boot cpio fs映射到用户态

2024-04-07 15:04:30 +00:00
parent a001a26bfe
commit b30ec9575d
17 changed files with 388 additions and 16 deletions
--- a/mkrtos_user/lib/libc_backend/src/fd_map.c
+++ b/mkrtos_user/lib/libc_backend/src/fd_map.c
@@ -86,6 +86,11 @@ int fd_map_get(int fd, fd_map_entry_t *new_entry)
    int row_inx = fd / CONFIG_FD_MAP_ROW_CN;
    int inx = fd % CONFIG_FD_MAP_ROW_CN;

+    if (fd_map.row[row_inx] == NULL)
+    {
+        return -1;
+    }
+
    *new_entry = fd_map.row[row_inx]->entry[inx];
    return 0;
 }