diff options
| -rw-r--r-- | libc/sysdeps/linux/common/bits/kernel-features.h | 5 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/poll.c | 3 |
2 files changed, 7 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/bits/kernel-features.h b/libc/sysdeps/linux/common/bits/kernel-features.h index 88297349a..b04ad6d3e 100644 --- a/libc/sysdeps/linux/common/bits/kernel-features.h +++ b/libc/sysdeps/linux/common/bits/kernel-features.h @@ -28,6 +28,11 @@ #include <linux/version.h> #define __LINUX_KERNEL_VERSION LINUX_VERSION_CODE +/* When was `poll' introduced? */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_POLL_SYSCALL 1 +#endif + /* Real-time signal became usable in 2.1.70. */ #if __LINUX_KERNEL_VERSION >= 131398 # define __ASSUME_REALTIME_SIGNALS 1 diff --git a/libc/sysdeps/linux/common/poll.c b/libc/sysdeps/linux/common/poll.c index 4a6f06e19..52f6c76b4 100644 --- a/libc/sysdeps/linux/common/poll.c +++ b/libc/sysdeps/linux/common/poll.c @@ -19,8 +19,9 @@ #include <sys/syscall.h> #include <sys/poll.h> +#include <bits/kernel-features.h> -#ifdef __NR_poll +#if defined __ASSUME_POLL_SYSCALL && defined __NR_poll _syscall3(int, poll, struct pollfd *, fds, unsigned long int, nfds, int, timeout) |