btrfs-progs: format FREE_SPACE_TREE{,_VALID} nicely in dump-super

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/cmds-inspect-dump-super.c b/cmds-inspect-dump-super.c
index d9f7bfb..ba0d708 100644 (file)
--- a/cmds-inspect-dump-super.c
+++ b/cmds-inspect-dump-super.c
@@ -197,6 +197,16 @@ struct readable_flag_entry {
        char *output;
 };
 
+#define DEF_COMPAT_RO_FLAG_ENTRY(bit_name)             \
+       {BTRFS_FEATURE_COMPAT_RO_##bit_name, #bit_name}
+
+static struct readable_flag_entry compat_ro_flags_array[] = {
+       DEF_COMPAT_RO_FLAG_ENTRY(FREE_SPACE_TREE),
+       DEF_COMPAT_RO_FLAG_ENTRY(FREE_SPACE_TREE_VALID),
+};
+static const int compat_ro_flags_num = sizeof(compat_ro_flags_array) /
+                                      sizeof(struct readable_flag_entry);
+
 #define DEF_INCOMPAT_FLAG_ENTRY(bit_name)              \
        {BTRFS_FEATURE_INCOMPAT_##bit_name, #bit_name}
 
@@ -268,6 +278,19 @@ static void __print_readable_flag(u64 flag, struct readable_flag_entry *array,
        printf(")\n");
 }
 
+static void print_readable_compat_ro_flag(u64 flag)
+{
+       /*
+        * We know about the FREE_SPACE_TREE{,_VALID} bits, but we don't
+        * actually support them yet.
+        */
+       return __print_readable_flag(flag, compat_ro_flags_array,
+                                    compat_ro_flags_num,
+                                    BTRFS_FEATURE_COMPAT_RO_SUPP |
+                                    BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE |
+                                    BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID);
+}
+
 static void print_readable_incompat_flag(u64 flag)
 {
        return __print_readable_flag(flag, incompat_flags_array,
@@ -377,6 +400,7 @@ static void dump_superblock(struct btrfs_super_block *sb, int full)
               (unsigned long long)btrfs_super_compat_flags(sb));
        printf("compat_ro_flags\t\t0x%llx\n",
               (unsigned long long)btrfs_super_compat_ro_flags(sb));
+       print_readable_compat_ro_flag(btrfs_super_compat_ro_flags(sb));
        printf("incompat_flags\t\t0x%llx\n",
               (unsigned long long)btrfs_super_incompat_flags(sb));
        print_readable_incompat_flag(btrfs_super_incompat_flags(sb));