2 # Obtaining file system usage information.
4 # Copyright (C) 1997-1998, 2000-2001, 2003-2010 Free Software Foundation, Inc.
6 # This file is free software; the Free Software Foundation
7 # gives unlimited permission to copy and/or distribute it,
8 # with or without modifications, as long as this notice is preserved.
10 # Written by Jim Meyering.
12 AC_DEFUN([gl_FSUSAGE],
14 AC_CHECK_HEADERS_ONCE([sys/param.h])
15 AC_CHECK_HEADERS_ONCE([sys/vfs.h sys/fs_types.h])
16 AC_CHECK_HEADERS([sys/mount.h], [], [],
19 #include <sys/param.h>
21 gl_FILE_SYSTEM_USAGE([gl_cv_fs_space=yes], [gl_cv_fs_space=no])
22 if test $gl_cv_fs_space = yes; then
24 gl_PREREQ_FSUSAGE_EXTRA
28 # Try to determine how a program can obtain file system usage information.
29 # If successful, define the appropriate symbol (see fsusage.c) and
30 # execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND.
32 # gl_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
34 AC_DEFUN([gl_FILE_SYSTEM_USAGE],
37 AC_MSG_NOTICE([checking how to get file system space usage])
40 # Perform only the link test since it seems there are no variants of the
41 # statvfs function. This check is more than just AC_CHECK_FUNCS([statvfs])
42 # because that got a false positive on SCO OSR5. Adding the declaration
43 # of a `struct statvfs' causes this test to fail (as it should) on such
44 # systems. That system is reported to work fine with STAT_STATFS4 which
45 # is what it gets when this test fails.
46 if test $ac_fsusage_space = no; then
47 # glibc/{Hurd,kFreeBSD}, MacOS X >= 10.4, FreeBSD >= 5.0, NetBSD >= 3.0,
48 # OpenBSD >= 4.4, AIX, HP-UX, IRIX, Solaris, Cygwin, Interix, BeOS.
49 AC_CACHE_CHECK([for statvfs function (SVR4)], [fu_cv_sys_stat_statvfs],
50 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
51 #if defined __GLIBC__ && defined __linux__
52 Do not use statvfs on systems with GNU libc on Linux, because that function
53 stats all preceding entries in /proc/mounts, and that makes df hang if even
54 one of the corresponding file systems is hard-mounted, but not available.
55 statvfs in GNU libc on Hurd, BeOS, Haiku operates differently: it only makes
60 "Do not use Tru64's statvfs implementation"
63 #include <sys/statvfs.h>]],
64 [[struct statvfs fsd; statvfs (0, &fsd);]])],
65 [fu_cv_sys_stat_statvfs=yes],
66 [fu_cv_sys_stat_statvfs=no])])
67 if test $fu_cv_sys_stat_statvfs = yes; then
69 AC_DEFINE([STAT_STATVFS], [1],
70 [ Define if there is a function named statvfs. (SVR4)])
74 if test $ac_fsusage_space = no; then
75 # DEC Alpha running OSF/1
76 AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
77 AC_CACHE_VAL([fu_cv_sys_stat_statfs3_osf1],
78 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
79 #include <sys/param.h>
80 #include <sys/types.h>
81 #include <sys/mount.h>
87 return statfs (".", &fsd, sizeof (struct statfs)) != 0;
89 [fu_cv_sys_stat_statfs3_osf1=yes],
90 [fu_cv_sys_stat_statfs3_osf1=no],
91 [fu_cv_sys_stat_statfs3_osf1=no])])
92 AC_MSG_RESULT([$fu_cv_sys_stat_statfs3_osf1])
93 if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
95 AC_DEFINE([STAT_STATFS3_OSF1], [1],
96 [ Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
100 if test $ac_fsusage_space = no; then
101 # glibc/Linux, MacOS X < 10.4, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4.
102 # (glibc/{Hurd,kFreeBSD}, MacOS X >= 10.4, FreeBSD >= 5.0, NetBSD >= 3.0,
103 # OpenBSD >= 4.4, AIX, HP-UX, OSF/1, Cygwin already handled above.)
104 # (On IRIX you need to include <sys/statfs.h>, not only <sys/mount.h> and
106 # (On Solaris, statfs has 4 arguments.)
107 AC_MSG_CHECKING([for two-argument statfs with statfs.f_bsize dnl
108 member (AIX, 4.3BSD)])
109 AC_CACHE_VAL([fu_cv_sys_stat_statfs2_bsize],
110 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
111 #ifdef HAVE_SYS_PARAM_H
112 #include <sys/param.h>
114 #ifdef HAVE_SYS_MOUNT_H
115 #include <sys/mount.h>
117 #ifdef HAVE_SYS_VFS_H
125 return statfs (".", &fsd) != 0;
127 [fu_cv_sys_stat_statfs2_bsize=yes],
128 [fu_cv_sys_stat_statfs2_bsize=no],
129 [fu_cv_sys_stat_statfs2_bsize=no])])
130 AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_bsize])
131 if test $fu_cv_sys_stat_statfs2_bsize = yes; then
133 AC_DEFINE([STAT_STATFS2_BSIZE], [1],
134 [ Define if statfs takes 2 args and struct statfs has a field named f_bsize.
