Tweaked lfs_fsinfo block_size/block_count fields

Mainly to match superblock ordering and emphasize these are logical
blocks.

Author: geky

lfs.c

@@ -46,7 +46,8 @@ static int lfs_bd_read(lfs_t *lfs,
         lfs_block_t block, lfs_off_t off,
         void *buffer, lfs_size_t size) {
     uint8_t *data = buffer;
-    if (off+size > lfs->cfg->block_size || (lfs->block_count && block >= lfs->block_count)) {
+    if (off+size > lfs->cfg->block_size
+            || (lfs->block_count && block >= lfs->block_count)) {
         return LFS_ERR_CORRUPT;
     }
 
@@ -4509,14 +4510,15 @@ static int lfs_fs_rawstat(lfs_t *lfs, struct lfs_fsinfo *fsinfo) {
         fsinfo->disk_version = superblock.version;
     }
 
+    // filesystem geometry
+    fsinfo->block_size = lfs->cfg->block_size;
+    fsinfo->block_count = lfs->block_count;
+
     // other on-disk configuration, we cache all of these for internal use
     fsinfo->name_max = lfs->name_max;
     fsinfo->file_max = lfs->file_max;
     fsinfo->attr_max = lfs->attr_max;
 
-    fsinfo->block_count = lfs->block_count;
-    fsinfo->block_size = lfs->cfg->block_size;
-
     return 0;
 }
 

lfs.h

@@ -293,6 +293,12 @@ struct lfs_fsinfo {
     // On-disk version.
     uint32_t disk_version;
 
+    // Size of a logical block in bytes.
+    lfs_size_t block_size;
+
+    // Number of logical blocks in filesystem.
+    lfs_size_t block_count;
+
     // Upper limit on the length of file names in bytes.
     lfs_size_t name_max;
 
@@ -301,13 +307,6 @@ struct lfs_fsinfo {
 
     // Upper limit on the size of custom attributes in bytes.
     lfs_size_t attr_max;
-
-    // Number of blocks in filesystem.
-    // May differ from cfg->block_count if autodetected from filesystem.
-    lfs_size_t block_count;
-
-    // Size of block in bytes.
-    lfs_size_t block_size;
 };
 
 // Custom attribute structure, used to describe custom attributes
@@ -440,12 +439,11 @@ typedef struct lfs {
     } free;
 
     const struct lfs_config *cfg;
+    lfs_size_t block_count;
     lfs_size_t name_max;
     lfs_size_t file_max;
     lfs_size_t attr_max;
 
-    lfs_size_t block_count;
-
 #ifdef LFS_MIGRATE
     struct lfs1 *lfs1;
 #endif