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from GNU fileutils for check_disk

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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@429 f882894a-f735-0410-b71e-b25c423dba1c
This commit is contained in:
Karl DeBisschop 2003-03-18 07:47:37 +00:00
parent b4bb59cd9b
commit cc7522b25b
8 changed files with 1645 additions and 0 deletions
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12
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#serial 3
AC_DEFUN(jm_AFS,
AC_MSG_CHECKING(for AFS)
if test -d /afs; then
AC_DEFINE(AFS, 1, [Define if you have the Andrew File System.])
ac_result=yes
else
ac_result=no
fi
AC_MSG_RESULT($ac_result)
)

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#serial 2
dnl From Jim Meyering.
dnl
dnl See if struct statfs has the f_fstypename member.
dnl If so, define HAVE_F_FSTYPENAME_IN_STATFS.
dnl
AC_DEFUN(jm_FSTYPENAME,
[
AC_CACHE_CHECK([for f_fstypename in struct statfs],
fu_cv_sys_f_fstypename_in_statfs,
[
AC_TRY_COMPILE(
[
#include <sys/param.h>
#include <sys/types.h>
#include <sys/mount.h>
],
[struct statfs s; int i = sizeof s.f_fstypename;],
fu_cv_sys_f_fstypename_in_statfs=yes,
fu_cv_sys_f_fstypename_in_statfs=no
)
]
)
if test $fu_cv_sys_f_fstypename_in_statfs = yes; then
AC_DEFINE_UNQUOTED(HAVE_F_FSTYPENAME_IN_STATFS, 1,
[Define if struct statfs has the f_fstypename member.])
fi
]
)

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/* fsusage.c -- return space usage of mounted filesystems
Copyright (C) 1991, 1992, 1996, 1998, 1999 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "../plugins/config.h"
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include "fsusage.h"
#if HAVE_LIMITS_H
# include <limits.h>
#endif
#ifndef CHAR_BIT
# define CHAR_BIT 8
#endif
int statfs ();
#if HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#if HAVE_SYS_MOUNT_H
# include <sys/mount.h>
#endif
#if HAVE_SYS_VFS_H
# include <sys/vfs.h>
#endif
#if HAVE_SYS_FS_S5PARAM_H /* Fujitsu UXP/V */
# include <sys/fs/s5param.h>
#endif
#if defined (HAVE_SYS_FILSYS_H) && !defined (_CRAY)
# include <sys/filsys.h> /* SVR2 */
#endif
#if HAVE_FCNTL_H
# include <fcntl.h>
#endif
#if HAVE_SYS_STATFS_H
# include <sys/statfs.h>
#endif
#if HAVE_DUSTAT_H /* AIX PS/2 */
# include <sys/dustat.h>
#endif
#if HAVE_SYS_STATVFS_H /* SVR4 */
# include <sys/statvfs.h>
int statvfs ();
#endif
/* Many space usage primitives use all 1 bits to denote a value that is
not applicable or unknown. Propagate this information by returning
a uintmax_t value that is all 1 bits if the argument is all 1 bits,
even if the argument is unsigned and smaller than uintmax_t. */
#define PROPAGATE_ALL_ONES(x) ((x) == -1 ? (uintmax_t) -1 : (uintmax_t) (x))
/* Extract the top bit of X as an uintmax_t value. */
#define EXTRACT_TOP_BIT(x) ((x) \
& ((uintmax_t) 1 << (sizeof (x) * CHAR_BIT - 1)))
/* If a value is negative, many space usage primitives store it into an
integer variable by assignment, even if the variable's type is unsigned.
So, if a space usage variable X's top bit is set, convert X to the
uintmax_t value V such that (- (uintmax_t) V) is the negative of
the original value. If X's top bit is clear, just yield X.
Use PROPAGATE_TOP_BIT if the original value might be negative;
otherwise, use PROPAGATE_ALL_ONES. */
#define PROPAGATE_TOP_BIT(x) ((x) | ~ (EXTRACT_TOP_BIT (x) - 1))
int safe_read ();
/* Fill in the fields of FSP with information about space usage for
the filesystem on which PATH resides.
DISK is the device on which PATH is mounted, for space-getting
methods that need to know it.
