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- # serial 29
- # How to list mounted file systems.
- # Copyright (C) 1998-2004, 2006, 2009-2011 Free Software Foundation, Inc.
- #
- # This file is free software; the Free Software Foundation
- # gives unlimited permission to copy and/or distribute it,
- # with or without modifications, as long as this notice is preserved.
- dnl From Jim Meyering.
- dnl
- dnl This is not pretty. I've just taken the autoconf code and wrapped
- dnl it in an AC_DEFUN and made some other fixes.
- dnl
- # Replace Autoconf's AC_FUNC_GETMNTENT to work around a bug in Autoconf
- # through Autoconf 2.59. We can remove this once we assume Autoconf 2.60
- # or later.
- AC_DEFUN([AC_FUNC_GETMNTENT],
- [# getmntent is in the standard C library on UNICOS, in -lsun on Irix 4,
- # -lseq on Dynix/PTX, -lgen on Unixware.
- AC_SEARCH_LIBS([getmntent], [sun seq gen])
- AC_CHECK_FUNCS([getmntent])
- ])
- # gl_LIST_MOUNTED_FILE_SYSTEMS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
- AC_DEFUN([gl_LIST_MOUNTED_FILE_SYSTEMS],
- [
- AC_CHECK_FUNCS([listmntent getmntinfo])
- AC_CHECK_HEADERS_ONCE([sys/param.h sys/statvfs.h])
- # We must include grp.h before ucred.h on OSF V4.0, since ucred.h uses
- # NGROUPS (as the array dimension for a struct member) without a definition.
- AC_CHECK_HEADERS([sys/ucred.h], [], [], [#include <grp.h>])
- AC_CHECK_HEADERS([sys/mount.h], [], [],
- [AC_INCLUDES_DEFAULT
- [#if HAVE_SYS_PARAM_H
- #include <sys/param.h>
- #endif]])
- AC_CHECK_HEADERS([mntent.h sys/fs_types.h])
- getfsstat_includes="\
- $ac_includes_default
- #if HAVE_SYS_PARAM_H
- # include <sys/param.h> /* needed by powerpc-apple-darwin1.3.7 */
- #endif
- #if HAVE_SYS_UCRED_H
- # include <grp.h> /* needed for definition of NGROUPS */
- # include <sys/ucred.h> /* needed by powerpc-apple-darwin1.3.7 */
- #endif
- #if HAVE_SYS_MOUNT_H
- # include <sys/mount.h>
- #endif
- #if HAVE_SYS_FS_TYPES_H
- # include <sys/fs_types.h> /* needed by powerpc-apple-darwin1.3.7 */
- #endif
- "
- AC_CHECK_MEMBERS([struct fsstat.f_fstypename],,,[$getfsstat_includes])
- # Determine how to get the list of mounted file systems.
- ac_list_mounted_fs=
- # If the getmntent function is available but not in the standard library,
- # make sure LIBS contains the appropriate -l option.
- AC_FUNC_GETMNTENT
- # This test must precede the ones for getmntent because Unicos-9 is
- # reported to have the getmntent function, but its support is incompatible
- # with other getmntent implementations.
- # NOTE: Normally, I wouldn't use a check for system type as I've done for
- # `CRAY' below since that goes against the whole autoconf philosophy. But
- # I think there is too great a chance that some non-Cray system has a
- # function named listmntent to risk the false positive.
- if test -z "$ac_list_mounted_fs"; then
- # Cray UNICOS 9
- AC_MSG_CHECKING([for listmntent of Cray/Unicos-9])
- AC_CACHE_VAL([fu_cv_sys_mounted_cray_listmntent],
- [fu_cv_sys_mounted_cray_listmntent=no
- AC_EGREP_CPP([yes],
- [#ifdef _CRAY
- yes
- #endif
- ], [test $ac_cv_func_listmntent = yes \
- && fu_cv_sys_mounted_cray_listmntent=yes]
- )
- ]
- )
- AC_MSG_RESULT([$fu_cv_sys_mounted_cray_listmntent])
- if test $fu_cv_sys_mounted_cray_listmntent = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_LISTMNTENT], [1],
- [Define if there is a function named listmntent that can be used to
- list all mounted file systems. (UNICOS)])
- fi
- fi
- if test -z "$ac_list_mounted_fs"; then
- # AIX.
- AC_MSG_CHECKING([for mntctl function and struct vmount])
- AC_CACHE_VAL([fu_cv_sys_mounted_vmount],
- [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <fshelp.h>]])],
- [fu_cv_sys_mounted_vmount=yes],
- [fu_cv_sys_mounted_vmount=no])])
- AC_MSG_RESULT([$fu_cv_sys_mounted_vmount])
- if test $fu_cv_sys_mounted_vmount = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_VMOUNT], [1],
- [Define if there is a function named mntctl that can be used to read
- the list of mounted file systems, and there is a system header file
- that declares `struct vmount.' (AIX)])
- fi
- fi
- if test $ac_cv_func_getmntent = yes; then
- # This system has the getmntent function.
