You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
26 lines
525 B
26 lines
525 B
#ifndef ERR_H
|
|
#define ERR_H
|
|
#define MAX_ERRNO 4095
|
|
|
|
#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
|
|
|
|
static inline void * __must_check ERR_PTR(long error)
|
|
{
|
|
return (void *) error;
|
|
}
|
|
|
|
static inline long __must_check PTR_ERR(const void *ptr)
|
|
{
|
|
return (long) ptr;
|
|
}
|
|
|
|
static inline long __must_check IS_ERR(const void *ptr)
|
|
{
|
|
return IS_ERR_VALUE((unsigned long)ptr);
|
|
}
|
|
|
|
static inline long __must_check IS_ERR_OR_NULL(const void *ptr)
|
|
{
|
|
return !ptr || IS_ERR_VALUE((unsigned long)ptr);
|
|
}
|
|
#endif /* ERR_H */
|
|
|