Return 0 if successful, -1 if not. When returning -1, ensure that
ERRNO is either a system error value, or zero if DISK is NULL
on a system that requires a non-NULL value. */
int
get_fs_usage (const char *path, const char *disk, struct fs_usage *fsp)
{
#ifdef STAT_STATFS3_OSF1
struct statfs fsd;
if (statfs (path, &fsd, sizeof (struct statfs)) != 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
#endif /* STAT_STATFS3_OSF1 */
#ifdef STAT_STATFS2_FS_DATA /* Ultrix */
struct fs_data fsd;
if (statfs (path, &fsd) != 1)
return -1;
fsp->fsu_blocksize = 1024;
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.fd_req.btot);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.fd_req.bfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.fd_req.bfreen);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.fd_req.bfreen) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.fd_req.gtot);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.fd_req.gfree);
#endif /* STAT_STATFS2_FS_DATA */
#ifdef STAT_READ_FILSYS /* SVR2 */
# ifndef SUPERBOFF
# define SUPERBOFF (SUPERB * 512)
# endif
struct filsys fsd;
int fd;
if (! disk)
{
errno = 0;
return -1;
}
fd = open (disk, O_RDONLY);
if (fd < 0)
return -1;
lseek (fd, (off_t) SUPERBOFF, 0);
if (safe_read (fd, (char *) &fsd, sizeof fsd) != sizeof fsd)
{
close (fd);
return -1;
}
close (fd);
fsp->fsu_blocksize = (fsd.s_type == Fs2b ? 1024 : 512);
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.s_fsize);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.s_tfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.s_tfree);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.s_tfree) != 0;
fsp->fsu_files = (fsd.s_isize == -1
? (uintmax_t) -1
: (fsd.s_isize - 2) * INOPB * (fsd.s_type == Fs2b ? 2 : 1));
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.s_tinode);
#endif /* STAT_READ_FILSYS */
#ifdef STAT_STATFS2_BSIZE /* 4.3BSD, SunOS 4, HP-UX, AIX */
struct statfs fsd;
if (statfs (path, &fsd) < 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
# ifdef STATFS_TRUNCATES_BLOCK_COUNTS
/* In SunOS 4.1.2, 4.1.3, and 4.1.3_U1, the block counts in the
struct statfs are truncated to 2GB. These conditions detect that
truncation, presumably without botching the 4.1.1 case, in which
the values are not truncated. The correct counts are stored in
undocumented spare fields. */
if (fsd.f_blocks == 0x7fffffff / fsd.f_bsize && fsd.f_spare[0] > 0)
{
fsd.f_blocks = fsd.f_spare[0];
fsd.f_bfree = fsd.f_spare[1];
fsd.f_bavail = fsd.f_spare[2];
}
# endif /* STATFS_TRUNCATES_BLOCK_COUNTS */
#endif /* STAT_STATFS2_BSIZE */
#ifdef STAT_STATFS2_FSIZE /* 4.4BSD */
struct statfs fsd;
if (statfs (path, &fsd) < 0)
return -1;
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
#endif /* STAT_STATFS2_FSIZE */
#ifdef STAT_STATFS4 /* SVR3, Dynix, Irix, AIX */
# if !_AIX && !defined _SEQUENT_ && !defined DOLPHIN
# define f_bavail f_bfree
# endif
struct statfs fsd;
if (statfs (path, &fsd, sizeof fsd, 0) < 0)
return -1;
/* Empirically, the block counts on most SVR3 and SVR3-derived
systems seem to always be in terms of 512-byte blocks,
no matter what value f_bsize has. */
# if _AIX || defined(_CRAY)
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
# else
fsp->fsu_blocksize = 512;
# endif
#endif /* STAT_STATFS4 */
#ifdef STAT_STATVFS /* SVR4 */
struct statvfs fsd;
if (statvfs (path, &fsd) < 0)
return -1;
/* f_frsize isn't guaranteed to be supported. */
fsp->fsu_blocksize =
PROPAGATE_ALL_ONES (fsd.f_frsize ? fsd.f_frsize : fsd.f_bsize);
#endif /* STAT_STATVFS */
#if !defined(STAT_STATFS2_FS_DATA) && !defined(STAT_READ_FILSYS)
/* !Ultrix && !SVR2 */
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.f_blocks);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.f_bfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.f_bavail);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.f_bavail) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.f_files);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.f_ffree);
#endif /* not STAT_STATFS2_FS_DATA && not STAT_READ_FILSYS */
return 0;
}
#if defined(_AIX) && defined(_I386)
/* AIX PS/2 does not supply statfs. */
int
statfs (char *path, struct statfs *fsb)
{
struct stat stats;
struct dustat fsd;
if (stat (path, &stats))
return -1;
if (dustat (stats.st_dev, 0, &fsd, sizeof (fsd)))
return -1;
fsb->f_type = 0;
fsb->f_bsize = fsd.du_bsize;
fsb->f_blocks = fsd.du_fsize - fsd.du_isize;
fsb->f_bfree = fsd.du_tfree;
fsb->f_bavail = fsd.du_tfree;
fsb->f_files = (fsd.du_isize - 2) * fsd.du_inopb;
fsb->f_ffree = fsd.du_tinode;
fsb->f_fsid.val[0] = fsd.du_site;
fsb->f_fsid.val[1] = fsd.du_pckno;
return 0;
}
#endif /* _AIX && _I386 */

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/* fsusage.h -- declarations for filesystem space usage info
Copyright (C) 1991, 1992, 1997 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Space usage statistics for a filesystem. Blocks are 512-byte. */
#if !defined FSUSAGE_H_
# define FSUSAGE_H_
struct fs_usage
{
int fsu_blocksize; /* Size of a block. */
uintmax_t fsu_blocks; /* Total blocks. */
uintmax_t fsu_bfree; /* Free blocks available to superuser. */
uintmax_t fsu_bavail; /* Free blocks available to non-superuser. */
int fsu_bavail_top_bit_set; /* 1 if fsu_bavail represents a value < 0. */
uintmax_t fsu_files; /* Total file nodes. */
uintmax_t fsu_ffree; /* Free file nodes. */
};
# ifndef PARAMS
# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
# define PARAMS(Args) Args
# else
# define PARAMS(Args) ()
# endif
# endif
int get_fs_usage PARAMS ((const char *path, const char *disk,
struct fs_usage *fsp));
#endif

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#serial 7
# From fileutils/configure.in
# Try to determine how a program can obtain filesystem usage information.
# If successful, define the appropriate symbol (see fsusage.c) and
# execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND.
#
# jm_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
AC_DEFUN(jm_FILE_SYSTEM_USAGE,
[
echo "checking how to get filesystem space usage..."
