Changeset a481d81 in mainline

Timestamp:

2016-08-30T18:10:13Z (8 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

dd5f703

Parents:

101516d

Message:

Implement simple VFS pager for testing purposes

File:

• uspace/srv/vfs/vfs.c (modified) (2 diffs)

uspace/srv/vfs/vfs.c

@@ -37 +37 @@
 
 #include <vfs/vfs.h>
+#include <stdlib.h>
 #include <ipc/services.h>
+#include <abi/ipc/methods.h>
+#include <libarch/config.h>
 #include <ns.h>
 #include <async.h>
@@ -53 +56 @@
 static void vfs_pager(ipc_callid_t iid, ipc_call_t *icall, void *arg)
 {
-        async_answer_0(iid, ENOTSUP);
+        async_answer_0(iid, EOK);
+
+        char *buf = memalign(PAGE_SIZE, 1);
+        const char hello[] = "Hello world!";
+
+        memcpy(buf, hello, sizeof(hello));
+
+        while (true) {
+                ipc_call_t call;
+                ipc_callid_t callid = async_get_call(&call);
+                
+                if (!IPC_GET_IMETHOD(call))
+                        break;
+                
+                switch (IPC_GET_IMETHOD(call)) {
+                case IPC_M_PAGE_IN:
+                        if (buf)
+                                async_answer_1(callid, EOK, (sysarg_t) buf);
+                        else
+                                async_answer_0(callid, ENOMEM);
+                        break;
+                        
+                default:
+                        async_answer_0(callid, ENOTSUP);
+                        break;
+                }
+        }
 }