135 (4.3BSD, SunOS 4, HP-UX, AIX PS/2)])
139 if test $ac_fsusage_space = no; then
141 # (Solaris already handled above.)
142 AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)])
143 AC_CACHE_VAL([fu_cv_sys_stat_statfs4],
144 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
145 #include <sys/types.h>
146 #include <sys/statfs.h>
151 return statfs (".", &fsd, sizeof fsd, 0) != 0;
153 [fu_cv_sys_stat_statfs4=yes],
154 [fu_cv_sys_stat_statfs4=no],
155 [fu_cv_sys_stat_statfs4=no])])
156 AC_MSG_RESULT([$fu_cv_sys_stat_statfs4])
157 if test $fu_cv_sys_stat_statfs4 = yes; then
159 AC_DEFINE([STAT_STATFS4], [1],
160 [ Define if statfs takes 4 args. (SVR3, Dynix, old Irix, old AIX, Dolphin)])
164 if test $ac_fsusage_space = no; then
165 # 4.4BSD and older NetBSD
166 # (OSF/1 already handled above.)
167 # (On AIX, you need to include <sys/statfs.h>, not only <sys/mount.h>.)
168 # (On Solaris, statfs has 4 arguments and 'struct statfs' is not declared in
170 AC_MSG_CHECKING([for two-argument statfs with statfs.f_fsize dnl
171 member (4.4BSD and NetBSD)])
172 AC_CACHE_VAL([fu_cv_sys_stat_statfs2_fsize],
173 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
174 #include <sys/types.h>
175 #ifdef HAVE_SYS_PARAM_H
176 #include <sys/param.h>
178 #ifdef HAVE_SYS_MOUNT_H
179 #include <sys/mount.h>
186 return statfs (".", &fsd) != 0;
188 [fu_cv_sys_stat_statfs2_fsize=yes],
189 [fu_cv_sys_stat_statfs2_fsize=no],
190 [fu_cv_sys_stat_statfs2_fsize=no])])
191 AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_fsize])
192 if test $fu_cv_sys_stat_statfs2_fsize = yes; then
194 AC_DEFINE([STAT_STATFS2_FSIZE], [1],
195 [ Define if statfs takes 2 args and struct statfs has a field named f_fsize.
200 if test $ac_fsusage_space = no; then
202 AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)])
203 AC_CACHE_VAL([fu_cv_sys_stat_fs_data],
204 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
205 #include <sys/types.h>
206 #ifdef HAVE_SYS_PARAM_H
207 #include <sys/param.h>
209 #ifdef HAVE_SYS_MOUNT_H
210 #include <sys/mount.h>
212 #ifdef HAVE_SYS_FS_TYPES_H
213 #include <sys/fs_types.h>
219 /* Ultrix's statfs returns 1 for success,
220 0 for not mounted, -1 for failure. */
221 return statfs (".", &fsd) != 1;
223 [fu_cv_sys_stat_fs_data=yes],
224 [fu_cv_sys_stat_fs_data=no],
225 [fu_cv_sys_stat_fs_data=no])])
226 AC_MSG_RESULT([$fu_cv_sys_stat_fs_data])
227 if test $fu_cv_sys_stat_fs_data = yes; then
229 AC_DEFINE([STAT_STATFS2_FS_DATA], [1],
230 [ Define if statfs takes 2 args and the second argument has
231 type struct fs_data. (Ultrix)])
235 if test $ac_fsusage_space = no; then
237 # (AIX, HP-UX, OSF/1 already handled above.)
238 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <sys/filsys.h>
240 [AC_DEFINE([STAT_READ_FILSYS], [1],
241 [Define if there is no specific function for reading file systems usage
242 information and you have the <sys/filsys.h> header file. (SVR2)])
243 ac_fsusage_space=yes])
246 AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
251 # Check for SunOS statfs brokenness wrt partitions 2GB and larger.
252 # If <sys/vfs.h> exists and struct statfs has a member named f_spare,
253 # enable the work-around code in fsusage.c.
254 AC_DEFUN([gl_STATFS_TRUNCATES],
256 AC_MSG_CHECKING([for statfs that truncates block counts])
257 AC_CACHE_VAL([fu_cv_sys_truncating_statfs],
258 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
259 #if !defined(sun) && !defined(__sun)
260 choke -- this is a workaround for a Sun-specific problem
262 #include <sys/types.h>
263 #include <sys/vfs.h>]],
264 [[struct statfs t; long c = *(t.f_spare);
265 if (c) return 0;]])],
266 [fu_cv_sys_truncating_statfs=yes],
267 [fu_cv_sys_truncating_statfs=no])])
268 if test $fu_cv_sys_truncating_statfs = yes; then
269 AC_DEFINE([STATFS_TRUNCATES_BLOCK_COUNTS], [1],
270 [Define if the block counts reported by statfs may be truncated to 2GB
271 and the correct values may be stored in the f_spare array.
272 (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
273 SunOS 4.1.1 seems not to be affected.)])
275 AC_MSG_RESULT([$fu_cv_sys_truncating_statfs])
279 # Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE.
280 AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA],
282 AC_CHECK_HEADERS([dustat.h sys/fs/s5param.h sys/filsys.h sys/statfs.h])