[ceph.git] / ceph / src / include / err.h

#ifndef CEPH_ERR_H
#define CEPH_ERR_H

/*
 * adapted from linux 2.6.24 include/linux/err.h
 */
#define MAX_ERRNO 4095
#define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO)

#include <errno.h>

/* this generates a warning in c++; caller can do the cast manually
static inline void *ERR_PTR(long error)
{
  return (void *) error;
}
*/

static inline long PTR_ERR(const void *ptr)
{
  return (long) ptr;
}

static inline long IS_ERR(const void *ptr)
{
  return IS_ERR_VALUE((unsigned long)ptr);
}

#endif
Commit	Line	Data
7c673cae FG	1	#ifndef CEPH_ERR_H
	2	#define CEPH_ERR_H
	3
	4	/*
	5	* adapted from linux 2.6.24 include/linux/err.h
	6	*/
	7	#define MAX_ERRNO 4095
	8	#define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO)
	9
	10	#include <errno.h>
	11
	12	/* this generates a warning in c++; caller can do the cast manually
	13	static inline void *ERR_PTR(long error)
	14	{
	15	return (void *) error;
	16	}
	17	*/
	18
	19	static inline long PTR_ERR(const void *ptr)
	20	{
	21	return (long) ptr;
	22	}
	23
	24	static inline long IS_ERR(const void *ptr)
	25	{
	26	return IS_ERR_VALUE((unsigned long)ptr);
	27	}
	28
	29	#endif