arch/um/include/shared/user.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
   4  */
   5
   6 #ifndef __USER_H__
   7 #define __USER_H__
   8
   9 #include <generated/asm-offsets.h>
  10
  11 /*
  12  * The usual definition - copied here because the kernel provides its own,
  13  * fancier, type-safe, definition.  Using that one would require
  14  * copying too much infrastructure for my taste, so userspace files
  15  * get less checking than kernel files.
  16  */
  17 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  18
  19 /* This is to get size_t */
  20 #ifndef __UM_HOST__
  21 #include <linux/types.h>
  22 #else
  23 #include <stddef.h>
  24 #endif
  25
  26 extern void panic(const char *fmt, ...)
  27         __attribute__ ((format (printf, 1, 2)));
  28
  29 /* Requires preincluding include/linux/kern_levels.h */
  30 #define UM_KERN_EMERG   KERN_EMERG
  31 #define UM_KERN_ALERT   KERN_ALERT
  32 #define UM_KERN_CRIT    KERN_CRIT
  33 #define UM_KERN_ERR     KERN_ERR
  34 #define UM_KERN_WARNING KERN_WARNING
  35 #define UM_KERN_NOTICE  KERN_NOTICE
  36 #define UM_KERN_INFO    KERN_INFO
  37 #define UM_KERN_DEBUG   KERN_DEBUG
  38 #define UM_KERN_CONT    KERN_CONT
  39
  40 #ifdef UML_CONFIG_PRINTK
  41 extern int printk(const char *fmt, ...)
  42         __attribute__ ((format (printf, 1, 2)));
  43 #else
  44 static inline int printk(const char *fmt, ...)
  45 {
  46         return 0;
  47 }
  48 #endif
  49
  50 extern int in_aton(char *str);
  51 extern size_t strlcpy(char *, const char *, size_t);
  52 extern size_t strlcat(char *, const char *, size_t);
  53
  54 /* Copied from linux/compiler-gcc.h since we can't include it directly */
  55 #define barrier() __asm__ __volatile__("": : :"memory")
  56
  57 #endif