diff options
Diffstat (limited to 'fs/bcachefs/chardev.c')
| -rw-r--r-- | fs/bcachefs/chardev.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/fs/bcachefs/chardev.c b/fs/bcachefs/chardev.c index e6ed64dc11b7..3b8c1409bbf6 100644 --- a/fs/bcachefs/chardev.c +++ b/fs/bcachefs/chardev.c @@ -293,6 +293,38 @@ static long bch2_ioctl_disk_set_state(struct bch_fs *c, return ret; } +static long bch2_ioctl_disk_set_state_v2(struct bch_fs *c, + struct bch_ioctl_disk_set_state_v2 arg) +{ + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if ((arg.flags & ~(BCH_FORCE_IF_DATA_LOST| + BCH_FORCE_IF_METADATA_LOST| + BCH_FORCE_IF_DEGRADED| + BCH_BY_INDEX)) || + arg.pad[0] || arg.pad[1] || arg.pad[2] || + arg.new_state >= BCH_MEMBER_STATE_NR) + return -EINVAL; + + CLASS(bch2_device_lookup, ca)(c, arg.dev, arg.flags); + if (IS_ERR(ca)) + return PTR_ERR(ca); + + CLASS(printbuf, err)(); + int ret = bch2_dev_set_state(c, ca, arg.new_state, arg.flags, &err); + if (ret) { + if (err.pos > arg.err.msg_len) + return -ERANGE; + + prt_printf(&err, "\nerror=%s", bch2_err_str(ret)); + ret = copy_to_user_errcode((void __user *)(ulong)arg.err.msg_ptr, + err.buf, + err.pos) ?: ret; + } + return ret; +} + struct bch_data_ctx { struct thread_with_file thr; @@ -693,6 +725,8 @@ long bch2_fs_ioctl(struct bch_fs *c, unsigned cmd, void __user *arg) BCH_IOCTL(disk_offline, struct bch_ioctl_disk); case BCH_IOCTL_DISK_SET_STATE: BCH_IOCTL(disk_set_state, struct bch_ioctl_disk_set_state); + case BCH_IOCTL_DISK_SET_STATE_v2: + BCH_IOCTL(disk_set_state_v2, struct bch_ioctl_disk_set_state_v2); case BCH_IOCTL_DATA: BCH_IOCTL(data, struct bch_ioctl_data); case BCH_IOCTL_DISK_RESIZE: |