1 #serial 20
2 # How to list mounted file systems.
4 # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
5 # Foundation, Inc.
6 #
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 dnl From Jim Meyering.
12 dnl
13 dnl This is not pretty. I've just taken the autoconf code and wrapped
14 dnl it in an AC_DEFUN and made some other fixes.
15 dnl
17 # Replace Autoconf's AC_FUNC_GETMNTENT to work around a bug in Autoconf
18 # through Autoconf 2.59. We can remove this once we assume Autoconf 2.60
19 # or later.
20 AC_DEFUN([AC_FUNC_GETMNTENT],
21 [# getmntent is in the standard C library on UNICOS, in -lsun on Irix 4,
22 # -lseq on Dynix/PTX, -lgen on Unixware.
23 AC_SEARCH_LIBS(getmntent, [sun seq gen], [AC_CHECK_FUNCS(getmntent)])
24 ])
26 # gl_LIST_MOUNTED_FILE_SYSTEMS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
27 AC_DEFUN([gl_LIST_MOUNTED_FILE_SYSTEMS],
28 [
29 AC_CHECK_FUNCS(listmntent getmntinfo)
30 AC_CHECK_HEADERS_ONCE(sys/param.h)
32 # We must include grp.h before ucred.h on OSF V4.0, since ucred.h uses
33 # NGROUPS (as the array dimension for a struct member) without a definition.
34 AC_CHECK_HEADERS(sys/ucred.h, [], [], [#include <grp.h>])
36 AC_CHECK_HEADERS(sys/mount.h, [], [],
37 [AC_INCLUDES_DEFAULT
38 [#if HAVE_SYS_PARAM_H
39 #include <sys/param.h>
40 #endif]])
42 AC_CHECK_HEADERS(mntent.h sys/fs_types.h)
43 getfsstat_includes="\
44 $ac_includes_default
45 #if HAVE_SYS_PARAM_H
46 # include <sys/param.h> /* needed by powerpc-apple-darwin1.3.7 */
47 #endif
48 #if HAVE_SYS_UCRED_H
49 # include <grp.h> /* needed for definition of NGROUPS */
50 # include <sys/ucred.h> /* needed by powerpc-apple-darwin1.3.7 */
51 #endif
52 #if HAVE_SYS_MOUNT_H
53 # include <sys/mount.h>
54 #endif
55 #if HAVE_SYS_FS_TYPES_H
56 # include <sys/fs_types.h> /* needed by powerpc-apple-darwin1.3.7 */
57 #endif
58 "
59 AC_CHECK_MEMBERS([struct fsstat.f_fstypename],,,[$getfsstat_includes])
61 # Determine how to get the list of mounted file systems.
62 ac_list_mounted_fs=
64 # If the getmntent function is available but not in the standard library,
65 # make sure LIBS contains the appropriate -l option.
66 AC_FUNC_GETMNTENT
68 # This test must precede the ones for getmntent because Unicos-9 is
69 # reported to have the getmntent function, but its support is incompatible
70 # with other getmntent implementations.
72 # NOTE: Normally, I wouldn't use a check for system type as I've done for
73 # `CRAY' below since that goes against the whole autoconf philosophy. But
74 # I think there is too great a chance that some non-Cray system has a
75 # function named listmntent to risk the false positive.
77 if test -z "$ac_list_mounted_fs"; then
78 # Cray UNICOS 9
79 AC_MSG_CHECKING([for listmntent of Cray/Unicos-9])
80 AC_CACHE_VAL(fu_cv_sys_mounted_cray_listmntent,
81 [fu_cv_sys_mounted_cray_listmntent=no
82 AC_EGREP_CPP(yes,
83 [#ifdef _CRAY
84 yes
85 #endif
86 ], [test $ac_cv_func_listmntent = yes \
87 && fu_cv_sys_mounted_cray_listmntent=yes]
88 )
89 ]
90 )
91 AC_MSG_RESULT($fu_cv_sys_mounted_cray_listmntent)
92 if test $fu_cv_sys_mounted_cray_listmntent = yes; then
93 ac_list_mounted_fs=found
94 AC_DEFINE(MOUNTED_LISTMNTENT, 1,
95 [Define if there is a function named listmntent that can be used to
96 list all mounted file systems. (UNICOS)])
97 fi
98 fi
100 if test -z "$ac_list_mounted_fs"; then
101 # AIX.