ac_fsusage_space=no
# Perform only the link test since it seems there are no variants of the
# statvfs function. This check is more than just AC_CHECK_FUNCS(statvfs)
# because that got a false positive on SCO OSR5. Adding the declaration
# of a `struct statvfs' causes this test to fail (as it should) on such
# systems. That system is reported to work fine with STAT_STATFS4 which
# is what it gets when this test fails.
if test $ac_fsusage_space = no; then
# SVR4
AC_CACHE_CHECK([for statvfs function (SVR4)], fu_cv_sys_stat_statvfs,
[AC_TRY_LINK([#include <sys/types.h>
#include <sys/statvfs.h>],
[struct statvfs fsd; statvfs (0, &fsd);],
fu_cv_sys_stat_statvfs=yes,
fu_cv_sys_stat_statvfs=no)])
if test $fu_cv_sys_stat_statvfs = yes; then
ac_fsusage_space=yes
AC_DEFINE_UNQUOTED(STAT_STATVFS, 1,
[ Define if there is a function named statvfs. (SVR4)])
fi
fi
if test $ac_fsusage_space = no; then
# DEC Alpha running OSF/1
AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs3_osf1,
[AC_TRY_RUN([
#include <sys/param.h>
#include <sys/types.h>
#include <sys/mount.h>
main ()
{
struct statfs fsd;
fsd.f_fsize = 0;
exit (statfs (".", &fsd, sizeof (struct statfs)));
}],
fu_cv_sys_stat_statfs3_osf1=yes,
fu_cv_sys_stat_statfs3_osf1=no,
fu_cv_sys_stat_statfs3_osf1=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs3_osf1)
if test $fu_cv_sys_stat_statfs3_osf1 = yes; then
ac_fsusage_space=yes
AC_DEFINE_UNQUOTED(STAT_STATFS3_OSF1, 1,
[ Define if statfs takes 3 args. (DEC Alpha running OSF/1)])
fi
fi
if test $ac_fsusage_space = no; then
# AIX
AC_MSG_CHECKING([for two-argument statfs with statfs.bsize dnl
member (AIX, 4.3BSD)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs2_bsize,
[AC_TRY_RUN([
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
main ()
{
struct statfs fsd;
fsd.f_bsize = 0;
exit (statfs (".", &fsd));
}],
fu_cv_sys_stat_statfs2_bsize=yes,
fu_cv_sys_stat_statfs2_bsize=no,
fu_cv_sys_stat_statfs2_bsize=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs2_bsize)
if test $fu_cv_sys_stat_statfs2_bsize = yes; then
ac_fsusage_space=yes
AC_DEFINE_UNQUOTED(STAT_STATFS2_BSIZE, 1,
[ Define if statfs takes 2 args and struct statfs has a field named f_bsize.
(4.3BSD, SunOS 4, HP-UX, AIX PS/2)])
fi
fi
if test $ac_fsusage_space = no; then
# SVR3
AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs4,
[AC_TRY_RUN([#include <sys/types.h>
#include <sys/statfs.h>
main ()
{
struct statfs fsd;
exit (statfs (".", &fsd, sizeof fsd, 0));
}],
fu_cv_sys_stat_statfs4=yes,
fu_cv_sys_stat_statfs4=no,
fu_cv_sys_stat_statfs4=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs4)
if test $fu_cv_sys_stat_statfs4 = yes; then
ac_fsusage_space=yes
AC_DEFINE_UNQUOTED(STAT_STATFS4, 1,
[ Define if statfs takes 4 args. (SVR3, Dynix, Irix, Dolphin)])
fi
fi
if test $ac_fsusage_space = no; then
# 4.4BSD and NetBSD
AC_MSG_CHECKING([for two-argument statfs with statfs.fsize dnl
member (4.4BSD and NetBSD)])
AC_CACHE_VAL(fu_cv_sys_stat_statfs2_fsize,
[AC_TRY_RUN([#include <sys/types.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
main ()
{
struct statfs fsd;
fsd.f_fsize = 0;
exit (statfs (".", &fsd));
}],
fu_cv_sys_stat_statfs2_fsize=yes,
fu_cv_sys_stat_statfs2_fsize=no,
fu_cv_sys_stat_statfs2_fsize=no)])
AC_MSG_RESULT($fu_cv_sys_stat_statfs2_fsize)
if test $fu_cv_sys_stat_statfs2_fsize = yes; then
ac_fsusage_space=yes
AC_DEFINE_UNQUOTED(STAT_STATFS2_FSIZE, 1,
[ Define if statfs takes 2 args and struct statfs has a field named f_fsize.
(4.4BSD, NetBSD)])
fi
fi
if test $ac_fsusage_space = no; then
# Ultrix
AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)])
AC_CACHE_VAL(fu_cv_sys_stat_fs_data,
[AC_TRY_RUN([#include <sys/types.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_FS_TYPES_H
#include <sys/fs_types.h>
#endif
main ()
{
struct fs_data fsd;
/* Ultrix's statfs returns 1 for success,
0 for not mounted, -1 for failure. */
exit (statfs (".", &fsd) != 1);
}],
fu_cv_sys_stat_fs_data=yes,
fu_cv_sys_stat_fs_data=no,
fu_cv_sys_stat_fs_data=no)])
AC_MSG_RESULT($fu_cv_sys_stat_fs_data)
if test $fu_cv_sys_stat_fs_data = yes; then
ac_fsusage_space=yes
AC_DEFINE_UNQUOTED(STAT_STATFS2_FS_DATA, 1,
[ Define if statfs takes 2 args and the second argument has
type struct fs_data. (Ultrix)])
fi
fi
if test $ac_fsusage_space = no; then
# SVR2
AC_TRY_CPP([#include <sys/filsys.h>
],
AC_DEFINE_UNQUOTED(STAT_READ_FILSYS, 1,
[Define if there is no specific function for reading filesystems usage
information and you have the <sys/filsys.h> header file. (SVR2)])
ac_fsusage_space=yes)
fi
dnl AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
if test $ac_fsusage_space = yes ; then [$1] ; else [$2] ; fi
])

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#serial 10
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.
