Hi,
thanks, applied and pushed,
best regards
Waldemar
Elliot Thomas wrote,
> Recently I tried compiling QEMU user emulation with uClibc on Aarch64, and
> found the 'futimesat' symbol was missing (but still defined in headers).
>
> This emulation is similar to the 'lutimesat' emulation.
>
> Regards,
> Elliot.
>
> From 60d600b56627cceace22da19ea3803aa7ab6bcf2 Mon Sep 17 00:00:00 2001
> From: Elliot Thomas <ell...@midnightspark.net>
> Date: Mon, 6 Mar 2023 01:21:05 +0000
> Subject: [PATCH] Emulate 'futimesat' when __NR_futimesat is not available.
>
> ---
> libc/sysdeps/linux/common/futimesat.c | 26 ++++++++++++++++++++++++--
> 1 file changed, 24 insertions(+), 2 deletions(-)
>
> diff --git a/libc/sysdeps/linux/common/futimesat.c
> b/libc/sysdeps/linux/common/futimesat.c
> index bd73eae7e..fd19fea7c 100644
> --- a/libc/sysdeps/linux/common/futimesat.c
> +++ b/libc/sysdeps/linux/common/futimesat.c
> @@ -11,6 +11,28 @@
>
> #ifdef __NR_futimesat
> _syscall3(int, futimesat, int, fd, const char *, file, const struct timeval
> *, tvp)
> -#else
> -/* should add emulation with futimes() and /proc/self/fd/ ... */
> +#elif defined __NR_utimensat
> +#include <errno.h>
> +#define __need_NULL
> +#include <stddef.h>
> +
> +int futimesat(int dirfd, const char *file, const struct timeval tvp[2])
> +{
> + struct timespec ts[2];
> +
> + if (tvp != NULL)
> + {
> + if (tvp[0].tv_usec < 0 || tvp[0].tv_usec >= 1000000
> + || tvp[1].tv_usec < 0 || tvp[1].tv_usec >= 1000000)
> + {
> + __set_errno(EINVAL);
> + return -1;
> + }
> +
> + TIMEVAL_TO_TIMESPEC(&tvp[0], &ts[0]);
> + TIMEVAL_TO_TIMESPEC(&tvp[1], &ts[1]);
> + }
> +
> + return utimensat(dirfd, file, tvp ? ts : NULL, 0);
> +}
> #endif
> --
> 2.39.2
>
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