[[PATCH,RFC,2] 21/63] Y2038: add function __utimensat64
Commit Message
---
io/utimensat.c | 9 ++++++
sysdeps/unix/sysv/linux/utimensat.c | 58 +++++++++++++++++++++++++++++++++++++
time/Versions | 1 +
3 files changed, 68 insertions(+)
@@ -30,3 +30,12 @@ utimensat (int fd, const char *file, const struct timespec tsp[2],
return -1;
}
stub_warning (utimensat)
+
+int
+__utimensat64 (int fd, const char *file, const struct __timespec64 tsp[2],
+ int flags)
+{
+ __set_errno (ENOSYS);
+ return -1;
+}
+stub_warning (__utimensat64)
@@ -34,3 +34,61 @@ utimensat (int fd, const char *file, const struct timespec tsp[2],
/* Avoid implicit array coercion in syscall macros. */
return INLINE_SYSCALL (utimensat, 4, fd, file, &tsp[0], flags);
}
+
+/* 64-bit time version */
+
+extern int __y2038_linux_support;
+
+int
+__utimensat64 (int fd, const char *file, const struct __timespec64 tsp[2],
+ int flags)
+{
+ struct timespec ts32[2], *ts32p = NULL;
+/* Only try and use this syscall if defined by kernel */
+#ifdef __NR_utimensat64
+ struct __timespec64 ts64[2], *ts64p = NULL;
+ int res;
+#endif
+
+ if (file == NULL)
+ return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+
+/* Only try and use this syscall if defined by kernel */
+#ifdef __NR_utimensat64
+ if (__y2038_linux_support)
+ {
+ if (tsp)
+ {
+ 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;
+ ts64p = ts64;
+ }
+
+ res = INLINE_SYSCALL (utimensat64, 4, fd, file, ts64p, flags);
+ if (res == 0 || errno != ENOSYS)
+ return res;
+ }
+#endif
+
+ if (tsp)
+ {
+ 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;
+ }
+ ts32p = ts32;
+ }
+
+ return INLINE_SYSCALL (utimensat, 4, fd, file, ts32p, flags);
+}
@@ -80,5 +80,6 @@ libc {
__clock_nanosleep64;
__timespec_get64;
__futimens64;
+ __utimensat64;
}
}