dnl
# jm_LIST_MOUNTED_FILESYSTEMS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
AC_DEFUN(jm_LIST_MOUNTED_FILESYSTEMS,
[
AC_CHECK_FUNCS(listmntent getmntinfo)
AC_CHECK_HEADERS(mntent.h)
# Determine how to get the list of mounted filesystems.
ac_list_mounted_fs=
# If the getmntent function is available but not in the standard library,
# make sure LIBS contains -lsun (on Irix4) or -lseq (on PTX).
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 filesystems. (UNICOS)])
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,
[test $ac_cv_header_mntent_h = yes \
&& fu_cv_sys_mounted_getmntent1=yes \
|| fu_cv_sys_mounted_getmntent1=no])
AC_MSG_RESULT($fu_cv_sys_mounted_getmntent1)
if test $fu_cv_sys_mounted_getmntent1 = yes; then
ac_list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNTENT1, 1,
[Define if there is a function named getmntent for reading the list
of mounted filesystems, and that function takes a single argument.
(4.3BSD, SunOS, HP-UX, Dynix, Irix)])
fi
fi
if test -z "$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 $fu_cv_sys_mounted_getmntent2 = yes; then
ac_list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNTENT2, 1,
[Define if there is a function named getmntent for reading the list of
mounted filesystems, and that function takes two arguments. (SVR4)])
fi
fi
if test -z "$ac_list_mounted_fs"; then
AC_MSG_ERROR([could not determine how to read list of mounted filesystems])
fi
fi
if test -z "$ac_list_mounted_fs"; then
# DEC Alpha running OSF/1.
AC_MSG_CHECKING([for getfsstat function])
AC_CACHE_VAL(fu_cv_sys_mounted_getsstat,
[AC_TRY_LINK([
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/fs_types.h>],
[struct statfs *stats;
int numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT); ],
fu_cv_sys_mounted_getsstat=yes,
fu_cv_sys_mounted_getsstat=no)])
AC_MSG_RESULT($fu_cv_sys_mounted_getsstat)
if test $fu_cv_sys_mounted_getsstat = yes; then
ac_list_mounted_fs=found
AC_DEFINE(MOUNTED_GETFSSTAT, 1,
[Define if there is a function named getfsstat for reading the
list of mounted filesystems. (DEC Alpha running OSF/1)])
fi
fi
if test -z "$ac_list_mounted_fs"; then
# AIX.
AC_MSG_CHECKING([for mntctl function and struct vmount])
AC_CACHE_VAL(fu_cv_sys_mounted_vmount,
[AC_TRY_CPP([#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 $fu_cv_sys_mounted_vmount = yes; then
ac_list_mounted_fs=found
AC_DEFINE(MOUNTED_VMOUNT, 1,
[Define if there is a function named mntctl that can be used to read
the list of mounted filesystems, and there is a system header file
that declares `struct vmount.' (AIX)])
fi
fi
if test -z "$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_TRY_CPP([
#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 $fu_cv_sys_mounted_fread_fstyp = yes; then
ac_list_mounted_fs=found
AC_DEFINE(MOUNTED_FREAD_FSTYP, 1,
[Define if (like SVR2) there is no specific function for reading the
list of mounted filesystems, and your system has these header files:
<sys/fstyp.h> and <sys/statfs.h>. (SVR3)])
fi
fi
if test -z "$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,
[
ok=
if test $ac_cv_func_getmntinfo = yes; then
AC_EGREP_HEADER(f_type;, sys/mount.h,
ok=yes)
fi
test -n "$ok" \
&& fu_cv_sys_mounted_getmntinfo=yes \
|| fu_cv_sys_mounted_getmntinfo=no
])
AC_MSG_RESULT($fu_cv_sys_mounted_getmntinfo)
if test $fu_cv_sys_mounted_getmntinfo = yes; then
ac_list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNTINFO, 1,
[Define if there is a function named getmntinfo for reading the
list of mounted filesystems. (4.4BSD)])
fi
fi
if test -z "$ac_list_mounted_fs"; then
# Ultrix
AC_MSG_CHECKING([for getmnt function])
AC_CACHE_VAL(fu_cv_sys_mounted_getmnt,
[AC_TRY_CPP([
#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 $fu_cv_sys_mounted_getmnt = yes; then
ac_list_mounted_fs=found
AC_DEFINE(MOUNTED_GETMNT, 1,
[Define if there is a function named getmnt for reading the list of
mounted filesystems. (Ultrix)])
fi
fi
if test -z "$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 $fu_result = yes; then
ac_list_mounted_fs=found
AC_DEFINE(MOUNTED_FS_STAT_DEV, 1,
[Define if there are functions named next_dev and fs_stat_dev for
reading the list of mounted filesystems. (BeOS)])
fi
fi
if test -z "$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_TRY_CPP([#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 $fu_cv_sys_mounted_fread = yes; then
ac_list_mounted_fs=found
AC_DEFINE(MOUNTED_FREAD, 1,
[Define if there is no specific function for reading the list of
mounted filesystems. fread will be used to read /etc/mnttab. (SVR2) ])
fi
fi
if test -z "$ac_list_mounted_fs"; then
AC_MSG_ERROR([could not determine how to read list of mounted filesystems])
# FIXME -- no need to abort building the whole package
# Can't build mountlist.c or anything that needs its functions
fi
