Message ID | 20200210174325.6566-1-alistair.francis@wdc.com |
---|---|
Headers | show |
Series | Always use long time_t for certain syscalls | expand |
On Mon, Feb 10, 2020 at 9:50 AM Alistair Francis <alistair.francis@wdc.com> wrote: > > 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 converts getitimer, setitimer, getrusage and wait4 to be > both y2038 safe and always pass a long time_t. On 32 and 64-bit systems > we will pass a long time to the kernel (no matter the time_t size). This is > no change for 64-bit architectures or 32-bit architectures with a 32-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 was tested by running: ./scripts/build-many-glibcs.py ... compilers ./scripts/build-many-glibcs.py ... glibcs on my x86_64 machine. I also ran make check on RV32 and I only see a total of 10 test failures. > > 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 long time_t __getitimer/__setitimer > resource: Add a __rusage64 struct > linux: Use long time_t for wait4/getrusage > > include/sys/resource.h | 120 ++++++++++++++++++ > include/time.h | 64 ++++++++++ > .../{tv32-compat.h => alpha-tv32-compat.h} | 16 +-- > sysdeps/unix/sysv/linux/alpha/osf_adjtime.c | 10 +- > sysdeps/unix/sysv/linux/alpha/osf_getitimer.c | 6 +- > sysdeps/unix/sysv/linux/alpha/osf_getrusage.c | 4 +- > .../unix/sysv/linux/alpha/osf_gettimeofday.c | 4 +- > sysdeps/unix/sysv/linux/alpha/osf_setitimer.c | 10 +- > .../unix/sysv/linux/alpha/osf_settimeofday.c | 4 +- > sysdeps/unix/sysv/linux/alpha/osf_utimes.c | 6 +- > sysdeps/unix/sysv/linux/alpha/osf_wait4.c | 4 +- > sysdeps/unix/sysv/linux/getitimer.c | 54 ++++++++ > sysdeps/unix/sysv/linux/getrusage.c | 53 ++++++++ > sysdeps/unix/sysv/linux/setitimer.c | 89 +++++++++++++ > sysdeps/unix/sysv/linux/tv32-compat.h | 82 ++++++++++++ > sysdeps/unix/sysv/linux/wait4.c | 40 +++++- > 16 files changed, 530 insertions(+), 36 deletions(-) > rename sysdeps/unix/sysv/linux/alpha/{tv32-compat.h => alpha-tv32-compat.h} (88%) > create mode 100644 sysdeps/unix/sysv/linux/getitimer.c > create mode 100644 sysdeps/unix/sysv/linux/getrusage.c > create mode 100644 sysdeps/unix/sysv/linux/setitimer.c > create mode 100644 sysdeps/unix/sysv/linux/tv32-compat.h > > -- > 2.25.0 >