1/* Copyright (C) 2004-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <nptl/pthreadP.h>
19#include <sysdep.h>
20
21#define __SETXID_1(cmd, arg1) \
22 cmd.id[0] = (long int) arg1
23#define __SETXID_2(cmd, arg1, arg2) \
24 __SETXID_1 (cmd, arg1); cmd.id[1] = (long int) arg2
25#define __SETXID_3(cmd, arg1, arg2, arg3) \
26 __SETXID_2 (cmd, arg1, arg2); cmd.id[2] = (long int) arg3
27
28#ifdef SINGLE_THREAD
29# define INLINE_SETXID_SYSCALL(name, nr, args...) \
30 INLINE_SYSCALL (name, nr, args)
31#elif defined SHARED
32# define INLINE_SETXID_SYSCALL(name, nr, args...) \
33 ({ \
34 int __result; \
35 if (__builtin_expect (__libc_pthread_functions_init, 0)) \
36 { \
37 struct xid_command __cmd; \
38 __cmd.syscall_no = __NR_##name; \
39 __SETXID_##nr (__cmd, args); \
40 __result = PTHFCT_CALL (ptr__nptl_setxid, (&__cmd)); \
41 } \
42 else \
43 __result = INLINE_SYSCALL (name, nr, args); \
44 __result; \
45 })
46#else
47# define INLINE_SETXID_SYSCALL(name, nr, args...) \
48 ({ \
49 extern __typeof (__nptl_setxid) __nptl_setxid __attribute__((weak));\
50 int __result; \
51 if (__glibc_unlikely (__nptl_setxid != NULL)) \
52 { \
53 struct xid_command __cmd; \
54 __cmd.syscall_no = __NR_##name; \
55 __SETXID_##nr (__cmd, args); \
56 __result =__nptl_setxid (&__cmd); \
57 } \
58 else \
59 __result = INLINE_SYSCALL (name, nr, args); \
60 __result; \
61 })
62#endif
63