[PATCH 2/2] Xinit: close stdin to avoid leak of file descriptior to the Xorg session.

[Matěj Cepl]

Signed-off-by: Matěj Cepl <mcepl at redhat.com>
---
 xinit.c |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/xinit.c b/xinit.c
index 42ff008..7f56aab 100644
--- a/xinit.c
+++ b/xinit.c
@@ -91,6 +91,8 @@ char xserverrcbuf[256];
 
 #define TRUE 1
 #define FALSE 0
+#define OK_EXIT 0
+#define ERR_EXIT 1
 
 static char *default_server = "X";
 static char *default_display = ":0";        /* choose most efficient */
@@ -561,6 +563,7 @@ startClient(char *client[])
 {
     clientpid = fork();
     if (clientpid == 0) {
+         int fd;
         set_environment();
         setWindowPath();
 
@@ -568,7 +571,16 @@ startClient(char *client[])
             Error("cannot change uid");
             _exit(EXIT_FAILURE);
         }
-        setpgid(0, getpid());
+         fd = open ("/dev/null", O_RDONLY);
+
+         if (fd < 0) {
+             Error("cannot open /dev/null: %s\n", strerror(errno));
+             _exit(ERR_EXIT);
+         }
+         close (STDIN_FILENO);
+         dup2 (fd, STDIN_FILENO);
+         close (fd);
+         setsid();
         Execute(client);
         Error("Unable to run program \"%s\"", client[0]);
 
-- 
1.7.6