-# serial 27
+# serial 30
# Obtaining file system usage information.
-# Copyright (C) 1997-1998, 2000-2001, 2003-2011 Free Software Foundation, Inc.
+# Copyright (C) 1997-1998, 2000-2001, 2003-2014 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
#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.
AC_DEFUN([gl_FILE_SYSTEM_USAGE],
[
+dnl Enable large-file support. This has the effect of changing the size
+dnl of field f_blocks in 'struct statvfs' from 32 bit to 64 bit on
+dnl glibc/Hurd, HP-UX 11, Solaris (32-bit mode). It also changes the size
+dnl of field f_blocks in 'struct statfs' from 32 bit to 64 bit on
+dnl Mac OS X >= 10.5 (32-bit mode).
+AC_REQUIRE([AC_SYS_LARGEFILE])
AC_MSG_NOTICE([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
+# 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
- # glibc/{Hurd,kFreeBSD}, MacOS X >= 10.4, FreeBSD >= 5.0, NetBSD >= 3.0,
+ # glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0,
# OpenBSD >= 4.4, AIX, HP-UX, IRIX, Solaris, Cygwin, Interix, BeOS.
AC_CACHE_CHECK([for statvfs function (SVR4)], [fu_cv_sys_stat_statvfs],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
-#if (defined __GLIBC__ || defined __UCLIBC__) && defined __linux__
-Do not use statvfs on systems with GNU libc on Linux, 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.
-statvfs in GNU libc on Hurd, BeOS, Haiku operates differently: it only makes
-a system call.
-#endif
-
#ifdef __osf__
"Do not use Tru64's statvfs implementation"
#endif
-#include <sys/statvfs.h>]],
- [[struct statvfs fsd; statvfs (0, &fsd);]])],
+#include <sys/statvfs.h>
+
+struct statvfs fsd;
+
+#if defined __APPLE__ && defined __MACH__
+#include <limits.h>
+/* On Mac OS X >= 10.5, f_blocks in 'struct statvfs' is a 32-bit quantity;
+ that commonly limits file systems to 4 TiB. Whereas f_blocks in
+ 'struct statfs' is a 64-bit type, thanks to the large-file support
+ that was enabled above. In this case, don't use statvfs(); use statfs()
+ instead. */
+int check_f_blocks_size[sizeof fsd.f_blocks * CHAR_BIT <= 32 ? -1 : 1];
+#endif
+]],
+ [[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)])
+ # AIX >= 5.2 has statvfs64 that has a wider f_blocks field than statvfs.
+ # glibc, HP-UX, IRIX, Solaris have statvfs64 as well, but on these systems
+ # statvfs with large-file support is already equivalent to statvfs64.
+ AC_CACHE_CHECK([whether to use statvfs64],
+ [fu_cv_sys_stat_statvfs64],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <sys/types.h>
+ #include <sys/statvfs.h>
+ struct statvfs64 fsd;
+ int check_f_blocks_larger_in_statvfs64
+ [sizeof (((struct statvfs64 *) 0)->f_blocks)
+ > sizeof (((struct statvfs *) 0)->f_blocks)
+ ? 1 : -1];
+ ]],
+ [[statvfs64 (0, &fsd);]])],
+ [fu_cv_sys_stat_statvfs64=yes],
+ [fu_cv_sys_stat_statvfs64=no])
+ ])
+ if test $fu_cv_sys_stat_statvfs64 = yes; then
+ AC_DEFINE([STAT_STATVFS64], [1],
+ [ Define if statvfs64 should be preferred over statvfs.])
+ else
+ AC_DEFINE([STAT_STATVFS], [1],
+ [ Define if there is a function named statvfs. (SVR4)])
+ fi
fi
fi
+# Check for this unconditionally so we have a
+# good fallback on glibc/Linux > 2.6 < 2.6.36
+AC_MSG_CHECKING([for two-argument statfs with statfs.f_frsize member])
+AC_CACHE_VAL([fu_cv_sys_stat_statfs2_frsize],
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+#ifdef HAVE_SYS_MOUNT_H
+#include <sys/mount.h>
+#endif
+#ifdef HAVE_SYS_VFS_H
+#include <sys/vfs.h>
+#endif
+ int
+ main ()
+ {
+ struct statfs fsd;
+ fsd.f_frsize = 0;
+ return statfs (".", &fsd) != 0;
+ }]])],
+ [fu_cv_sys_stat_statfs2_frsize=yes],
+ [fu_cv_sys_stat_statfs2_frsize=no],
+ [fu_cv_sys_stat_statfs2_frsize=no])])
+AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_frsize])
+if test $fu_cv_sys_stat_statfs2_frsize = yes; then
+ ac_fsusage_space=yes
+ AC_DEFINE([STAT_STATFS2_FRSIZE], [1],
+[ Define if statfs takes 2 args and struct statfs has a field named f_frsize.
+ (glibc/Linux > 2.6)])
+fi
+
if test $ac_fsusage_space = no; then
# DEC Alpha running OSF/1
AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
fi
if test $ac_fsusage_space = no; then
- # glibc/Linux, MacOS X < 10.4, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4.
- # (glibc/{Hurd,kFreeBSD}, MacOS X >= 10.4, FreeBSD >= 5.0, NetBSD >= 3.0,
+ # glibc/Linux, Mac OS X, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4.
+ # (glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0,
# OpenBSD >= 4.4, AIX, HP-UX, OSF/1, Cygwin already handled above.)
# (On IRIX you need to include <sys/statfs.h>, not only <sys/mount.h> and
# <sys/vfs.h>.)
projects / gnulib.git / blobdiff