Changeset 83b1d61 in mainline for fb/main.c

Timestamp:

2006-06-02T13:30:37Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

bb51e9a8

Parents:

bd929cfb

Message:

Added mmap, munmap calls.
Added possibility to access framebuffer using shared memory.

File:

• fb/main.c (modified) (1 diff)

fb/main.c

@@ -31 +31 @@
 #include <sysinfo.h>
 #include <async.h>
+#include <as.h>
+#include <align.h>
+#include <errno.h>
 
 #include "fb.h"
 #include "sysio.h"
 #include "ega.h"
+#include "main.h"
+
+void receive_comm_area(ipc_callid_t callid, ipc_call_t *call, void **area,
+                       size_t maxsize)
+{
+        void *dest;
+
+        if (*area) {
+                ipc_answer_fast(callid, ELIMIT, 0, 0);
+                return;
+        }
+        if (IPC_GET_ARG2(*call) > ALIGN_UP(maxsize, PAGE_SIZE)) {
+                ipc_answer_fast(callid, EINVAL, 0, 0);
+                return;
+        }
+        
+        dest = as_get_mappable_page(maxsize);
+        if (ipc_answer_fast(callid, 0, (sysarg_t)dest, 0) == 0)
+                *area = dest;
+}
 
 int main(int argc, char *argv[])