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-rw-r--r--src/AFC.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/AFC.c b/src/AFC.c
index dc8fe20..af07b56 100644
--- a/src/AFC.c
+++ b/src/AFC.c
@@ -917,6 +917,63 @@ iphone_error_t iphone_afc_close_file(iphone_afc_client_t client, iphone_afc_file
return IPHONE_E_SUCCESS;
}
+/** Locks or unlocks a file on the phone.
+ *
+ * makes use of flock, see
+ * http://developer.apple.com/documentation/Darwin/Reference/ManPages/man2/flock.2.html
+ *
+ * operation (same as in sys/file.h on linux):
+ *
+ * LOCK_SH 1 // shared lock
+ * LOCK_EX 2 // exclusive lock
+ * LOCK_NB 4 // don't block when locking
+ * LOCK_UN 8 // unlock
+ *
+ * @param client The client to close the file with.
+ * @param file A pointer to an AFCFile struct containing the file handle of the
+ * file to close.
+ * @operation the lock or unlock operation to perform.
+ */
+iphone_error_t iphone_afc_lock_file(iphone_afc_client_t client, iphone_afc_file_t file, int operation)
+{
+ if (!client || !file)
+ return IPHONE_E_INVALID_ARG;
+ char *buffer = malloc(16);
+ uint32 zero = 0;
+ int bytes = 0;
+ uint64_t op = operation;
+
+ afc_lock(client);
+
+ log_debug_msg("afc_lock_file: File handle %i\n", file->filehandle);
+
+ // Send command
+ memcpy(buffer, &file->filehandle, sizeof(uint32));
+ memcpy(buffer + sizeof(uint32), &zero, sizeof(zero));
+ memcpy(buffer + 8, &op, 8);
+
+ client->afc_packet->operation = AFC_FILE_LOCK;
+ client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+ bytes = dispatch_AFC_packet(client, buffer, 15);
+ free(buffer);
+ buffer = NULL;
+
+ if (bytes <= 0) {
+ afc_unlock(client);
+ log_debug_msg("fuck\n");
+ return IPHONE_E_UNKNOWN_ERROR;
+ }
+ // Receive the response
+ bytes = receive_AFC_data(client, &buffer);
+ log_debug_msg("%s: receiving response (%d bytes)\n", __func__, bytes);
+ if (buffer) {
+ log_debug_buffer(buffer, bytes);
+ free(buffer);
+ }
+ afc_unlock(client);
+ return IPHONE_E_SUCCESS;
+}
+
/** Seeks to a given position of a pre-opened file on the phone.
*
* @param client The client to use to seek to the position.