2 # Obtaining file system usage information.
4 # Copyright (C) 1997, 1998, 2000, 2001, 2003-2007 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_LIBSOURCES([fsusage.c, fsusage.h])
16 AC_CHECK_HEADERS_ONCE(sys/param.h)
17 AC_CHECK_HEADERS_ONCE(sys/vfs.h sys/fs_types.h)
18 AC_CHECK_HEADERS(sys/mount.h, [], [],
21 #include <sys/param.h>
23 gl_FILE_SYSTEM_USAGE([gl_cv_fs_space=yes], [gl_cv_fs_space=no])
24 if test $gl_cv_fs_space = yes; then
26 gl_PREREQ_FSUSAGE_EXTRA
30 # Try to determine how a program can obtain file system usage information.
31 # If successful, define the appropriate symbol (see fsusage.c) and
32 # execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND.
34 # gl_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
36 AC_DEFUN([gl_FILE_SYSTEM_USAGE],
39 AC_MSG_NOTICE([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
50 AC_CACHE_CHECK([for statvfs function (SVR4)], fu_cv_sys_stat_statvfs,
51 [AC_TRY_LINK([#include <sys/types.h>
52 #if defined __GLIBC__ && !defined __BEOS__
53 Do not use statvfs on systems with GNU libc, because that function stats
54 all preceding entries in /proc/mounts, and that makes df hang if even
55 one of the corresponding file systems is hard-mounted, but not available.
56 statvfs in GNU libc on BeOS operates differently: it only makes a system
61 "Do not use Tru64's statvfs implementation"
64 #include <sys/statvfs.h>],
65 [struct statvfs fsd; statvfs (0, &fsd);],
66 fu_cv_sys_stat_statvfs=yes,
67 fu_cv_sys_stat_statvfs=no)])
68 if test $fu_cv_sys_stat_statvfs = yes; then
70 AC_DEFINE(STAT_STATVFS, 1,
71 [ Define if there is a function named statvfs. (SVR4)])
75 if test $ac_fsusage_space = no; then
76 # DEC Alpha running OSF/1
77 AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
78 AC_CACHE_VAL(fu_cv_sys_stat_statfs3_osf1,
80 #include <sys/param.h>
81 #include <sys/types.h>
82 #include <sys/mount.h>
88 return statfs (".", &fsd, sizeof (struct statfs)) != 0;
90 fu_cv_sys_stat_statfs3_osf1=yes,
91 fu_cv_sys_stat_statfs3_osf1=no,
92 fu_cv_sys_stat_statfs3_osf1=no)])
93 AC_MSG_RESULT($fu_cv_sys_stat_statfs3_osf1)
94 if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
96 AC_DEFINE(STAT_STATFS3_OSF1, 1,
97 [ Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
101 if test $ac_fsusage_space = no; then
103 AC_MSG_CHECKING([for two-argument statfs with statfs.bsize dnl
104 member (AIX, 4.3BSD)])
105 AC_CACHE_VAL(fu_cv_sys_stat_statfs2_bsize,
107 #ifdef HAVE_SYS_PARAM_H
108 #include <sys/param.h>
110 #ifdef HAVE_SYS_MOUNT_H
111 #include <sys/mount.h>
113 #ifdef HAVE_SYS_VFS_H
121 return statfs (".", &fsd) != 0;
123 fu_cv_sys_stat_statfs2_bsize=yes,
124 fu_cv_sys_stat_statfs2_bsize=no,
125 fu_cv_sys_stat_statfs2_bsize=no)])
126 AC_MSG_RESULT($fu_cv_sys_stat_statfs2_bsize)
127 if test $fu_cv_sys_stat_statfs2_bsize = yes; then
129 AC_DEFINE(STAT_STATFS2_BSIZE, 1,
130 [ Define if statfs takes 2 args and struct statfs has a field named f_bsize.
