1 files changed, 41 insertions, 1 deletions

diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index 5ef0df545a2a..05aed70627e2 100644
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -447,6 +447,46 @@ struct btrfs_ioctl_send_args {
         __u64 reserved[4];              /* in */
 };
 
+/* Error codes as returned by the kernel */
+enum btrfs_err_code {
+        notused,
+        BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET,
+        BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
+        BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
+        BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
+        BTRFS_ERROR_DEV_TGT_REPLACE,
+        BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
+        BTRFS_ERROR_DEV_ONLY_WRITABLE,
+        BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS
+};
+/* An error code to error string mapping for the kernel
+*  error codes
+*/
+static inline char *btrfs_err_str(enum btrfs_err_code err_code)
+{
+        switch (err_code) {
+                case BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET:
+                        return "unable to go below two devices on raid1";
+                case BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET:
+                        return "unable to go below four devices on raid10";
+                case BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET:
+                        return "unable to go below two devices on raid5";
+                case BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET:
+                        return "unable to go below three devices on raid6";
+                case BTRFS_ERROR_DEV_TGT_REPLACE:
+                        return "unable to remove the dev_replace target dev";
+                case BTRFS_ERROR_DEV_MISSING_NOT_FOUND:
+                        return "no missing devices found to remove";
+                case BTRFS_ERROR_DEV_ONLY_WRITABLE:
+                        return "unable to remove the only writeable device";
+                case BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS:
+                        return "add/delete/balance/replace/resize operation "\
+                                "in progress";
+                default:
+                        return NULL;
+        }
+}
+
 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
                                    struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
@@ -530,6 +570,7 @@ struct btrfs_ioctl_send_args {
                                struct btrfs_ioctl_quota_rescan_args)
 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \
                                struct btrfs_ioctl_quota_rescan_args)
+#define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)
 #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \
                                    char[BTRFS_LABEL_SIZE])
 #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \
@@ -538,5 +579,4 @@ struct btrfs_ioctl_send_args {
                                       struct btrfs_ioctl_get_dev_stats)
 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \
                                     struct btrfs_ioctl_dev_replace_args)
-
 #endif /* _UAPI_LINUX_BTRFS_H */