[glibc] linux: Add 64-bit time_t support for wait3

[glibc] linux: Add 64-bit time_t support for wait3

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f1ed4d4c2cb24f8f0d4f54c89847adf2bb185f50

commit f1ed4d4c2cb24f8f0d4f54c89847adf2bb185f50
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Fri Jul 24 15:05:19 2020 -0300

    linux: Add 64-bit time_t support for wait3
    
    It basically calls the 64-bit time_t wait4 internal symbol.
    
    Checked on x86_64-linux-gnu and i686-linux-gnu.
    
    Reviewed-by: Lukasz Majewski <lukma@denx.de>

Diff:
---
 include/sys/resource.h          |  4 ++++
 sysdeps/unix/sysv/linux/wait3.c | 44 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/include/sys/resource.h b/include/sys/resource.h
index 64925f257c..2235b020fc 100644
--- a/include/sys/resource.h
+++ b/include/sys/resource.h
@@ -138,12 +138,16 @@ libc_hidden_proto (__setrlimit);
 #if __TIMESIZE == 64
 # define __getrusage64 __getrusage
 # define __wait4_time64 __wait4
+# define __wait3_time64 __wait3
 #else
 extern int __getrusage64 (enum __rusage_who who, struct __rusage64 *usage);
 libc_hidden_proto (__getrusage64)
 extern pid_t __wait4_time64 (pid_t pid, int *stat_loc, int options,
                              struct __rusage64 *usage);
 libc_hidden_proto (__wait4_time64)
+extern pid_t __wait3_time64 (int *stat_loc, int options,
+                             struct __rusage64 *usage);
+libc_hidden_proto (__wait3_time64)
 #endif
 #endif
 #endif
diff --git a/sysdeps/unix/sysv/linux/wait3.c b/sysdeps/unix/sysv/linux/wait3.c
new file mode 100644
index 0000000000..c05776f7ab
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/wait3.c
@@ -0,0 +1,44 @@
+/* Wait for process to change state, BSD style.  Linux version.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <sys/wait.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+
+pid_t
+__wait3_time64 (int *stat_loc, int options, struct __rusage64 *usage)
+{
+  return __wait4_time64 (WAIT_ANY, stat_loc, options, usage);
+}
+#if __TIMESIZE != 64
+libc_hidden_def (__wait3_time64)
+
+pid_t
+__wait3 (int *stat_loc, int options, struct rusage *usage)
+{
+  struct __rusage64 usage64;
+  pid_t ret = __wait3_time64 (stat_loc, options,
+			      usage != NULL ? &usage64 : NULL);
+  if (ret > 0 && usage != NULL)
+     rusage64_to_rusage (&usage64, usage);
+
+  return ret;
+}
+#endif
+
+weak_alias (__wait3, wait3)