| 1 | #serial 26
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| 2 | # How to list mounted file systems.
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| 3 |
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| 4 | # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006 Free Software
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| 5 | # Foundation, Inc.
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| 6 | #
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| 7 | # This file is free software; the Free Software Foundation
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| 8 | # gives unlimited permission to copy and/or distribute it,
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| 9 | # with or without modifications, as long as this notice is preserved.
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| 10 |
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| 11 | dnl From Jim Meyering.
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| 12 | dnl
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| 13 | dnl This is not pretty. I've just taken the autoconf code and wrapped
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| 14 | dnl it in an AC_DEFUN and made some other fixes.
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| 15 | dnl
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| 16 |
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| 17 | # Replace Autoconf's AC_FUNC_GETMNTENT to work around a bug in Autoconf
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| 18 | # through Autoconf 2.59. We can remove this once we assume Autoconf 2.60
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| 19 | # or later.
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| 20 | AC_DEFUN([AC_FUNC_GETMNTENT],
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| 21 | [# getmntent is in the standard C library on UNICOS, in -lsun on Irix 4,
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| 22 | # -lseq on Dynix/PTX, -lgen on Unixware.
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| 23 | AC_SEARCH_LIBS(getmntent, [sun seq gen])
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| 24 | AC_CHECK_FUNCS(getmntent)
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| 25 | ])
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| 26 |
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| 27 | # gl_LIST_MOUNTED_FILE_SYSTEMS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
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| 28 | AC_DEFUN([gl_LIST_MOUNTED_FILE_SYSTEMS],
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| 29 | [
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| 30 | AC_CHECK_FUNCS(listmntent getmntinfo)
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| 31 | AC_CHECK_HEADERS_ONCE(sys/param.h sys/statvfs.h)
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| 32 |
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| 33 | # We must include grp.h before ucred.h on OSF V4.0, since ucred.h uses
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| 34 | # NGROUPS (as the array dimension for a struct member) without a definition.
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| 35 | AC_CHECK_HEADERS(sys/ucred.h, [], [], [#include <grp.h>])
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| 36 |
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| 37 | AC_CHECK_HEADERS(sys/mount.h, [], [],
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| 38 | [AC_INCLUDES_DEFAULT
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| 39 | [#if HAVE_SYS_PARAM_H
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| 40 | #include <sys/param.h>
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| 41 | #endif]])
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| 42 |
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| 43 | AC_CHECK_HEADERS(mntent.h sys/fs_types.h)
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| 44 | getfsstat_includes="\
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| 45 | $ac_includes_default
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| 46 | #if HAVE_SYS_PARAM_H
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| 47 | # include <sys/param.h> /* needed by powerpc-apple-darwin1.3.7 */
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| 48 | #endif
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| 49 | #if HAVE_SYS_UCRED_H
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| 50 | # include <grp.h> /* needed for definition of NGROUPS */
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| 51 | # include <sys/ucred.h> /* needed by powerpc-apple-darwin1.3.7 */
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| 52 | #endif
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| 53 | #if HAVE_SYS_MOUNT_H
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| 54 | # include <sys/mount.h>
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| 55 | #endif
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| 56 | #if HAVE_SYS_FS_TYPES_H
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| 57 | # include <sys/fs_types.h> /* needed by powerpc-apple-darwin1.3.7 */
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| 58 | #endif
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| 59 | "
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| 60 | AC_CHECK_MEMBERS([struct fsstat.f_fstypename],,,[$getfsstat_includes])
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| 61 |
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| 62 | # Determine how to get the list of mounted file systems.
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| 63 | ac_list_mounted_fs=
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| 64 |
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| 65 | # If the getmntent function is available but not in the standard library,
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| 66 | # make sure LIBS contains the appropriate -l option.
