LU-4665 utils: lfs setstripe to specify OSTs

[fs/lustre-release.git] / lustre / llite / llite_internal.h

diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h
index 4f9b890..fbc51f4 100644 (file)
--- a/lustre/llite/llite_internal.h
+++ b/lustre/llite/llite_internal.h
@@ -966,6 +966,27 @@ void ll_finish_md_op_data(struct md_op_data *op_data);
 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg);
 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen);
 void ll_compute_rootsquash_state(struct ll_sb_info *sbi);
+ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
+                       struct lov_user_md **kbuf);
+
+/* Compute expected user md size when passing in a md from user space */
+static inline ssize_t ll_lov_user_md_size(const struct lov_user_md *lum)
+{
+       switch (lum->lmm_magic) {
+       case LOV_USER_MAGIC_V1:
+               return sizeof(struct lov_user_md_v1);
+       case LOV_USER_MAGIC_V3:
+               return sizeof(struct lov_user_md_v3);
+       case LOV_USER_MAGIC_SPECIFIC:
+               if (lum->lmm_stripe_count > LOV_MAX_STRIPE_COUNT)
+                       return -EINVAL;
+
+               return lov_user_md_size(lum->lmm_stripe_count,
+                                       LOV_USER_MAGIC_SPECIFIC);
+       }
+
+       return -EINVAL;
+}
 
 /* llite/llite_nfs.c */
 extern struct export_operations lustre_export_operations;