Kernel/LibC: Add randomfill() syscall.

This syscall aims to fill the given buffer with cryptographically secure
random data. If the syscall returns and does not cause a page fault it
will **always** have filled the buffer with random data and never gives
back any error value.

2 files changed, 4 insertions, 0 deletions

diff --git a/userland/libc/include/sys/random.h b/userland/libc/include/sys/random.h
new file mode 100644
index 0000000..0be3dd8
--- /dev/null
+++ b/userland/libc/include/sys/random.h
@@ -0,0 +1,3 @@
+#include <stdint.h>
+
+void randomfill(void *buffer, uint32_t size);
diff --git a/userland/libc/include/syscall.h b/userland/libc/include/syscall.h
index c09eafb..7a3b50d 100644
--- a/userland/libc/include/syscall.h
+++ b/userland/libc/include/syscall.h
@@ -39,6 +39,7 @@
 #define SYS_CHDIR 31
 #define SYS_GETCWD 32
 #define SYS_ISATTY 33
+#define SYS_RANDOMFILL 34
 
 int syscall(uint32_t eax, uint32_t ebx, uint32_t ecx, uint32_t edx,
             uint32_t esi, uint32_t edi);