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| 67 | AC_FUNC_GETMNTENT
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| 68 |
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| 69 | # This test must precede the ones for getmntent because Unicos-9 is
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| 70 | # reported to have the getmntent function, but its support is incompatible
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| 71 | # with other getmntent implementations.
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| 72 |
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| 73 | # NOTE: Normally, I wouldn't use a check for system type as I've done for
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| 74 | # `CRAY' below since that goes against the whole autoconf philosophy. But
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| 75 | # I think there is too great a chance that some non-Cray system has a
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| 76 | # function named listmntent to risk the false positive.
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| 77 |
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| 78 | if test -z "$ac_list_mounted_fs"; then
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| 79 | # Cray UNICOS 9
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| 80 | AC_MSG_CHECKING([for listmntent of Cray/Unicos-9])
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| 81 | AC_CACHE_VAL(fu_cv_sys_mounted_cray_listmntent,
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| 82 | [fu_cv_sys_mounted_cray_listmntent=no
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| 83 | AC_EGREP_CPP(yes,
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| 84 | [#ifdef _CRAY
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| 85 | yes
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| 86 | #endif
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| 87 | ], [test $ac_cv_func_listmntent = yes \
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| 88 | && fu_cv_sys_mounted_cray_listmntent=yes]
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| 89 | )
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| 90 | ]
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| 91 | )
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| 92 | AC_MSG_RESULT($fu_cv_sys_mounted_cray_listmntent)
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| 93 | if test $fu_cv_sys_mounted_cray_listmntent = yes; then
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| 94 | ac_list_mounted_fs=found
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| 95 | AC_DEFINE(MOUNTED_LISTMNTENT, 1,
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| 96 | [Define if there is a function named listmntent that can be used to
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| 97 | list all mounted file systems. (UNICOS)])
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| 98 | fi
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| 99 | fi
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| 100 |
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| 101 | if test -z "$ac_list_mounted_fs"; then
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| 102 | # AIX.
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| 103 | AC_MSG_CHECKING([for mntctl function and struct vmount])
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| 104 | AC_CACHE_VAL(fu_cv_sys_mounted_vmount,
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| 105 | [AC_TRY_CPP([#include <fshelp.h>],
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| 106 | fu_cv_sys_mounted_vmount=yes,
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| 107 | fu_cv_sys_mounted_vmount=no)])
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| 108 | AC_MSG_RESULT($fu_cv_sys_mounted_vmount)
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| 109 | if test $fu_cv_sys_mounted_vmount = yes; then
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| 110 | ac_list_mounted_fs=found
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| 111 | AC_DEFINE(MOUNTED_VMOUNT, 1,
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| 112 | [Define if there is a function named mntctl that can be used to read
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| 113 | the list of mounted file systems, and there is a system header file
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| 114 | that declares `struct vmount.' (AIX)])
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| 115 | fi
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| 116 | fi
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| 117 |
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| 118 | if test $ac_cv_func_getmntent = yes; then
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| 119 |
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| 120 | # This system has the getmntent function.
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| 121 | # Determine whether it's the one-argument variant or the two-argument one.