- # Determine whether it's the one-argument variant or the two-argument one.
- if test -z "$ac_list_mounted_fs"; then
- # 4.3BSD, SunOS, HP-UX, Dynix, Irix
- AC_MSG_CHECKING([for one-argument getmntent function])
- AC_CACHE_VAL([fu_cv_sys_mounted_getmntent1],
- [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- /* SunOS 4.1.x /usr/include/mntent.h needs this for FILE */
- #include <stdio.h>
- #include <mntent.h>
- #if !defined MOUNTED
- # if defined _PATH_MOUNTED /* GNU libc */
- # define MOUNTED _PATH_MOUNTED
- # endif
- # if defined MNT_MNTTAB /* HP-UX. */
- # define MOUNTED MNT_MNTTAB
- # endif
- # if defined MNTTABNAME /* Dynix. */
- # define MOUNTED MNTTABNAME
- # endif
- #endif
- ]],
- [[ struct mntent *mnt = 0; char *table = MOUNTED;
- if (sizeof mnt && sizeof table) return 0;]])],
- [fu_cv_sys_mounted_getmntent1=yes],
- [fu_cv_sys_mounted_getmntent1=no])])
- AC_MSG_RESULT([$fu_cv_sys_mounted_getmntent1])
- if test $fu_cv_sys_mounted_getmntent1 = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_GETMNTENT1], [1],
- [Define if there is a function named getmntent for reading the list
- of mounted file systems, and that function takes a single argument.
- (4.3BSD, SunOS, HP-UX, Dynix, Irix)])
- fi
- fi
- if test -z "$ac_list_mounted_fs"; then
- # SVR4
- AC_MSG_CHECKING([for two-argument getmntent function])
- AC_CACHE_VAL([fu_cv_sys_mounted_getmntent2],
- [AC_EGREP_HEADER([getmntent], [sys/mnttab.h],
- fu_cv_sys_mounted_getmntent2=yes,
- fu_cv_sys_mounted_getmntent2=no)])
- AC_MSG_RESULT([$fu_cv_sys_mounted_getmntent2])
- if test $fu_cv_sys_mounted_getmntent2 = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_GETMNTENT2], [1],
- [Define if there is a function named getmntent for reading the list of
- mounted file systems, and that function takes two arguments. (SVR4)])
- AC_CHECK_FUNCS([hasmntopt])
- fi
- fi
- fi
- if test -z "$ac_list_mounted_fs"; then
- # DEC Alpha running OSF/1, and Apple Darwin 1.3.
- # powerpc-apple-darwin1.3.7 needs sys/param.h sys/ucred.h sys/fs_types.h
- AC_MSG_CHECKING([for getfsstat function])
- AC_CACHE_VAL([fu_cv_sys_mounted_getfsstat],
- [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
- #include <sys/types.h>
- #if HAVE_STRUCT_FSSTAT_F_FSTYPENAME
- # define FS_TYPE(Ent) ((Ent).f_fstypename)
- #else
- # define FS_TYPE(Ent) mnt_names[(Ent).f_type]
- #endif
- $getfsstat_includes]]
- ,
- [[struct statfs *stats;
- int numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT);
- char *t = FS_TYPE (*stats); ]])],
- [fu_cv_sys_mounted_getfsstat=yes],
- [fu_cv_sys_mounted_getfsstat=no])])
- AC_MSG_RESULT([$fu_cv_sys_mounted_getfsstat])
- if test $fu_cv_sys_mounted_getfsstat = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_GETFSSTAT], [1],
- [Define if there is a function named getfsstat for reading the
- list of mounted file systems. (DEC Alpha running OSF/1)])
- fi
- fi
- if test -z "$ac_list_mounted_fs"; then
- # SVR3
- AC_MSG_CHECKING([for FIXME existence of three headers])
- AC_CACHE_VAL([fu_cv_sys_mounted_fread_fstyp],
- [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
- #include <sys/statfs.h>
- #include <sys/fstyp.h>
- #include <mnttab.h>]])],
- [fu_cv_sys_mounted_fread_fstyp=yes],
- [fu_cv_sys_mounted_fread_fstyp=no])])
- AC_MSG_RESULT([$fu_cv_sys_mounted_fread_fstyp])
- if test $fu_cv_sys_mounted_fread_fstyp = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_FREAD_FSTYP], [1],
- [Define if (like SVR2) there is no specific function for reading the
- list of mounted file systems, and your system has these header files:
- <sys/fstyp.h> and <sys/statfs.h>. (SVR3)])
- fi
- fi
- if test -z "$ac_list_mounted_fs"; then
- # 4.4BSD and DEC OSF/1.
