diff options
Diffstat (limited to 'include/linux/syscalls.h')
| -rw-r--r-- | include/linux/syscalls.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 3b6fc13cb46a..9660a8bdcbbe 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -99,6 +99,7 @@ struct sigaltstack; #define __TYPE_IS_LL(t) (__same_type((t)0, 0LL) || __same_type((t)0, 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_ARGS(t, a) a #define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long)) #ifdef CONFIG_FTRACE_SYSCALLS @@ -200,13 +201,16 @@ extern struct trace_event_functions exit_syscall_print_funcs; #define SYSCALL_DEFINE(name) static inline long SYSC_##name +#define __PROTECT(...) asmlinkage_protect(__VA_ARGS__) #define __SYSCALL_DEFINEx(x, name, ...) \ asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \ asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \ { \ + long ret = SYSC##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \ __MAP(x,__SC_TEST,__VA_ARGS__); \ - return SYSC##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \ + __PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \ + return ret; \ } \ SYSCALL_ALIAS(sys##name, SyS##name); \ static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) |