1 /* SPDX-License-Identifier: LGPL-2.1 OR MIT */
2 /*
3 * timerfd definitions for NOLIBC
4 * Copyright (C) 2025 Thomas Weißschuh <thomas.weissschuh@linutronix.de>
5 */
6
7 /* make sure to include all global symbols */
8 #include "../nolibc.h"
9
10 #ifndef _NOLIBC_SYS_TIMERFD_H
11 #define _NOLIBC_SYS_TIMERFD_H
12
13 #include "../sys.h"
14 #include "../time.h"
15
16 #include <linux/timerfd.h>
17
18
19 static __attribute__((unused))
sys_timerfd_create(int clockid,int flags)20 int sys_timerfd_create(int clockid, int flags)
21 {
22 return my_syscall2(__NR_timerfd_create, clockid, flags);
23 }
24
25 static __attribute__((unused))
timerfd_create(int clockid,int flags)26 int timerfd_create(int clockid, int flags)
27 {
28 return __sysret(sys_timerfd_create(clockid, flags));
29 }
30
31
32 static __attribute__((unused))
sys_timerfd_gettime(int fd,struct itimerspec * curr_value)33 int sys_timerfd_gettime(int fd, struct itimerspec *curr_value)
34 {
35 #if defined(__NR_timerfd_gettime)
36 return my_syscall2(__NR_timerfd_gettime, fd, curr_value);
37 #elif defined(__NR_timerfd_gettime64)
38 struct __kernel_itimerspec kcurr_value;
39 int ret;
40
41 ret = my_syscall2(__NR_timerfd_gettime64, fd, &kcurr_value);
42 __nolibc_timespec_kernel_to_user(&kcurr_value.it_interval, &curr_value->it_interval);
43 __nolibc_timespec_kernel_to_user(&kcurr_value.it_value, &curr_value->it_value);
44 return ret;
45 #else
46 return __nolibc_enosys(__func__, fd, curr_value);
47 #endif
48 }
49
50 static __attribute__((unused))
timerfd_gettime(int fd,struct itimerspec * curr_value)51 int timerfd_gettime(int fd, struct itimerspec *curr_value)
52 {
53 return __sysret(sys_timerfd_gettime(fd, curr_value));
54 }
55
56
57 static __attribute__((unused))
sys_timerfd_settime(int fd,int flags,const struct itimerspec * new_value,struct itimerspec * old_value)58 int sys_timerfd_settime(int fd, int flags,
59 const struct itimerspec *new_value, struct itimerspec *old_value)
60 {
61 #if defined(__NR_timerfd_settime)
62 return my_syscall4(__NR_timerfd_settime, fd, flags, new_value, old_value);
63 #elif defined(__NR_timerfd_settime64)
64 struct __kernel_itimerspec knew_value, kold_value;
65 int ret;
66
67 __nolibc_timespec_user_to_kernel(&new_value->it_value, &knew_value.it_value);
68 __nolibc_timespec_user_to_kernel(&new_value->it_interval, &knew_value.it_interval);
69 ret = my_syscall4(__NR_timerfd_settime64, fd, flags, &knew_value, &kold_value);
70 if (old_value) {
71 __nolibc_timespec_kernel_to_user(&kold_value.it_interval, &old_value->it_interval);
72 __nolibc_timespec_kernel_to_user(&kold_value.it_value, &old_value->it_value);
73 }
74 return ret;
75 #else
76 return __nolibc_enosys(__func__, fd, flags, new_value, old_value);
77 #endif
78 }
79
80 static __attribute__((unused))
timerfd_settime(int fd,int flags,const struct itimerspec * new_value,struct itimerspec * old_value)81 int timerfd_settime(int fd, int flags,
82 const struct itimerspec *new_value, struct itimerspec *old_value)
83 {
84 return __sysret(sys_timerfd_settime(fd, flags, new_value, old_value));
85 }
86
87 #endif /* _NOLIBC_SYS_TIMERFD_H */
88