Changeset 7c23af9 in mainline for generic/src/ipc/sysipc.c

Timestamp:

2006-05-14T17:16:52Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

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

Children:

14b502e2

Parents:

68965ec5

Message:

Added support to IPC for simple page sharing.

File:

• generic/src/ipc/sysipc.c (modified) (9 diffs)

generic/src/ipc/sysipc.c

@@ -41 +41 @@
 #include <syscall/copy.h>
 #include <security/cap.h>
+#include <mm/as.h>
 
 #define GET_CHECK_PHONE(phone,phoneid,err) { \
@@ -83 +84 @@
         if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO)
                 return 1;
+        if (IPC_GET_METHOD(call->data) == IPC_M_AS_SEND)
+                return 1;
         return 0;
 }
 
 /** Interpret process answer as control information */
-static inline void answer_preprocess(call_t *answer, ipc_data_t *olddata)
+static inline int answer_preprocess(call_t *answer, ipc_data_t *olddata)
 {
         int phoneid;
@@ -106 +109 @@
 
         if (!olddata)
-                return;
+                return 0;
 
         if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) {
@@ -125 +128 @@
                                           &TASK->answerbox);
                 }
-        }
+        } else if (IPC_GET_METHOD(*olddata) == IPC_M_AS_SEND) {
+                if (!IPC_GET_RETVAL(answer->data)) { /* Accepted, handle As_area receival */
+                        return as_area_steal(answer->sender,
+                                             IPC_GET_ARG2(*olddata),IPC_GET_ARG3(*olddata),
+                                             IPC_GET_ARG1(answer->data));
+                }
+        }
+        return 0;
 }
 
@@ -135 +145 @@
 {
         int newphid;
+        size_t size;
 
         switch (IPC_GET_METHOD(call->data)) {
@@ -146 +157 @@
                 call->private = newphid;
                 break;
+        case IPC_M_AS_SEND:
+                size = as_get_size(IPC_GET_ARG2(call->data));
+                if (!size) {
+                        return EPERM;
+                }
+                IPC_SET_ARG3(call->data, size);
+                break;
         default:
                 break;
@@ -377 +395 @@
         ipc_data_t saved_data;
         int saveddata = 0;
+        int rc;
 
         call = get_call(callid);
@@ -390 +409 @@
         IPC_SET_ARG1(call->data, arg1);
         IPC_SET_ARG2(call->data, arg2);
-        answer_preprocess(call, saveddata ? &saved_data : NULL);
+        rc = answer_preprocess(call, saveddata ? &saved_data : NULL);
 
         ipc_answer(&TASK->answerbox, call);
-        return 0;
+        return rc;
 }
 
@@ -417 +436 @@
                 return rc;
 
-        answer_preprocess(call, saveddata ? &saved_data : NULL);
+        rc = answer_preprocess(call, saveddata ? &saved_data : NULL);
         
         ipc_answer(&TASK->answerbox, call);
 
-        return 0;
+        return rc;
 }