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linux/include/uapi/asm-generic
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Arnd Bergmann 0768e17073 net: socket: implement 64-bit timestamps 
The 'timeval' and 'timespec' data structures used for socket timestamps
are going to be redefined in user space based on 64-bit time_t in future
versions of the C library to deal with the y2038 overflow problem,
which breaks the ABI definition.

Unlike many modern ioctl commands, SIOCGSTAMP and SIOCGSTAMPNS do not
use the _IOR() macro to encode the size of the transferred data, so it
remains ambiguous whether the application uses the old or new layout.

The best workaround I could find is rather ugly: we redefine the command
code based on the size of the respective data structure with a ternary
operator. This lets it get evaluated as late as possible, hopefully after
that structure is visible to the caller. We cannot use an #ifdef here,
because inux/sockios.h might have been included before any libc header
that could determine the size of time_t.

The ioctl implementation now interprets the new command codes as always
referring to the 64-bit structure on all architectures, while the old
architecture specific command code still refers to the old architecture
specific layout. The new command number is only used when they are
actually different.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-19 14:07:40 -07:00
..
auxvec.h UAPI: (Scripted) Disintegrate include/asm-generic 2012-10-04 18:20:15 +01:00
bitsperlong.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
bpf_perf_event.h bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type 2017-12-05 15:02:40 +01:00
errno-base.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
errno.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
fcntl.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
hugetlb_encode.h mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes 2018-10-05 16:32:04 -07:00
int-l64.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
int-ll64.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
ioctl.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
ioctls.h tty/serial_core: add ISO7816 infrastructure 2018-10-02 13:38:55 -07:00
ipcbuf.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
Kbuild kbuild: force all architectures except um to include mandatory-y 2019-03-17 12:56:32 +09:00
kvm_para.h UAPI: Put a comment into uapi/asm-generic/kvm_para.h and use it from arches 2012-10-17 12:32:07 +01:00
mman-common.h arch: move common mmap flags to linux/mman.h 2019-02-18 17:49:30 +01:00
mman.h libnvdimm for 4.15 2017-11-17 09:51:57 -08:00
msgbuf.h y2038: asm-generic: Extend sysvipc data structures 2018-04-20 15:57:50 +02:00
param.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
poll.h unify {de,}mangle_poll(), get rid of kernel-side POLL... 2018-02-11 14:37:22 -08:00
posix_types.h time: Add new y2038 safe __kernel_timespec 2018-04-19 13:31:29 +02:00
resource.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
sembuf.h y2038: asm-generic: Extend sysvipc data structures 2018-04-20 15:57:50 +02:00
setup.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
shmbuf.h y2038: asm-generic: Extend sysvipc data structures 2018-04-20 15:57:50 +02:00
siginfo.h signal: Remove the need for __ARCH_SI_PREABLE_SIZE and SI_PAD_SIZE 2018-10-03 16:46:43 +02:00
signal-defs.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
signal.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
socket.h y2038: fix socket.h header inclusion 2019-03-11 11:06:00 -07:00
sockios.h net: socket: implement 64-bit timestamps 2019-04-19 14:07:40 -07:00
stat.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
statfs.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
swab.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
termbits.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
termios.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
types.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
ucontext.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
unistd.h pidfd patches for v5.1-rc1 2019-03-16 13:47:14 -07:00