1 /*
2 * Copyright (c) 2015 Google Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files
6 * (the "Software"), to deal in the Software without restriction,
7 * including without limitation the rights to use, copy, modify, merge,
8 * publish, distribute, sublicense, and/or sell copies of the Software,
9 * and to permit persons to whom the Software is furnished to do so,
10 * subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23 #ifndef __ERR_PTR_H
24 #define __ERR_PTR_H
25
26 #include <lk/compiler.h>
27 #include <stdbool.h>
28 #include <stdint.h>
29 #include <uapi/err.h>
30
PTR_ERR(const void * ptr)31 static inline int PTR_ERR(const void* ptr) {
32 return (int)(intptr_t)ptr;
33 }
34
IS_ERR(const void * ptr)35 static inline __ALWAYS_INLINE bool IS_ERR(const void* ptr) {
36 return ptr >= (void*)(uintptr_t)ERR_USER_BASE;
37 }
38
39 #endif
40