um: Run UML in it's own session.

If UML is not run by a shell it can happen that UML
will kill unrelated proceses upon a fatal exit because
it issues a kill(0, ...).
To prevent such oddities we create a new session in main().

Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c
index 749c96da7b99492a4656faf29be190fa9908b330..e1704ff600ff9e677a98a4711d5c8b7b2ff8cf6a 100644 (file)
--- a/arch/um/os-Linux/main.c
+++ b/arch/um/os-Linux/main.c
@@ -123,6 +123,8 @@ int __init main(int argc, char **argv, char **envp)
 
        setup_env_path();
 
+       setsid();
+
        new_argv = malloc((argc + 1) * sizeof(char *));
        if (new_argv == NULL) {
                perror("Mallocing argv");