From 1c634e677f584ea264f984eb408a5142150af855 Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Tue, 11 Feb 2020 12:56:50 -0800 Subject: 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 Reviewed-by: Adhemerval Zanella --- sysdeps/unix/sysv/linux/alpha/bits/typesizes.h | 3 +++ sysdeps/unix/sysv/linux/generic/bits/typesizes.h | 6 ++++++ sysdeps/unix/sysv/linux/s390/bits/typesizes.h | 6 ++++++ sysdeps/unix/sysv/linux/sparc/bits/typesizes.h | 6 ++++++ sysdeps/unix/sysv/linux/x86/bits/typesizes.h | 5 +++++ 5 files changed, 26 insertions(+) (limited to 'sysdeps/unix/sysv/linux') diff --git a/sysdeps/unix/sysv/linux/alpha/bits/typesizes.h b/sysdeps/unix/sysv/linux/alpha/bits/typesizes.h index 28ee3e5920..1d1fd242dc 100644 --- a/sysdeps/unix/sysv/linux/alpha/bits/typesizes.h +++ b/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 diff --git a/sysdeps/unix/sysv/linux/generic/bits/typesizes.h b/sysdeps/unix/sysv/linux/generic/bits/typesizes.h index 7c963e523e..4fb246ac74 100644 --- a/sysdeps/unix/sysv/linux/generic/bits/typesizes.h +++ b/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 diff --git a/sysdeps/unix/sysv/linux/s390/bits/typesizes.h b/sysdeps/unix/sysv/linux/s390/bits/typesizes.h index e775e460bb..2bc87c1079 100644 --- a/sysdeps/unix/sysv/linux/s390/bits/typesizes.h +++ b/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'. */ diff --git a/sysdeps/unix/sysv/linux/sparc/bits/typesizes.h b/sysdeps/unix/sysv/linux/sparc/bits/typesizes.h index ac48c23e37..288a902b5f 100644 --- a/sysdeps/unix/sysv/linux/sparc/bits/typesizes.h +++ b/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'. */ diff --git a/sysdeps/unix/sysv/linux/x86/bits/typesizes.h b/sysdeps/unix/sysv/linux/x86/bits/typesizes.h index 87c50a4f32..1bb4a1620c 100644 --- a/sysdeps/unix/sysv/linux/x86/bits/typesizes.h +++ b/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'. */ -- cgit 1.4.1