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# fsusage.m4 serial 14
# Obtaining file system usage information.
# Copyright (C) 1997, 1998, 2000, 2001, 2003, 2004 Free Software
# Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# Written by Jim Meyering.
AC_DEFUN([gl_FSUSAGE],
[
AC_CHECK_HEADERS_ONCE(sys/param.h)
AC_CHECK_HEADERS_ONCE(sys/vfs.h sys/fs_types.h)
AC_CHECK_HEADERS(sys/mount.h, [], [],
[AC_INCLUDES_DEFAULT
[#if HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif]])
gl_FILE_SYSTEM_USAGE([gl_cv_fs_space=yes], [gl_cv_fs_space=no])
if test $gl_cv_fs_space = yes; then
AC_LIBOBJ(fsusage)
gl_PREREQ_FSUSAGE_EXTRA
fi
])
# Try to determine how a program can obtain file system usage information.
# If successful, define the appropriate symbol (see fsusage.c) and
# execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND.
#
# gl_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
AC_DEFUN([gl_FILE_SYSTEM_USAGE],
[
echo "checking how to get file system space usage..."
ac_fsusage_space=no
# Perform only the link test since it seems there are no variants of the
# statvfs function. This check is more than just AC_CHECK_FUNCS(statvfs)
# because that got a false positive on SCO OSR5. Adding the declaration
# of a `struct statvfs' causes this test to fail (as it should) on such
# systems. That system is reported to work fine with STAT_STATFS4 which
# is what it gets when this test fails.
if test $ac_fsusage_space = no; then
# SVR4
AC_CACHE_CHECK([for statvfs function (SVR4)], fu_cv_sys_stat_statvfs,
[AC_TRY_LINK([#include <sys/types.h>
#ifdef __GLIBC__
Do not use statvfs on systems with GNU libc, because that function stats
all preceding entries in /proc/mounts, and that makes df hang if even
one of the corresponding file systems is hard-mounted, but not available.
#endif
#include <sys/statvfs.h>],
[struct statvfs fsd; statvfs (0, &fsd);],
fu_cv_sys_stat_statvfs=yes,
fu_cv_sys_stat_statvfs=no)])
if test $fu_cv_sys_stat_statvfs = yes; then
ac_fsusage_space=yes
AC_DEFINE(STAT_STATVFS, 1,
[ Define if there is a function named statvfs. (SVR4)])
fi
fi
if test $ac_fsusage_space = no; then
# DEC Alpha running OSF/1
AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs3_osf1,
[AC_TRY_RUN([
#include <sys/param.h>
#include <sys/types.h>
#include <sys/mount.h>
main ()
{
struct statfs fsd;
fsd.f_fsize = 0;
exit (statfs (".", &fsd, sizeof (struct statfs)));
}],
fu_cv_sys_stat_statfs3_osf1=yes,
fu_cv_sys_stat_statfs3_osf1=no,
fu_cv_sys_stat_statfs3_osf1=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs3_osf1)
if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
ac_fsusage_space=yes
AC_DEFINE(STAT_STATFS3_OSF1, 1,
[ Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
fi
fi
if test $ac_fsusage_space = no; then
# AIX
AC_MSG_CHECKING([for two-argument statfs with statfs.bsize dnl
member (AIX, 4.3BSD)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs2_bsize,
[AC_TRY_RUN([
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
main ()
{
struct statfs fsd;
fsd.f_bsize = 0;
exit (statfs (".", &fsd));
}],
fu_cv_sys_stat_statfs2_bsize=yes,
fu_cv_sys_stat_statfs2_bsize=no,
fu_cv_sys_stat_statfs2_bsize=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs2_bsize)
if test $fu_cv_sys_stat_statfs2_bsize = yes; then
ac_fsusage_space=yes
AC_DEFINE(STAT_STATFS2_BSIZE, 1,
[ Define if statfs takes 2 args and struct statfs has a field named f_bsize.