102 AC_MSG_CHECKING([for mntctl function and struct vmount])
103 AC_CACHE_VAL(fu_cv_sys_mounted_vmount,
104 [AC_TRY_CPP([#include <fshelp.h>],
105 fu_cv_sys_mounted_vmount=yes,
106 fu_cv_sys_mounted_vmount=no)])
107 AC_MSG_RESULT($fu_cv_sys_mounted_vmount)
108 if test $fu_cv_sys_mounted_vmount = yes; then
109 ac_list_mounted_fs=found
110 AC_DEFINE(MOUNTED_VMOUNT, 1,
111 [Define if there is a function named mntctl that can be used to read
112 the list of mounted file systems, and there is a system header file
113 that declares `struct vmount.' (AIX)])
114 fi
115 fi
117 if test $ac_cv_func_getmntent = yes; then
119 # This system has the getmntent function.
120 # Determine whether it's the one-argument variant or the two-argument one.
122 if test -z "$ac_list_mounted_fs"; then
123 # 4.3BSD, SunOS, HP-UX, Dynix, Irix
124 AC_MSG_CHECKING([for one-argument getmntent function])
125 AC_CACHE_VAL(fu_cv_sys_mounted_getmntent1,
126 [AC_TRY_COMPILE([
127 /* SunOS 4.1.x /usr/include/mntent.h needs this for FILE */
128 #include <stdio.h>
130 #include <mntent.h>
131 #if !defined MOUNTED
132 # if defined _PATH_MOUNTED /* GNU libc */
133 # define MOUNTED _PATH_MOUNTED
134 # endif
135 # if defined MNT_MNTTAB /* HP-UX. */
136 # define MOUNTED MNT_MNTTAB
137 # endif
138 # if defined MNTTABNAME /* Dynix. */
139 # define MOUNTED MNTTABNAME
140 # endif
141 #endif
142 ],
143 [ struct mntent *mnt = 0; char *table = MOUNTED; ],
144 fu_cv_sys_mounted_getmntent1=yes,
145 fu_cv_sys_mounted_getmntent1=no)])
146 AC_MSG_RESULT($fu_cv_sys_mounted_getmntent1)
147 if test $fu_cv_sys_mounted_getmntent1 = yes; then
148 ac_list_mounted_fs=found
149 AC_DEFINE(MOUNTED_GETMNTENT1, 1,
150 [Define if there is a function named getmntent for reading the list
151 of mounted file systems, and that function takes a single argument.
152 (4.3BSD, SunOS, HP-UX, Dynix, Irix)])
153 fi
154 fi
156 if test -z "$ac_list_mounted_fs"; then
157 # SVR4
158 AC_MSG_CHECKING([for two-argument getmntent function])
159 AC_CACHE_VAL(fu_cv_sys_mounted_getmntent2,
160 [AC_EGREP_HEADER(getmntent, sys/mnttab.h,
161 fu_cv_sys_mounted_getmntent2=yes,
162 fu_cv_sys_mounted_getmntent2=no)])
163 AC_MSG_RESULT($fu_cv_sys_mounted_getmntent2)
164 if test $fu_cv_sys_mounted_getmntent2 = yes; then
165 ac_list_mounted_fs=found
166 AC_DEFINE(MOUNTED_GETMNTENT2, 1,
167 [Define if there is a function named getmntent for reading the list of
168 mounted file systems, and that function takes two arguments. (SVR4)])
169 fi
170 fi
172 fi
174 if test -z "$ac_list_mounted_fs"; then
175 # DEC Alpha running OSF/1, and Apple Darwin 1.3.
176 # powerpc-apple-darwin1.3.7 needs sys/param.h sys/ucred.h sys/fs_types.h
178 AC_MSG_CHECKING([for getfsstat function])
179 AC_CACHE_VAL(fu_cv_sys_mounted_getfsstat,
180 [AC_TRY_LINK([
181 #include <sys/types.h>
182 #if HAVE_STRUCT_FSSTAT_F_FSTYPENAME
183 # define FS_TYPE(Ent) ((Ent).f_fstypename)
184 #else
185 # define FS_TYPE(Ent) mnt_names[(Ent).f_type]
186 #endif
187 ]$getfsstat_includes
188 ,
189 [struct statfs *stats;
190 int numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT);
191 char *t = FS_TYPE (*stats); ],
192 fu_cv_sys_mounted_getfsstat=yes,
193 fu_cv_sys_mounted_getfsstat=no)])
194 AC_MSG_RESULT($fu_cv_sys_mounted_getfsstat)
195 if test $fu_cv_sys_mounted_getfsstat = yes; then
196 ac_list_mounted_fs=found
197 AC_DEFINE(MOUNTED_GETFSSTAT, 1,
198 [Define if there is a function named getfsstat for reading the
199 list of mounted file systems. (DEC Alpha running OSF/1)])
200 fi
201 fi
203 if test -z "$ac_list_mounted_fs"; then
204 # SVR3
205 AC_MSG_CHECKING([for FIXME existence of three headers])
206 AC_CACHE_VAL(fu_cv_sys_mounted_fread_fstyp,
207 [AC_TRY_CPP([
208 #include <sys/statfs.h>
209 #include <sys/fstyp.h>
210 #include <mnttab.h>],
211 fu_cv_sys_mounted_fread_fstyp=yes,
212 fu_cv_sys_mounted_fread_fstyp=no)])
213 AC_MSG_RESULT($fu_cv_sys_mounted_fread_fstyp)
214 if test $fu_cv_sys_mounted_fread_fstyp = yes; then
215 ac_list_mounted_fs=found
216 AC_DEFINE(MOUNTED_FREAD_FSTYP, 1,
217 [Define if (like SVR2) there is no specific function for reading the
218 list of mounted file systems, and your system has these header files:
219 <sys/fstyp.h> and <sys/statfs.h>. (SVR3)])
220 fi
221 fi
223 if test -z "$ac_list_mounted_fs"; then
224 # 4.4BSD and DEC OSF/1.
