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Re: bug#6331: [sshfs] df reports wrong disk space usage on solaris

From: Bruno Haible
Subject: Re: bug#6331: [sshfs] df reports wrong disk space usage on solaris
Date: Wed, 16 Jun 2010 12:42:45 +0200
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Hi Jim,

> However, I'm not sure it's portable enough.
> Do you know when the f_frsize member began to be useful?
> Without knowing that, I cannot judge whether this introduces
> a portability problem on older glibc, kernels or file systems.

There are also other platforms than glibc/Linux.

Upon inspection, it appears that the fu_cv_sys_stat_statfs2_bsize
test in m4/fsusage.m4 (labelled "AIX") would succeed on
  glibc, MacOS X, FreeBSD, NetBSD, OpenBSD, AIX, HP-UX, Solaris, Cygwin
and out of these, only
  glibc/Linux, glibc/Hurd, Solaris
do have an f_frsize member in 'struct statfs'.

But that test is preceded by the test for fu_cv_sys_stat_statvfs (labelled
"SVR4", which I would expect to succeed on
  glibc/Hurd, FreeBSD, NetBSD, AIX, HP-UX, IRIX, Solaris, Cygwin, Interix, BeOS

So it may be that actually only glibc/Linux platforms are affected by Miklos'
patch, but without a clear overview of which platform ends up using which code,
I can't assert this.


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