add basic scheduler logic. rename init rootdir indexes

1 files changed, 43 insertions, 0 deletions

diff --git a/sys/syscall_untyped.c b/sys/syscall_untyped.c
index 8fe592d..1ec21c7 100644
--- a/sys/syscall_untyped.c
+++ b/sys/syscall_untyped.c
@@ -2,6 +2,7 @@
 #include "hal/memory.h"
 #include "jove.h"
 #include "lib/printf.h"
+#include "proc/process.h"
 #include "syscall.h"
 
 static int
@@ -73,6 +74,27 @@ s_syscall_untyped_merge(
     return sysret;
 }
 
+int
+s_syscall_untyped_retype_pcb(jove_owned_obj_t *untyped_obj,
+        lockstack_t *lockstack,
+        jove_owned_obj_t *rootdir,
+        struct syscall_header *header)
+{
+    jove_untyped_t *untyped = obj_deref(untyped_obj);
+    CHECK_TOOSMALL(PCB_MINSIZE, untyped->limit, "Untyped object too small for PCB");
+
+    jove_perm_obj_t objdir_obj = link_try_traverse_objdir(
+        rootdir, lockstack, header->pathlen - 1, header->path);
+    if(errno) {
+        klogf("Unable to retrieve parent objdir at %P\n",
+                header->path, header->pathlen - 1);
+        return -errno;
+    }
+    CHECK_OBJPERM(objdir_obj, JOVE_PERM_ALL, "New PCB needs full access to it's root objdir!");
+
+    obj_settype(untyped_obj, JOVE_OBJ_PCB);
+    return pcb_new(untyped_obj, untyped->limit, objdir_obj.obj);
+}
 
 int _syscall_handle_untyped(syscall_context_t *ctx)
 {
@@ -99,6 +121,27 @@ int _syscall_handle_untyped(syscall_context_t *ctx)
                         &ctx->lockstack, ctx->objdir, ctx->target.obj, ctx->bytes_left, ctx->payload);
             return -EPERM;
 
+        case SYSCALL_UNTYPED_RETYPE_OBJDIR:
+            if(ctx->target.permissions & SYSCALL_PERM_UNTYPED_RETYPE)
+                return objdir_new(ctx->target.obj);
+            return -EPERM;
+
+        case SYSCALL_UNTYPED_RETYPE_PAGEDIR:
+            if(ctx->target.permissions & SYSCALL_PERM_UNTYPED_RETYPE)
+                return pagedir_new(ctx->target.obj);
+            return -EPERM;
+
+        case SYSCALL_UNTYPED_RETYPE_SHMEMORY:
+            if(ctx->target.permissions & SYSCALL_PERM_UNTYPED_RETYPE)
+                return shmem_new(ctx->target.obj);
+            return -EPERM;
+
+        case SYSCALL_UNTYPED_RETYPE_PCB:
+            if(ctx->target.permissions & SYSCALL_PERM_UNTYPED_RETYPE)
+                return s_syscall_untyped_retype_pcb(
+                        ctx->target.obj, &ctx->lockstack, ctx->objdir, ctx->header);
+            return -EPERM;
+
         default:
             return -EBADCALL;
     }