[PATCH 0/3] stat syscall family: support modern 32-bit ABI requirements

[Yury Norov]

In modern APIs stat and statfs structures has their layouts identical
to 64-bit version after changing off_t, ino_t etc sizes to 64-bit.
It means we can pass it to kernel same way as 64-bit ABI does. The only
exception is time_t-related fields. It can be handled by introducing
pads where needed.

Patch 1 is helper for patch 2 that does all the work by introducing paddings
where needed in structures stat and statfs. Patch 3 enables new ABI for
aarch64/ilp32 and should be applied with the rest of ilp32 series:
https://github.com/norov/glibc/tree/ilp32-2.24

Yury Norov (3):
  endian.h: introduce __type3264() macro
  32-bit ABIs: support stat syscall family
  [AARCH64] ILP32: redirect stat syscall family to 64-bit handlers

 string/endian.h                                    | 12 +++++
 sysdeps/unix/sysv/linux/aarch64/bits/typesizes.h   |  6 +++
 sysdeps/unix/sysv/linux/aarch64/ilp32/fstatfs64.c  | 35 +++++++++++++
 sysdeps/unix/sysv/linux/aarch64/ilp32/statfs64.c   | 38 ++++++++++++++
 sysdeps/unix/sysv/linux/fstatfs64.c                |  7 +++
 sysdeps/unix/sysv/linux/fxstat64.c                 | 11 ++++
 sysdeps/unix/sysv/linux/fxstatat64.c               | 15 +++++-
 sysdeps/unix/sysv/linux/generic/bits/stat.h        | 58 ++++++++++++++++------
 sysdeps/unix/sysv/linux/generic/bits/statfs.h      | 40 +++++++--------
 .../unix/sysv/linux/generic/wordsize-32/fstatfs.c  |  3 ++
 .../unix/sysv/linux/generic/wordsize-32/fxstat.c   |  3 ++
 .../unix/sysv/linux/generic/wordsize-32/fxstatat.c |  2 +
 .../unix/sysv/linux/generic/wordsize-32/lxstat.c   |  2 +
 .../unix/sysv/linux/generic/wordsize-32/lxstat64.c | 20 +++++++-
 .../unix/sysv/linux/generic/wordsize-32/statfs.c   |  2 +
 .../unix/sysv/linux/generic/wordsize-32/xstat.c    |  2 +
 .../unix/sysv/linux/generic/wordsize-32/xstat64.c  | 16 +++++-
 sysdeps/unix/sysv/linux/kernel-time.h              | 45 +++++++++++++++++
 sysdeps/unix/sysv/linux/statfs64.c                 |  8 +++
 time/time.h                                        | 12 ++++-
 20 files changed, 298 insertions(+), 39 deletions(-)
 create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/fstatfs64.c
 create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/statfs64.c
 create mode 100644 sysdeps/unix/sysv/linux/kernel-time.h

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2.7.4