since: 2.18


g_mount_guess_content_type_sync (
  GMount* mount,
  gboolean force_rescan,
  GCancellable* cancellable,
  GError** error


Tries to guess the type of content stored on mount. Returns one or more textual identifiers of well-known content types (typically prefixed with “x-content/”), e.g. x-content/image-dcf for camera memory cards. See the shared-mime-info specification for more on x-content types.

This is a synchronous operation and as such may block doing IO; see g_mount_guess_content_type() for the asynchronous version.

Available since: 2.18



Type: gboolean

Whether to force a rescan of the content. Otherwise a cached result will be used if available.


Type: GCancellable

Optional GCancellable object, NULL to ignore.

The argument can be NULL.
The data is owned by the caller of the function.

Type: GError **

The return location for a recoverable error.

The argument can be NULL.
If the return location is not NULL, then you must initialize it to a NULL GError*.
The argument will left initialized to NULL by the method if there are no errors.
In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.

Return value

Type: An array of utf8

A NULL-terminated array of content types or NULL on error. Caller should free this array with g_strfreev() when done with it.

The array is NULL-terminated.
The caller of the method takes ownership of the data, and is responsible for freeing it.
Each element is a NUL terminated UTF-8 string.