This patch implements functionality for following ioctls:
BTRFS_IOC_SCRUB - Starting a btrfs filesystem scrub
Start a btrfs filesystem scrub. The third ioctls argument
is a pointer to a following type:
struct btrfs_ioctl_scrub_args {
__u64 devid; /* in */
__u64 start; /* in */
__u64 end; /* in */
__u64 flags; /* in */
struct btrfs_scrub_progress progress; /* out */
/* pad to 1k */
__u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];
};
Before calling this ioctl, field 'devid' should be filled
with value that represents the device id of the btrfs filesystem
for which the scrub is to be started.
BTRFS_IOC_SCRUB_CANCEL - Canceling scrub of a btrfs filesystem
Cancel a btrfs filesystem scrub if it is running. The third
ioctls argument is ignored.
BTRFS_IOC_SCRUB_PROGRESS - Getting status of a running scrub
Read the status of a running btrfs filesystem scrub. The third
ioctls argument is a pointer to the above mentioned
'struct btrfs_ioctl_scrub_args'. Similarly as with 'BTRFS_IOC_SCRUB',
the 'devid' field should be filled with value that represents the
id of the btrfs device for which the scrub has started. The status
of a running scrub is returned in the field 'progress' which is
of type 'struct btrfs_scrub_progress' and its definition can be
found at:
https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/btrfs.h#L150
Implementation nots:
Ioctls in this patch use type 'struct btrfs_ioctl_scrub_args' as their
third argument. That is the reason why an aproppriate thunk type
definition is added in file 'syscall_types.h'.
Signed-off-by: Filip Bozuta <filip.boz...@syrmia.com>
---
linux-user/ioctls.h | 11 +++++++++++
linux-user/syscall_defs.h | 6 ++++++
linux-user/syscall_types.h | 26 ++++++++++++++++++++++++++
3 files changed, 43 insertions(+)
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index 8665f504bf..bf80615438 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -215,6 +215,17 @@
#ifdef BTRFS_IOC_SUBVOL_SETFLAGS
IOCTL(BTRFS_IOC_SUBVOL_SETFLAGS, IOC_W, MK_PTR(TYPE_ULONGLONG))
#endif
+#ifdef BTRFS_IOC_SCRUB
+ IOCTL(BTRFS_IOC_SCRUB, IOC_RW,
+ MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_scrub_args)))
+#endif
+#ifdef BTRFS_IOC_SCRUB_CANCEL
+ IOCTL(BTRFS_IOC_SCRUB_CANCEL, 0, TYPE_NULL)
+#endif
+#ifdef BTRFS_IOC_SCRUB_PROGRESS
+ IOCTL(BTRFS_IOC_SCRUB_PROGRESS, IOC_RW,
+ MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_scrub_args)))
+#endif
#ifdef BTRFS_IOC_DEV_INFO
IOCTL(BTRFS_IOC_DEV_INFO, IOC_RW,
MK_PTR(MK_STRUCT(STRUCT_btrfs_ioctl_dev_info_args)))
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 3f771ae5d1..589ec3e9b0 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -990,6 +990,12 @@ struct target_rtc_pll_info {
25, abi_ullong)
#define TARGET_BTRFS_IOC_SUBVOL_SETFLAGS TARGET_IOW(BTRFS_IOCTL_MAGIC, \
26, abi_ullong)
+#define TARGET_BTRFS_IOC_SCRUB TARGET_IOWR(BTRFS_IOCTL_MAGIC,\
+ 27, struct btrfs_ioctl_scrub_args)
+#define TARGET_BTRFS_IOC_SCRUB_CANCEL TARGET_IO(BTRFS_IOCTL_MAGIC, \
+ 28)
+#define TARGET_BTRFS_IOC_SCRUB_PROGRESS TARGET_IOWR(BTRFS_IOCTL_MAGIC,\
+ 29, struct btrfs_ioctl_scrub_args)
#define TARGET_BTRFS_IOC_DEV_INFO TARGET_IOWR(BTRFS_IOCTL_MAGIC,\
30, struct btrfs_ioctl_dev_info_args)
#define TARGET_BTRFS_IOC_INO_PATHS TARGET_IOWR(BTRFS_IOCTL_MAGIC,\
diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h
index b4f462b5c6..345193270c 100644
--- a/linux-user/syscall_types.h
+++ b/linux-user/syscall_types.h
@@ -373,6 +373,32 @@ STRUCT(btrfs_ioctl_ino_lookup_user_args,
MK_ARRAY(TYPE_CHAR, BTRFS_VOL_NAME_MAX + 1), /* name */
MK_ARRAY(TYPE_CHAR, BTRFS_INO_LOOKUP_USER_PATH_MAX)) /* path */
+STRUCT(btrfs_scrub_progress,
+ TYPE_ULONGLONG, /* data_extents_scrubbed */
+ TYPE_ULONGLONG, /* tree_extents_scrubbed */
+ TYPE_ULONGLONG, /* data_bytes_scrubbed */
+ TYPE_ULONGLONG, /* tree_bytes_scrubbed */
+ TYPE_ULONGLONG, /* read_errors */
+ TYPE_ULONGLONG, /* csum_errors */
+ TYPE_ULONGLONG, /* verify_errors */
+ TYPE_ULONGLONG, /* no_csum */
+ TYPE_ULONGLONG, /* csum_discards */
+ TYPE_ULONGLONG, /* super_errors */
+ TYPE_ULONGLONG, /* malloc_errors */
+ TYPE_ULONGLONG, /* uncorrectable_errors */
+ TYPE_ULONGLONG, /* corrected_er */
+ TYPE_ULONGLONG, /* last_physical */
+ TYPE_ULONGLONG) /* unverified_errors */
+
+STRUCT(btrfs_ioctl_scrub_args,
+ TYPE_ULONGLONG, /* devid */
+ TYPE_ULONGLONG, /* start */
+ TYPE_ULONGLONG, /* end */
+ TYPE_ULONGLONG, /* flags */
+ MK_STRUCT(STRUCT_btrfs_scrub_progress), /* progress */
+ MK_ARRAY(TYPE_ULONGLONG,
+ (1024 - 32 - sizeof(struct btrfs_scrub_progress)) / 8)) /* unused */
+
STRUCT(btrfs_ioctl_dev_info_args,
TYPE_ULONGLONG, /* devid */
MK_ARRAY(TYPE_CHAR, BTRFS_UUID_SIZE), /* uuid */
--
2.25.1
