Fixed stdio file descriptors not being initialised properly

photon/libc/include/stdio.h

@@ -26,8 +26,8 @@ typedef struct __io_file FILE;
 extern FILE *__get_stdio_file(int);
 
 #define stdin (__get_stdio_file(0))
-#define stdout (__get_stdio_file(0))
-#define stderr (__get_stdio_file(0))
+#define stdout (__get_stdio_file(1))
+#define stderr (__get_stdio_file(2))
 
 extern FILE *fopen(const char *path, const char *mode);
 extern FILE *freopen(const char *path, const char *mode, FILE *fp);

photon/libc/sys/horizon/init.c

@@ -164,6 +164,8 @@ static void init_stdio(mx_bootstrap_handle_t *handles, size_t nhandles)
 
         init_stdio_fd(i, fd_handles[i], n);
     }
+
+    __fio_init(0, 1, 2);
 }
 
 int __crt_init(mx_handle_t bootstrap)
@@ -208,10 +210,12 @@ int __crt_init(mx_handle_t bootstrap)
 #endif
 
     init_stdio(start_handles, nr_handles);
+
     int ret = main(msg->args_num, argv);
 
     __crt_run_atexit();
-    mio_destroy_global_fd_list();
+    mio_fd_cleanup();
+    mio_fs_cleanup();
     mx_task_kill(mx_bootstrap_handle_get(MX_B_TASK_SELF), ret);
 
     /* unreachable */

photon/libc/sys/horizon/unistd.c

@@ -10,6 +10,7 @@ ssize_t read(int fd, void *buf, size_t count)
         return -1;
     }
 
+    __set_errno(0);
     return ret;
 }
 
@@ -21,6 +22,7 @@ ssize_t write(int fd, const void *buf, size_t count)
         return -1;
     }
 
+    __set_errno(0);
     return ret;
 }
 
@@ -32,6 +34,7 @@ int open(const char *pathname, int flags)
         return -1;
     }
 
+    __set_errno(0);
     return ret;
 }
 
@@ -43,5 +46,6 @@ int close(int fd)
         return -1;
     }
 
+    __set_errno(0);
     return ret;
 }