2 # Obtaining file system usage information.
4 # Copyright (C) 1997-1998, 2000-2001, 2003-2011 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])
24 # Try to determine how a program can obtain file system usage information.
25 # If successful, define the appropriate symbol (see fsusage.c) and
26 # execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND.
28 # gl_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
30 AC_DEFUN([gl_FILE_SYSTEM_USAGE],
33 AC_MSG_NOTICE([checking how to get file system space usage])
36 # Perform only the link test since it seems there are no variants of the
37 # statvfs function. This check is more than just AC_CHECK_FUNCS([statvfs])
38 # because that got a false positive on SCO OSR5. Adding the declaration
39 # of a `struct statvfs' causes this test to fail (as it should) on such
40 # systems. That system is reported to work fine with STAT_STATFS4 which
41 # is what it gets when this test fails.
42 if test $ac_fsusage_space = no; then
43 # glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0,
44 # OpenBSD >= 4.4, AIX, HP-UX, IRIX, Solaris, Cygwin, Interix, BeOS.
45 AC_CACHE_CHECK([for statvfs function (SVR4)], [fu_cv_sys_stat_statvfs],
46 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
47 #if (defined __GLIBC__ || defined __UCLIBC__) && defined __linux__
48 Do not use statvfs on systems with GNU libc on Linux, because that function
49 stats all preceding entries in /proc/mounts, and that makes df hang if even
50 one of the corresponding file systems is hard-mounted, but not available.
51 statvfs in GNU libc on Hurd, BeOS, Haiku operates differently: it only makes
56 "Do not use Tru64's statvfs implementation"
60 #include <sys/statvfs.h>
62 /* Reject implementations, such as MacOS X 10.7, where f_blocks is a
63 32-bit quantity; that commonly limits file systems to 4 TiB, a
64 ridiculously small limit these days. */
66 int check_f_blocks_size[sizeof fsd.f_blocks * CHAR_BIT <= 32 ? -1 : 1];
68 [[statvfs (0, &fsd);]])],
69 [fu_cv_sys_stat_statvfs=yes],
70 [fu_cv_sys_stat_statvfs=no])])
71 if test $fu_cv_sys_stat_statvfs = yes; then
73 AC_DEFINE([STAT_STATVFS], [1],
74 [ Define if there is a function named statvfs. (SVR4)])
78 if test $ac_fsusage_space = no; then
79 # DEC Alpha running OSF/1
80 AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
81 AC_CACHE_VAL([fu_cv_sys_stat_statfs3_osf1],
82 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
83 #include <sys/param.h>
84 #include <sys/types.h>
85 #include <sys/mount.h>
91 return statfs (".", &fsd, sizeof (struct statfs)) != 0;
93 [fu_cv_sys_stat_statfs3_osf1=yes],
94 [fu_cv_sys_stat_statfs3_osf1=no],
95 [fu_cv_sys_stat_statfs3_osf1=no])])
96 AC_MSG_RESULT([$fu_cv_sys_stat_statfs3_osf1])
97 if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
99 AC_DEFINE([STAT_STATFS3_OSF1], [1],
100 [ Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
104 if test $ac_fsusage_space = no; then
105 # glibc/Linux, MacOS X, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4.
106 # (glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0,
107 # OpenBSD >= 4.4, AIX, HP-UX, OSF/1, Cygwin already handled above.)
108 # (On IRIX you need to include <sys/statfs.h>, not only <sys/mount.h> and
110 # (On Solaris, statfs has 4 arguments.)
111 AC_MSG_CHECKING([for two-argument statfs with statfs.f_bsize dnl
112 member (AIX, 4.3BSD)])
113 AC_CACHE_VAL([fu_cv_sys_stat_statfs2_bsize],
114 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
115 #ifdef HAVE_SYS_PARAM_H
116 #include <sys/param.h>
118 #ifdef HAVE_SYS_MOUNT_H
119 #include <sys/mount.h>
121 #ifdef HAVE_SYS_VFS_H
129 return statfs (".", &fsd) != 0;
131 [fu_cv_sys_stat_statfs2_bsize=yes],
132 [fu_cv_sys_stat_statfs2_bsize=no],
133 [fu_cv_sys_stat_statfs2_bsize=no])])
134 AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_bsize])
135 if test $fu_cv_sys_stat_statfs2_bsize = yes; then
137 AC_DEFINE([STAT_STATFS2_BSIZE], [1],
138 [ Define if statfs takes 2 args and struct statfs has a field named f_bsize.
139 (4.3BSD, SunOS 4, HP-UX, AIX PS/2)])
143 if test $ac_fsusage_space = no; then
145 # (Solaris already handled above.)
