string: factorize skip_spaces and export it to be generally available

[safe/jmp/linux-2.6] / security / Kconfig

diff --git a/security/Kconfig b/security/Kconfig
index bb24477..226b955 100644 (file)
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -91,33 +91,41 @@ config SECURITY_PATH
          implement pathname based access controls.
          If you are unsure how to answer this question, answer N.
 
-config SECURITY_FILE_CAPABILITIES
-       bool "File POSIX Capabilities"
-       default n
+config INTEL_TXT
+       bool "Enable Intel(R) Trusted Execution Technology (Intel(R) TXT)"
+       depends on HAVE_INTEL_TXT
        help
-         This enables filesystem capabilities, allowing you to give
-         binaries a subset of root's powers without using setuid 0.
+         This option enables support for booting the kernel with the
+         Trusted Boot (tboot) module. This will utilize
+         Intel(R) Trusted Execution Technology to perform a measured launch
+         of the kernel. If the system does not support Intel(R) TXT, this
+         will have no effect.
+
+         Intel TXT will provide higher assurance of system configuration and
+         initial state as well as data reset protection.  This is used to
+         create a robust initial kernel measurement and verification, which
+         helps to ensure that kernel security mechanisms are functioning
+         correctly. This level of protection requires a root of trust outside
+         of the kernel itself.
+
+         Intel TXT also helps solve real end user concerns about having
+         confidence that their hardware is running the VMM or kernel that
+         it was configured with, especially since they may be responsible for
+         providing such assurances to VMs and services running on it.
+
+         See <http://www.intel.com/technology/security/> for more information
+         about Intel(R) TXT.
+         See <http://tboot.sourceforge.net> for more information about tboot.
+         See Documentation/intel_txt.txt for a description of how to enable
+         Intel TXT support in a kernel boot.
 
-         If in doubt, answer N.
+         If you are unsure as to whether this is required, answer N.
 
-config SECURITY_ROOTPLUG
-       bool "Root Plug Support"
-       depends on USB=y && SECURITY
+config LSM_MMAP_MIN_ADDR
+       int "Low address space for LSM to protect from user allocation"
+       depends on SECURITY && SECURITY_SELINUX
+       default 65536
        help
-         This is a sample LSM module that should only be used as such.
-         It prevents any programs running with egid == 0 if a specific
-         USB device is not present in the system.
-
-         See <http://www.linuxjournal.com/article.php?sid=6279> for
-         more information about this module.
-         
-         If you are unsure how to answer this question, answer N.
-
-config SECURITY_DEFAULT_MMAP_MIN_ADDR
-        int "Low address space to protect from user allocation"
-        depends on SECURITY
-        default 0
-        help
          This is the portion of low virtual memory which should be protected
          from userspace allocation.  Keeping a user from writing to low pages
          can help reduce the impact of kernel NULL pointer bugs.
@@ -125,13 +133,9 @@ config SECURITY_DEFAULT_MMAP_MIN_ADDR
          For most ia64, ppc64 and x86 users with lots of address space
          a value of 65536 is reasonable and should cause no problems.
          On arm and other archs it should not be higher than 32768.
-         Programs which use vm86 functionality would either need additional
-         permissions from either the LSM or the capabilities module or have
-         this protection disabled.
-
-         This value can be changed after boot using the
-         /proc/sys/vm/mmap_min_addr tunable.
-
+         Programs which use vm86 functionality or have some need to map
+         this low address space will need the permission specific to the
+         systems running LSM.
 
 source security/selinux/Kconfig
 source security/smack/Kconfig
@@ -139,5 +143,37 @@ source security/tomoyo/Kconfig
 
 source security/integrity/ima/Kconfig
 
+choice
+       prompt "Default security module"
+       default DEFAULT_SECURITY_SELINUX if SECURITY_SELINUX
+       default DEFAULT_SECURITY_SMACK if SECURITY_SMACK
+       default DEFAULT_SECURITY_TOMOYO if SECURITY_TOMOYO
+       default DEFAULT_SECURITY_DAC
+
+       help
+         Select the security module that will be used by default if the
+         kernel parameter security= is not specified.
+
+       config DEFAULT_SECURITY_SELINUX
+               bool "SELinux" if SECURITY_SELINUX=y
+
+       config DEFAULT_SECURITY_SMACK
+               bool "Simplified Mandatory Access Control" if SECURITY_SMACK=y
+
+       config DEFAULT_SECURITY_TOMOYO
+               bool "TOMOYO" if SECURITY_TOMOYO=y
+
+       config DEFAULT_SECURITY_DAC
+               bool "Unix Discretionary Access Controls"
+
+endchoice
+
+config DEFAULT_SECURITY
+       string
+       default "selinux" if DEFAULT_SECURITY_SELINUX
+       default "smack" if DEFAULT_SECURITY_SMACK
+       default "tomoyo" if DEFAULT_SECURITY_TOMOYO
+       default "" if DEFAULT_SECURITY_DAC
+
 endmenu