FreeBSD: Unable to locate posix_fadvise64 in libc. Leaving as a no-op.

[Mikolaj Golub]

Under FreeBSD warnings about missing posix_fadvise64 are observed:

  object-auditor STDOUT: WARNING:root:Unable to locate posix_fadvise64 in libc. Leaving as a no-op.

FreeBSD's libc does not provide posix_fadvise64. It is not needed here because off_t is 8 bytes on both 32 and 64-bit platforms (see the output below).

Could the swift be fixed to call posix_fadvise on FreeBSD instead of posix_fadvise64 (e.g. like in the attached patch)

Additional info about off_t size on FreeBSD i386:

root@ref9-i386:/tmp # uname -a
FreeBSD ref9-i386 9.1-STABLE FreeBSD 9.1-STABLE #4 r250376M: Wed May 8 21:50:09 EEST 2013 <email address hidden>:/home/obj/i386.i386/home/golub/freebsd/base/stable/9/sys/VIMAGE i386
root@ref9-i386:/tmp # man posix_fadvise | head -14
POSIX_FADVISE(2) FreeBSD System Calls Manual POSIX_FADVISE(2)

NAME
     posix_fadvise -- give advice about use of file data

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <fcntl.h>

     int
     posix_fadvise(int fd, off_t offset, off_t len, int advice);

root@ref9-i386:/tmp # cat test_off.c
#include <sys/types.h>

#include <stdio.h>

int
main()
{
        printf("sizeof(off_t) = %zu\n", sizeof(off_t));
        return (0);
}

root@ref9-i386:/tmp # gcc test_off.c
root@ref9-i386:/tmp # ./a.out
sizeof(off_t) = 8

[John Dickinson (notmyname)]

Mikolaj, is this still an issue in Swift? If so, can you propose your patch to gerrit for review and inclusion in Swift?

[Launchpad Janitor (janitor)]

[Expired for OpenStack Object Storage (swift) because there has been no activity for 60 days.]

[Alistair King (alistairking)]

I can confirm this is still an issue on FreeBSD (10.1), and that the suggested patch fixes the problem.

[Donny Davis (donny-g)]

Still relevant on Freebsd 12 and patch still works