2 # Obtaining file system usage information.
4 # Copyright (C) 1997-1998, 2000-2001, 2003-2017 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],
32 dnl Enable large-file support. This has the effect of changing the size
33 dnl of field f_blocks in 'struct statvfs' from 32 bit to 64 bit on
34 dnl glibc/Hurd, HP-UX 11, Solaris (32-bit mode). It also changes the size
35 dnl of field f_blocks in 'struct statfs' from 32 bit to 64 bit on
36 dnl Mac OS X >= 10.5 (32-bit mode).
37 AC_REQUIRE([AC_SYS_LARGEFILE])
39 AC_MSG_CHECKING([how to get file system space usage])
42 # Perform only the link test since it seems there are no variants of the
43 # statvfs function. This check is more than just AC_CHECK_FUNCS([statvfs])
44 # because that got a false positive on SCO OSR5. Adding the declaration
45 # of a 'struct statvfs' causes this test to fail (as it should) on such
46 # systems. That system is reported to work fine with STAT_STATFS4 which
47 # is what it gets when this test fails.
48 if test $ac_fsusage_space = no; then
49 # glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0,
50 # OpenBSD >= 4.4, AIX, HP-UX, IRIX, Solaris, Cygwin, Interix, BeOS.
51 AC_CACHE_CHECK([for statvfs function (SVR4)], [fu_cv_sys_stat_statvfs],
52 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
54 "Do not use Tru64's statvfs implementation"
57 #include <sys/statvfs.h>
61 #if defined __APPLE__ && defined __MACH__
63 /* On Mac OS X >= 10.5, f_blocks in 'struct statvfs' is a 32-bit quantity;
64 that commonly limits file systems to 4 TiB. Whereas f_blocks in
65 'struct statfs' is a 64-bit type, thanks to the large-file support
66 that was enabled above. In this case, don't use statvfs(); use statfs()
68 int check_f_blocks_size[sizeof fsd.f_blocks * CHAR_BIT <= 32 ? -1 : 1];
71 [[statvfs (0, &fsd);]])],
72 [fu_cv_sys_stat_statvfs=yes],
73 [fu_cv_sys_stat_statvfs=no])])
74 if test $fu_cv_sys_stat_statvfs = yes; then
76 # AIX >= 5.2 has statvfs64 that has a wider f_blocks field than statvfs.
77 # glibc, HP-UX, IRIX, Solaris have statvfs64 as well, but on these systems
78 # statvfs with large-file support is already equivalent to statvfs64.
79 AC_CACHE_CHECK([whether to use statvfs64],
80 [fu_cv_sys_stat_statvfs64],
83 [[#include <sys/types.h>
84 #include <sys/statvfs.h>
86 int check_f_blocks_larger_in_statvfs64
87 [sizeof (((struct statvfs64 *) 0)->f_blocks)
88 > sizeof (((struct statvfs *) 0)->f_blocks)
91 [[statvfs64 (0, &fsd);]])],
92 [fu_cv_sys_stat_statvfs64=yes],
93 [fu_cv_sys_stat_statvfs64=no])
95 if test $fu_cv_sys_stat_statvfs64 = yes; then
96 AC_DEFINE([STAT_STATVFS64], [1],
97 [ Define if statvfs64 should be preferred over statvfs.])
99 AC_DEFINE([STAT_STATVFS], [1],
100 [ Define if there is a function named statvfs. (SVR4)])
105 # Check for this unconditionally so we have a
106 # good fallback on glibc/Linux > 2.6 < 2.6.36
107 AC_MSG_CHECKING([for two-argument statfs with statfs.f_frsize member])
108 AC_CACHE_VAL([fu_cv_sys_stat_statfs2_frsize],
109 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
110 #ifdef HAVE_SYS_PARAM_H
111 #include <sys/param.h>
113 #ifdef HAVE_SYS_MOUNT_H
114 #include <sys/mount.h>
116 #ifdef HAVE_SYS_VFS_H
124 return statfs (".", &fsd) != 0;
126 [fu_cv_sys_stat_statfs2_frsize=yes],
127 [fu_cv_sys_stat_statfs2_frsize=no],
128 [fu_cv_sys_stat_statfs2_frsize=no])])
129 AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_frsize])
130 if test $fu_cv_sys_stat_statfs2_frsize = yes; then
132 AC_DEFINE([STAT_STATFS2_FRSIZE], [1],
133 [ Define if statfs takes 2 args and struct statfs has a field named f_frsize.
134 (glibc/Linux > 2.6)])
137 if test $ac_fsusage_space = no; then
138 # DEC Alpha running OSF/1
139 AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
140 AC_CACHE_VAL([fu_cv_sys_stat_statfs3_osf1],
141 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
142 #include <sys/param.h>
143 #include <sys/types.h>
144 #include <sys/mount.h>
150 return statfs (".", &fsd, sizeof (struct statfs)) != 0;
152 [fu_cv_sys_stat_statfs3_osf1=yes],
153 [fu_cv_sys_stat_statfs3_osf1=no],
154 [fu_cv_sys_stat_statfs3_osf1=no])])
155 AC_MSG_RESULT([$fu_cv_sys_stat_statfs3_osf1])
156 if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
158 AC_DEFINE([STAT_STATFS3_OSF1], [1],
159 [ Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
163 if test $ac_fsusage_space = no; then
164 # glibc/Linux, Mac OS X, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4.
165 # (glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0,
166 # OpenBSD >= 4.4, AIX, HP-UX, OSF/1, Cygwin already handled above.)
167 # (On IRIX you need to include <sys/statfs.h>, not only <sys/mount.h> and
169 # (On Solaris, statfs has 4 arguments.)
