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annotate m4/ls-mntd-fs.m4 @ 39908:f2b5499e6ee2

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mountlist: Improve support for Solaris in 64-bit mode. Reported by David Wood <David.Wood@deshaw.com> in <https://debbugs.gnu.org/cgi/bugreport.cgi?bug=6816>. * m4/ls-mntd-fs.m4 (gl_LIST_MOUNTED_FILE_SYSTEMS): On Solaris 8 or newer, define MOUNTED_GETEXTMNTENT instead of MOUNTED_GETMNTENT2. * lib/mountlist.c: Add code for MOUNTED_GETEXTMNTENT case.
author Bruno Haible <bruno@clisp.org>
date Fri, 12 Oct 2018 11:12:53 +0200
parents b14bcf3a1610
children dc86d8546fe5
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1 # serial 34
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2 # How to list mounted file systems.
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3
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4 # Copyright (C) 1998-2004, 2006, 2009-2018 Free Software Foundation, Inc.
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5 #
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6 # This file is free software; the Free Software Foundation
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7 # gives unlimited permission to copy and/or distribute it,
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8 # with or without modifications, as long as this notice is preserved.
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9
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10 dnl From Jim Meyering.
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11 dnl
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12 dnl This is not pretty. I've just taken the autoconf code and wrapped
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13 dnl it in an AC_DEFUN and made some other fixes.
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14 dnl
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15
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16 # Replace Autoconf's AC_FUNC_GETMNTENT to work around a bug in Autoconf
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17 # through Autoconf 2.59. We can remove this once we assume Autoconf 2.60
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18 # or later.
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19 AC_DEFUN([AC_FUNC_GETMNTENT],
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20 [
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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_REQUIRE([AC_CANONICAL_HOST])
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31 AC_CHECK_FUNCS([listmntent])
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32 AC_CHECK_HEADERS_ONCE([sys/param.h sys/statvfs.h])
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34 # We must include grp.h before ucred.h on OSF V4.0, since ucred.h uses
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35 # NGROUPS (as the array dimension for a struct member) without a definition.
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36 AC_CHECK_HEADERS([sys/ucred.h], [], [], [#include <grp.h>])
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38 AC_CHECK_HEADERS([sys/mount.h], [], [],
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39 [AC_INCLUDES_DEFAULT
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40 [#if HAVE_SYS_PARAM_H
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41 #include <sys/param.h>
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42 #endif
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43 ]])
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45 AC_CHECK_HEADERS([mntent.h sys/fs_types.h])
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46 getfsstat_includes="\
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47 $ac_includes_default
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48 #if HAVE_SYS_PARAM_H
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49 # include <sys/param.h> /* needed by powerpc-apple-darwin1.3.7 */
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50 #endif
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51 #if HAVE_SYS_UCRED_H
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52 # include <grp.h> /* needed for definition of NGROUPS */
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53 # include <sys/ucred.h> /* needed by powerpc-apple-darwin1.3.7 */
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54 #endif
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55 #if HAVE_SYS_MOUNT_H
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56 # include <sys/mount.h>
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57 #endif
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58 #if HAVE_SYS_FS_TYPES_H
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59 # include <sys/fs_types.h> /* needed by powerpc-apple-darwin1.3.7 */
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60 #endif
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61 "
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62 AC_CHECK_MEMBERS([struct fsstat.f_fstypename],,,[$getfsstat_includes])
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63
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64 # Determine how to get the list of mounted file systems.
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65 ac_list_mounted_fs=
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66
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67 # If the getmntent function is available but not in the standard library,
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68 # make sure LIBS contains the appropriate -l option.
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69 AC_FUNC_GETMNTENT
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71 # This test must precede the ones for getmntent because Unicos-9 is
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72 # reported to have the getmntent function, but its support is incompatible
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73 # with other getmntent implementations.
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74
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75 # NOTE: Normally, I wouldn't use a check for system type as I've done for
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76 # 'CRAY' below since that goes against the whole autoconf philosophy. But
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77 # I think there is too great a chance that some non-Cray system has a
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78 # function named listmntent to risk the false positive.