225 AC_MSG_CHECKING([for getmntinfo function])
226 AC_CACHE_VAL(fu_cv_sys_mounted_getmntinfo,
227 [
228 test "$ac_cv_func_getmntinfo" = yes \
229 && fu_cv_sys_mounted_getmntinfo=yes \
230 || fu_cv_sys_mounted_getmntinfo=no
231 ])
232 AC_MSG_RESULT($fu_cv_sys_mounted_getmntinfo)
233 if test $fu_cv_sys_mounted_getmntinfo = yes; then
234 ac_list_mounted_fs=found
235 AC_DEFINE(MOUNTED_GETMNTINFO, 1,
236 [Define if there is a function named getmntinfo for reading the
237 list of mounted file systems. (4.4BSD, Darwin)])
238 fi
239 fi
241 if test -z "$ac_list_mounted_fs"; then
242 # Ultrix
243 AC_MSG_CHECKING([for getmnt function])
244 AC_CACHE_VAL(fu_cv_sys_mounted_getmnt,
245 [AC_TRY_CPP([
246 #include <sys/fs_types.h>
247 #include <sys/mount.h>],
248 fu_cv_sys_mounted_getmnt=yes,
249 fu_cv_sys_mounted_getmnt=no)])
250 AC_MSG_RESULT($fu_cv_sys_mounted_getmnt)
251 if test $fu_cv_sys_mounted_getmnt = yes; then
252 ac_list_mounted_fs=found
253 AC_DEFINE(MOUNTED_GETMNT, 1,
254 [Define if there is a function named getmnt for reading the list of
255 mounted file systems. (Ultrix)])
256 fi
257 fi
259 if test -z "$ac_list_mounted_fs"; then
260 # BeOS
261 AC_CHECK_FUNCS(next_dev fs_stat_dev)
262 AC_CHECK_HEADERS(fs_info.h)
263 AC_MSG_CHECKING([for BEOS mounted file system support functions])
264 if test $ac_cv_header_fs_info_h = yes \
265 && test $ac_cv_func_next_dev = yes \
266 && test $ac_cv_func_fs_stat_dev = yes; then
267 fu_result=yes
268 else
269 fu_result=no
270 fi
271 AC_MSG_RESULT($fu_result)
272 if test $fu_result = yes; then
273 ac_list_mounted_fs=found
274 AC_DEFINE(MOUNTED_FS_STAT_DEV, 1,
275 [Define if there are functions named next_dev and fs_stat_dev for
276 reading the list of mounted file systems. (BeOS)])
277 fi
278 fi
280 if test -z "$ac_list_mounted_fs"; then
281 # SVR2
282 AC_MSG_CHECKING([whether it is possible to resort to fread on /etc/mnttab])
283 AC_CACHE_VAL(fu_cv_sys_mounted_fread,
284 [AC_TRY_CPP([#include <mnttab.h>],
285 fu_cv_sys_mounted_fread=yes,
286 fu_cv_sys_mounted_fread=no)])
287 AC_MSG_RESULT($fu_cv_sys_mounted_fread)
288 if test $fu_cv_sys_mounted_fread = yes; then
289 ac_list_mounted_fs=found
290 AC_DEFINE(MOUNTED_FREAD, 1,
291 [Define if there is no specific function for reading the list of
292 mounted file systems. fread will be used to read /etc/mnttab.
293 (SVR2) ])
294 fi
295 fi
297 if test -z "$ac_list_mounted_fs"; then
298 AC_MSG_ERROR([could not determine how to read list of mounted file systems])
299 # FIXME -- no need to abort building the whole package
300 # Can't build mountlist.c or anything that needs its functions
301 fi
303 AS_IF([test $ac_list_mounted_fs = found], [$1], [$2])
305 ])