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Eric W. Biederman 98a27ba485 tty: introduce no_tty and use it in selinux ... While researching the tty layer pid leaks I found a weird case in selinux when we drop a controlling tty because of inadequate permissions we don't do the normal hangup processing. Which is a problem if it happens the session leader has exec'd something that can no longer access the tty. We already have code in the kernel to handle this case in the form of the TIOCNOTTY ioctl. So this patch factors out a helper function that is the essence of that ioctl and calls it from the selinux code. This removes the inconsistency in handling dropping of a controlling tty and who knows it might even make some part of user space happy because it received a SIGHUP it was expecting. In addition since this removes the last user of proc_set_tty outside of tty_io.c proc_set_tty is made static and removed from tty.h Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: James Morris <jmorris@namei.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		18 years ago
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keys	[AF_RXRPC]: Key facility changes for AF_RXRPC	18 years ago
selinux	tty: introduce no_tty and use it in selinux	18 years ago
Kconfig	…
Makefile	…
capability.c	…
commoncap.c	…
dummy.c	[PATCH] sanitize security_getprocattr() API	18 years ago
inode.c	remove "struct subsystem" as it is no longer needed	18 years ago
root_plug.c	…
security.c	…