From: John Mudd <johnbmudd@gmail.com>
To: musl <musl@lists.openwall.com>
Cc: John Mudd <johnbmudd@gmail.com>
Subject: posix_fallocate() fails on some machines
Date: Thu, 26 Apr 2018 15:54:19 -0400 [thread overview]
Message-ID: <CAGDMk9Fo05xj-Wof6gj-hOO1fuRaQdfurpxguxYppF983mP_kQ@mail.gmail.com> (raw)
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I built a 32-bit dynamically linked Postgres using musl but I can't run on
some machines because posix_fallocate() returns 95, "not supported".
Here's a sample program that reproduces the issue even when compiled
statically. Any suggestions?
# Build a 32-bit static executable. Works.
$ cat test_posix_fallocate.c
#include <stdio.h>
#include <fcntl.h>
int main() {
int fd = open("foo", O_RDWR|O_CREAT, 0666);
if (fd < 0) return 1;
printf("posix_fallocate() returned %d\n", posix_fallocate(fd, 0,
400000));
}
$
$ uname -mrs
Linux 4.4.0-116-generic i686
$ musl-gcc -static -o test_posix_fallocate test_posix_fallocate.c
$ test_posix_fallocate
posix_fallocate() returned 0
$
# Copy it to an older OS. Fails.
$ uname -mrs
Linux 2.6.32-358.14.1.el6.x86_64 x86_64
$ test_posix_fallocate
posix_fallocate() returned 95
$
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next reply other threads:[~2018-04-26 19:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-26 19:54 John Mudd [this message]
2018-04-26 20:08 ` Rich Felker
2018-04-26 20:21 ` John Mudd
2018-04-26 20:52 ` Rich Felker
2018-04-27 20:01 ` John Mudd
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