dnl AS_IF([test $ac_list_mounted_fs = found], [$1], [$2])
if test $ac_list_mounted_fs = found ; then [$1] ; else [$2] ; fi
])

788
lib/mountlist.c Normal file
View file

@ -0,0 +1,788 @@
/* mountlist.c -- return a list of mounted filesystems
Copyright (C) 1991, 1992, 1997-2000 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "../plugins/config.h"
#include <stdio.h>
#include <sys/types.h>
#include "mountlist.h"
#ifdef STDC_HEADERS
# include <stdlib.h>
#else
void free ();
#endif
#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
# include <string.h>
#else
# include <strings.h>
#endif
#ifndef strstr
char *strstr ();
#endif
char *xmalloc ();
char *xrealloc ();
char *xstrdup ();
#include <errno.h>
#ifndef errno
extern int errno;
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#if HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#if defined (MOUNTED_GETFSSTAT) /* __alpha running OSF_1 */
# include <sys/mount.h>
# include <sys/fs_types.h>
#endif /* MOUNTED_GETFSSTAT */
#ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */
# include <mntent.h>
# if !defined(MOUNTED)
# if defined(MNT_MNTTAB) /* HP-UX. */
# define MOUNTED MNT_MNTTAB
# endif
# if defined(MNTTABNAME) /* Dynix. */
# define MOUNTED MNTTABNAME
# endif
# endif
#endif
#ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */
# include <sys/mount.h>
#endif
#ifdef MOUNTED_GETMNT /* Ultrix. */
# include <sys/mount.h>
# include <sys/fs_types.h>
#endif
#ifdef MOUNTED_FS_STAT_DEV /* BeOS. */
# include <fs_info.h>
# include <dirent.h>
#endif
#ifdef MOUNTED_FREAD /* SVR2. */
# include <mnttab.h>
#endif
#ifdef MOUNTED_FREAD_FSTYP /* SVR3. */
# include <mnttab.h>
# include <sys/fstyp.h>
# include <sys/statfs.h>
#endif
#ifdef MOUNTED_LISTMNTENT
# include <mntent.h>
#endif
#ifdef MOUNTED_GETMNTENT2 /* SVR4. */
# include <sys/mnttab.h>
#endif
#ifdef MOUNTED_VMOUNT /* AIX. */
# include <fshelp.h>
# include <sys/vfs.h>
#endif
#ifdef DOLPHIN
/* So special that it's not worth putting this in autoconf. */
# undef MOUNTED_FREAD_FSTYP
# define MOUNTED_GETMNTTBL
#endif
#if HAVE_SYS_MNTENT_H
/* This is to get MNTOPT_IGNORE on e.g. SVR4. */
# include <sys/mntent.h>
#endif
#if defined (MNTOPT_IGNORE) && defined (HAVE_HASMNTOPT)
# define MNT_IGNORE(M) hasmntopt ((M), MNTOPT_IGNORE)
#else
# define MNT_IGNORE(M) 0
#endif
#ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */
/* Return the value of the hexadecimal number represented by CP.
No prefix (like '0x') or suffix (like 'h') is expected to be
part of CP. */
/* FIXME: this can overflow */
static int
xatoi (char *cp)
{
int val;
val = 0;
while (*cp)
{
if (*cp >= 'a' && *cp <= 'f')
val = val * 16 + *cp - 'a' + 10;
else if (*cp >= 'A' && *cp <= 'F')
val = val * 16 + *cp - 'A' + 10;
else if (*cp >= '0' && *cp <= '9')
val = val * 16 + *cp - '0';
else
break;
cp++;
}
return val;
}
#endif /* MOUNTED_GETMNTENT1. */
#if MOUNTED_GETMNTINFO
# if ! HAVE_F_FSTYPENAME_IN_STATFS
static char *
fstype_to_string (short t)
{
switch (t)
{
# ifdef MOUNT_PC
case MOUNT_PC:
return "pc";
# endif
# ifdef MOUNT_MFS
case MOUNT_MFS:
return "mfs";
# endif
# ifdef MOUNT_LO
case MOUNT_LO:
return "lo";
# endif
# ifdef MOUNT_TFS
case MOUNT_TFS:
return "tfs";
# endif
# ifdef MOUNT_TMP
case MOUNT_TMP:
return "tmp";
# endif
# ifdef MOUNT_UFS
case MOUNT_UFS:
return "ufs" ;
# endif
# ifdef MOUNT_NFS
case MOUNT_NFS:
return "nfs" ;
# endif
# ifdef MOUNT_MSDOS
case MOUNT_MSDOS:
return "msdos" ;
# endif
# ifdef MOUNT_LFS
case MOUNT_LFS:
return "lfs" ;
# endif
# ifdef MOUNT_LOFS
case MOUNT_LOFS:
return "lofs" ;
# endif
# ifdef MOUNT_FDESC
case MOUNT_FDESC:
return "fdesc" ;
# endif
# ifdef MOUNT_PORTAL
case MOUNT_PORTAL:
return "portal" ;
# endif
# ifdef MOUNT_NULL
case MOUNT_NULL:
return "null" ;
# endif
# ifdef MOUNT_UMAP
case MOUNT_UMAP:
return "umap" ;
# endif
# ifdef MOUNT_KERNFS
case MOUNT_KERNFS:
return "kernfs" ;
# endif
# ifdef MOUNT_PROCFS
case MOUNT_PROCFS:
return "procfs" ;
# endif
# ifdef MOUNT_AFS
case MOUNT_AFS:
return "afs" ;
# endif
# ifdef MOUNT_CD9660
case MOUNT_CD9660:
return "cd9660" ;
# endif
# ifdef MOUNT_UNION
case MOUNT_UNION:
return "union" ;
# endif
# ifdef MOUNT_DEVFS
case MOUNT_DEVFS:
return "devfs" ;
# endif
# ifdef MOUNT_EXT2FS
case MOUNT_EXT2FS:
return "ext2fs" ;
# endif
default:
return "?";
}
}
# endif /* ! HAVE_F_FSTYPENAME_IN_STATFS */
/* __NetBSD__ || BSD_NET2 || __OpenBSD__ */
static char *
fsp_to_string (const struct statfs *fsp)
{
# if defined HAVE_F_FSTYPENAME_IN_STATFS
return (char *) (fsp->f_fstypename);
# else
return fstype_to_string (fsp->f_type);
# endif
}
#endif /* MOUNTED_GETMNTINFO */
#ifdef MOUNTED_VMOUNT /* AIX. */
static char *
fstype_to_string (int t)
{
struct vfs_ent *e;
e = getvfsbytype (t);
if (!e || !e->vfsent_name)
return "none";
else
return e->vfsent_name;
}
#endif /* MOUNTED_VMOUNT */
/* Return a list of the currently mounted filesystems, or NULL on error.
