Line data    Source code

       1             : /* SPDX-License-Identifier: LGPL-2.1+ */
       2             : #pragma once
       3             : 
       4             : #include <stdbool.h>
       5             : #include <sys/stat.h>
       6             : #include <sys/types.h>
       7             : 
       8             : #include "macro.h"
       9             : 
      10         183 : static inline void umaskp(mode_t *u) {
      11         183 :         umask(*u & 0777);
      12         183 : }
      13             : 
      14             : #define _cleanup_umask_ _cleanup_(umaskp)
      15             : 
      16             : /* We make use of the fact here that the umask() concept is using only the lower 9 bits of mode_t, although
      17             :  * mode_t has space for the file type in the bits further up. We simply OR in the file type mask S_IFMT to
      18             :  * distinguish the first and the second iteration of the RUN_WITH_UMASK() loop, so that we can run the first
      19             :  * one, and exit on the second. */
      20             : 
      21             : assert_cc((S_IFMT & 0777) == 0);
      22             : 
      23             : #define RUN_WITH_UMASK(mask)                                            \
      24             :         for (_cleanup_umask_ mode_t _saved_umask_ = umask(mask) | S_IFMT; \
      25             :              FLAGS_SET(_saved_umask_, S_IFMT);                          \
      26             :              _saved_umask_ &= 0777)