1 files changed, 82 insertions, 0 deletions
diff --git a/xorg-server/hw/xquartz/mach-startup/launchd_fd.c b/xorg-server/hw/xquartz/mach-startup/launchd_fd.c
new file mode 100644
index 000000000..44a243a58
--- /dev/null
+++ b/xorg-server/hw/xquartz/mach-startup/launchd_fd.c
@@ -0,0 +1,82 @@
+/* Copyright (c) 2008 Apple Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT.  IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
+ * HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name(s) of the above
+ * copyright holders shall not be used in advertising or otherwise to
+ * promote the sale, use or other dealings in this Software without
+ * prior written authorization.
+ */
+
+#include <launch.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "launchd_fd.h"
+
+int launchd_display_fd() {
+    launch_data_t sockets_dict, checkin_request, checkin_response;
+    launch_data_t listening_fd_array, listening_fd;
+
+    /* Get launchd fd */
+    if ((checkin_request = launch_data_new_string(LAUNCH_KEY_CHECKIN)) == NULL) {
+        fprintf(stderr,"launch_data_new_string(\"" LAUNCH_KEY_CHECKIN "\") Unable to create string.\n");
+        return ERROR_FD;
+    }
+    
+    if ((checkin_response = launch_msg(checkin_request)) == NULL) {
+        fprintf(stderr,"launch_msg(\"" LAUNCH_KEY_CHECKIN "\") IPC failure: %s\n",strerror(errno));
+        return ERROR_FD;
+    }
+    
+    if (LAUNCH_DATA_ERRNO == launch_data_get_type(checkin_response)) {
+        // ignore EACCES, which is common if we weren't started by launchd
+        if (launch_data_get_errno(checkin_response) != EACCES)
+            fprintf(stderr,"launchd check-in failed: %s\n", strerror(launch_data_get_errno(checkin_response)));
+        return ERROR_FD;
+    } 
+    
+    sockets_dict = launch_data_dict_lookup(checkin_response, LAUNCH_JOBKEY_SOCKETS);
+    if (NULL == sockets_dict) {
+        fprintf(stderr,"launchd check-in: no sockets found to answer requests on!\n");
+        return ERROR_FD;
+    }
+    
+    if (launch_data_dict_get_count(sockets_dict) > 1) {
+        fprintf(stderr,"launchd check-in: some sockets will be ignored!\n");
+        return ERROR_FD;
+    }
+    
+    listening_fd_array = launch_data_dict_lookup(sockets_dict, ":0");
+    if (NULL == listening_fd_array) {
+        fprintf(stderr,"launchd check-in: No known sockets found to answer requests on!\n");
+        return ERROR_FD;
+    }
+    
+    if (launch_data_array_get_count(listening_fd_array)!=1) {
+        fprintf(stderr,"launchd check-in: Expected 1 socket from launchd, got %u)\n",
+                (unsigned)launch_data_array_get_count(listening_fd_array));
+        return ERROR_FD;
+    }
+    
+    listening_fd=launch_data_array_get_index(listening_fd_array, 0);
+    return launch_data_get_fd(listening_fd);
+}