stat-util: add inode_type_to_string() helper for showing mode_t inode type as string

src/basic/stat-util.c

@@ -471,3 +471,26 @@ int inode_compare_func(const struct stat *a, const struct stat *b) {
 }
 
 DEFINE_HASH_OPS_WITH_KEY_DESTRUCTOR(inode_hash_ops, struct stat, inode_hash_func, inode_compare_func, free);
+
+const char* inode_type_to_string(mode_t m) {
+
+        /* Returns a short string for the inode type. We use the same name as the underlying macros for each
+         * inode type. */
+
+        switch (m & S_IFMT) {
+        case S_IFREG:
+                return "reg";
+        case S_IFDIR:
+                return "dir";
+        case S_IFCHR:
+                return "chr";
+        case S_IFBLK:
+                return "blk";
+        case S_IFIFO:
+                return "fifo";
+        case S_IFSOCK:
+                return "sock";
+        }
+
+        return NULL;
+}

src/basic/stat-util.h

@@ -101,3 +101,5 @@ int statx_fallback(int dfd, const char *path, int flags, unsigned mask, struct s
 void inode_hash_func(const struct stat *q, struct siphash *state);
 int inode_compare_func(const struct stat *a, const struct stat *b);
 extern const struct hash_ops inode_hash_ops;
+
+const char* inode_type_to_string(mode_t m);