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| 122 |
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| 123 | if test -z "$ac_list_mounted_fs"; then
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| 124 | # 4.3BSD, SunOS, HP-UX, Dynix, Irix
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| 125 | AC_MSG_CHECKING([for one-argument getmntent function])
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| 126 | AC_CACHE_VAL(fu_cv_sys_mounted_getmntent1,
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| 127 | [AC_TRY_COMPILE([
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| 128 | /* SunOS 4.1.x /usr/include/mntent.h needs this for FILE */
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| 129 | #include <stdio.h>
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| 130 |
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| 131 | #include <mntent.h>
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| 132 | #if !defined MOUNTED
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| 133 | # if defined _PATH_MOUNTED /* GNU libc */
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| 134 | # define MOUNTED _PATH_MOUNTED
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| 135 | # endif
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| 136 | # if defined MNT_MNTTAB /* HP-UX. */
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| 137 | # define MOUNTED MNT_MNTTAB
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| 138 | # endif
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| 139 | # if defined MNTTABNAME /* Dynix. */
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| 140 | # define MOUNTED MNTTABNAME
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| 141 | # endif
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| 142 | #endif
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| 143 | ],
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| 144 | [ struct mntent *mnt = 0; char *table = MOUNTED;
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| 145 | if (sizeof mnt && sizeof table) return 0;],
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| 146 | fu_cv_sys_mounted_getmntent1=yes,
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| 147 | fu_cv_sys_mounted_getmntent1=no)])
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| 148 | AC_MSG_RESULT($fu_cv_sys_mounted_getmntent1)
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| 149 | if test $fu_cv_sys_mounted_getmntent1 = yes; then
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| 150 | ac_list_mounted_fs=found
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| 151 | AC_DEFINE(MOUNTED_GETMNTENT1, 1,
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| 152 | [Define if there is a function named getmntent for reading the list
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| 153 | of mounted file systems, and that function takes a single argument.
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| 154 | (4.3BSD, SunOS, HP-UX, Dynix, Irix)])
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| 155 | fi
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| 156 | fi
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| 157 |
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| 158 | if test -z "$ac_list_mounted_fs"; then
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| 159 | # SVR4
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| 160 | AC_MSG_CHECKING([for two-argument getmntent function])
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| 161 | AC_CACHE_VAL(fu_cv_sys_mounted_getmntent2,
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| 162 | [AC_EGREP_HEADER(getmntent, sys/mnttab.h,
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| 163 | fu_cv_sys_mounted_getmntent2=yes,
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| 164 | fu_cv_sys_mounted_getmntent2=no)])
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| 165 | AC_MSG_RESULT($fu_cv_sys_mounted_getmntent2)
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| 166 | if test $fu_cv_sys_mounted_getmntent2 = yes; then
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| 167 | ac_list_mounted_fs=found
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| 168 | AC_DEFINE(MOUNTED_GETMNTENT2, 1,
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| 169 | [Define if there is a function named getmntent for reading the list of
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| 170 | mounted file systems, and that function takes two arguments. (SVR4)])
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| 171 | AC_CHECK_FUNCS(hasmntopt)
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| 172 | fi
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| 173 | fi
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| 174 |
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| 175 | fi
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| 176 |
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| 177 | if test -z "$ac_list_mounted_fs"; then
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| 178 | # DEC Alpha running OSF/1, and Apple Darwin 1.3.
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| 179 | # powerpc-apple-darwin1.3.7 needs sys/param.h sys/ucred.h sys/fs_types.h
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| 180 |
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| 181 | AC_MSG_CHECKING([for getfsstat function])
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| 182 | AC_CACHE_VAL(fu_cv_sys_mounted_getfsstat,
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| 183 | [AC_TRY_LINK([
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| 184 | #include <sys/types.h>
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| 185 | #if HAVE_STRUCT_FSSTAT_F_FSTYPENAME
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| 186 | # define FS_TYPE(Ent) ((Ent).f_fstypename)
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| 187 | #else
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| 188 | # define FS_TYPE(Ent) mnt_names[(Ent).f_type]
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| 189 | #endif
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| 190 | ]$getfsstat_includes
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| 191 | ,
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| 192 | [struct statfs *stats;
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| 193 | int numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT);
