kern: mac: Add MAC resource querying

Introduce a feature where a program with the correct rights may get
information about a MAC object

Signed-off-by: Ian Moffett <ian@osmora.org>

2 files changed, 11 insertions, 0 deletions

diff --git a/src/sys/include/sys/mac.h b/src/sys/include/sys/mac.h
index 4bd46c0..72c0ba2 100644
--- a/src/sys/include/sys/mac.h
+++ b/src/sys/include/sys/mac.h
@@ -61,5 +61,15 @@ ssize_t cross(
     int flags, void *res
 );
 
+/*
+ * Query a resource border
+ *
+ * @id: Border ID
+ * @buf: Buffer to store data
+ * @len: Length of buffer
+ * @flags: Optional flags
+ */
+int query(border_id_t id, void *buf, size_t len, int flags);
+
 #endif  /* _KERNEL */
 #endif  /* !_SYS_MAC_H_ */
diff --git a/src/sys/include/sys/syscall.h b/src/sys/include/sys/syscall.h
index 5ec48c3..215ea22 100644
--- a/src/sys/include/sys/syscall.h
+++ b/src/sys/include/sys/syscall.h
@@ -47,6 +47,7 @@
 #define SYS_write       0x02
 #define SYS_cross       0x03    /* cross a border (mandatory) */
 #define SYS_sigaction   0x04
+#define SYS_query       0x05    /* query a border (mandatory) */
 
 typedef __ssize_t scret_t;
 typedef __ssize_t scarg_t;