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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Thomas Weißschuh
6285f0881e
The sys_foo() naming scheme used by the syscall wrappers may collide with application symbols. Especially as 'sys_' is an obvious naming scheme an application may choose for its own custom systemcall wrappers. Avoid these conflicts by using an leading underscore which moves the names into the implementation's namespace. This naming scheme was chosen over a '__nolibc_' prefix, as these functions are not an implementation detail but a documented interface meant to be used by applications. While this may break some existing users, adapting them should be straightforward. Given that nolibc is most-likely vendored, no unexpected breakage should happen. No in-tree users are affected. These conflicts happen when compiling some of the kernel selftests with nolibc. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://patch.msgid.link/20260319-nolibc-namespacing-v1-1-33c22eaddb5e@weissschuh.net
72 lines
1.8 KiB
C
72 lines
1.8 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 __nolibc_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_gettime64)
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__nolibc_assert_time64_type(curr_value->it_value.tv_sec);
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return __nolibc_syscall2(__NR_timerfd_gettime64, fd, curr_value);
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#else
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__nolibc_assert_native_time64();
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return __nolibc_syscall2(__NR_timerfd_gettime, 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_settime64)
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__nolibc_assert_time64_type(new_value->it_value.tv_sec);
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return __nolibc_syscall4(__NR_timerfd_settime64, fd, flags, new_value, old_value);
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#else
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__nolibc_assert_native_time64();
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return __nolibc_syscall4(__NR_timerfd_settime, 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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