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| 194 | char *t = FS_TYPE (*stats); ],
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| 195 | fu_cv_sys_mounted_getfsstat=yes,
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| 196 | fu_cv_sys_mounted_getfsstat=no)])
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| 197 | AC_MSG_RESULT($fu_cv_sys_mounted_getfsstat)
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| 198 | if test $fu_cv_sys_mounted_getfsstat = yes; then
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| 199 | ac_list_mounted_fs=found
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| 200 | AC_DEFINE(MOUNTED_GETFSSTAT, 1,
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| 201 | [Define if there is a function named getfsstat for reading the
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| 202 | list of mounted file systems. (DEC Alpha running OSF/1)])
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| 203 | fi
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| 204 | fi
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| 205 |
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| 206 | if test -z "$ac_list_mounted_fs"; then
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| 207 | # SVR3
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| 208 | AC_MSG_CHECKING([for FIXME existence of three headers])
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| 209 | AC_CACHE_VAL(fu_cv_sys_mounted_fread_fstyp,
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| 210 | [AC_TRY_CPP([
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| 211 | #include <sys/statfs.h>
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| 212 | #include <sys/fstyp.h>
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| 213 | #include <mnttab.h>],
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| 214 | fu_cv_sys_mounted_fread_fstyp=yes,
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| 215 | fu_cv_sys_mounted_fread_fstyp=no)])
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| 216 | AC_MSG_RESULT($fu_cv_sys_mounted_fread_fstyp)
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| 217 | if test $fu_cv_sys_mounted_fread_fstyp = yes; then
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| 218 | ac_list_mounted_fs=found
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| 219 | AC_DEFINE(MOUNTED_FREAD_FSTYP, 1,
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| 220 | [Define if (like SVR2) there is no specific function for reading the
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| 221 | list of mounted file systems, and your system has these header files:
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| 222 | <sys/fstyp.h> and <sys/statfs.h>. (SVR3)])
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| 223 | fi
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| 224 | fi
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| 225 |
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| 226 | if test -z "$ac_list_mounted_fs"; then
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| 227 | # 4.4BSD and DEC OSF/1.
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| 228 | AC_MSG_CHECKING([for getmntinfo function])
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| 229 | AC_CACHE_VAL(fu_cv_sys_mounted_getmntinfo,
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| 230 | [
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| 231 | test "$ac_cv_func_getmntinfo" = yes \
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| 232 | && fu_cv_sys_mounted_getmntinfo=yes \
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| 233 | || fu_cv_sys_mounted_getmntinfo=no
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| 234 | ])
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| 235 | AC_MSG_RESULT($fu_cv_sys_mounted_getmntinfo)
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| 236 | if test $fu_cv_sys_mounted_getmntinfo = yes; then
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| 237 | AC_MSG_CHECKING([whether getmntinfo returns statvfs structures])
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| 238 | AC_CACHE_VAL(fu_cv_sys_mounted_getmntinfo2,
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| 239 | [
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| 240 | AC_TRY_COMPILE([
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| 241 | #if HAVE_SYS_PARAM_H
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| 242 | # include <sys/param.h>
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| 243 | #endif
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| 244 | #include <sys/types.h>
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| 245 | #if HAVE_SYS_MOUNT_H
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| 246 | # include <sys/mount.h>
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| 247 | #endif
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| 248 | #if HAVE_SYS_STATVFS_H
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| 249 | # include <sys/statvfs.h>
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| 250 | #endif
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| 251 | extern int getmntinfo (struct statfs **, int);
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| 252 | ], [],
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| 253 | [fu_cv_sys_mounted_getmntinfo2=no],
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| 254 | [fu_cv_sys_mounted_getmntinfo2=yes])
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| 255 | ])
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| 256 | AC_MSG_RESULT([$fu_cv_sys_mounted_getmntinfo2])
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| 257 | if test $fu_cv_sys_mounted_getmntinfo2 = no; then
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| 258 | ac_list_mounted_fs=found
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| 259 | AC_DEFINE(MOUNTED_GETMNTINFO, 1,
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| 260 | [Define if there is a function named getmntinfo for reading the
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| 261 | list of mounted file systems and it returns an array of
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| 262 | 'struct statfs'. (4.4BSD, Darwin)])
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| 263 | else
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| 264 | ac_list_mounted_fs=found
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| 265 | AC_DEFINE(MOUNTED_GETMNTINFO2, 1,
