[PATCH 12/75] Add DEVPTS_MULTIPLE_INSTANCES config token

Alan Cox
2009-01-02T13:41:39Z

From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Alan Cox <alan@redhat.com>
---

drivers/char/Kconfig | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index c602b54..c52a167 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -443,6 +443,17 @@ config UNIX98_PTYS
All modern Linux systems use the Unix98 ptys. Say Y unless
you're on an embedded system and want to conserve memory.

+config DEVPTS_MULTIPLE_INSTANCES
+ bool "Support multiple instances of devpts"
+ depends on UNIX98_PTYS
+ default n
+ ---help---
+ Enable support for multiple instances of devpts filesystem.
+ If you want to have isolated PTY namespaces (eg: in containers),
+ say Y here. Otherwise, say N. If enabled, each mount of devpts
+ filesystem with the '-o newinstance' option will create an
+ independent PTY namespace.
+
config LEGACY_PTYS
bool "Legacy (BSD) PTY support"
default y