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}, MacOS X >= 10.4, 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"
59 #include <sys/statvfs.h>]],
60 [[struct statvfs fsd; statvfs (0, &fsd);]])],
61 [fu_cv_sys_stat_statvfs=yes],
62 [fu_cv_sys_stat_statvfs=no])])
63 if test $fu_cv_sys_stat_statvfs = yes; then
65 AC_DEFINE([STAT_STATVFS], [1],
66 [ Define if there is a function named statvfs. (SVR4)])
70 if test $ac_fsusage_space = no; then
71 # DEC Alpha running OSF/1
72 AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
73 AC_CACHE_VAL([fu_cv_sys_stat_statfs3_osf1],
74 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
75 #include <sys/param.h>
76 #include <sys/types.h>
77 #include <sys/mount.h>
83 return statfs (".", &fsd, sizeof (struct statfs)) != 0;
85 [fu_cv_sys_stat_statfs3_osf1=yes],
86 [fu_cv_sys_stat_statfs3_osf1=no],
87 [fu_cv_sys_stat_statfs3_osf1=no])])
88 AC_MSG_RESULT([$fu_cv_sys_stat_statfs3_osf1])
89 if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
91 AC_DEFINE([STAT_STATFS3_OSF1], [1],
92 [ Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
96 if test $ac_fsusage_space = no; then
97 # glibc/Linux, MacOS X < 10.4, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4.
98 # (glibc/{Hurd,kFreeBSD}, MacOS X >= 10.4, FreeBSD >= 5.0, NetBSD >= 3.0,
99 # OpenBSD >= 4.4, AIX, HP-UX, OSF/1, Cygwin already handled above.)
100 # (On IRIX you need to include <sys/statfs.h>, not only <sys/mount.h> and
102 # (On Solaris, statfs has 4 arguments.)
103 AC_MSG_CHECKING([for two-argument statfs with statfs.f_bsize dnl
104 member (AIX, 4.3BSD)])
105 AC_CACHE_VAL([fu_cv_sys_stat_statfs2_bsize],
106 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
107 #ifdef HAVE_SYS_PARAM_H
108 #include <sys/param.h>
110 #ifdef HAVE_SYS_MOUNT_H
111 #include <sys/mount.h>
113 #ifdef HAVE_SYS_VFS_H
121 return statfs (".", &fsd) != 0;
123 [fu_cv_sys_stat_statfs2_bsize=yes],
124 [fu_cv_sys_stat_statfs2_bsize=no],
125 [fu_cv_sys_stat_statfs2_bsize=no])])
126 AC_MSG_RESULT([$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 $ac_fsusage_space = no; then
137 # (Solaris already handled above.)
138 AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)])
139 AC_CACHE_VAL([fu_cv_sys_stat_statfs4],
140 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
141 #include <sys/types.h>
142 #include <sys/statfs.h>
147 return statfs (".", &fsd, sizeof fsd, 0) != 0;
149 [fu_cv_sys_stat_statfs4=yes],
150 [fu_cv_sys_stat_statfs4=no],
151 [fu_cv_sys_stat_statfs4=no])])
152 AC_MSG_RESULT([$fu_cv_sys_stat_statfs4])
153 if test $fu_cv_sys_stat_statfs4 = yes; then
155 AC_DEFINE([STAT_STATFS4], [1],
156 [ Define if statfs takes 4 args. (SVR3, Dynix, old Irix, old AIX, Dolphin)])
160 if test $ac_fsusage_space = no; then
161 # 4.4BSD and older NetBSD
162 # (OSF/1 already handled above.)
163 # (On AIX, you need to include <sys/statfs.h>, not only <sys/mount.h>.)