146 AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)])
147 AC_CACHE_VAL([fu_cv_sys_stat_statfs4],
148 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
149 #include <sys/types.h>
150 #include <sys/statfs.h>
155 return statfs (".", &fsd, sizeof fsd, 0) != 0;
157 [fu_cv_sys_stat_statfs4=yes],
158 [fu_cv_sys_stat_statfs4=no],
159 [fu_cv_sys_stat_statfs4=no])])
160 AC_MSG_RESULT([$fu_cv_sys_stat_statfs4])
161 if test $fu_cv_sys_stat_statfs4 = yes; then
163 AC_DEFINE([STAT_STATFS4], [1],
164 [ Define if statfs takes 4 args. (SVR3, Dynix, old Irix, old AIX, Dolphin)])
168 if test $ac_fsusage_space = no; then
169 # 4.4BSD and older NetBSD
170 # (OSF/1 already handled above.)
171 # (On AIX, you need to include <sys/statfs.h>, not only <sys/mount.h>.)
172 # (On Solaris, statfs has 4 arguments and 'struct statfs' is not declared in
174 AC_MSG_CHECKING([for two-argument statfs with statfs.f_fsize dnl
175 member (4.4BSD and NetBSD)])
176 AC_CACHE_VAL([fu_cv_sys_stat_statfs2_fsize],
177 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
178 #include <sys/types.h>
179 #ifdef HAVE_SYS_PARAM_H
180 #include <sys/param.h>
182 #ifdef HAVE_SYS_MOUNT_H
183 #include <sys/mount.h>
190 return statfs (".", &fsd) != 0;
192 [fu_cv_sys_stat_statfs2_fsize=yes],
193 [fu_cv_sys_stat_statfs2_fsize=no],
194 [fu_cv_sys_stat_statfs2_fsize=no])])
195 AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_fsize])
196 if test $fu_cv_sys_stat_statfs2_fsize = yes; then
198 AC_DEFINE([STAT_STATFS2_FSIZE], [1],
199 [ Define if statfs takes 2 args and struct statfs has a field named f_fsize.
204 if test $ac_fsusage_space = no; then
206 AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)])
207 AC_CACHE_VAL([fu_cv_sys_stat_fs_data],
208 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
209 #include <sys/types.h>
210 #ifdef HAVE_SYS_PARAM_H
211 #include <sys/param.h>
213 #ifdef HAVE_SYS_MOUNT_H
214 #include <sys/mount.h>
216 #ifdef HAVE_SYS_FS_TYPES_H
217 #include <sys/fs_types.h>
223 /* Ultrix's statfs returns 1 for success,
224 0 for not mounted, -1 for failure. */
225 return statfs (".", &fsd) != 1;
227 [fu_cv_sys_stat_fs_data=yes],
228 [fu_cv_sys_stat_fs_data=no],
229 [fu_cv_sys_stat_fs_data=no])])
230 AC_MSG_RESULT([$fu_cv_sys_stat_fs_data])
231 if test $fu_cv_sys_stat_fs_data = yes; then
233 AC_DEFINE([STAT_STATFS2_FS_DATA], [1],
234 [ Define if statfs takes 2 args and the second argument has
235 type struct fs_data. (Ultrix)])
239 if test $ac_fsusage_space = no; then
241 # (AIX, HP-UX, OSF/1 already handled above.)
242 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <sys/filsys.h>
244 [AC_DEFINE([STAT_READ_FILSYS], [1],
245 [Define if there is no specific function for reading file systems usage
246 information and you have the <sys/filsys.h> header file. (SVR2)])
247 ac_fsusage_space=yes])
250 AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
255 # Check for SunOS statfs brokenness wrt partitions 2GB and larger.
256 # If <sys/vfs.h> exists and struct statfs has a member named f_spare,
257 # enable the work-around code in fsusage.c.
258 AC_DEFUN([gl_STATFS_TRUNCATES],
260 AC_MSG_CHECKING([for statfs that truncates block counts])
261 AC_CACHE_VAL([fu_cv_sys_truncating_statfs],
262 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
263 #if !defined(sun) && !defined(__sun)
264 choke -- this is a workaround for a Sun-specific problem
266 #include <sys/types.h>
267 #include <sys/vfs.h>]],
268 [[struct statfs t; long c = *(t.f_spare);
269 if (c) return 0;]])],
270 [fu_cv_sys_truncating_statfs=yes],
271 [fu_cv_sys_truncating_statfs=no])])
272 if test $fu_cv_sys_truncating_statfs = yes; then
273 AC_DEFINE([STATFS_TRUNCATES_BLOCK_COUNTS], [1],
274 [Define if the block counts reported by statfs may be truncated to 2GB
275 and the correct values may be stored in the f_spare array.
276 (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
277 SunOS 4.1.1 seems not to be affected.)])
279 AC_MSG_RESULT([$fu_cv_sys_truncating_statfs])
283 # Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE.
284 AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA],
286 AC_CHECK_HEADERS([dustat.h sys/fs/s5param.h sys/filsys.h sys/statfs.h])