add login libexec

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 62 insertions, 0 deletions

diff --git a/src/got-diminished-login.c b/src/got-diminished-login.c
new file mode 100644
index 0000000..52eecd5
--- /dev/null
+++ b/src/got-diminished-login.c
@@ -0,0 +1,62 @@
+/**
+ * got-diminished – Extension for gates-of-tartaros to minimise memory usage after loggin in
+ * 
+ * Copyright © 2013  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+
+
+int main(int argc, char** argv)
+{
+  pid_t pid = vfork();
+  if (pid == -1)
+    {
+      perror("fork");
+      return 1;
+    }
+  
+  if (pid)
+    {
+      waitpid(pid, &pid, 0);
+      {
+	int n = 0, i;
+	char* stty = *(argv + 2);
+	char* stty_cmd;
+	
+	while (*(stty + n++))
+	  ;
+	
+	stty_cmd = malloc(5 + n);
+	for (i = 0; i < 5; i++)
+	  *(stty_cmd + i) = *("stty " + i);
+	stty_cmd += 5;
+	for (i = 0; i < n; i++)
+	  *(stty_cmd + i) = *(stty + i);
+	stty_cmd -= 5;
+	
+	system(stty_cmd);
+	free(stty_cmd);
+      }
+    }
+  else
+    execlp("setsid", "setsid", "-c", "login", "--", *(argv + 1), NULL);
+  
+  return 0;
+}
+