security: allow Kconfig to set default mmap_min_addr protection

[sfrench/cifs-2.6.git] / security / security.c

diff --git a/security/security.c b/security/security.c
index ca475ca206e4b3afe51ad7bdee1c30fe8398c892..d15e56cbaadeea25c550cfc985de2dbbfbf410fa 100644 (file)
--- a/security/security.c
+++ b/security/security.c
@@ -23,7 +23,9 @@ extern struct security_operations dummy_security_ops;
 extern void security_fixup_ops(struct security_operations *ops);
 
 struct security_operations *security_ops;      /* Initialized to NULL */
-unsigned long mmap_min_addr;           /* 0 means no protection */
+
+/* amount of vm to protect from userspace access */
+unsigned long mmap_min_addr = CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR;
 
 static inline int verify(struct security_operations *ops)
 {
@@ -493,11 +495,11 @@ int security_inode_killpriv(struct dentry *dentry)
        return security_ops->inode_killpriv(dentry);
 }
 
-int security_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err)
+int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 {
        if (unlikely(IS_PRIVATE(inode)))
                return 0;
-       return security_ops->inode_getsecurity(inode, name, buffer, size, err);
+       return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 }
 
 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)