From da69cfb17b2afbb8692b74eefb844f85febb6674 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= Date: Mon, 28 Apr 2025 14:40:11 +0200 Subject: tools/nolibc: add timerfd functionality MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is used in various selftests and will be handy when integrating those with nolibc. Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau Link: https://lore.kernel.org/r/20250428-nolibc-misc-v2-10-3c043eeab06c@linutronix.de Signed-off-by: Thomas Weißschuh --- tools/include/nolibc/Makefile | 1 + tools/include/nolibc/nolibc.h | 1 + tools/include/nolibc/sys/timerfd.h | 87 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 89 insertions(+) create mode 100644 tools/include/nolibc/sys/timerfd.h (limited to 'tools/include') diff --git a/tools/include/nolibc/Makefile b/tools/include/nolibc/Makefile index da4771ef8984..58c4ede9c294 100644 --- a/tools/include/nolibc/Makefile +++ b/tools/include/nolibc/Makefile @@ -53,6 +53,7 @@ all_files := \ sys/stat.h \ sys/syscall.h \ sys/time.h \ + sys/timerfd.h \ sys/types.h \ sys/wait.h \ time.h \ diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h index 966302c9e8e1..37a55f703dfc 100644 --- a/tools/include/nolibc/nolibc.h +++ b/tools/include/nolibc/nolibc.h @@ -102,6 +102,7 @@ #include "sys/stat.h" #include "sys/syscall.h" #include "sys/time.h" +#include "sys/timerfd.h" #include "sys/wait.h" #include "ctype.h" #include "elf.h" diff --git a/tools/include/nolibc/sys/timerfd.h b/tools/include/nolibc/sys/timerfd.h new file mode 100644 index 000000000000..4375d546ba58 --- /dev/null +++ b/tools/include/nolibc/sys/timerfd.h @@ -0,0 +1,87 @@ +/* SPDX-License-Identifier: LGPL-2.1 OR MIT */ +/* + * timerfd definitions for NOLIBC + * Copyright (C) 2025 Thomas Weißschuh + */ + +/* make sure to include all global symbols */ +#include "../nolibc.h" + +#ifndef _NOLIBC_SYS_TIMERFD_H +#define _NOLIBC_SYS_TIMERFD_H + +#include "../sys.h" +#include "../time.h" + +#include + + +static __attribute__((unused)) +int sys_timerfd_create(int clockid, int flags) +{ + return my_syscall2(__NR_timerfd_create, clockid, flags); +} + +static __attribute__((unused)) +int timerfd_create(int clockid, int flags) +{ + return __sysret(sys_timerfd_create(clockid, flags)); +} + + +static __attribute__((unused)) +int sys_timerfd_gettime(int fd, struct itimerspec *curr_value) +{ +#if defined(__NR_timerfd_gettime) + return my_syscall2(__NR_timerfd_gettime, fd, curr_value); +#elif defined(__NR_timerfd_gettime64) + struct __kernel_itimerspec kcurr_value; + int ret; + + ret = my_syscall2(__NR_timerfd_gettime64, fd, &kcurr_value); + __nolibc_timespec_kernel_to_user(&kcurr_value.it_interval, &curr_value->it_interval); + __nolibc_timespec_kernel_to_user(&kcurr_value.it_value, &curr_value->it_value); + return ret; +#else + return __nolibc_enosys(__func__, fd, curr_value); +#endif +} + +static __attribute__((unused)) +int timerfd_gettime(int fd, struct itimerspec *curr_value) +{ + return __sysret(sys_timerfd_gettime(fd, curr_value)); +} + + +static __attribute__((unused)) +int sys_timerfd_settime(int fd, int flags, + const struct itimerspec *new_value, struct itimerspec *old_value) +{ +#if defined(__NR_timerfd_settime) + return my_syscall4(__NR_timerfd_settime, fd, flags, new_value, old_value); +#elif defined(__NR_timerfd_settime64) + struct __kernel_itimerspec knew_value, kold_value; + int ret; + + __nolibc_timespec_user_to_kernel(&new_value->it_value, &knew_value.it_value); + __nolibc_timespec_user_to_kernel(&new_value->it_interval, &knew_value.it_interval); + ret = my_syscall4(__NR_timerfd_settime64, fd, flags, &knew_value, &kold_value); + if (old_value) { + __nolibc_timespec_kernel_to_user(&kold_value.it_interval, &old_value->it_interval); + __nolibc_timespec_kernel_to_user(&kold_value.it_value, &old_value->it_value); + } + return ret; +#else + return __nolibc_enosys(__func__, fd, flags, new_value, old_value); +#endif +} + +static __attribute__((unused)) +int timerfd_settime(int fd, int flags, + const struct itimerspec *new_value, struct itimerspec *old_value) +{ + return __sysret(sys_timerfd_settime(fd, flags, new_value, old_value)); +} + +#endif /* _NOLIBC_SYS_TIMERFD_H */ -- cgit v1.2.3