Changeset 2226cc3 in mainline for uspace/lib/ext4/libext4_types.h

Timestamp:

2012-05-05T15:39:58Z (12 years ago)

Author:

Frantisek Princ <frantisek.princ@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

2add9ec

Parents:

9fc72fb3

Message:

Superblock comments

File:

• uspace/lib/ext4/libext4_types.h (modified) (6 diffs)

uspace/lib/ext4/libext4_types.h

@@ -56 +56 @@
         uint16_t max_mount_count; // Maximal mount count
         uint16_t magic; // Magic signature
-        uint16_t state; // File system state
+        uint16_t state; // Filesystem state
         uint16_t errors; // Behaviour when detecting errors
         uint16_t minor_rev_level; // Minor revision level
@@ -69 +69 @@
         uint32_t first_inode; // First non-reserved inode
         uint16_t inode_size; // Size of inode structure
-        uint16_t block_group_number; // Block group number of this superblock
+        uint16_t block_group_index; // Block group index of this superblock
         uint32_t features_compatible; // Compatible feature set
         uint32_t features_incompatible; // Incompatible feature set
@@ -136 +136 @@
 } __attribute__((packed)) ext4_superblock_t;
 
+
 #define EXT4_SUPERBLOCK_MAGIC           0xEF53
 #define EXT4_SUPERBLOCK_SIZE            1024
@@ -146 +147 @@
  * Misc. filesystem flags
  */
-#define EXT4_SUPERBLOCK_FLAGS_SIGNED_HASH       0x0001  /* Signed dirhash in use */
-#define EXT4_SUPERBLOCK_FLAGS_UNSIGNED_HASH     0x0002  /* Unsigned dirhash in use */
-#define EXT4_SUPERBLOCK_FLAGS_TEST_FILESYS      0x0004  /* to test development code */
-
-/* Compatible features */
+#define EXT4_SUPERBLOCK_FLAGS_SIGNED_HASH       0x0001  // Signed dirhash in use
+#define EXT4_SUPERBLOCK_FLAGS_UNSIGNED_HASH     0x0002  // Unsigned dirhash in use
+#define EXT4_SUPERBLOCK_FLAGS_TEST_FILESYS      0x0004  // to test development code
+
+/*
+ * Filesystem states
+ */
+#define EXT4_SUPERBLOCK_STATE_VALID_FS          0x0001  // Unmounted cleanly
+#define EXT4_SUPERBLOCK_STATE_ERROR_FS          0x0002  // Errors detected
+#define EXT4_SUPERBLOCK_STATE_ORPHAN_FS         0x0004  // Orphans being recovered
+
+/*
+ * Behaviour when errors detected
+ */
+#define EXT4_SUPERBLOCK_ERRORS_CONTINUE         1 // Continue execution
+#define EXT4_SUPERBLOCK_ERRORS_RO                       2 // Remount fs read-only
+#define EXT4_SUPERBLOCK_ERRORS_PANIC            3 // Panic
+#define EXT4_SUPERBLOCK_ERRORS_DEFAULT          EXT4_ERRORS_CONTINUE
+
+/*
+ * Compatible features
+ */
 #define EXT4_FEATURE_COMPAT_DIR_PREALLOC        0x0001
 #define EXT4_FEATURE_COMPAT_IMAGIC_INODES       0x0002
@@ -158 +176 @@
 #define EXT4_FEATURE_COMPAT_DIR_INDEX           0x0020
 
-/* Read-only compatible features */
+/*
+ * Read-only compatible features
+ */
 #define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER     0x0001
 #define EXT4_FEATURE_RO_COMPAT_LARGE_FILE       0x0002
@@ -167 +187 @@
 #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE      0x0040
 
-/* Incompatible features */
+/*
+ * Incompatible features
+ */
 #define EXT4_FEATURE_INCOMPAT_COMPRESSION       0x0001
 #define EXT4_FEATURE_INCOMPAT_FILETYPE          0x0002