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)) 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)) 26 int timerfd_create(int clockid, int flags) 27 { 28 return __sysret(sys_timerfd_create(clockid, flags)); 29 } 30 31 32 static __attribute__((unused)) 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)) 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)) 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)) 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