2 # Obtaining file system usage information.
4 # Copyright (C) 1997, 1998, 2000, 2001, 2003, 2004, 2005, 2006 Free Software
7 # This file is free software; the Free Software Foundation
8 # gives unlimited permission to copy and/or distribute it,
9 # with or without modifications, as long as this notice is preserved.
11 # Written by Jim Meyering.
13 AC_DEFUN([gl_FSUSAGE],
15 AC_CHECK_HEADERS_ONCE(sys/param.h)
16 AC_CHECK_HEADERS_ONCE(sys/vfs.h sys/fs_types.h)
17 AC_CHECK_HEADERS(sys/mount.h, [], [],
20 #include <sys/param.h>
22 gl_FILE_SYSTEM_USAGE([gl_cv_fs_space=yes], [gl_cv_fs_space=no])
23 if test $gl_cv_fs_space = yes; then
25 gl_PREREQ_FSUSAGE_EXTRA
29 # Try to determine how a program can obtain file system usage information.
30 # If successful, define the appropriate symbol (see fsusage.c) and
31 # execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND.
33 # gl_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
35 AC_DEFUN([gl_FILE_SYSTEM_USAGE],
38 AC_MSG_NOTICE([checking how to get file system space usage])
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
49 AC_CACHE_CHECK([for statvfs function (SVR4)], fu_cv_sys_stat_statvfs,
50 [AC_TRY_LINK([#include <sys/types.h>
51 #if defined __GLIBC__ && !defined __BEOS__
52 Do not use statvfs on systems with GNU libc, because that function stats
53 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 BeOS operates differently: it only makes a system
58 #include <sys/statvfs.h>],
59 [struct statvfs fsd; statvfs (0, &fsd);],
60 fu_cv_sys_stat_statvfs=yes,
61 fu_cv_sys_stat_statvfs=no)])
62 if test $fu_cv_sys_stat_statvfs = yes; then
64 AC_DEFINE(STAT_STATVFS, 1,
65 [ Define if there is a function named statvfs. (SVR4)])
69 if test $ac_fsusage_space = no; then
70 # DEC Alpha running OSF/1
71 AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
72 AC_CACHE_VAL(fu_cv_sys_stat_statfs3_osf1,
74 #include <sys/param.h>
75 #include <sys/types.h>
76 #include <sys/mount.h>
82 return statfs (".", &fsd, sizeof (struct statfs)) != 0;
84 fu_cv_sys_stat_statfs3_osf1=yes,
85 fu_cv_sys_stat_statfs3_osf1=no,
86 fu_cv_sys_stat_statfs3_osf1=no)])
87 AC_MSG_RESULT($fu_cv_sys_stat_statfs3_osf1)
88 if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
90 AC_DEFINE(STAT_STATFS3_OSF1, 1,
91 [ Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
95 if test $ac_fsusage_space = no; then
97 AC_MSG_CHECKING([for two-argument statfs with statfs.bsize dnl
98 member (AIX, 4.3BSD)])
99 AC_CACHE_VAL(fu_cv_sys_stat_statfs2_bsize,
101 #ifdef HAVE_SYS_PARAM_H
102 #include <sys/param.h>
104 #ifdef HAVE_SYS_MOUNT_H
105 #include <sys/mount.h>
107 #ifdef HAVE_SYS_VFS_H
115 return statfs (".", &fsd) != 0;
117 fu_cv_sys_stat_statfs2_bsize=yes,
118 fu_cv_sys_stat_statfs2_bsize=no,
119 fu_cv_sys_stat_statfs2_bsize=no)])
120 AC_MSG_RESULT($fu_cv_sys_stat_statfs2_bsize)
121 if test $fu_cv_sys_stat_statfs2_bsize = yes; then
123 AC_DEFINE(STAT_STATFS2_BSIZE, 1,
124 [ Define if statfs takes 2 args and struct statfs has a field named f_bsize.
