Changeset 3b3fcf36 in mainline for kernel

Timestamp:

2018-11-20T10:53:13Z (7 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

a615be0

Parents:

8be3230

git-author:

Jiri Svoboda <jiri@…> (2018-11-19 18:49:18)

git-committer:

Jiri Svoboda <jiri@…> (2018-11-20 10:53:13)

Message:

IPC share-in test using text and data segment.

Location:

kernel/generic

Files:

• include/mm/as.h (modified) (1 diff)
• src/mm/as.c (modified) (1 diff)
• src/syscall/syscall.c (modified) (1 diff)

kernel/generic/include/mm/as.h

@@ -322 +322 @@
 extern sys_errno_t sys_as_area_resize(uintptr_t, size_t, unsigned int);
 extern sys_errno_t sys_as_area_change_flags(uintptr_t, unsigned int);
+extern sys_errno_t sys_as_area_get_info(uintptr_t, as_area_info_t *);
 extern sys_errno_t sys_as_area_destroy(uintptr_t);
 

kernel/generic/src/mm/as.c

@@ -2229 +2229 @@
 }
 
+sys_errno_t sys_as_area_get_info(uintptr_t address, as_area_info_t *dest)
+{
+        as_area_t *area;
+
+        mutex_lock(&AS->lock);
+        area = find_area_and_lock(AS, address);
+        if (area == NULL) {
+                mutex_unlock(&AS->lock);
+                return ENOENT;
+        }
+
+        dest->start_addr = area->base;
+        dest->size = P2SZ(area->pages);
+        dest->flags = area->flags;
+
+        mutex_unlock(&area->lock);
+        mutex_unlock(&AS->lock);
+        return EOK;
+}
+
 sys_errno_t sys_as_area_destroy(uintptr_t address)
 {

kernel/generic/src/syscall/syscall.c

@@ -146 +146 @@
         [SYS_AS_AREA_RESIZE] = (syshandler_t) sys_as_area_resize,
         [SYS_AS_AREA_CHANGE_FLAGS] = (syshandler_t) sys_as_area_change_flags,
+        [SYS_AS_AREA_GET_INFO] = (syshandler_t) sys_as_area_get_info,
         [SYS_AS_AREA_DESTROY] = (syshandler_t) sys_as_area_destroy,