab18ba03f0cd0.zip | |
bcachefs: Add ability to redirect log output
Upcoming patches are going to add two new ioctls for running fsck in the
kernel, but pretending that we're running our normal userspace fsck.
This patch adds some plumbing for redirecting our normal log messages
away from the dmesg log to a thread_with_file file descriptor - via a
struct log_output, which will be consumed by the fsck f_op's read method.
The new ioctls will allow for running fsck in the kernel against an
offline filesystem (without mounting it), and an online filesystem. For
an offline filesystem we need a way to pass in a pointer to the
log_output, which is done via a new hidden opts.h option.
For online fsck, we can set c->output directly, but only want to
redirect log messages from the thread running fsck - hence the new
c->output_filter method.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/opts.h')
| -rw-r--r-- | fs/bcachefs/opts.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/bcachefs/opts.h b/fs/bcachefs/opts.h index 8526f177450a..7f9e3001bf55 100644 --- a/fs/bcachefs/opts.h +++ b/fs/bcachefs/opts.h @@ -419,6 +419,11 @@ enum fsck_err_opts { OPT_BOOL(), \ BCH2_NO_SB_OPT, false, \ NULL, "Allocate the buckets_nouse bitmap") \ + x(log_output, u64, \ + 0, \ + OPT_UINT(0, S64_MAX), \ + BCH2_NO_SB_OPT, false, \ + NULL, "Pointer to a struct log_output") \ x(project, u8, \ OPT_INODE, \ OPT_BOOL(), \ |