-#serial 2
+#serial 21
+# Obtaining file system usage information.
-# From fileutils/configure.in
+# Copyright (C) 1997, 1998, 2000, 2001, 2003, 2004, 2005, 2006 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.
-# Try to determine how a program can obtain filesystem usage information.
+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.
#
-# jm_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+# gl_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-AC_DEFUN(jm_FILE_SYSTEM_USAGE,
+AC_DEFUN([gl_FILE_SYSTEM_USAGE],
[
-AC_MSG_CHECKING(how to get filesystem space usage)
+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
# SVR4
AC_CACHE_CHECK([for statvfs function (SVR4)], fu_cv_sys_stat_statvfs,
[AC_TRY_LINK([#include <sys/types.h>
+#if defined __GLIBC__ && !defined __BEOS__
+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.
+statvfs in GNU libc on BeOS operates differently: it only makes a system
+call.
+#endif
#include <sys/statvfs.h>],
[struct statvfs fsd; statvfs (0, &fsd);],
fu_cv_sys_stat_statvfs=yes,
#include <sys/param.h>
#include <sys/types.h>
#include <sys/mount.h>
+ int
main ()
{
struct statfs fsd;
fsd.f_fsize = 0;
- exit (statfs (".", &fsd, sizeof (struct statfs)));
+ return statfs (".", &fsd, sizeof (struct statfs)) != 0;
}],
fu_cv_sys_stat_statfs3_osf1=yes,
fu_cv_sys_stat_statfs3_osf1=no,
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
+ int
main ()
{
struct statfs fsd;
fsd.f_bsize = 0;
- exit (statfs (".", &fsd));
+ return statfs (".", &fsd) != 0;
}],
fu_cv_sys_stat_statfs2_bsize=yes,
fu_cv_sys_stat_statfs2_bsize=no,
AC_CACHE_VAL(fu_cv_sys_stat_statfs4,
[AC_TRY_RUN([#include <sys/types.h>
#include <sys/statfs.h>
+ int
main ()
{
struct statfs fsd;
- exit (statfs (".", &fsd, sizeof fsd, 0));
+ return statfs (".", &fsd, sizeof fsd, 0) != 0;
}],
fu_cv_sys_stat_statfs4=yes,
fu_cv_sys_stat_statfs4=no,
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
+ int
main ()
{
struct statfs fsd;
fsd.f_fsize = 0;
- exit (statfs (".", &fsd));
+ return statfs (".", &fsd) != 0;
}],
fu_cv_sys_stat_statfs2_fsize=yes,
fu_cv_sys_stat_statfs2_fsize=no,
#ifdef HAVE_SYS_FS_TYPES_H
#include <sys/fs_types.h>
#endif
+ int
main ()
{
struct fs_data fsd;
/* Ultrix's statfs returns 1 for success,
0 for not mounted, -1 for failure. */
- exit (statfs (".", &fsd) != 1);
+ return statfs (".", &fsd) != 1;
}],
fu_cv_sys_stat_fs_data=yes,
fu_cv_sys_stat_fs_data=no,
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 filesystems usage
- information and you have the <sys/filsys.h> header file. (SVR2)])
- ac_fsusage_space=yes)
+ # 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
-AC_SHELL_IFELSE([test $ac_fsusage_space = yes], [$1], [$2])dnl
+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_CHECK_HEADERS(dustat.h sys/fs/s5param.h sys/filsys.h sys/statfs.h)
+ gl_STATFS_TRUNCATES
])
projects / gnulib.git / blobdiff