2 # Obtaining file system usage information.
4 # Copyright (C) 1997-1998, 2000-2001, 2003-2020 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])
41 # Perform only the link test since it seems there are no variants of the
42 # statvfs function. This check is more than just AC_CHECK_FUNCS([statvfs])
43 # because that got a false positive on SCO OSR5. Adding the declaration
44 # of a 'struct statvfs' causes this test to fail (as it should) on such
45 # systems. That system is reported to work fine with STAT_STATFS4 which
46 # is what it gets when this test fails.
47 if test $ac_fsusage_space = no; then
48 # glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0,
49 # OpenBSD >= 4.4, AIX, HP-UX, IRIX, Solaris, Cygwin, Interix, BeOS.
50 AC_CACHE_CHECK([for statvfs function (SVR4)],
51 [fu_cv_sys_stat_statvfs],
54 #include <sys/types.h>
56 "Do not use Tru64's statvfs implementation"
59 #include <sys/statvfs.h>
63 #if defined __APPLE__ && defined __MACH__
65 /* On Mac OS X >= 10.5, f_blocks in 'struct statvfs' is a 32-bit quantity;
66 that commonly limits file systems to 4 TiB. Whereas f_blocks in
67 'struct statfs' is a 64-bit type, thanks to the large-file support
68 that was enabled above. In this case, don't use statvfs(); use statfs()
70 int check_f_blocks_size[sizeof fsd.f_blocks * CHAR_BIT <= 32 ? -1 : 1];
73 [[statvfs (0, &fsd);]])],
74 [fu_cv_sys_stat_statvfs=yes],
75 [fu_cv_sys_stat_statvfs=no])
77 if test $fu_cv_sys_stat_statvfs = yes; then
79 # AIX >= 5.2 has statvfs64 that has a wider f_blocks field than statvfs.
80 # glibc, HP-UX, IRIX, Solaris have statvfs64 as well, but on these systems
81 # statvfs with large-file support is already equivalent to statvfs64.
82 AC_CACHE_CHECK([whether to use statvfs64],
83 [fu_cv_sys_stat_statvfs64],
86 [[#include <sys/types.h>
87 #include <sys/statvfs.h>
89 int check_f_blocks_larger_in_statvfs64
90 [sizeof (((struct statvfs64 *) 0)->f_blocks)
91 > sizeof (((struct statvfs *) 0)->f_blocks)
94 [[statvfs64 (0, &fsd);]])],
95 [fu_cv_sys_stat_statvfs64=yes],
96 [fu_cv_sys_stat_statvfs64=no])
98 if test $fu_cv_sys_stat_statvfs64 = yes; then
99 AC_DEFINE([STAT_STATVFS64], [1],
100 [Define if statvfs64 should be preferred over statvfs.])
102 AC_DEFINE([STAT_STATVFS], [1],
103 [Define if there is a function named statvfs. (SVR4)])
108 # Check for this unconditionally so we have a
109 # good fallback on glibc/Linux > 2.6 < 2.6.36
110 AC_CACHE_CHECK([for two-argument statfs with statfs.f_frsize member],
111 [fu_cv_sys_stat_statfs2_frsize],
114 #ifdef HAVE_SYS_PARAM_H
115 #include <sys/param.h>
117 #ifdef HAVE_SYS_MOUNT_H
118 #include <sys/mount.h>
120 #ifdef HAVE_SYS_VFS_H
128 return statfs (".", &fsd) != 0;
130 [fu_cv_sys_stat_statfs2_frsize=yes],
131 [fu_cv_sys_stat_statfs2_frsize=no],
132 [fu_cv_sys_stat_statfs2_frsize=no])
134 if test $fu_cv_sys_stat_statfs2_frsize = yes; then
136 AC_DEFINE([STAT_STATFS2_FRSIZE], [1],
137 [Define if statfs takes 2 args and struct statfs has a field named f_frsize.
138 (glibc/Linux > 2.6)])
141 if test $ac_fsusage_space = no; then
142 # DEC Alpha running OSF/1
143 AC_CACHE_CHECK([for 3-argument statfs function (DEC OSF/1)],
144 [fu_cv_sys_stat_statfs3_osf1],
145 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
146 #include <sys/param.h>
147 #include <sys/types.h>
148 #include <sys/mount.h>
154 return statfs (".", &fsd, sizeof (struct statfs)) != 0;
156 [fu_cv_sys_stat_statfs3_osf1=yes],
157 [fu_cv_sys_stat_statfs3_osf1=no],
158 [fu_cv_sys_stat_statfs3_osf1=no])
160 if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
162 AC_DEFINE([STAT_STATFS3_OSF1], [1],
163 [Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
167 if test $ac_fsusage_space = no; then
168 # glibc/Linux, Mac OS X, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4.