Add each entry to the tail of the list so that they stay in order.
If NEED_FS_TYPE is nonzero, ensure that the filesystem type fields in
the returned list are valid. Otherwise, they might not be. */
struct mount_entry *
read_filesystem_list (int need_fs_type)
{
struct mount_entry *mount_list;
struct mount_entry *me;
struct mount_entry **mtail = &mount_list;
#ifdef MOUNTED_LISTMNTENT
{
struct tabmntent *mntlist, *p;
struct mntent *mnt;
struct mount_entry *me;
/* the third and fourth arguments could be used to filter mounts,
but Crays doesn't seem to have any mounts that we want to
remove. Specifically, automount create normal NFS mounts.
*/
if(listmntent(&mntlist, KMTAB, NULL, NULL) < 0)
return NULL;
for (p = mntlist; p; p = p->next) {
mnt = p->ment;
me = (struct mount_entry*) xmalloc(sizeof (struct mount_entry));
me->me_devname = xstrdup(mnt->mnt_fsname);
me->me_mountdir = xstrdup(mnt->mnt_dir);
me->me_type = xstrdup(mnt->mnt_type);
me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
me->me_dev = -1;
*mtail = me;
mtail = &me->me_next;
}
freemntlist(mntlist);
}
#endif
#ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */
{
struct mntent *mnt;
char *table = MOUNTED;
FILE *fp;
char *devopt;
fp = setmntent (table, "r");
if (fp == NULL)
return NULL;
while ((mnt = getmntent (fp)))
{
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup (mnt->mnt_fsname);
me->me_mountdir = xstrdup (mnt->mnt_dir);
me->me_type = xstrdup (mnt->mnt_type);
me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
devopt = strstr (mnt->mnt_opts, "dev=");
if (devopt)
{
if (devopt[4] == '0' && (devopt[5] == 'x' || devopt[5] == 'X'))
me->me_dev = xatoi (devopt + 6);
else
me->me_dev = xatoi (devopt + 4);
}
else
me->me_dev = (dev_t) -1; /* Magic; means not known yet. */
/* Add to the linked list. */
*mtail = me;
mtail = &me->me_next;
}
if (endmntent (fp) == 0)
goto free_then_fail;
}
#endif /* MOUNTED_GETMNTENT1. */
#ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */
{
struct statfs *fsp;
int entries;
entries = getmntinfo (&fsp, MNT_NOWAIT);
if (entries < 0)
return NULL;
for (; entries-- > 0; fsp++)
{
char *fs_type = fsp_to_string (fsp);
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup (fsp->f_mntfromname);
me->me_mountdir = xstrdup (fsp->f_mntonname);
me->me_type = fs_type;
me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
me->me_dev = (dev_t) -1; /* Magic; means not known yet. */
/* Add to the linked list. */
*mtail = me;
mtail = &me->me_next;
}
}
#endif /* MOUNTED_GETMNTINFO */
#ifdef MOUNTED_GETMNT /* Ultrix. */
{
int offset = 0;
int val;
struct fs_data fsd;
while (errno = 0,
0 < (val = getmnt (&offset, &fsd, sizeof (fsd), NOSTAT_MANY,
(char *) 0)))
{
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup (fsd.fd_req.devname);
me->me_mountdir = xstrdup (fsd.fd_req.path);
me->me_type = gt_names[fsd.fd_req.fstype];
me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
me->me_dev = fsd.fd_req.dev;
/* Add to the linked list. */
*mtail = me;
mtail = &me->me_next;
}
if (val < 0)
goto free_then_fail;
}
#endif /* MOUNTED_GETMNT. */
#if defined (MOUNTED_FS_STAT_DEV) /* BeOS */
{
/* The next_dev() and fs_stat_dev() system calls give the list of
all filesystems, including the information returned by statvfs()
(fs type, total blocks, free blocks etc.), but without the mount
point. But on BeOS all filesystems except / are mounted in the
rootfs, directly under /.
The directory name of the mount point is often, but not always,
identical to the volume name of the device.
