anchao commented on code in PR #11177:
URL: https://github.com/apache/nuttx/pull/11177#discussion_r1393013541
##########
sched/task/task_spawnparms.c:
##########
@@ -289,3 +291,70 @@ int spawn_file_actions(FAR struct tcb_s *tcb,
return ret;
}
+
+/****************************************************************************
+ * Name: spawn_file_is_duplicateable
+ *
+ * Description:
+ * Check the input file descriptor is duplicateable from spawn actions
+ *
+ * Input Parameters:
+ *
+ * actions - The spawn file actions
+ * fd - file descriptor
+ *
+ * Returned Value:
+ * Return 1 if file descriptor is duplicate able
+ * Return 0 if file descriptor in action list but unable to duplicate
+ * Return -1 if file descriptor without in actions list
+ *
+ ****************************************************************************/
+
+int
+spawn_file_is_duplicateable(FAR const posix_spawn_file_actions_t *actions,
+ int fd)
+{
+ FAR struct spawn_general_file_action_s *entry;
+ FAR struct spawn_close_file_action_s *close;
+ FAR struct spawn_open_file_action_s *open;
+ FAR struct spawn_dup2_file_action_s *dup2;
+
+ /* Execute each file action */
+
+ for (entry = (FAR struct spawn_general_file_action_s *)actions;
+ entry != NULL;
+ entry = entry->flink)
+ {
+ switch (entry->action)
+ {
+ case SPAWN_FILE_ACTION_CLOSE:
+ close = (FAR void *)entry;
Review Comment:
Done
##########
sched/task/task_spawnparms.c:
##########
@@ -289,3 +291,70 @@ int spawn_file_actions(FAR struct tcb_s *tcb,
return ret;
}
+
+/****************************************************************************
+ * Name: spawn_file_is_duplicateable
+ *
+ * Description:
+ * Check the input file descriptor is duplicateable from spawn actions
+ *
+ * Input Parameters:
+ *
+ * actions - The spawn file actions
+ * fd - file descriptor
+ *
+ * Returned Value:
+ * Return 1 if file descriptor is duplicate able
+ * Return 0 if file descriptor in action list but unable to duplicate
+ * Return -1 if file descriptor without in actions list
+ *
+ ****************************************************************************/
+
+int
+spawn_file_is_duplicateable(FAR const posix_spawn_file_actions_t *actions,
+ int fd)
+{
+ FAR struct spawn_general_file_action_s *entry;
+ FAR struct spawn_close_file_action_s *close;
+ FAR struct spawn_open_file_action_s *open;
+ FAR struct spawn_dup2_file_action_s *dup2;
+
+ /* Execute each file action */
+
+ for (entry = (FAR struct spawn_general_file_action_s *)actions;
+ entry != NULL;
+ entry = entry->flink)
+ {
+ switch (entry->action)
+ {
+ case SPAWN_FILE_ACTION_CLOSE:
+ close = (FAR void *)entry;
+ if (close->fd == fd)
+ {
+ return 0;
+ }
+ break;
+
+ case SPAWN_FILE_ACTION_DUP2:
+ dup2 = (FAR void *)entry;
Review Comment:
Done
##########
sched/task/task_spawnparms.c:
##########
@@ -289,3 +291,70 @@ int spawn_file_actions(FAR struct tcb_s *tcb,
return ret;
}
+
+/****************************************************************************
+ * Name: spawn_file_is_duplicateable
+ *
+ * Description:
+ * Check the input file descriptor is duplicateable from spawn actions
+ *
+ * Input Parameters:
+ *
+ * actions - The spawn file actions
+ * fd - file descriptor
+ *
+ * Returned Value:
+ * Return 1 if file descriptor is duplicate able
+ * Return 0 if file descriptor in action list but unable to duplicate
+ * Return -1 if file descriptor without in actions list
+ *
+ ****************************************************************************/
+
+int
+spawn_file_is_duplicateable(FAR const posix_spawn_file_actions_t *actions,
+ int fd)
+{
+ FAR struct spawn_general_file_action_s *entry;
+ FAR struct spawn_close_file_action_s *close;
+ FAR struct spawn_open_file_action_s *open;
+ FAR struct spawn_dup2_file_action_s *dup2;
+
+ /* Execute each file action */
+
+ for (entry = (FAR struct spawn_general_file_action_s *)actions;
+ entry != NULL;
+ entry = entry->flink)
+ {
+ switch (entry->action)
+ {
+ case SPAWN_FILE_ACTION_CLOSE:
+ close = (FAR void *)entry;
+ if (close->fd == fd)
+ {
+ return 0;
+ }
+ break;
+
+ case SPAWN_FILE_ACTION_DUP2:
+ dup2 = (FAR void *)entry;
+ if (dup2->fd1 == fd)
+ {
+ return 1;
+ }
+ break;
+
+ case SPAWN_FILE_ACTION_OPEN:
+ open = (FAR void *)entry;
Review Comment:
Done
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