fix chmod and chown of tty device files

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

1 files changed, 12 insertions, 0 deletions

diff --git a/src/cerberus.c b/src/cerberus.c
index f20e600..e52a48f 100644
--- a/src/cerberus.c
+++ b/src/cerberus.c
@@ -53,6 +53,8 @@ char* passphrase = NULL;
  */
 int main(int argc, char** argv)
 {
+  char* tty_device = ttyname(STDIN_FILENO);
+  
   do_login(argc, argv);
   
   /* Ignore signals */
@@ -63,6 +65,16 @@ int main(int argc, char** argv)
   while ((wait(NULL) == -1) && (errno == EINTR))
     ;
   
+  /* Regain access to the terminal */
+  if (tty_device)
+    {
+      int fd = open(tty_device, O_RDWR | O_NONBLOCK);
+      if (fd)
+	dup2(fd, 0);
+      dup2(fd, 1);
+      dup2(fd, 2);
+    }
+  
   /* Reset terminal ownership and mode */
   chown_tty(0, tty_group, 0);