[RFC,41/52] Y2038: add function __getitimer_t64

Message ID 20170907224219.12483-42-albert.aribaud@3adev.fr
State New
Headers show
Series
  • Make GLIBC Y2038-proof
Related show

Commit Message

Albert ARIBAUD Sept. 7, 2017, 10:42 p.m.
Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>
---
 time/Makefile      |  3 ++-
 time/Versions      |  1 +
 time/getitimer64.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 54 insertions(+), 1 deletion(-)
 create mode 100644 time/getitimer64.c

Patch

diff --git a/time/Makefile b/time/Makefile
index d50c3ddfd8..f2b50626b6 100644
--- a/time/Makefile
+++ b/time/Makefile
@@ -37,7 +37,8 @@  routines := offtime asctime clock ctime ctime_r difftime \
 	    getdate strptime strptime_l			 \
 	    strftime wcsftime strftime_l wcsftime_l	 \
 	    timespec_get                                 \
-	    settimeofday64 nanosleep64
+	    settimeofday64 nanosleep64                   \
+	    getitimer64
 aux :=	    era alt_digit lc-time-cleanup
 
 tests	:= test_time clocktest tst-posixtz tst-strptime tst_wcsftime \
diff --git a/time/Versions b/time/Versions
index 0f4600f33c..cc05014bd8 100644
--- a/time/Versions
+++ b/time/Versions
@@ -77,5 +77,6 @@  libc {
     __settimeofday_t64;
     __nanosleep_t64;
     __adjtime_t64;
+    __getitimer_t64;
   }
 }
diff --git a/time/getitimer64.c b/time/getitimer64.c
new file mode 100644
index 0000000000..2b19adf953
--- /dev/null
+++ b/time/getitimer64.c
@@ -0,0 +1,51 @@ 
+/* Copyright (C) 1991-2017 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 <stddef.h>
+#include <errno.h>
+#include <sys/time.h>
+
+extern int __y2038_linux_support;
+
+/* Set *VALUE to the current setting of timer WHICH.
+   Return 0 on success, -1 on errors.  */
+int
+__getitimer_t64 (enum __itimer_which which,
+                 struct __itimerval_t64 *value)
+{
+  struct itimerval value32, *value32p= NULL;
+
+  if (__y2038_linux_support)
+    {
+      /* TODO: use 64-bit syscall */
+    }
+ 
+  if (value != NULL)
+    value32p = &value32;
+
+  int result = getitimer(which, value32p);
+
+  if (result == 0 && value != NULL)
+    {
+      value->it_interval.tv_sec = value32.it_interval.tv_sec;
+      value->it_interval.tv_usec = value32.it_interval.tv_usec;
+      value->it_value.tv_sec = value32.it_value.tv_sec;
+      value->it_value.tv_usec = value32.it_value.tv_usec;
+    }
+
+  return result;
+}