We therefore get the list of subdirectories of /, and the list
of all filesystems, and match the two lists. */
DIR *dirp;
struct rootdir_entry
{
char *name;
dev_t dev;
ino_t ino;
struct rootdir_entry *next;
};
struct rootdir_entry *rootdir_list;
struct rootdir_entry **rootdir_tail;
int32 pos;
dev_t dev;
fs_info fi;
/* All volumes are mounted in the rootfs, directly under /. */
rootdir_list = NULL;
rootdir_tail = &rootdir_list;
dirp = opendir ("/");
if (dirp)
{
struct dirent *d;
while ((d = readdir (dirp)) != NULL)
{
char *name;
struct stat statbuf;
if (strcmp (d->d_name, "..") == 0)
continue;
if (strcmp (d->d_name, ".") == 0)
name = xstrdup ("/");
else
{
name = xmalloc (1 + strlen (d->d_name) + 1);
name[0] = '/';
strcpy (name + 1, d->d_name);
}
if (lstat (name, &statbuf) >= 0 && S_ISDIR (statbuf.st_mode))
{
struct rootdir_entry *re;
re = (struct rootdir_entry *) xmalloc (sizeof (struct rootdir_entry));
re->name = name;
re->dev = statbuf.st_dev;
re->ino = statbuf.st_ino;
/* Add to the linked list. */
*rootdir_tail = re;
rootdir_tail = &re->next;
}
else
free (name);
}
closedir (dirp);
}
*rootdir_tail = NULL;
for (pos = 0; (dev = next_dev (&pos)) >= 0; )
if (fs_stat_dev (dev, &fi) >= 0)
{
/* Note: fi.dev == dev. */
struct rootdir_entry *re;
for (re = rootdir_list; re; re = re->next)
if (re->dev == fi.dev && re->ino == fi.root)
break;
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup (fi.device_name[0] != '\0' ? fi.device_name : fi.fsh_name);
me->me_mountdir = xstrdup (re != NULL ? re->name : fi.fsh_name);
me->me_type = xstrdup (fi.fsh_name);
me->me_dev = fi.dev;
me->me_dummy = 0;
me->me_remote = (fi.flags & B_FS_IS_SHARED) != 0;
/* Add to the linked list. */
*mtail = me;
mtail = &me->me_next;
}
*mtail = NULL;
while (rootdir_list != NULL)
{
struct rootdir_entry *re = rootdir_list;
rootdir_list = re->next;
free (re->name);
free (re);
}
}
#endif /* MOUNTED_FS_STAT_DEV */
#if defined (MOUNTED_GETFSSTAT) /* __alpha running OSF_1 */
{
int numsys, counter, bufsize;
struct statfs *stats;
numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT);
if (numsys < 0)
return (NULL);
bufsize = (1 + numsys) * sizeof (struct statfs);
stats = (struct statfs *)xmalloc (bufsize);
numsys = getfsstat (stats, bufsize, MNT_WAIT);
if (numsys < 0)
{
free (stats);
return (NULL);
}
for (counter = 0; counter < numsys; counter++)
{
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup (stats[counter].f_mntfromname);
me->me_mountdir = xstrdup (stats[counter].f_mntonname);
me->me_type = mnt_names[stats[counter].f_type];
me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
me->me_dev = (dev_t) -1; /* Magic; means not known yet. */
/* Add to the linked list. */
*mtail = me;
mtail = &me->me_next;
}
free (stats);
}
#endif /* MOUNTED_GETFSSTAT */
#if defined (MOUNTED_FREAD) || defined (MOUNTED_FREAD_FSTYP) /* SVR[23]. */
{
struct mnttab mnt;
char *table = "/etc/mnttab";
FILE *fp;
fp = fopen (table, "r");
if (fp == NULL)
return NULL;
while (fread (&mnt, sizeof mnt, 1, fp) > 0)
{
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
# ifdef GETFSTYP /* SVR3. */
me->me_devname = xstrdup (mnt.mt_dev);
# else
me->me_devname = xmalloc (strlen (mnt.mt_dev) + 6);
strcpy (me->me_devname, "/dev/");
strcpy (me->me_devname + 5, mnt.mt_dev);
# endif
me->me_mountdir = xstrdup (mnt.mt_filsys);
me->me_dev = (dev_t) -1; /* Magic; means not known yet. */
me->me_type = "";
# ifdef GETFSTYP /* SVR3. */
if (need_fs_type)
{
struct statfs fsd;
char typebuf[FSTYPSZ];
if (statfs (me->me_mountdir, &fsd, sizeof fsd, 0) != -1
&& sysfs (GETFSTYP, fsd.f_fstyp, typebuf) != -1)
me->me_type = xstrdup (typebuf);
}
# endif
me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
/* Add to the linked list. */
*mtail = me;
mtail = &me->me_next;
}
if (ferror (fp))
{
int saved_errno = errno;
fclose (fp);
errno = saved_errno;
goto free_then_fail;
}
if (fclose (fp) == EOF)
goto free_then_fail;
}
#endif /* MOUNTED_FREAD || MOUNTED_FREAD_FSTYP. */
#ifdef MOUNTED_GETMNTTBL /* DolphinOS goes it's own way */
{
struct mntent **mnttbl=getmnttbl(),**ent;
for (ent=mnttbl;*ent;ent++)
{
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup ( (*ent)->mt_resource);
me->me_mountdir = xstrdup( (*ent)->mt_directory);
me->me_type = xstrdup ((*ent)->mt_fstype);
me->me_dummy = ME_DUMMY (me->me_devname, me->me_type);
me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
me->me_dev = (dev_t) -1; /* Magic; means not known yet. */
/* Add to the linked list. */
*mtail = me;
mtail = &me->me_next;
}
endmnttbl();
}
#endif
#ifdef MOUNTED_GETMNTENT2 /* SVR4. */
{
struct mnttab mnt;
char *table = MNTTAB;
FILE *fp;
int ret;
int lockfd = -1;
# if defined F_RDLCK && defined F_SETLKW
/* MNTTAB_LOCK is a macro name of our own invention; it's not present in
e.g. Solaris 2.6. If the SVR4 folks ever define a macro
for this file name, we should use their macro name instead.
