[[PATCH,RFC,2] 45/63] Y2038: add function __nanosleep64
Commit Message
---
posix/Makefile | 2 +-
posix/Versions | 1 +
posix/nanosleep64.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 65 insertions(+), 1 deletion(-)
create mode 100644 posix/nanosleep64.c
@@ -63,7 +63,7 @@ routines := \
spawnattr_setsigmask spawnattr_setschedpolicy spawnattr_setschedparam \
posix_madvise \
get_child_max sched_cpucount sched_cpualloc sched_cpufree \
- sched_rr_gi64
+ sched_rr_gi64 nanosleep64
aux := init-posix environ
tests := test-errno tstgetopt testfnm runtests runptests \
@@ -137,6 +137,7 @@ libc {
GLIBC_2.27 {
glob; glob64;
__sched_rr_get_interval64;
+ __nanosleep64;
}
GLIBC_PRIVATE {
__libc_fork; __libc_pread; __libc_pwrite;
new file mode 100644
@@ -0,0 +1,63 @@
+/* Pause execution for a number of nanoseconds
+
+ Copyright (C) 2018 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 <time.h>
+
+extern int __y2038_linux_support;
+
+/* Pause execution for a number of nanoseconds. */
+int
+__nanosleep64 (const struct __timespec64 *requested_time,
+ struct __timespec64 *remaining)
+{
+ struct timespec treq32, *treqp32 = NULL;
+ struct timespec trem32, *tremp32 = NULL;
+
+ if (__y2038_linux_support)
+ {
+ /* TODO: use 64-bit time syscalls */
+ }
+
+ if (requested_time)
+ {
+ if (requested_time->tv_sec > INT_MAX)
+ {
+ __set_errno(EOVERFLOW);
+ return -1;
+ }
+ treq32.tv_sec = requested_time->tv_sec;
+ treq32.tv_nsec = requested_time->tv_nsec;
+ treqp32 = & treq32;
+ }
+
+ if (remaining)
+ tremp32 = &trem32;
+
+ int result = __nanosleep(treqp32, tremp32);
+
+ if (result == 1 && errno == EINTR && remaining)
+ {
+ remaining->tv_sec = trem32.tv_sec;
+ remaining->tv_nsec = trem32.tv_nsec;
+ remaining->tv_pad = 0;
+ }
+
+ return result;
+}