131 (4.3BSD, SunOS 4, HP-UX, AIX PS/2)])
135 if test $ac_fsusage_space = no; then
137 AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)])
138 AC_CACHE_VAL(fu_cv_sys_stat_statfs4,
139 [AC_TRY_RUN([#include <sys/types.h>
140 #include <sys/statfs.h>
145 return statfs (".", &fsd, sizeof fsd, 0) != 0;
147 fu_cv_sys_stat_statfs4=yes,
148 fu_cv_sys_stat_statfs4=no,
149 fu_cv_sys_stat_statfs4=no)])
150 AC_MSG_RESULT($fu_cv_sys_stat_statfs4)
151 if test $fu_cv_sys_stat_statfs4 = yes; then
153 AC_DEFINE(STAT_STATFS4, 1,
154 [ Define if statfs takes 4 args. (SVR3, Dynix, Irix, Dolphin)])
158 if test $ac_fsusage_space = no; then
160 AC_MSG_CHECKING([for two-argument statfs with statfs.fsize dnl
161 member (4.4BSD and NetBSD)])
162 AC_CACHE_VAL(fu_cv_sys_stat_statfs2_fsize,
163 [AC_TRY_RUN([#include <sys/types.h>
164 #ifdef HAVE_SYS_PARAM_H
165 #include <sys/param.h>
167 #ifdef HAVE_SYS_MOUNT_H
168 #include <sys/mount.h>
175 return statfs (".", &fsd) != 0;
177 fu_cv_sys_stat_statfs2_fsize=yes,
178 fu_cv_sys_stat_statfs2_fsize=no,
179 fu_cv_sys_stat_statfs2_fsize=no)])
180 AC_MSG_RESULT($fu_cv_sys_stat_statfs2_fsize)
181 if test $fu_cv_sys_stat_statfs2_fsize = yes; then
183 AC_DEFINE(STAT_STATFS2_FSIZE, 1,
184 [ Define if statfs takes 2 args and struct statfs has a field named f_fsize.
189 if test $ac_fsusage_space = no; then
191 AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)])
192 AC_CACHE_VAL(fu_cv_sys_stat_fs_data,
193 [AC_TRY_RUN([#include <sys/types.h>
194 #ifdef HAVE_SYS_PARAM_H
195 #include <sys/param.h>
197 #ifdef HAVE_SYS_MOUNT_H
198 #include <sys/mount.h>
200 #ifdef HAVE_SYS_FS_TYPES_H
201 #include <sys/fs_types.h>
207 /* Ultrix's statfs returns 1 for success,
208 0 for not mounted, -1 for failure. */
209 return statfs (".", &fsd) != 1;
211 fu_cv_sys_stat_fs_data=yes,
212 fu_cv_sys_stat_fs_data=no,
213 fu_cv_sys_stat_fs_data=no)])
214 AC_MSG_RESULT($fu_cv_sys_stat_fs_data)
215 if test $fu_cv_sys_stat_fs_data = yes; then
217 AC_DEFINE(STAT_STATFS2_FS_DATA, 1,
218 [ Define if statfs takes 2 args and the second argument has
219 type struct fs_data. (Ultrix)])
223 if test $ac_fsusage_space = no; then
225 AC_TRY_CPP([#include <sys/filsys.h>
227 AC_DEFINE(STAT_READ_FILSYS, 1,
228 [Define if there is no specific function for reading file systems usage
229 information and you have the <sys/filsys.h> header file. (SVR2)])
230 ac_fsusage_space=yes)
233 AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
238 # Check for SunOS statfs brokenness wrt partitions 2GB and larger.
239 # If <sys/vfs.h> exists and struct statfs has a member named f_spare,
240 # enable the work-around code in fsusage.c.
241 AC_DEFUN([gl_STATFS_TRUNCATES],
243 AC_MSG_CHECKING([for statfs that truncates block counts])
244 AC_CACHE_VAL(fu_cv_sys_truncating_statfs,
245 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
246 #if !defined(sun) && !defined(__sun)
247 choke -- this is a workaround for a Sun-specific problem
249 #include <sys/types.h>
250 #include <sys/vfs.h>]],
251 [[struct statfs t; long c = *(t.f_spare);
252 if (c) return 0;]])],
253 [fu_cv_sys_truncating_statfs=yes],
254 [fu_cv_sys_truncating_statfs=no])])
255 if test $fu_cv_sys_truncating_statfs = yes; then
256 AC_DEFINE(STATFS_TRUNCATES_BLOCK_COUNTS, 1,
257 [Define if the block counts reported by statfs may be truncated to 2GB
258 and the correct values may be stored in the f_spare array.
259 (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
260 SunOS 4.1.1 seems not to be affected.)])
262 AC_MSG_RESULT($fu_cv_sys_truncating_statfs)
266 # Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE.
267 AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA],
269 AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])
270 AC_CHECK_HEADERS(dustat.h sys/fs/s5param.h sys/filsys.h sys/statfs.h)