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7ce198e123
This patch provides new __clock_settime64 explicit 64 bit function for setting the time. Moreover, a 32 bit version - __clock_settime - has been refactored to internally use __clock_settime64. The __clock_settime is now supposed to be used on systems still supporting 32 bit time (__TIMESIZE != 64) - hence the necessary conversion to 64 bit struct timespec. The new clock_settime64 syscall available from Linux 5.1+ has been used, when applicable. In this patch the internal padding (tv_pad) of struct __timespec64 is left untouched (on systems with __WORDSIZE == 32) as Linux kernel ignores upper 32 bits of tv_nsec. Build tests: - The code has been tested on x86_64/x86 (native compilation): make PARALLELMFLAGS="-j8" && make xcheck PARALLELMFLAGS="-j8" - The glibc has been build tested (make PARALLELMFLAGS="-j8") for x86 (i386), x86_64-x32, and armv7 Run-time tests: - Run specific tests on ARM/x86 32bit systems (qemu): https://github.com/lmajewski/meta-y2038 and run tests: https://github.com/lmajewski/y2038-tests/commits/master - Use of cross-test-ssh.sh for ARM (armv7): make PARALLELMFLAGS="-j8" test-wrapper='./cross-test-ssh.sh root@192.168.7.2' xcheck Linux kernel, headers and minimal kernel version for glibc build test matrix: - Linux v5.1 (with clock_settime64) and glibc build with v5.1 as minimal kernel version (--enable-kernel="5.1.0") The __ASSUME_TIME64_SYSCALLS flag defined. - Linux v5.1 and default minimal kernel version The __ASSUME_TIME64_SYSCALLS not defined, but kernel supports __clock_settime64 syscalls. - Linux v4.19 (no clock_settime64 support) with default minimal kernel version for contemporary glibc This kernel doesn't support __clock_settime64 syscalls, so the fallback to clock_settime is tested. The above tests were performed with Y2038 redirection applied as well as without (so the __TIMESIZE != 64 execution path is checked as well). No regressions were observed. * include/time.h (__clock_settime64): Add __clock_settime alias according to __TIMESIZE define * sysdeps/unix/sysv/linux/clock_settime.c (__clock_settime): Refactor this function to be used only on 32 bit machines as a wrapper on __clock_settime64. * sysdeps/unix/sysv/linux/clock_settime.c (__clock_settime64): Add * sysdeps/unix/sysv/linux/clock_settime.c (__clock_settime64): Use clock_settime64 kernel syscall (available from 5.1+ Linux) |
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| .. | ||
| arpa | ||
| bits | ||
| gnu | ||
| net | ||
| netinet | ||
| programs | ||
| protocols | ||
| rpc | ||
| rpcsvc | ||
| sys | ||
| aio.h | ||
| aliases.h | ||
| alloc_buffer.h | ||
| alloca.h | ||
| allocate_once.h | ||
| ar.h | ||
| argp-fmtstream.h | ||
| argp.h | ||
| argz.h | ||
| array_length.h | ||
| assert.h | ||
| atomic.h | ||
| byteswap.h | ||
| complex.h | ||
| cpio.h | ||
| crypt.h | ||
| ctype.h | ||
| des.h | ||
| dirent.h | ||
| dlfcn.h | ||
| dso_handle.h | ||
| elf.h | ||
| endian.h | ||
| envz.h | ||
| err.h | ||
| errno.h | ||
| error.h | ||
| execinfo.h | ||
| fcntl.h | ||
| features.h | ||
| fenv.h | ||
| float.h | ||
| fmtmsg.h | ||
| fnmatch.h | ||
| fpu_control.h | ||
| fstab.h | ||
| fts.h | ||
| ftw.h | ||
| gconv.h | ||
| getopt_int.h | ||
| getopt.h | ||
| glob.h | ||
| gmp.h | ||
| gnu-versions.h | ||
| grp-merge.h | ||
| grp.h | ||
| gshadow.h | ||
| iconv.h | ||
| ifaddrs.h | ||
| ifreq.h | ||
| ifunc-impl-list.h | ||
| inline-hashtab.h | ||
| intprops.h | ||
| inttypes.h | ||
| langinfo.h | ||
| lastlog.h | ||
| libc-diag.h | ||
| libc-internal.h | ||
| libc-pointer-arith.h | ||
| libc-symbols.h | ||
| libgen.h | ||
| libintl.h | ||
| limits.h | ||
| link.h | ||
| list_t.h | ||
| list.h | ||
| locale.h | ||
| loop_unroll.h | ||
| malloc.h | ||
| math-narrow-eval.h | ||
| math.h | ||
| mcheck.h | ||
| memory.h | ||
| mntent.h | ||
| monetary.h | ||
| mqueue.h | ||
| netdb.h | ||
| netgroup.h | ||
| nl_types.h | ||
| nss.h | ||
| nsswitch.h | ||
| obstack.h | ||
| plural-exp.h | ||
| poll.h | ||
| printf.h | ||
| pthread.h | ||
| pty.h | ||
| pwd.h | ||
| random-bits.h | ||
| re_comp.h | ||
| regex.h | ||
| regexp.h | ||
| resolv.h | ||
| rounding-mode.h | ||
| sched.h | ||
| scratch_buffer.h | ||
| search.h | ||
| set-hooks.h | ||
| setjmp.h | ||
| sgtty.h | ||
| shadow.h | ||
| shlib-compat.h | ||
| signal.h | ||
| spawn.h | ||
| stab.h | ||
| stackinfo.h | ||
| stap-probe.h | ||
| stdc-predef.h | ||
| stdint.h | ||
| stdio_ext.h | ||
| stdio.h | ||
| stdlib.h | ||
| string.h | ||
| strings.h | ||
| stubs-prologue.h | ||
| syscall.h | ||
| sysexits.h | ||
| syslog.h | ||
| tar.h | ||
| termios.h | ||
| tgmath.h | ||
| time.h | ||
| ttyent.h | ||
| uchar.h | ||
| ucontext.h | ||
| ulimit.h | ||
| unistd.h | ||
| utime.h | ||
| utmp.h | ||
| values.h | ||
| verify.h | ||
| wait.h | ||
| wchar.h | ||
| wctype.h | ||
| wordexp.h | ||