src/patches/qemu-4.1.0-build-fix-glibc-2.31.patch

   1 From 0f1f2d4596aee037d3ccbcf10592466daa54107f Mon Sep 17 00:00:00 2001
   2 From: Laurent Vivier <laurent@vivier.eu>
   3 Date: Tue, 12 Nov 2019 15:25:56 +0100
   4 Subject: [PATCH] linux-user: remove host stime() syscall
   5
   6 stime() has been withdrawn from glibc
   7 (12cbde1dae6f "Use clock_settime to implement stime; withdraw stime.")
   8
   9 Implement the target stime() syscall using host
  10 clock_settime(CLOCK_REALTIME, ...) as it is done internally in glibc.
  11
  12 Tested qemu-ppc/x86_64 with:
  13
  14         #include <time.h>
  15         #include <stdio.h>
  16
  17         int main(void)
  18         {
  19                 time_t t;
  20                 int ret;
  21
  22                 /* date -u -d"2019-11-12T15:11:00" "+%s" */
  23                 t = 1573571460;
  24                 ret = stime(&t);
  25                 printf("ret %d\n", ret);
  26                 return 0;
  27         }
  28
  29         # date; ./stime; date
  30         Tue Nov 12 14:18:32 UTC 2019
  31         ret 0
  32         Tue Nov 12 15:11:00 UTC 2019
  33
  34 Buglink: https://bugs.launchpad.net/qemu/+bug/1852115
  35 Reported-by: Cole Robinson <crobinso@redhat.com>
  36 Signed-off-by: Laurent Vivier <laurent@vivier.eu>
  37 Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
  38 Message-Id: <20191112142556.6335-1-laurent@vivier.eu>
  39 ---
  40  linux-user/syscall.c | 8 +++++---
  41  1 file changed, 5 insertions(+), 3 deletions(-)
  42
  43 diff --git a/linux-user/syscall.c b/linux-user/syscall.c
  44 index 4e97bcf..ce399a5 100644
  45 --- a/linux-user/syscall.c
  46 +++ b/linux-user/syscall.c
  47 @@ -7764,10 +7764,12 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
  48  #ifdef TARGET_NR_stime /* not on alpha */
  49      case TARGET_NR_stime:
  50          {
  51 -            time_t host_time;
  52 -            if (get_user_sal(host_time, arg1))
  53 +            struct timespec ts;
  54 +            ts.tv_nsec = 0;
  55 +            if (get_user_sal(ts.tv_sec, arg1)) {
  56                  return -TARGET_EFAULT;
  57 -            return get_errno(stime(&host_time));
  58 +            }
  59 +            return get_errno(clock_settime(CLOCK_REALTIME, &ts));
  60          }
  61  #endif
  62  #ifdef TARGET_NR_alarm /* not on alpha */
  63 --
  64 1.8.3.1
  65