btrfs-progs: list: constify prefix arugment

Signed-off-by: David Sterba <dsterba@suse.com>

2 files changed, 5 insertions, 4 deletions

diff --git a/btrfs-list.c b/btrfs-list.c
index 89769bc1..5d9a79ab 100644
--- a/btrfs-list.c
+++ b/btrfs-list.c
@@ -1374,7 +1374,8 @@ static void print_subvolume_column(struct root_info *subv,
 	}
 }
 
-static void print_single_volume_info_raw(struct root_info *subv, char *raw_prefix)
+static void print_single_volume_info_raw(struct root_info *subv,
+		const char *raw_prefix)
 {
 	int i;
 
@@ -1456,7 +1457,7 @@ static void print_all_volume_info_tab_head(void)
 }
 
 static void print_all_volume_info(struct root_lookup *sorted_tree,
-				  int layout, char *raw_prefix)
+				  int layout, const char *raw_prefix)
 {
 	struct rb_node *n;
 	struct root_info *entry;
@@ -1503,7 +1504,7 @@ static int btrfs_list_subvols(int fd, struct root_lookup *root_lookup)
 
 int btrfs_list_subvols_print(int fd, struct btrfs_list_filter_set *filter_set,
 		       struct btrfs_list_comparer_set *comp_set,
-		       int layout, int full_path, char *raw_prefix)
+		       int layout, int full_path, const char *raw_prefix)
 {
 	struct root_lookup root_lookup;
 	struct root_lookup root_sort;
diff --git a/btrfs-list.h b/btrfs-list.h
index d8ad7328..68927036 100644
--- a/btrfs-list.h
+++ b/btrfs-list.h
@@ -166,7 +166,7 @@ struct btrfs_list_comparer_set *btrfs_list_alloc_comparer_set(void);
 
 int btrfs_list_subvols_print(int fd, struct btrfs_list_filter_set *filter_set,
 		       struct btrfs_list_comparer_set *comp_set,
-		       int is_tab_result, int full_path, char *raw_prefix);
+		       int is_tab_result, int full_path, const char *raw_prefix);
 int btrfs_list_find_updated_files(int fd, u64 root_id, u64 oldest_gen);
 int btrfs_list_get_default_subvolume(int fd, u64 *default_id);
 char *btrfs_list_path_for_root(int fd, u64 root);