169 # (glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0,
170 # OpenBSD >= 4.4, AIX, HP-UX, OSF/1, Cygwin already handled above.)
171 # (On IRIX you need to include <sys/statfs.h>, not only <sys/mount.h> and
173 # (On Solaris, statfs has 4 arguments.)
174 AC_CACHE_CHECK([for two-argument statfs with statfs.f_bsize member (AIX, 4.3BSD)],
175 [fu_cv_sys_stat_statfs2_bsize],
176 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
177 #ifdef HAVE_SYS_PARAM_H
178 #include <sys/param.h>
180 #ifdef HAVE_SYS_MOUNT_H
181 #include <sys/mount.h>
183 #ifdef HAVE_SYS_VFS_H
191 return statfs (".", &fsd) != 0;
193 [fu_cv_sys_stat_statfs2_bsize=yes],
194 [fu_cv_sys_stat_statfs2_bsize=no],
195 [fu_cv_sys_stat_statfs2_bsize=no])
197 if test $fu_cv_sys_stat_statfs2_bsize = yes; then
199 AC_DEFINE([STAT_STATFS2_BSIZE], [1],
200 [Define if statfs takes 2 args and struct statfs has a field named f_bsize.
201 (4.3BSD, SunOS 4, HP-UX)])
205 if test $ac_fsusage_space = no; then
207 # (Solaris already handled above.)
208 AC_CACHE_CHECK([for four-argument statfs (SVR3)],
209 [fu_cv_sys_stat_statfs4],
210 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
211 #include <sys/types.h>
212 #include <sys/statfs.h>
217 return statfs (".", &fsd, sizeof fsd, 0) != 0;
219 [fu_cv_sys_stat_statfs4=yes],
220 [fu_cv_sys_stat_statfs4=no],
221 [fu_cv_sys_stat_statfs4=no])
223 if test $fu_cv_sys_stat_statfs4 = yes; then
225 AC_DEFINE([STAT_STATFS4], [1],
226 [Define if statfs takes 4 args. (SVR3, old Irix)])
230 if test $ac_fsusage_space = no; then
231 # 4.4BSD and older NetBSD
232 # (OSF/1 already handled above.)
233 # (On AIX, you need to include <sys/statfs.h>, not only <sys/mount.h>.)
234 # (On Solaris, statfs has 4 arguments and 'struct statfs' is not declared in
236 AC_CACHE_CHECK([for two-argument statfs with statfs.f_fsize member (4.4BSD and NetBSD)],
237 [fu_cv_sys_stat_statfs2_fsize],
238 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
239 #include <sys/types.h>
240 #ifdef HAVE_SYS_PARAM_H
241 #include <sys/param.h>
243 #ifdef HAVE_SYS_MOUNT_H
244 #include <sys/mount.h>
251 return statfs (".", &fsd) != 0;
253 [fu_cv_sys_stat_statfs2_fsize=yes],
254 [fu_cv_sys_stat_statfs2_fsize=no],
255 [fu_cv_sys_stat_statfs2_fsize=no])
257 if test $fu_cv_sys_stat_statfs2_fsize = yes; then
259 AC_DEFINE([STAT_STATFS2_FSIZE], [1],
260 [Define if statfs takes 2 args and struct statfs has a field named f_fsize.
265 AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
270 # Check for SunOS statfs brokenness wrt partitions 2GB and larger.
271 # If <sys/vfs.h> exists and struct statfs has a member named f_spare,
272 # enable the work-around code in fsusage.c.
273 AC_DEFUN([gl_STATFS_TRUNCATES],
275 AC_CACHE_CHECK([for statfs that truncates block counts],
276 [fu_cv_sys_truncating_statfs],
279 #if !defined(sun) && !defined(__sun)
280 choke -- this is a workaround for a Sun-specific problem
282 #include <sys/types.h>
285 [[struct statfs t; long c = *(t.f_spare);
288 [fu_cv_sys_truncating_statfs=yes],
289 [fu_cv_sys_truncating_statfs=no])
291 if test $fu_cv_sys_truncating_statfs = yes; then
292 AC_DEFINE([STATFS_TRUNCATES_BLOCK_COUNTS], [1],
293 [Define if the block counts reported by statfs may be truncated to 2GB
294 and the correct values may be stored in the f_spare array.
295 (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
296 SunOS 4.1.1 seems not to be affected.)])
301 # Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE.
302 AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA],
304 AC_CHECK_HEADERS([sys/fs/s5param.h sys/statfs.h])