[RFC,29/52] Y2038: add function __stime_t64
Commit Message
These implementations use only 32-bit time kernel syscalls.
Therefore, stime() will always set errno to EOVERFLOW and return -1 for dates beyond Y2038.
Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
---
sysdeps/unix/sysv/linux/stime.c | 70 +++++++++++++++++++++++++++++++++++++++++
time/Versions | 1 +
time/stime.c | 17 ++++++++++
3 files changed, 88 insertions(+)
create mode 100644 sysdeps/unix/sysv/linux/stime.c
new file mode 100644
@@ -0,0 +1,70 @@
+/* Copyright (C) 1992-2017 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <stddef.h> /* For NULL. */
+#include <sys/time.h>
+#include <time.h>
+
+/* Set the system clock to *WHEN. */
+
+int
+stime (const time_t *when)
+{
+ struct timeval tv;
+
+ if (when == NULL)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ tv.tv_sec = *when;
+ tv.tv_usec = 0;
+ return __settimeofday (&tv, (struct timezone *) 0);
+}
+
+/* 64-bit time version */
+
+extern int __y2038_linux_support;
+
+int
+__stime_t64 (const __time64_t *when)
+{
+ struct timeval tv32;
+
+ if (when == NULL)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ if (__y2038_linux_support)
+ {
+ /* TODO: implement 64-bit-time syscall case */
+ }
+
+ if (*when > INT_MAX)
+ {
+ __set_errno (EOVERFLOW);
+ return -1;
+ }
+
+ tv32.tv_sec = *when;
+ tv32.tv_usec = 0;
+ return __settimeofday (&tv32, (struct timezone *) 0);
+}
@@ -72,5 +72,6 @@ libc {
GLIBC_Y2038 {
__timespec_get64;
__time_t64;
+ __stime_t64;
}
}
@@ -35,3 +35,20 @@ stime (const time_t *when)
}
stub_warning (stime)
+
+/* 64-bit time version */
+
+int
+__stime_t64 (const __time64_t *when)
+{
+ if (when == NULL)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ __set_errno (ENOSYS);
+ return -1;
+}
+
+stub_warning (__stime_t64)