170 AC_MSG_CHECKING([for two-argument statfs with statfs.f_bsize dnl
171 member (AIX, 4.3BSD)])
172 AC_CACHE_VAL([fu_cv_sys_stat_statfs2_bsize],
173 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
174 #ifdef HAVE_SYS_PARAM_H
175 #include <sys/param.h>
177 #ifdef HAVE_SYS_MOUNT_H
178 #include <sys/mount.h>
180 #ifdef HAVE_SYS_VFS_H
188 return statfs (".", &fsd) != 0;
190 [fu_cv_sys_stat_statfs2_bsize=yes],
191 [fu_cv_sys_stat_statfs2_bsize=no],
192 [fu_cv_sys_stat_statfs2_bsize=no])])
193 AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_bsize])
194 if test $fu_cv_sys_stat_statfs2_bsize = yes; then
196 AC_DEFINE([STAT_STATFS2_BSIZE], [1],
197 [ Define if statfs takes 2 args and struct statfs has a field named f_bsize.
198 (4.3BSD, SunOS 4, HP-UX, AIX PS/2)])
202 if test $ac_fsusage_space = no; then
204 # (Solaris already handled above.)
205 AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)])
206 AC_CACHE_VAL([fu_cv_sys_stat_statfs4],
207 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
208 #include <sys/types.h>
209 #include <sys/statfs.h>
214 return statfs (".", &fsd, sizeof fsd, 0) != 0;
216 [fu_cv_sys_stat_statfs4=yes],
217 [fu_cv_sys_stat_statfs4=no],
218 [fu_cv_sys_stat_statfs4=no])])
219 AC_MSG_RESULT([$fu_cv_sys_stat_statfs4])
220 if test $fu_cv_sys_stat_statfs4 = yes; then
222 AC_DEFINE([STAT_STATFS4], [1],
223 [ Define if statfs takes 4 args. (SVR3, Dynix, old Irix, old AIX, Dolphin)])
227 if test $ac_fsusage_space = no; then
228 # 4.4BSD and older NetBSD
229 # (OSF/1 already handled above.)
230 # (On AIX, you need to include <sys/statfs.h>, not only <sys/mount.h>.)
231 # (On Solaris, statfs has 4 arguments and 'struct statfs' is not declared in
233 AC_MSG_CHECKING([for two-argument statfs with statfs.f_fsize dnl
234 member (4.4BSD and NetBSD)])
235 AC_CACHE_VAL([fu_cv_sys_stat_statfs2_fsize],
236 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
237 #include <sys/types.h>
238 #ifdef HAVE_SYS_PARAM_H
239 #include <sys/param.h>
241 #ifdef HAVE_SYS_MOUNT_H
242 #include <sys/mount.h>
249 return statfs (".", &fsd) != 0;
251 [fu_cv_sys_stat_statfs2_fsize=yes],
252 [fu_cv_sys_stat_statfs2_fsize=no],
253 [fu_cv_sys_stat_statfs2_fsize=no])])
254 AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_fsize])
255 if test $fu_cv_sys_stat_statfs2_fsize = yes; then
257 AC_DEFINE([STAT_STATFS2_FSIZE], [1],
258 [ Define if statfs takes 2 args and struct statfs has a field named f_fsize.
263 if test $ac_fsusage_space = no; then
265 AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)])
266 AC_CACHE_VAL([fu_cv_sys_stat_fs_data],
267 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
268 #include <sys/types.h>
269 #ifdef HAVE_SYS_PARAM_H
270 #include <sys/param.h>
272 #ifdef HAVE_SYS_MOUNT_H
273 #include <sys/mount.h>
275 #ifdef HAVE_SYS_FS_TYPES_H
276 #include <sys/fs_types.h>
282 /* Ultrix's statfs returns 1 for success,
283 0 for not mounted, -1 for failure. */
284 return statfs (".", &fsd) != 1;
286 [fu_cv_sys_stat_fs_data=yes],
287 [fu_cv_sys_stat_fs_data=no],
288 [fu_cv_sys_stat_fs_data=no])])
289 AC_MSG_RESULT([$fu_cv_sys_stat_fs_data])
290 if test $fu_cv_sys_stat_fs_data = yes; then
292 AC_DEFINE([STAT_STATFS2_FS_DATA], [1],
293 [ Define if statfs takes 2 args and the second argument has
294 type struct fs_data. (Ultrix)])
298 AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
303 # Check for SunOS statfs brokenness wrt partitions 2GB and larger.
304 # If <sys/vfs.h> exists and struct statfs has a member named f_spare,
305 # enable the work-around code in fsusage.c.
306 AC_DEFUN([gl_STATFS_TRUNCATES],
308 AC_MSG_CHECKING([for statfs that truncates block counts])
309 AC_CACHE_VAL([fu_cv_sys_truncating_statfs],
310 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
311 #if !defined(sun) && !defined(__sun)
312 choke -- this is a workaround for a Sun-specific problem
314 #include <sys/types.h>
315 #include <sys/vfs.h>]],
316 [[struct statfs t; long c = *(t.f_spare);
317 if (c) return 0;]])],
318 [fu_cv_sys_truncating_statfs=yes],
319 [fu_cv_sys_truncating_statfs=no])])
320 if test $fu_cv_sys_truncating_statfs = yes; then
321 AC_DEFINE([STATFS_TRUNCATES_BLOCK_COUNTS], [1],
322 [Define if the block counts reported by statfs may be truncated to 2GB
323 and the correct values may be stored in the f_spare array.
324 (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
325 SunOS 4.1.1 seems not to be affected.)])
327 AC_MSG_RESULT([$fu_cv_sys_truncating_statfs])
331 # Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE.
332 AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA],
334 AC_CHECK_HEADERS([dustat.h sys/fs/s5param.h sys/statfs.h])