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author | Kent Overstreet <kent.overstreet@gmail.com> | 2017-01-08 00:13:18 -0900 |
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committer | Kent Overstreet <kent.overstreet@gmail.com> | 2017-01-20 09:07:08 -0900 |
commit | b33fc8298f7e13226b9895abc57c9bfce5e3fa2d (patch) | |
tree | a3d2a5a909b6372f7777c1c5c18cef5f81d123a9 /include/linux/typecheck.h | |
parent | 7f4191a202ea4558ca2d5eb8a47daea33c9999c7 (diff) |
bcache in userspace; userspace fsck
Diffstat (limited to 'include/linux/typecheck.h')
-rw-r--r-- | include/linux/typecheck.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/typecheck.h b/include/linux/typecheck.h new file mode 100644 index 00000000..eb5b74a5 --- /dev/null +++ b/include/linux/typecheck.h @@ -0,0 +1,24 @@ +#ifndef TYPECHECK_H_INCLUDED +#define TYPECHECK_H_INCLUDED + +/* + * Check at compile time that something is of a particular type. + * Always evaluates to 1 so you may use it easily in comparisons. + */ +#define typecheck(type,x) \ +({ type __dummy; \ + typeof(x) __dummy2; \ + (void)(&__dummy == &__dummy2); \ + 1; \ +}) + +/* + * Check at compile time that 'function' is a certain type, or is a pointer + * to that type (needs to use typedef for the function type.) + */ +#define typecheck_fn(type,function) \ +({ typeof(type) __tmp = function; \ + (void)__tmp; \ +}) + +#endif /* TYPECHECK_H_INCLUDED */ |