sysv: Define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64

On y2038 safe 32-bit systems the Linux kernel expects itimerval
and rusage to use a 32-bit time_t, even though the other time_t's
are 64-bit. There are currently no plans to make 64-bit time_t versions
of these structs.

There are also other occurrences where the time passed to the kernel via
timeval doesn't match the wordsize.

To handle these cases let's define a new macro
__KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64. This macro specifies if the
kernel's old_timeval matches the new timeval64. This should be 1 for
64-bit architectures except for Alpha's osf syscalls. The define should
be 0 for 32-bit architectures and Alpha's osf syscalls.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

bits/typesizes.h

@@ -76,10 +76,16 @@
 
 /* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
 # define __STATFS_MATCHES_STATFS64  1
+
+/* And for getitimer, setitimer and rusage  */
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
 
 # define __STATFS_MATCHES_STATFS64  0
+
+/* And for getitimer, setitimer and rusage  */
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 0
 #endif
 
 /* Number of descriptors that can fit in an `fd_set'.  */

sysdeps/unix/sysv/linux/alpha/bits/typesizes.h

@@ -73,6 +73,9 @@
 /* Not for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
 # define __STATFS_MATCHES_STATFS64  0
 
+/* And for getitimer, setitimer and rusage  */
+#define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 1
+
 /* Number of descriptors that can fit in an `fd_set'.  */
 #define	__FD_SETSIZE		1024
 

sysdeps/unix/sysv/linux/generic/bits/typesizes.h

@@ -77,11 +77,17 @@
 
 /* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
 # define __STATFS_MATCHES_STATFS64  1
+
+/* And for getitimer, setitimer and rusage  */
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
 
 # define __STATFS_MATCHES_STATFS64  0
+
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 0
 #endif
+
 /* Number of descriptors that can fit in an `fd_set'.  */
 #define	__FD_SETSIZE		1024
 

sysdeps/unix/sysv/linux/s390/bits/typesizes.h

@@ -82,10 +82,16 @@
 
 /* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
 # define __STATFS_MATCHES_STATFS64  1
+
+/* And for getitimer, setitimer and rusage  */
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
 
 # define __STATFS_MATCHES_STATFS64  0
+
+/* And for getitimer, setitimer and rusage  */
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 0
 #endif
 
 /* Number of descriptors that can fit in an `fd_set'.  */

sysdeps/unix/sysv/linux/sparc/bits/typesizes.h

@@ -76,10 +76,16 @@
 
 /* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
 # define __STATFS_MATCHES_STATFS64  1
+
+/* And for getitimer, setitimer and rusage  */
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
 
 # define __STATFS_MATCHES_STATFS64  0
+
+/* And for getitimer, setitimer and rusage  */
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 0
 #endif
 
 /* Number of descriptors that can fit in an `fd_set'.  */

sysdeps/unix/sysv/linux/x86/bits/typesizes.h

@@ -88,10 +88,15 @@
 
 /* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
 # define __STATFS_MATCHES_STATFS64  1
+
+/* And for getitimer, setitimer and rusage  */
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
 
 # define __STATFS_MATCHES_STATFS64  0
+
+# define __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 0
 #endif
 
 /* Number of descriptors that can fit in an `fd_set'.  */