X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=security%2Fdummy.c;h=b8916883b77f0c0cdc495e979edcf5775818272d;hb=59524a37446e18a672188d86d23c8c76fd488621;hp=48cf30226e16522f0bc5be2803442afe23ea1883;hpb=c135b6592bd63925397e60425e0301f33f06c7a6;p=linux-2.6

diff --git a/security/dummy.c b/security/dummy.c
index 48cf30226e..b8916883b7 100644
--- a/security/dummy.c
+++ b/security/dummy.c
@@ -27,6 +27,8 @@
 #include <linux/hugetlb.h>
 #include <linux/ptrace.h>
 #include <linux/file.h>
+#include <linux/prctl.h>
+#include <linux/securebits.h>
 
 static int dummy_ptrace (struct task_struct *parent, struct task_struct *child)
 {
@@ -607,7 +609,27 @@ static int dummy_task_kill (struct task_struct *p, struct siginfo *info,
 static int dummy_task_prctl (int option, unsigned long arg2, unsigned long arg3,
 			     unsigned long arg4, unsigned long arg5, long *rc_p)
 {
-	return 0;
+	switch (option) {
+	case PR_CAPBSET_READ:
+		*rc_p = (cap_valid(arg2) ? 1 : -EINVAL);
+		break;
+	case PR_GET_KEEPCAPS:
+		*rc_p = issecure(SECURE_KEEP_CAPS);
+		break;
+	case PR_SET_KEEPCAPS:
+		if (arg2 > 1)
+			*rc_p = -EINVAL;
+		else if (arg2)
+			current->securebits |= issecure_mask(SECURE_KEEP_CAPS);
+		else
+			current->securebits &=
+				~issecure_mask(SECURE_KEEP_CAPS);
+		break;
+	default:
+		return 0;
+	}
+
+	return 1;
 }
 
 static void dummy_task_reparent_to_init (struct task_struct *p)
@@ -968,7 +990,7 @@ static int dummy_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
 	return -EOPNOTSUPP;
 }
 
-static int dummy_secctx_to_secid(char *secdata, u32 seclen, u32 *secid)
+static int dummy_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 {
 	return -EOPNOTSUPP;
 }