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| 266 | [Define if there is a function named getmntinfo for reading the
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| 267 | list of mounted file systems and it returns an array of
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| 268 | 'struct statvfs'. (NetBSD 3.0)])
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| 269 | fi
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| 270 | fi
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| 271 | fi
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| 272 |
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| 273 | if test -z "$ac_list_mounted_fs"; then
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| 274 | # Ultrix
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| 275 | AC_MSG_CHECKING([for getmnt function])
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| 276 | AC_CACHE_VAL(fu_cv_sys_mounted_getmnt,
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| 277 | [AC_TRY_CPP([
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| 278 | #include <sys/fs_types.h>
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| 279 | #include <sys/mount.h>],
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| 280 | fu_cv_sys_mounted_getmnt=yes,
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| 281 | fu_cv_sys_mounted_getmnt=no)])
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| 282 | AC_MSG_RESULT($fu_cv_sys_mounted_getmnt)
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| 283 | if test $fu_cv_sys_mounted_getmnt = yes; then
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| 284 | ac_list_mounted_fs=found
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| 285 | AC_DEFINE(MOUNTED_GETMNT, 1,
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| 286 | [Define if there is a function named getmnt for reading the list of
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| 287 | mounted file systems. (Ultrix)])
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| 288 | fi
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| 289 | fi
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| 290 |
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| 291 | if test -z "$ac_list_mounted_fs"; then
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| 292 | # BeOS
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| 293 | AC_CHECK_FUNCS(next_dev fs_stat_dev)
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| 294 | AC_CHECK_HEADERS(fs_info.h)
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| 295 | AC_MSG_CHECKING([for BEOS mounted file system support functions])
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| 296 | if test $ac_cv_header_fs_info_h = yes \
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| 297 | && test $ac_cv_func_next_dev = yes \
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| 298 | && test $ac_cv_func_fs_stat_dev = yes; then
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| 299 | fu_result=yes
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| 300 | else
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| 301 | fu_result=no
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| 302 | fi
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| 303 | AC_MSG_RESULT($fu_result)
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| 304 | if test $fu_result = yes; then
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| 305 | ac_list_mounted_fs=found
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| 306 | AC_DEFINE(MOUNTED_FS_STAT_DEV, 1,
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| 307 | [Define if there are functions named next_dev and fs_stat_dev for
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| 308 | reading the list of mounted file systems. (BeOS)])
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| 309 | fi
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| 310 | fi
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| 311 |
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| 312 | if test -z "$ac_list_mounted_fs"; then
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| 313 | # SVR2
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| 314 | AC_MSG_CHECKING([whether it is possible to resort to fread on /etc/mnttab])
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| 315 | AC_CACHE_VAL(fu_cv_sys_mounted_fread,
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| 316 | [AC_TRY_CPP([#include <mnttab.h>],
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| 317 | fu_cv_sys_mounted_fread=yes,
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| 318 | fu_cv_sys_mounted_fread=no)])
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| 319 | AC_MSG_RESULT($fu_cv_sys_mounted_fread)
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| 320 | if test $fu_cv_sys_mounted_fread = yes; then
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| 321 | ac_list_mounted_fs=found
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| 322 | AC_DEFINE(MOUNTED_FREAD, 1,
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| 323 | [Define if there is no specific function for reading the list of
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| 324 | mounted file systems. fread will be used to read /etc/mnttab.
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| 325 | (SVR2) ])
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| 326 | fi
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| 327 | fi
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| 328 |
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| 329 | if test -z "$ac_list_mounted_fs"; then
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| 330 | AC_MSG_ERROR([could not determine how to read list of mounted file systems])
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| 331 | # FIXME -- no need to abort building the whole package
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| 332 | # Can't build mountlist.c or anything that needs its functions
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| 333 | fi
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| 334 |
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| 335 | AS_IF([test $ac_list_mounted_fs = found], [$1], [$2])
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| 336 |
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| 337 | ])
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