(4.3BSD, SunOS 4, HP-UX, AIX PS/2)])
fi
fi
if test $ac_fsusage_space = no; then
# SVR3
AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs4,
[AC_TRY_RUN([#include <sys/types.h>
#include <sys/statfs.h>
main ()
{
struct statfs fsd;
exit (statfs (".", &fsd, sizeof fsd, 0));
}],
fu_cv_sys_stat_statfs4=yes,
fu_cv_sys_stat_statfs4=no,
fu_cv_sys_stat_statfs4=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs4)
if test $fu_cv_sys_stat_statfs4 = yes; then
ac_fsusage_space=yes
AC_DEFINE(STAT_STATFS4, 1,
[ Define if statfs takes 4 args. (SVR3, Dynix, Irix, Dolphin)])
fi
fi
if test $ac_fsusage_space = no; then
# 4.4BSD and NetBSD
AC_MSG_CHECKING([for two-argument statfs with statfs.fsize dnl
member (4.4BSD and NetBSD)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs2_fsize,
[AC_TRY_RUN([#include <sys/types.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
main ()
{
struct statfs fsd;
fsd.f_fsize = 0;
exit (statfs (".", &fsd));
}],
fu_cv_sys_stat_statfs2_fsize=yes,
fu_cv_sys_stat_statfs2_fsize=no,
fu_cv_sys_stat_statfs2_fsize=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs2_fsize)
if test $fu_cv_sys_stat_statfs2_fsize = yes; then
ac_fsusage_space=yes
AC_DEFINE(STAT_STATFS2_FSIZE, 1,
[ Define if statfs takes 2 args and struct statfs has a field named f_fsize.
(4.4BSD, NetBSD)])
fi
fi
if test $ac_fsusage_space = no; then
# Ultrix
AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)])
AC_CACHE_VAL(fu_cv_sys_stat_fs_data,
[AC_TRY_RUN([#include <sys/types.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_FS_TYPES_H
#include <sys/fs_types.h>
#endif
main ()
{
struct fs_data fsd;
/* Ultrix's statfs returns 1 for success,
0 for not mounted, -1 for failure. */
exit (statfs (".", &fsd) != 1);
}],
fu_cv_sys_stat_fs_data=yes,
fu_cv_sys_stat_fs_data=no,
fu_cv_sys_stat_fs_data=no)])
AC_MSG_RESULT($fu_cv_sys_stat_fs_data)
if test $fu_cv_sys_stat_fs_data = yes; then
ac_fsusage_space=yes
AC_DEFINE(STAT_STATFS2_FS_DATA, 1,
[ Define if statfs takes 2 args and the second argument has
type struct fs_data. (Ultrix)])
fi
fi
if test $ac_fsusage_space = no; then
# SVR2
AC_TRY_CPP([#include <sys/filsys.h>
],
AC_DEFINE(STAT_READ_FILSYS, 1,
[Define if there is no specific function for reading file systems usage
information and you have the <sys/filsys.h> header file. (SVR2)])
ac_fsusage_space=yes)
fi
AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
])
# Check for SunOS statfs brokenness wrt partitions 2GB and larger.
# If <sys/vfs.h> exists and struct statfs has a member named f_spare,
# enable the work-around code in fsusage.c.
AC_DEFUN([gl_STATFS_TRUNCATES],
[
AC_MSG_CHECKING([for statfs that truncates block counts])
AC_CACHE_VAL(fu_cv_sys_truncating_statfs,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#if !defined(sun) && !defined(__sun)
choke -- this is a workaround for a Sun-specific problem
#endif
#include <sys/types.h>
#include <sys/vfs.h>]],
[[struct statfs t; long c = *(t.f_spare);]])],
[fu_cv_sys_truncating_statfs=yes],
[fu_cv_sys_truncating_statfs=no])])
if test $fu_cv_sys_truncating_statfs = yes; then
AC_DEFINE(STATFS_TRUNCATES_BLOCK_COUNTS, 1,
[Define if the block counts reported by statfs may be truncated to 2GB
and the correct values may be stored in the f_spare array.
(SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
SunOS 4.1.1 seems not to be affected.)])
fi
AC_MSG_RESULT($fu_cv_sys_truncating_statfs)
])
# Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE.
AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA],
[
AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])
AC_CHECK_HEADERS_ONCE(fcntl.h)
AC_CHECK_HEADERS(dustat.h sys/fs/s5param.h sys/filsys.h sys/statfs.h sys/statvfs.h)
gl_STATFS_TRUNCATES
])
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