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| author | Al Viro | 2017-07-08 17:40:39 +0200 |
|---|---|---|
| committer | Al Viro | 2017-08-31 23:32:37 +0200 |
| commit | 4f59c718521a0f00b6589da6b8fcea2dc296026d (patch) | |
| tree | f1358931362a8434ed4e1df2d72585f85e77f210 /include/linux/syscalls.h | |
| parent | Linux 4.13-rc7 (diff) | |
| download | kernel-qcow2-linux-4f59c718521a0f00b6589da6b8fcea2dc296026d.tar.gz kernel-qcow2-linux-4f59c718521a0f00b6589da6b8fcea2dc296026d.tar.xz kernel-qcow2-linux-4f59c718521a0f00b6589da6b8fcea2dc296026d.zip | |
teach SYSCALL_DEFINE/COMPAT_SYSCALL_DEFINE to handle __bitwise arguments
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/syscalls.h')
| -rw-r--r-- | include/linux/syscalls.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 3cb15ea48aee..0bc1d2e8cc17 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -100,11 +100,12 @@ union bpf_attr; #define __MAP(n,...) __MAP##n(__VA_ARGS__) #define __SC_DECL(t, a) t a -#define __TYPE_IS_L(t) (__same_type((t)0, 0L)) -#define __TYPE_IS_UL(t) (__same_type((t)0, 0UL)) -#define __TYPE_IS_LL(t) (__same_type((t)0, 0LL) || __same_type((t)0, 0ULL)) +#define __TYPE_AS(t, v) __same_type((__force t)0, v) +#define __TYPE_IS_L(t) (__TYPE_AS(t, 0L)) +#define __TYPE_IS_UL(t) (__TYPE_AS(t, 0UL)) +#define __TYPE_IS_LL(t) (__TYPE_AS(t, 0LL) || __TYPE_AS(t, 0ULL)) #define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a -#define __SC_CAST(t, a) (t) a +#define __SC_CAST(t, a) (__force t) a #define __SC_ARGS(t, a) a #define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long)) |