Kerenel: Cleanup halt checking code

1 files changed, 42 insertions, 0 deletions

diff --git a/kernel/sched/scheduler.c b/kernel/sched/scheduler.c
index 1aae1ce..614f621 100644
--- a/kernel/sched/scheduler.c
+++ b/kernel/sched/scheduler.c
@@ -324,6 +324,48 @@ int fork(void) {
   return new_task->pid;
 }
 
+int isset_fdhalt(process_t *p) {
+  if(NULL == p) {
+    p = get_current_task();
+  }
+  int blocked = 0;
+  struct list *read_list = &p->read_list;
+  struct list *write_list = &p->write_list;
+  struct list *disconnect_list = &p->disconnect_list;
+
+  for (int i = 0;; i++) {
+    vfs_inode_t *inode;
+    if (!list_get(read_list, i, (void **)&inode)) {
+      break;
+    }
+    if (inode->has_data) {
+      return 0;
+    }
+    blocked = 1;
+  }
+  for (int i = 0;; i++) {
+    vfs_inode_t *inode;
+    if (!list_get(write_list, i, (void **)&inode)) {
+      break;
+    }
+    if (inode->can_write) {
+      return 0;
+    }
+    blocked = 1;
+  }
+  for (int i = 0;; i++) {
+    vfs_inode_t *inode;
+    if (!list_get(disconnect_list, i, (void **)&inode)) {
+      break;
+    }
+    if (inode->is_open) {
+      return 0;
+    }
+    blocked = 1;
+  }
+  return blocked;
+}
+
 int is_halted(process_t *process) {
   for (int i = 0; i < 2; i++) {
     if (process->halts[i]) {