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da69cfb17b
This is used in various selftests and will be handy when integrating those with nolibc. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250428-nolibc-misc-v2-10-3c043eeab06c@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* timerfd definitions for NOLIBC
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* Copyright (C) 2025 Thomas Weißschuh <thomas.weissschuh@linutronix.de>
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*/
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/* make sure to include all global symbols */
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#include "../nolibc.h"
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#ifndef _NOLIBC_SYS_TIMERFD_H
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#define _NOLIBC_SYS_TIMERFD_H
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#include "../sys.h"
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#include "../time.h"
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#include <linux/timerfd.h>
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static __attribute__((unused))
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int sys_timerfd_create(int clockid, int flags)
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{
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return my_syscall2(__NR_timerfd_create, clockid, flags);
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}
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static __attribute__((unused))
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int timerfd_create(int clockid, int flags)
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{
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return __sysret(sys_timerfd_create(clockid, flags));
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}
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static __attribute__((unused))
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int sys_timerfd_gettime(int fd, struct itimerspec *curr_value)
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{
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#if defined(__NR_timerfd_gettime)
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return my_syscall2(__NR_timerfd_gettime, fd, curr_value);
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#elif defined(__NR_timerfd_gettime64)
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struct __kernel_itimerspec kcurr_value;
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int ret;
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ret = my_syscall2(__NR_timerfd_gettime64, fd, &kcurr_value);
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__nolibc_timespec_kernel_to_user(&kcurr_value.it_interval, &curr_value->it_interval);
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__nolibc_timespec_kernel_to_user(&kcurr_value.it_value, &curr_value->it_value);
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return ret;
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#else
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return __nolibc_enosys(__func__, fd, curr_value);
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#endif
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}
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static __attribute__((unused))
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int timerfd_gettime(int fd, struct itimerspec *curr_value)
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{
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return __sysret(sys_timerfd_gettime(fd, curr_value));
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}
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static __attribute__((unused))
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int sys_timerfd_settime(int fd, int flags,
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const struct itimerspec *new_value, struct itimerspec *old_value)
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{
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#if defined(__NR_timerfd_settime)
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return my_syscall4(__NR_timerfd_settime, fd, flags, new_value, old_value);
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#elif defined(__NR_timerfd_settime64)
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struct __kernel_itimerspec knew_value, kold_value;
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int ret;
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__nolibc_timespec_user_to_kernel(&new_value->it_value, &knew_value.it_value);
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__nolibc_timespec_user_to_kernel(&new_value->it_interval, &knew_value.it_interval);
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ret = my_syscall4(__NR_timerfd_settime64, fd, flags, &knew_value, &kold_value);
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if (old_value) {
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__nolibc_timespec_kernel_to_user(&kold_value.it_interval, &old_value->it_interval);
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__nolibc_timespec_kernel_to_user(&kold_value.it_value, &old_value->it_value);
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}
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return ret;
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#else
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return __nolibc_enosys(__func__, fd, flags, new_value, old_value);
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#endif
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}
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static __attribute__((unused))
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int timerfd_settime(int fd, int flags,
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const struct itimerspec *new_value, struct itimerspec *old_value)
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{
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return __sysret(sys_timerfd_settime(fd, flags, new_value, old_value));
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}
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#endif /* _NOLIBC_SYS_TIMERFD_H */
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