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79
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80 if test -z "$ac_list_mounted_fs"; then
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81 # (obsolete) Cray UNICOS 9
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82 AC_CACHE_CHECK([for listmntent of Cray/Unicos-9],
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83 [fu_cv_sys_mounted_cray_listmntent],
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84 [fu_cv_sys_mounted_cray_listmntent=no
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85 AC_EGREP_CPP([yes],
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86 [#ifdef _CRAY
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87 yes
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88 #endif
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89 ], [test $ac_cv_func_listmntent = yes \
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90 && fu_cv_sys_mounted_cray_listmntent=yes]
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91 )
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92 ])
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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_CACHE_CHECK([for mntctl function and struct vmount],
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104 [fu_cv_sys_mounted_vmount],
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105 [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#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 if test $fu_cv_sys_mounted_vmount = yes; then
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109 ac_list_mounted_fs=found
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110 AC_DEFINE([MOUNTED_VMOUNT], [1],
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111 [Define if there is a function named mntctl that can be used to read
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112 the list of mounted file systems, and there is a system header file
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113 that declares 'struct vmount'. (AIX)])
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114 fi
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115 fi
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116
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117 if test $ac_cv_func_getmntent = yes; then
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118
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119 # This system has the getmntent function.
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120 # Determine whether it's the one-argument variant or the two-argument one.
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121
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122 if test -z "$ac_list_mounted_fs"; then
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123 # glibc, HP-UX, IRIX, Cygwin, Android, also (obsolete) 4.3BSD, SunOS, Dynix.
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124 AC_CACHE_CHECK([for one-argument getmntent function],
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125 [fu_cv_sys_mounted_getmntent1],
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126 [AC_COMPILE_IFELSE(
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127 [AC_LANG_PROGRAM([[
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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 ]])],
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147 [fu_cv_sys_mounted_getmntent1=yes],
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148 [fu_cv_sys_mounted_getmntent1=no])
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149 ])
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150 if test $fu_cv_sys_mounted_getmntent1 = yes; then
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151 ac_list_mounted_fs=found
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152 AC_DEFINE([MOUNTED_GETMNTENT1], [1],
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153 [Define if there is a function named getmntent for reading the list
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154 of mounted file systems, and that function takes a single argument.
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155 (4.3BSD, SunOS, HP-UX, Dynix, Irix)])
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156 AC_CHECK_FUNCS([hasmntopt])
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157 fi
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158 fi
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159
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160 if test -z "$ac_list_mounted_fs"; then
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161 # Solaris >= 8.
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162 AC_CACHE_CHECK([for getextmntent function],
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163 [fu_cv_sys_mounted_getextmntent],
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164 [AC_EGREP_HEADER([getextmntent], [sys/mnttab.h],
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165 [fu_cv_sys_mounted_getextmntent=yes],
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166 [fu_cv_sys_mounted_getextmntent=no])])
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167 if test $fu_cv_sys_mounted_getextmntent = yes; then
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168 ac_list_mounted_fs=found
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169 AC_DEFINE([MOUNTED_GETEXTMNTENT], [1],
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170 [Define if there is a function named getextmntent for reading the list
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171 of mounted file systems. (Solaris)])
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172 fi
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173 fi
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174
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175 if test -z "$ac_list_mounted_fs"; then
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176 # Solaris < 8, also (obsolete) SVR4.
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177 # Solaris >= 8 has the two-argument getmntent but is already handled above.
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178 AC_CACHE_CHECK([for two-argument getmntent function],
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179 [fu_cv_sys_mounted_getmntent2],
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180 [AC_EGREP_HEADER([getmntent], [sys/mnttab.h],
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181 [fu_cv_sys_mounted_getmntent2=yes],
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182 [fu_cv_sys_mounted_getmntent2=no])
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183 ])
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184 if test $fu_cv_sys_mounted_getmntent2 = yes; then
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185 ac_list_mounted_fs=found
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186 AC_DEFINE([MOUNTED_GETMNTENT2], [1],
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187 [Define if there is a function named getmntent for reading the list of
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188 mounted file systems, and that function takes two arguments. (SVR4)])
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189 AC_CHECK_FUNCS([hasmntopt])
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190 fi
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191 fi
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192
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193 fi
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194
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195 if test -z "$ac_list_mounted_fs"; then
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196 # OSF/1, also (obsolete) Apple Darwin 1.3.
