[[PATCH,RFC,2] 20/63] Y2038: add function __futimens64
Commit Message
---
io/futimens.c | 8 +++++++
sysdeps/unix/sysv/linux/futimens.c | 48 ++++++++++++++++++++++++++++++++++++++
time/Versions | 1 +
3 files changed, 57 insertions(+)
Comments
On Wed, 18 Apr 2018, Albert ARIBAUD (3ADEV) wrote:
> + if (! timespec64_to_timespec(&tsp[0], &ts32[0]))
> + {
> + __set_errno(EOVERFLOW);
Globally in this patch series, you need to fix code to follow the GNU
Coding Standards (spaces before '(' in this case).
@@ -32,3 +32,11 @@ futimens (int fd, const struct timespec tsp[2])
return -1;
}
stub_warning (futimens)
+
+int
+__futimens64 (int fd, const struct __timespec64 tsp[2])
+{
+ __set_errno (ENOSYS);
+ return -1;
+}
+stub_warning (__futimens64)
@@ -36,3 +36,51 @@ futimens (int fd, const struct timespec tsp[2])
/* Avoid implicit array coercion in syscall macros. */
return INLINE_SYSCALL (utimensat, 4, fd, NULL, &tsp[0], 0);
}
+
+/* 64-bit time version */
+
+extern int __y2038_linux_support;
+
+int
+__futimens64 (int fd, const struct __timespec64 tsp[2])
+{
+ struct timespec ts32[2];
+/* Only try and use this syscall if defined by kernel */
+#ifdef __NR_utimesat64
+ struct __timespec64 ts64[2];
+ int res;
+#endif
+
+ if (fd < 0)
+ return INLINE_SYSCALL_ERROR_RETURN_VALUE (EBADF);
+
+/* Only try and use this syscall if defined by kernel */
+#ifdef __NR_utimesat64
+ if (__y2038_linux_support)
+ {
+ ts64[0].tv_sec = tsp[0].tv_sec;
+ ts64[0].tv_nsec = tsp[0].tv_nsec;
+ ts64[0].tv_pad = 0;
+ ts64[1].tv_sec = tsp[1].tv_sec;
+ ts64[1].tv_nsec = tsp[1].tv_nsec;
+ ts64[1].tv_pad = 0;
+ res = INLINE_SYSCALL (utimensat64, 4, fd, NULL, &ts64[0], 0);
+ if (res == 0 || errno != ENOSYS)
+ return res;
+ }
+#endif
+
+ if (! timespec64_to_timespec(&tsp[0], &ts32[0]))
+ {
+ __set_errno(EOVERFLOW);
+ return -1;
+ }
+
+ if (! timespec64_to_timespec(&tsp[1], &ts32[1]))
+ {
+ __set_errno(EOVERFLOW);
+ return -1;
+ }
+
+ return INLINE_SYSCALL (utimensat, 4, fd, NULL, &ts32[0], 0);
+}
@@ -79,5 +79,6 @@ libc {
__clock_getres64;
__clock_nanosleep64;
__timespec_get64;
+ __futimens64;
}
}