selinux: introduce security_context_str_to_sid
There seems to be a little confusion as to whether the scontext_len
parameter of security_context_to_sid() includes the nul-byte or
not. Reading security_context_to_sid_core(), it seems that the
expectation is that it does not (both the string copying and the test
for scontext_len being zero hint at that).
Introduce the helper security_context_str_to_sid() to do the strlen()
call and fix all callers.
Signed-off-by: Rasmus Villemoes <[email protected]>
Acked-by: Stephen Smalley <[email protected]>
Signed-off-by: Paul Moore <[email protected]>
diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h
index 6a681d2..223e9fd 100644
--- a/security/selinux/include/security.h
+++ b/security/selinux/include/security.h
@@ -166,6 +166,8 @@
int security_context_to_sid(const char *scontext, u32 scontext_len,
u32 *out_sid, gfp_t gfp);
+int security_context_str_to_sid(const char *scontext, u32 *out_sid, gfp_t gfp);
+
int security_context_to_sid_default(const char *scontext, u32 scontext_len,
u32 *out_sid, u32 def_sid, gfp_t gfp_flags);
