include/errno.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright (C) 2014 Samsung Electronics
   4  * Przemyslaw Marczak <p.marczak@samsung.com>
   5  */
   6 #ifndef _ERRNO_H
   7 #define _ERRNO_H
   8
   9 #include <linux/errno.h>
  10
  11 extern int errno;
  12
  13 #define __set_errno(val) do { errno = val; } while (0)
  14
  15 /**
  16  * errno_str() - get description for error number
  17  *
  18  * @errno:      error number (negative in case of error)
  19  * Return:      string describing the error. If CONFIG_ERRNO_STR is not
  20  *              defined an empty string is returned.
  21  */
  22 #ifdef CONFIG_ERRNO_STR
  23 const char *errno_str(int errno);
  24 #else
  25 static const char error_message[] = "";
  26
  27 static inline const char *errno_str(int errno)
  28 {
  29         return error_message;
  30 }
  31 #endif
  32 #endif /* _ERRNO_H */