[PATCH 0/6] Always use 32-bit time_t for certain syscalls

[Alistair Francis]

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.

This series adds 32-bit overrides for the specific syscalls that converts
between the Linux kernel's expected 32-bit time_t to the user expected 64-bit
time_t. This follows the standard y2038 conversion so that we don't break
backwards compatibility but we expose a 64-bit version for y2038 safe
architectrures (like RV32).

This series applies ontop of: https://patchwork.ozlabs.org/patch/1230878/

Alistair Francis (6):
  sysv/linux: Rename alpha functions to be alpha specific
  time: Add a timeval with a long tv_sec and tv_usec
  time: Add a __itimerval64 struct
  linux: Use 32-bit time_t for itimerval
  resource: Add a __rusage64 struct
  linux: Use 32-bit time_t for rusage

 include/sys/resource.h                        | 116 ++++++++++++++++++
 include/time.h                                |  66 ++++++++++
 sysdeps/unix/sysv/linux/alpha/osf_adjtime.c   |   8 +-
 sysdeps/unix/sysv/linux/alpha/osf_getitimer.c |   4 +-
 sysdeps/unix/sysv/linux/alpha/osf_getrusage.c |   2 +-
 .../unix/sysv/linux/alpha/osf_gettimeofday.c  |   2 +-
 sysdeps/unix/sysv/linux/alpha/osf_setitimer.c |   8 +-
 .../unix/sysv/linux/alpha/osf_settimeofday.c  |   2 +-
 sysdeps/unix/sysv/linux/alpha/osf_utimes.c    |   4 +-
 sysdeps/unix/sysv/linux/alpha/osf_wait4.c     |   2 +-
 sysdeps/unix/sysv/linux/alpha/tv32-compat.h   |  14 +--
 .../linux/generic/wordsize-32/getitimer.c     |  54 ++++++++
 .../linux/generic/wordsize-32/getrusage.c     |  52 ++++++++
 .../linux/generic/wordsize-32/setitimer.c     |  77 ++++++++++++
 .../linux/generic/wordsize-32/tv32-compat.h   |  82 +++++++++++++
 .../sysv/linux/generic/wordsize-32/wait4.c    |  83 +++++++++++++
 16 files changed, 553 insertions(+), 23 deletions(-)
 create mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/getitimer.c
 create mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/getrusage.c
 create mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/setitimer.c
 create mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/tv32-compat.h
 create mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/wait4.c

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2.25.0