164 # (On Solaris, statfs has 4 arguments and 'struct statfs' is not declared in
166 AC_MSG_CHECKING([for two-argument statfs with statfs.f_fsize dnl
167 member (4.4BSD and NetBSD)])
168 AC_CACHE_VAL([fu_cv_sys_stat_statfs2_fsize],
169 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
170 #include <sys/types.h>
171 #ifdef HAVE_SYS_PARAM_H
172 #include <sys/param.h>
174 #ifdef HAVE_SYS_MOUNT_H
175 #include <sys/mount.h>
182 return statfs (".", &fsd) != 0;
184 [fu_cv_sys_stat_statfs2_fsize=yes],
185 [fu_cv_sys_stat_statfs2_fsize=no],
186 [fu_cv_sys_stat_statfs2_fsize=no])])
187 AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_fsize])
188 if test $fu_cv_sys_stat_statfs2_fsize = yes; then
190 AC_DEFINE([STAT_STATFS2_FSIZE], [1],
191 [ Define if statfs takes 2 args and struct statfs has a field named f_fsize.
196 if test $ac_fsusage_space = no; then
198 AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)])
199 AC_CACHE_VAL([fu_cv_sys_stat_fs_data],
200 [AC_RUN_IFELSE([AC_LANG_SOURCE([[
201 #include <sys/types.h>
202 #ifdef HAVE_SYS_PARAM_H
203 #include <sys/param.h>
205 #ifdef HAVE_SYS_MOUNT_H
206 #include <sys/mount.h>
208 #ifdef HAVE_SYS_FS_TYPES_H
209 #include <sys/fs_types.h>
215 /* Ultrix's statfs returns 1 for success,
216 0 for not mounted, -1 for failure. */
217 return statfs (".", &fsd) != 1;
219 [fu_cv_sys_stat_fs_data=yes],
220 [fu_cv_sys_stat_fs_data=no],
221 [fu_cv_sys_stat_fs_data=no])])
222 AC_MSG_RESULT([$fu_cv_sys_stat_fs_data])
223 if test $fu_cv_sys_stat_fs_data = yes; then
225 AC_DEFINE([STAT_STATFS2_FS_DATA], [1],
226 [ Define if statfs takes 2 args and the second argument has
227 type struct fs_data. (Ultrix)])
231 if test $ac_fsusage_space = no; then
233 # (AIX, HP-UX, OSF/1 already handled above.)
234 AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <sys/filsys.h>
236 [AC_DEFINE([STAT_READ_FILSYS], [1],
237 [Define if there is no specific function for reading file systems usage
238 information and you have the <sys/filsys.h> header file. (SVR2)])
239 ac_fsusage_space=yes])
242 AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
247 # Check for SunOS statfs brokenness wrt partitions 2GB and larger.
248 # If <sys/vfs.h> exists and struct statfs has a member named f_spare,
249 # enable the work-around code in fsusage.c.
250 AC_DEFUN([gl_STATFS_TRUNCATES],
252 AC_MSG_CHECKING([for statfs that truncates block counts])
253 AC_CACHE_VAL([fu_cv_sys_truncating_statfs],
254 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
255 #if !defined(sun) && !defined(__sun)
256 choke -- this is a workaround for a Sun-specific problem
258 #include <sys/types.h>
259 #include <sys/vfs.h>]],
260 [[struct statfs t; long c = *(t.f_spare);
261 if (c) return 0;]])],
262 [fu_cv_sys_truncating_statfs=yes],
263 [fu_cv_sys_truncating_statfs=no])])
264 if test $fu_cv_sys_truncating_statfs = yes; then
265 AC_DEFINE([STATFS_TRUNCATES_BLOCK_COUNTS], [1],
266 [Define if the block counts reported by statfs may be truncated to 2GB
267 and the correct values may be stored in the f_spare array.
268 (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
269 SunOS 4.1.1 seems not to be affected.)])
271 AC_MSG_RESULT([$fu_cv_sys_truncating_statfs])
275 # Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE.
276 AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA],
278 AC_CHECK_HEADERS([dustat.h sys/fs/s5param.h sys/filsys.h sys/statfs.h])