61d0b5a4b2
This makes them a bit more like the kernel headers, so we can include more real kernel headers in our tests. In addition this means that we don't break tools/virtio with the next patch. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
27 lines
525 B
C
27 lines
525 B
C
#ifndef ERR_H
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#define ERR_H
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#define MAX_ERRNO 4095
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#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
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static inline void * __must_check ERR_PTR(long error)
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{
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return (void *) error;
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}
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static inline long __must_check PTR_ERR(const void *ptr)
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{
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return (long) ptr;
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}
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static inline long __must_check IS_ERR(const void *ptr)
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{
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return IS_ERR_VALUE((unsigned long)ptr);
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}
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static inline long __must_check IS_ERR_OR_NULL(const void *ptr)
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{
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return !ptr || IS_ERR_VALUE((unsigned long)ptr);
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}
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#endif /* ERR_H */
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