125 (4.3BSD, SunOS 4, HP-UX, AIX PS/2)])
129 if test $ac_fsusage_space = no; then
131 AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)])
132 AC_CACHE_VAL(fu_cv_sys_stat_statfs4,
133 [AC_TRY_RUN([#include <sys/types.h>
134 #include <sys/statfs.h>
139 return statfs (".", &fsd, sizeof fsd, 0) != 0;
141 fu_cv_sys_stat_statfs4=yes,
142 fu_cv_sys_stat_statfs4=no,
143 fu_cv_sys_stat_statfs4=no)])
144 AC_MSG_RESULT($fu_cv_sys_stat_statfs4)
145 if test $fu_cv_sys_stat_statfs4 = yes; then
147 AC_DEFINE(STAT_STATFS4, 1,
148 [ Define if statfs takes 4 args. (SVR3, Dynix, Irix, Dolphin)])
152 if test $ac_fsusage_space = no; then
154 AC_MSG_CHECKING([for two-argument statfs with statfs.fsize dnl
155 member (4.4BSD and NetBSD)])
156 AC_CACHE_VAL(fu_cv_sys_stat_statfs2_fsize,
157 [AC_TRY_RUN([#include <sys/types.h>
158 #ifdef HAVE_SYS_PARAM_H
159 #include <sys/param.h>
161 #ifdef HAVE_SYS_MOUNT_H
162 #include <sys/mount.h>
169 return statfs (".", &fsd) != 0;
171 fu_cv_sys_stat_statfs2_fsize=yes,
172 fu_cv_sys_stat_statfs2_fsize=no,
173 fu_cv_sys_stat_statfs2_fsize=no)])
174 AC_MSG_RESULT($fu_cv_sys_stat_statfs2_fsize)
175 if test $fu_cv_sys_stat_statfs2_fsize = yes; then
177 AC_DEFINE(STAT_STATFS2_FSIZE, 1,
178 [ Define if statfs takes 2 args and struct statfs has a field named f_fsize.
183 if test $ac_fsusage_space = no; then
185 AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)])
186 AC_CACHE_VAL(fu_cv_sys_stat_fs_data,
187 [AC_TRY_RUN([#include <sys/types.h>
188 #ifdef HAVE_SYS_PARAM_H
189 #include <sys/param.h>
191 #ifdef HAVE_SYS_MOUNT_H
192 #include <sys/mount.h>
194 #ifdef HAVE_SYS_FS_TYPES_H
195 #include <sys/fs_types.h>
201 /* Ultrix's statfs returns 1 for success,
202 0 for not mounted, -1 for failure. */
203 return statfs (".", &fsd) != 1;
205 fu_cv_sys_stat_fs_data=yes,
206 fu_cv_sys_stat_fs_data=no,
207 fu_cv_sys_stat_fs_data=no)])
208 AC_MSG_RESULT($fu_cv_sys_stat_fs_data)
209 if test $fu_cv_sys_stat_fs_data = yes; then
211 AC_DEFINE(STAT_STATFS2_FS_DATA, 1,
212 [ Define if statfs takes 2 args and the second argument has
213 type struct fs_data. (Ultrix)])
217 if test $ac_fsusage_space = no; then
219 AC_TRY_CPP([#include <sys/filsys.h>
221 AC_DEFINE(STAT_READ_FILSYS, 1,
222 [Define if there is no specific function for reading file systems usage
223 information and you have the <sys/filsys.h> header file. (SVR2)])
224 ac_fsusage_space=yes)
227 AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
232 # Check for SunOS statfs brokenness wrt partitions 2GB and larger.
233 # If <sys/vfs.h> exists and struct statfs has a member named f_spare,
234 # enable the work-around code in fsusage.c.
235 AC_DEFUN([gl_STATFS_TRUNCATES],
237 AC_MSG_CHECKING([for statfs that truncates block counts])
238 AC_CACHE_VAL(fu_cv_sys_truncating_statfs,
239 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
240 #if !defined(sun) && !defined(__sun)
241 choke -- this is a workaround for a Sun-specific problem
243 #include <sys/types.h>
244 #include <sys/vfs.h>]],
245 [[struct statfs t; long c = *(t.f_spare);
246 if (c) return 0;]])],
247 [fu_cv_sys_truncating_statfs=yes],
248 [fu_cv_sys_truncating_statfs=no])])
249 if test $fu_cv_sys_truncating_statfs = yes; then
250 AC_DEFINE(STATFS_TRUNCATES_BLOCK_COUNTS, 1,
251 [Define if the block counts reported by statfs may be truncated to 2GB
252 and the correct values may be stored in the f_spare array.
253 (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
254 SunOS 4.1.1 seems not to be affected.)])
256 AC_MSG_RESULT($fu_cv_sys_truncating_statfs)
260 # Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE.
261 AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA],
263 AC_CHECK_HEADERS(dustat.h sys/fs/s5param.h sys/filsys.h sys/statfs.h)