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197 # powerpc-apple-darwin1.3.7 needs sys/param.h sys/ucred.h sys/fs_types.h
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198
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199 AC_CACHE_CHECK([for getfsstat function],
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200 [fu_cv_sys_mounted_getfsstat],
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201 [AC_LINK_IFELSE(
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202 [AC_LANG_PROGRAM([[
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203 #include <sys/types.h>
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204 #if HAVE_STRUCT_FSSTAT_F_FSTYPENAME
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205 # define FS_TYPE(Ent) ((Ent).f_fstypename)
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206 #else
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207 # define FS_TYPE(Ent) mnt_names[(Ent).f_type]
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208 #endif
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209 $getfsstat_includes
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210 ]],
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211 [[struct statfs *stats;
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212 int numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT);
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213 char *t = FS_TYPE (*stats);
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214 ]])],
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215 [fu_cv_sys_mounted_getfsstat=yes],
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216 [fu_cv_sys_mounted_getfsstat=no])
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217 ])
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218 if test $fu_cv_sys_mounted_getfsstat = yes; then
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219 ac_list_mounted_fs=found
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220 AC_DEFINE([MOUNTED_GETFSSTAT], [1],
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221 [Define if there is a function named getfsstat for reading the
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222 list of mounted file systems. (DEC Alpha running OSF/1)])
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223 fi
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224 fi
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225
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226 if test -z "$ac_list_mounted_fs"; then
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227 # (obsolete) SVR3
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228 AC_CACHE_CHECK([for FIXME existence of three headers],
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229 [fu_cv_sys_mounted_fread_fstyp],
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230 [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
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231 #include <sys/statfs.h>
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232 #include <sys/fstyp.h>
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233 #include <mnttab.h>
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234 ]])],
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235 [fu_cv_sys_mounted_fread_fstyp=yes],
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236 [fu_cv_sys_mounted_fread_fstyp=no])
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237 ])
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238 if test $fu_cv_sys_mounted_fread_fstyp = yes; then
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239 ac_list_mounted_fs=found
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240 AC_DEFINE([MOUNTED_FREAD_FSTYP], [1],
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241 [Define if (like SVR2) there is no specific function for reading the
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242 list of mounted file systems, and your system has these header files:
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243 <sys/fstyp.h> and <sys/statfs.h>. (SVR3)])
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244 fi
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245 fi
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246
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247 if test -z "$ac_list_mounted_fs"; then
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248 # Mac OS X, FreeBSD, NetBSD, OpenBSD, Minix, also (obsolete) 4.4BSD.
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249 # OSF/1 also has getmntinfo but is already handled above.
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250 # We cannot use AC_CHECK_FUNCS([getmntinfo]) here, because at the linker
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251 # level the function is sometimes called getmntinfo64 or getmntinfo$INODE64
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252 # on Mac OS X, __getmntinfo13 on NetBSD and Minix, _F64_getmntinfo on OSF/1.
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253 AC_CACHE_CHECK([for getmntinfo function],
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254 [fu_cv_sys_mounted_getmntinfo],
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255 [AC_LINK_IFELSE(
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256 [AC_LANG_PROGRAM([[
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257 #if HAVE_SYS_PARAM_H
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258 # include <sys/param.h>
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259 #endif
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260 #include <sys/types.h>
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261 #if HAVE_SYS_MOUNT_H
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262 # include <sys/mount.h>
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263 #endif
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264 #if HAVE_SYS_STATVFS_H
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265 # include <sys/statvfs.h>
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266 #endif
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267 #include <stdlib.h>
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268 ]],
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269 [[int count = getmntinfo (NULL, MNT_WAIT);
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270 ]])],
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271 [fu_cv_sys_mounted_getmntinfo=yes],
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272 [fu_cv_sys_mounted_getmntinfo=no])
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273 ])
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274 if test $fu_cv_sys_mounted_getmntinfo = yes; then
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275 AC_CACHE_CHECK([whether getmntinfo returns statvfs structures],
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276 [fu_cv_sys_mounted_getmntinfo2],
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277 [AC_COMPILE_IFELSE(
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278 [AC_LANG_PROGRAM([[
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279 #if HAVE_SYS_PARAM_H
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280 # include <sys/param.h>
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281 #endif
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282 #include <sys/types.h>
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283 #if HAVE_SYS_MOUNT_H
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284 # include <sys/mount.h>
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285 #endif
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286 #if HAVE_SYS_STATVFS_H
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287 # include <sys/statvfs.h>
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288 #endif
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289 extern
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290 #ifdef __cplusplus
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291 "C"
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292 #endif
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293 int getmntinfo (struct statfs **, int);
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294 ]], [])],
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295 [fu_cv_sys_mounted_getmntinfo2=no],
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296 [fu_cv_sys_mounted_getmntinfo2=yes])
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297 ])
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298 if test $fu_cv_sys_mounted_getmntinfo2 = no; then
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299 # Mac OS X, FreeBSD, OpenBSD, also (obsolete) 4.4BSD.
