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mc/m4.include/gnulib/mountlist.m4

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# serial 15
dnl Copyright (C) 2002-2006, 2009-2021 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Jim Meyering.
AC_PREREQ([2.60])
AC_DEFUN([gl_MOUNTLIST],
[
AC_REQUIRE([AC_CANONICAL_HOST])
AC_CHECK_FUNCS([listmntent])
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
if test -z "$ac_list_mounted_fs"; then
# AIX.
AC_CACHE_CHECK([for mntctl function and struct vmount],
[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])])
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
# glibc, HP-UX, IRIX, Cygwin, Android, also (obsolete) 4.3BSD, SunOS.
AC_CACHE_CHECK([for one-argument getmntent function],
[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 __ANDROID__ /* Android */
# undef MOUNTED
# define MOUNTED "/proc/mounts"
#elif !defined MOUNTED
# if defined _PATH_MOUNTED /* GNU libc */
# define MOUNTED _PATH_MOUNTED
# endif
# if defined MNT_MNTTAB /* HP-UX. */
# define MOUNTED MNT_MNTTAB
# 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])
])
if test $fu_cv_sys_mounted_getmntent1 = yes; then
ac_list_mounted_fs=found
AC_DEFINE([MOUNTED_GETMNTENT1], [1],
[Define if there is a function named getmntent for reading the list
of mounted file systems, and that function takes a single argument.
(4.3BSD, SunOS, HP-UX, Irix)])
AC_CHECK_FUNCS([setmntent endmntent hasmntopt])
fi
fi
if test -z "$ac_list_mounted_fs"; then
# Solaris >= 8.
AC_CACHE_CHECK([for getextmntent function],
[fu_cv_sys_mounted_getextmntent],
[AC_EGREP_HEADER([getextmntent], [sys/mnttab.h],
[fu_cv_sys_mounted_getextmntent=yes],
[fu_cv_sys_mounted_getextmntent=no])])
if test $fu_cv_sys_mounted_getextmntent = yes; then
ac_list_mounted_fs=found
AC_DEFINE([MOUNTED_GETEXTMNTENT], [1],
[Define if there is a function named getextmntent for reading the list
of mounted file systems. (Solaris)])
fi
fi
if test -z "$ac_list_mounted_fs"; then
# Solaris < 8, also (obsolete) SVR4.
# Solaris >= 8 has the two-argument getmntent but is already handled above.
AC_CACHE_CHECK([for two-argument getmntent function],
[fu_cv_sys_mounted_getmntent2],
[AC_EGREP_HEADER([getmntent], [sys/mnttab.h],
[fu_cv_sys_mounted_getmntent2=yes],
[fu_cv_sys_mounted_getmntent2=no])
])
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
# OSF/1, also (obsolete) Apple Darwin 1.3.
# powerpc-apple-darwin1.3.7 needs sys/param.h sys/ucred.h sys/fs_types.h
AC_CACHE_CHECK([for getfsstat function],
[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])
])
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
# (obsolete) SVR3
AC_CACHE_CHECK([for FIXME existence of three headers],
[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])
])
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
# Mac OS X, FreeBSD, NetBSD, OpenBSD, Minix, also (obsolete) 4.4BSD.
# OSF/1 also has getmntinfo but is already handled above.
# We cannot use AC_CHECK_FUNCS([getmntinfo]) here, because at the linker
# level the function is sometimes called getmntinfo64 or getmntinfo$INODE64
# on Mac OS X, __getmntinfo13 on NetBSD and Minix, _F64_getmntinfo on OSF/1.
AC_CACHE_CHECK([for getmntinfo function],
[fu_cv_sys_mounted_getmntinfo],
[AC_LINK_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
#include <stdlib.h>
]],
[[int count = getmntinfo (NULL, MNT_WAIT);
]])],
[fu_cv_sys_mounted_getmntinfo=yes],
[fu_cv_sys_mounted_getmntinfo=no])
])
if test $fu_cv_sys_mounted_getmntinfo = yes; then
AC_CACHE_CHECK([whether getmntinfo returns statvfs structures],
[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])
])
if test $fu_cv_sys_mounted_getmntinfo2 = no; then
# Mac OS X, FreeBSD, OpenBSD, also (obsolete) 4.4BSD.
ac_list_mounted_fs=found
AC_DEFINE([MOUNTED_GETMNTINFO], [1],
[Define if there is a function named getmntinfo for reading the
list of mounted file systems and it returns an array of
'struct statfs'. (4.4BSD, Darwin)])
else
# NetBSD, Minix.
ac_list_mounted_fs=found
AC_DEFINE([MOUNTED_GETMNTINFO2], [1],
[Define if there is a function named getmntinfo for reading the
list of mounted file systems and it returns an array of
'struct statvfs'. (NetBSD 3.0)])
fi
fi
fi
if test -z "$ac_list_mounted_fs"; then
# Haiku, also (obsolete) BeOS.
AC_CHECK_FUNCS([next_dev fs_stat_dev])
AC_CHECK_HEADERS([fs_info.h])
AC_CACHE_CHECK([for BEOS mounted file system support functions],
[fu_cv_sys_mounted_fs_stat_dev],
[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_cv_sys_mounted_fs_stat_dev=yes
else
fu_cv_sys_mounted_fs_stat_dev=no
fi
])
if test $fu_cv_sys_mounted_fs_stat_dev = yes; then
ac_list_mounted_fs=found
AC_DEFINE([MOUNTED_FS_STAT_DEV], [1],
[Define if there are functions named next_dev and fs_stat_dev for
reading the list of mounted file systems. (BeOS)])
fi
fi
if test -z "$ac_list_mounted_fs"; then
# 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 $ac_cv_func_statvfs = yes; then
ac_list_mounted_fs=found
AC_DEFINE([MOUNTED_INTERIX_STATVFS], [1],
[Define if we are on interix, and ought to use statvfs plus
some special knowledge on where mounted file systems can be
found. (Interix)])
fi
;;
esac
fi
if test -z "$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
if test $ac_list_mounted_fs = found; then
gl_cv_list_mounted_fs=yes
else
gl_cv_list_mounted_fs=no
fi
])
# Prerequisites of lib/mountlist.c not done by gl_MOUNTLIST.
AC_DEFUN([gl_PREREQ_MOUNTLIST_EXTRA],
[
dnl Note gl_MOUNTLIST checks for mntent.h, not sys/mntent.h.
AC_CHECK_HEADERS([sys/mntent.h])
AC_HEADER_MAJOR()dnl for use of makedev ()
gl_FSTYPENAME
])
# Replace Autoconf's AC_FUNC_GETMNTENT to omit checks that are unnecessary
# nowadays.
AC_DEFUN([AC_FUNC_GETMNTENT],
[
# getmntent is in the standard C library on most systems, but in -lgen on
# Unixware.
AC_SEARCH_LIBS([getmntent], [gen])
AC_CHECK_FUNCS([getmntent])
])
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