btrfs-progs: move test_isdir() to utils.c

Since test_isdir() is a utility function, it's better to
move it to utils.c. In addition, "const char *" is
more appropriate type as its "path" argument because
this argument is not changed in this function.

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Cc: David Sterba <dsterba@suse.cz>
Cc: Mike Fleetwood <mike.fleetwood@googlemail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>

3 files changed, 20 insertions, 19 deletions

diff --git a/cmds-subvolume.c b/cmds-subvolume.c
index 29ded126..0d4a52ea 100644
--- a/cmds-subvolume.c
+++ b/cmds-subvolume.c
@@ -41,25 +41,6 @@ static const char * const subvolume_cmd_group_usage[] = {
 	NULL
 };
 
-/*
- * test if path is a directory
- * this function return
- * 0-> path exists but it is not a directory
- * 1-> path exists and it is  a directory
- * -1 -> path is unaccessible
- */
-static int test_isdir(char *path)
-{
-	struct stat	st;
-	int		res;
-
-	res = stat(path, &st);
-	if(res < 0 )
-		return -1;
-
-	return S_ISDIR(st.st_mode);
-}
-
 static const char * const cmd_subvol_create_usage[] = {
 	"btrfs subvolume create [-i <qgroupid>] [<dest>/]<name>",
 	"Create a subvolume",
diff --git a/utils.c b/utils.c
index d2397e85..6c093666 100644
--- a/utils.c
+++ b/utils.c
@@ -2417,3 +2417,22 @@ int test_issubvolname(const char *name)
 	return name[0] != '\0' && !strchr(name, '/') &&
 		strcmp(name, ".") && strcmp(name, "..");
 }
+
+/*
+ * test if path is a directory
+ * this function return
+ * 0-> path exists but it is not a directory
+ * 1-> path exists and it is a directory
+ * -1 -> path is unaccessible
+ */
+int test_isdir(const char *path)
+{
+	struct stat st;
+	int ret;
+
+	ret = stat(path, &st);
+	if(ret < 0 )
+		return -1;
+
+	return S_ISDIR(st.st_mode);
+}
diff --git a/utils.h b/utils.h
index e3d80c10..fd25126d 100644
--- a/utils.h
+++ b/utils.h
@@ -117,6 +117,7 @@ int test_uuid_unique(char *fs_uuid);
 
 int test_minimum_size(const char *file, u32 leafsize);
 int test_issubvolname(const char *name);
+int test_isdir(const char *path);
 
 /*
  * Btrfs minimum size calculation is complicated, it should include at least: