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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-30 09:19:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-30 09:19:09 -0700
commit12195302ee6c32cf3c0fa947e17303ce583d41c9 (patch)
tree9060c84ebf1bc12280182bd7ddb0650316daf07e
parent922c010cf236357dea020f483c18373d6a494ffb (diff)
parent2623c4fbe2ad1341ff2d1e12410d0afdae2490ca (diff)
Merge branch 'fixes-v5.1-a' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security layer fixes from James Morris: "Yama and LSM config fixes" * 'fixes-v5.1-a' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: LSM: Revive CONFIG_DEFAULT_SECURITY_* for "make oldconfig" Yama: mark local symbols as static
-rw-r--r--security/Kconfig38
-rw-r--r--security/yama/yama_lsm.c8
2 files changed, 42 insertions, 4 deletions
diff --git a/security/Kconfig b/security/Kconfig
index 1d6463fb1450..353cfef71d4e 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -239,8 +239,46 @@ source "security/safesetid/Kconfig"
source "security/integrity/Kconfig"
+choice
+ prompt "First legacy 'major LSM' to be initialized"
+ default DEFAULT_SECURITY_SELINUX if SECURITY_SELINUX
+ default DEFAULT_SECURITY_SMACK if SECURITY_SMACK
+ default DEFAULT_SECURITY_TOMOYO if SECURITY_TOMOYO
+ default DEFAULT_SECURITY_APPARMOR if SECURITY_APPARMOR
+ default DEFAULT_SECURITY_DAC
+
+ help
+ This choice is there only for converting CONFIG_DEFAULT_SECURITY
+ in old kernel configs to CONFIG_LSM in new kernel configs. Don't
+ change this choice unless you are creating a fresh kernel config,
+ for this choice will be ignored after CONFIG_LSM has been set.
+
+ Selects the legacy "major security module" that will be
+ initialized first. Overridden by non-default CONFIG_LSM.
+
+ 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_APPARMOR
+ bool "AppArmor" if SECURITY_APPARMOR=y
+
+ config DEFAULT_SECURITY_DAC
+ bool "Unix Discretionary Access Controls"
+
+endchoice
+
config LSM
string "Ordered list of enabled LSMs"
+ default "yama,loadpin,safesetid,integrity,smack,selinux,tomoyo,apparmor" if DEFAULT_SECURITY_SMACK
+ default "yama,loadpin,safesetid,integrity,apparmor,selinux,smack,tomoyo" if DEFAULT_SECURITY_APPARMOR
+ default "yama,loadpin,safesetid,integrity,tomoyo" if DEFAULT_SECURITY_TOMOYO
+ default "yama,loadpin,safesetid,integrity" if DEFAULT_SECURITY_DAC
default "yama,loadpin,safesetid,integrity,selinux,smack,tomoyo,apparmor"
help
A comma-separated list of LSMs, in initialization order.
diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
index 57cc60722dd3..efac68556b45 100644
--- a/security/yama/yama_lsm.c
+++ b/security/yama/yama_lsm.c
@@ -206,7 +206,7 @@ static void yama_ptracer_del(struct task_struct *tracer,
* yama_task_free - check for task_pid to remove from exception list
* @task: task being removed
*/
-void yama_task_free(struct task_struct *task)
+static void yama_task_free(struct task_struct *task)
{
yama_ptracer_del(task, task);
}
@@ -222,7 +222,7 @@ void yama_task_free(struct task_struct *task)
* Return 0 on success, -ve on error. -ENOSYS is returned when Yama
* does not handle the given option.
*/
-int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
+static int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5)
{
int rc = -ENOSYS;
@@ -401,7 +401,7 @@ static int yama_ptrace_access_check(struct task_struct *child,
*
* Returns 0 if following the ptrace is allowed, -ve on error.
*/
-int yama_ptrace_traceme(struct task_struct *parent)
+static int yama_ptrace_traceme(struct task_struct *parent)
{
int rc = 0;
@@ -452,7 +452,7 @@ static int yama_dointvec_minmax(struct ctl_table *table, int write,
static int zero;
static int max_scope = YAMA_SCOPE_NO_ATTACH;
-struct ctl_path yama_sysctl_path[] = {
+static struct ctl_path yama_sysctl_path[] = {
{ .procname = "kernel", },
{ .procname = "yama", },
{ }