(Why not just lock MNTTAB directly? We don't know.) */
# ifndef MNTTAB_LOCK
# define MNTTAB_LOCK "/etc/.mnttab.lock"
# endif
lockfd = open (MNTTAB_LOCK, O_RDONLY);
if (0 <= lockfd)
{
struct flock flock;
flock.l_type = F_RDLCK;
flock.l_whence = SEEK_SET;
flock.l_start = 0;
flock.l_len = 0;
while (fcntl (lockfd, F_SETLKW, &flock) == -1)
if (errno != EINTR)
{
int saved_errno = errno;
close (lockfd);
errno = saved_errno;
return NULL;
}
}
else if (errno != ENOENT)
return NULL;
# endif
errno = 0;
fp = fopen (table, "r");
if (fp == NULL)
ret = errno;
else
{
while ((ret = getmntent (fp, &mnt)) == 0)
{
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
me->me_devname = xstrdup (mnt.mnt_special);
me->me_mountdir = xstrdup (mnt.mnt_mountp);
me->me_type = xstrdup (mnt.mnt_fstype);
me->me_dummy = MNT_IGNORE (&mnt) != 0;
me->me_remote = ME_REMOTE (me->me_devname, me->me_type);
me->me_dev = (dev_t) -1; /* Magic; means not known yet. */
/* Add to the linked list. */
*mtail = me;
mtail = &me->me_next;
}
ret = fclose (fp) == EOF ? errno : 0 < ret ? 0 : -1;
}
if (0 <= lockfd && close (lockfd) != 0)
ret = errno;
if (0 <= ret)
{
errno = ret;
goto free_then_fail;
}
}
#endif /* MOUNTED_GETMNTENT2. */
#ifdef MOUNTED_VMOUNT /* AIX. */
{
int bufsize;
char *entries, *thisent;
struct vmount *vmp;
/* Ask how many bytes to allocate for the mounted filesystem info. */
mntctl (MCTL_QUERY, sizeof bufsize, (struct vmount *) &bufsize);
entries = xmalloc (bufsize);
/* Get the list of mounted filesystems. */
mntctl (MCTL_QUERY, bufsize, (struct vmount *) entries);
for (thisent = entries; thisent < entries + bufsize;
thisent += vmp->vmt_length)
{
char *options, *ignore;
vmp = (struct vmount *) thisent;
me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry));
if (vmp->vmt_flags & MNT_REMOTE)
{
char *host, *path;
me->me_remote = 1;
/* Prepend the remote pathname. */
host = thisent + vmp->vmt_data[VMT_HOSTNAME].vmt_off;
path = thisent + vmp->vmt_data[VMT_OBJECT].vmt_off;
me->me_devname = xmalloc (strlen (host) + strlen (path) + 2);
strcpy (me->me_devname, host);
strcat (me->me_devname, ":");
strcat (me->me_devname, path);
}
else
{
me->me_remote = 0;
me->me_devname = xstrdup (thisent +
vmp->vmt_data[VMT_OBJECT].vmt_off);
}
me->me_mountdir = xstrdup (thisent + vmp->vmt_data[VMT_STUB].vmt_off);
me->me_type = xstrdup (fstype_to_string (vmp->vmt_gfstype));
options = thisent + vmp->vmt_data[VMT_ARGS].vmt_off;
ignore = strstr (options, "ignore");
me->me_dummy = (ignore
&& (ignore == options || ignore[-1] == ',')
&& (ignore[sizeof "ignore" - 1] == ','
|| ignore[sizeof "ignore" - 1] == '\0'));
me->me_dev = (dev_t) -1; /* vmt_fsid might be the info we want. */
/* Add to the linked list. */
*mtail = me;
mtail = &me->me_next;
}
free (entries);
}
#endif /* MOUNTED_VMOUNT. */
*mtail = NULL;
return mount_list;
free_then_fail:
{
int saved_errno = errno;
*mtail = NULL;
while (mount_list)
{
me = mount_list->me_next;
free (mount_list->me_devname);
free (mount_list->me_mountdir);
/* FIXME: me_type is not always malloced. */
free (mount_list);
mount_list = me;
}
errno = saved_errno;
return NULL;
}
}

50
lib/mountlist.h Normal file
View file

@ -0,0 +1,50 @@
/* mountlist.h -- declarations for list of mounted filesystems
Copyright (C) 1991, 1992, 1998, 2000 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* A mount table entry. */
struct mount_entry
{
char *me_devname; /* Device node pathname, including "/dev/". */
char *me_mountdir; /* Mount point directory pathname. */
char *me_type; /* "nfs", "4.2", etc. */
dev_t me_dev; /* Device number of me_mountdir. */
unsigned int me_dummy : 1; /* Nonzero for dummy filesystems. */
unsigned int me_remote : 1; /* Nonzero for remote fileystems. */
struct mount_entry *me_next;
};
#ifndef PARAMS
# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
# define PARAMS(Args) Args
# else
# define PARAMS(Args) ()
# endif
#endif
struct mount_entry *read_filesystem_list PARAMS ((int need_fs_type));
#ifndef ME_DUMMY
# define ME_DUMMY(fs_name, fs_type) \
(!strcmp (fs_type, "auto") \
|| !strcmp (fs_type, "autofs") \
/* for Irix 6.5 */ \
|| !strcmp (fs_type, "ignore"))
#endif
#ifndef ME_REMOTE
# define ME_REMOTE(fs_name, fs_type) (strchr (fs_name, ':') != 0)
#endif