linux/tools/include/nolibc/poll.h
Thomas Weißschuh ba7fd03845 tools/nolibc: prefer explicit 64-bit time-related system calls
Make sure to always use the 64-bit safe system calls
in preparation for 64-bit time_t on 32-bit architectures.

Also prevent issues on kernels which disable CONFIG_COMPAT_32BIT_TIME
and therefore don't provide the 32-bit system calls anymore.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20251220-nolibc-uapi-types-v3-5-c662992f75d7@weissschuh.net
2026-01-04 10:29:00 +01:00

51 lines
1.1 KiB
C

/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* poll definitions for NOLIBC
* Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
*/
/* make sure to include all global symbols */
#include "nolibc.h"
#ifndef _NOLIBC_POLL_H
#define _NOLIBC_POLL_H
#include "arch.h"
#include "sys.h"
#include <linux/poll.h>
#include <linux/time.h>
/*
* int poll(struct pollfd *fds, int nfds, int timeout);
*/
static __attribute__((unused))
int sys_poll(struct pollfd *fds, int nfds, int timeout)
{
#if defined(__NR_ppoll_time64)
struct __kernel_timespec t;
if (timeout >= 0) {
t.tv_sec = timeout / 1000;
t.tv_nsec = (timeout % 1000) * 1000000;
}
return my_syscall5(__NR_ppoll_time64, fds, nfds, (timeout >= 0) ? &t : NULL, NULL, 0);
#else
struct __kernel_old_timespec t;
if (timeout >= 0) {
t.tv_sec = timeout / 1000;
t.tv_nsec = (timeout % 1000) * 1000000;
}
return my_syscall5(__NR_ppoll, fds, nfds, (timeout >= 0) ? &t : NULL, NULL, 0);
#endif
}
static __attribute__((unused))
int poll(struct pollfd *fds, int nfds, int timeout)
{
return __sysret(sys_poll(fds, nfds, timeout));
}
#endif /* _NOLIBC_POLL_H */