1 /* Syscall wrapper that do not set errno. Linux version.
2 Copyright (C) 2017-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <sysdep.h>
20 #include <fcntl.h>
21
22 /* This function is used on maybe_enable_malloc_check (elf/dl-tunables.c)
23 and to avoid having to build/use multiple versions if stack protection
24 in enabled it is defined as inline. */
25 static inline int
__access_noerrno(const char * pathname,int mode)26 __access_noerrno (const char *pathname, int mode)
27 {
28 int res;
29 #ifdef __NR_access
30 res = INTERNAL_SYSCALL_CALL (access, pathname, mode);
31 #else
32 res = INTERNAL_SYSCALL_CALL (faccessat, AT_FDCWD, pathname, mode);
33 #endif
34 if (INTERNAL_SYSCALL_ERROR_P (res))
35 return INTERNAL_SYSCALL_ERRNO (res);
36 return 0;
37 }
38
39 static inline int
__kill_noerrno(pid_t pid,int sig)40 __kill_noerrno (pid_t pid, int sig)
41 {
42 int res;
43 res = INTERNAL_SYSCALL_CALL (kill, pid, sig);
44 if (INTERNAL_SYSCALL_ERROR_P (res))
45 return INTERNAL_SYSCALL_ERRNO (res);
46 return 0;
47 }
48