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300 ac_list_mounted_fs=found
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301 AC_DEFINE([MOUNTED_GETMNTINFO], [1],
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302 [Define if there is a function named getmntinfo for reading the
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303 list of mounted file systems and it returns an array of
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304 'struct statfs'. (4.4BSD, Darwin)])
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305 else
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306 # NetBSD, Minix.
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307 ac_list_mounted_fs=found
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308 AC_DEFINE([MOUNTED_GETMNTINFO2], [1],
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309 [Define if there is a function named getmntinfo for reading the
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310 list of mounted file systems and it returns an array of
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311 'struct statvfs'. (NetBSD 3.0)])
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312 fi
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313 fi
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314 fi
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315
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316 if test -z "$ac_list_mounted_fs"; then
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317 # (obsolete) Ultrix.
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318 AC_CACHE_CHECK([for getmnt function],
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319 [fu_cv_sys_mounted_getmnt],
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320 [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
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321 #include <sys/fs_types.h>
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322 #include <sys/mount.h>]])],
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323 [fu_cv_sys_mounted_getmnt=yes],
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324 [fu_cv_sys_mounted_getmnt=no])
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325 ])
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326 if test $fu_cv_sys_mounted_getmnt = yes; then
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327 ac_list_mounted_fs=found
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328 AC_DEFINE([MOUNTED_GETMNT], [1],
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329 [Define if there is a function named getmnt for reading the list of
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330 mounted file systems. (Ultrix)])
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331 fi
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332 fi
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333
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334 if test -z "$ac_list_mounted_fs"; then
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335 # Haiku, also (obsolete) BeOS.
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336 AC_CHECK_FUNCS([next_dev fs_stat_dev])
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337 AC_CHECK_HEADERS([fs_info.h])
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338 AC_CACHE_CHECK([for BEOS mounted file system support functions],
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339 [fu_cv_sys_mounted_fs_stat_dev],
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340 [if test $ac_cv_header_fs_info_h = yes \
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341 && test $ac_cv_func_next_dev = yes \
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342 && test $ac_cv_func_fs_stat_dev = yes; then
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343 fu_cv_sys_mounted_fs_stat_dev=yes
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344 else
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345 fu_cv_sys_mounted_fs_stat_dev=no
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346 fi
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347 ])
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348 if test $fu_cv_sys_mounted_fs_stat_dev = yes; then
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349 ac_list_mounted_fs=found
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350 AC_DEFINE([MOUNTED_FS_STAT_DEV], [1],
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351 [Define if there are functions named next_dev and fs_stat_dev for
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352 reading the list of mounted file systems. (BeOS)])
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353 fi
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354 fi
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355
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356 if test -z "$ac_list_mounted_fs"; then
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357 # (obsolete) SVR2.
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358 AC_CACHE_CHECK([whether it is possible to resort to fread on /etc/mnttab],
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359 [fu_cv_sys_mounted_fread],
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360 [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <mnttab.h>]])],
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361 [fu_cv_sys_mounted_fread=yes],
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362 [fu_cv_sys_mounted_fread=no])
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363 ])
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364 if test $fu_cv_sys_mounted_fread = yes; then
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365 ac_list_mounted_fs=found
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366 AC_DEFINE([MOUNTED_FREAD], [1],
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367 [Define if there is no specific function for reading the list of
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368 mounted file systems. fread will be used to read /etc/mnttab.
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369 (SVR2) ])
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370 fi
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371 fi
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372
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373 if test -z "$ac_list_mounted_fs"; then
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374 # Interix / BSD alike statvfs
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375 # the code is really interix specific, so make sure, we're on it.
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376 case "$host" in
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377 *-interix*)
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378 AC_CHECK_FUNCS([statvfs])
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379 if test $ac_cv_func_statvfs = yes; then
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380 ac_list_mounted_fs=found
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381 AC_DEFINE([MOUNTED_INTERIX_STATVFS], [1],
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382 [Define if we are on interix, and ought to use statvfs plus
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383 some special knowledge on where mounted file systems can be
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384 found. (Interix)])
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385 fi
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386 ;;
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387 esac
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388 fi
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389
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390 if test -z "$ac_list_mounted_fs"; then
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391 AC_MSG_ERROR([could not determine how to read list of mounted file systems])
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392 # FIXME -- no need to abort building the whole package
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393 # Can't build mountlist.c or anything that needs its functions
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394 fi
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395
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396 AS_IF([test $ac_list_mounted_fs = found], [$1], [$2])
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397
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398 ])