- AC_MSG_CHECKING([for getmntinfo function])
- AC_CACHE_VAL([fu_cv_sys_mounted_getmntinfo],
- [
- test "$ac_cv_func_getmntinfo" = yes \
- && fu_cv_sys_mounted_getmntinfo=yes \
- || fu_cv_sys_mounted_getmntinfo=no
- ])
- AC_MSG_RESULT([$fu_cv_sys_mounted_getmntinfo])
- if test $fu_cv_sys_mounted_getmntinfo = yes; then
- AC_MSG_CHECKING([whether getmntinfo returns statvfs structures])
- AC_CACHE_VAL([fu_cv_sys_mounted_getmntinfo2],
- [
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #if HAVE_SYS_PARAM_H
- # include <sys/param.h>
- #endif
- #include <sys/types.h>
- #if HAVE_SYS_MOUNT_H
- # include <sys/mount.h>
- #endif
- #if HAVE_SYS_STATVFS_H
- # include <sys/statvfs.h>
- #endif
- extern
- #ifdef __cplusplus
- "C"
- #endif
- int getmntinfo (struct statfs **, int);
- ]], [])],
- [fu_cv_sys_mounted_getmntinfo2=no],
- [fu_cv_sys_mounted_getmntinfo2=yes])
- ])
- AC_MSG_RESULT([$fu_cv_sys_mounted_getmntinfo2])
- if test $fu_cv_sys_mounted_getmntinfo2 = no; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_GETMNTINFO], [1],
- [Define if there is a function named getmntinfo for reading the
- list of mounted file systems and it returns an array of
- 'struct statfs'. (4.4BSD, Darwin)])
- else
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_GETMNTINFO2], [1],
- [Define if there is a function named getmntinfo for reading the
- list of mounted file systems and it returns an array of
- 'struct statvfs'. (NetBSD 3.0)])
- fi
- fi
- fi
- if test -z "$ac_list_mounted_fs"; then
- # Ultrix
- AC_MSG_CHECKING([for getmnt function])
- AC_CACHE_VAL([fu_cv_sys_mounted_getmnt],
- [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
- #include <sys/fs_types.h>
- #include <sys/mount.h>]])],
- [fu_cv_sys_mounted_getmnt=yes],
- [fu_cv_sys_mounted_getmnt=no])])
- AC_MSG_RESULT([$fu_cv_sys_mounted_getmnt])
- if test $fu_cv_sys_mounted_getmnt = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_GETMNT], [1],
- [Define if there is a function named getmnt for reading the list of
- mounted file systems. (Ultrix)])
- fi
- fi
- if test -z "$ac_list_mounted_fs"; then
- # BeOS
- AC_CHECK_FUNCS([next_dev fs_stat_dev])
- AC_CHECK_HEADERS([fs_info.h])
- AC_MSG_CHECKING([for BEOS mounted file system support functions])
- if test $ac_cv_header_fs_info_h = yes \
- && test $ac_cv_func_next_dev = yes \
- && test $ac_cv_func_fs_stat_dev = yes; then
- fu_result=yes
- else
- fu_result=no
- fi
- AC_MSG_RESULT([$fu_result])
- if test $fu_result = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_FS_STAT_DEV], [1],
- [Define if there are functions named next_dev and fs_stat_dev for
- reading the list of mounted file systems. (BeOS)])
- fi
- fi
- if test -z "$ac_list_mounted_fs"; then
- # SVR2
- AC_MSG_CHECKING([whether it is possible to resort to fread on /etc/mnttab])
- AC_CACHE_VAL([fu_cv_sys_mounted_fread],
- [AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <mnttab.h>]])],
- [fu_cv_sys_mounted_fread=yes],
- [fu_cv_sys_mounted_fread=no])])
- AC_MSG_RESULT([$fu_cv_sys_mounted_fread])
- if test $fu_cv_sys_mounted_fread = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_FREAD], [1],
- [Define if there is no specific function for reading the list of
- mounted file systems. fread will be used to read /etc/mnttab.
- (SVR2) ])
- fi
- fi
- if test -z "$ac_list_mounted_fs"; then
- # Interix / BSD alike statvfs
- # the code is really interix specific, so make sure, we're on it.
- case "$host" in
- *-interix*)
- AC_CHECK_FUNCS([statvfs])
- if test $ac_cv_func_statvfs = yes; then
- ac_list_mounted_fs=found
- AC_DEFINE([MOUNTED_INTERIX_STATVFS], [1],
- [Define if we are on interix, and ought to use statvfs plus
- some special knowledge on where mounted filesystems can be
- found. (Interix)])
- fi
- ;;
- esac
- fi
- if test -z "$ac_list_mounted_fs"; then
- AC_MSG_ERROR([could not determine how to read list of mounted file systems])
- # FIXME -- no need to abort building the whole package
- # Can't build mountlist.c or anything that needs its functions
- fi
- AS_IF([test $ac_list_mounted_fs = found], [$1], [$2])
- ])
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