X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Ffsusage.m4;h=5203bbc6ded5cddcd5ffb65a0fc3e3beeacacd82;hb=7ef6c64e210ac0979d7e8ac69bc5b5208c2405ab;hp=216b9dd8eabbf6921a1db38cad761b6bc24e945c;hpb=b2e2010c7c902235b5efb5bd3c6529f61b093aa4;p=gnulib.git diff --git a/m4/fsusage.m4 b/m4/fsusage.m4 index 216b9dd8e..5203bbc6d 100644 --- a/m4/fsusage.m4 +++ b/m4/fsusage.m4 @@ -1,7 +1,7 @@ -# serial 25 +# serial 30 # Obtaining file system usage information. -# Copyright (C) 1997-1998, 2000-2001, 2003-2010 Free Software Foundation, Inc. +# Copyright (C) 1997-1998, 2000-2001, 2003-2014 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, @@ -19,10 +19,6 @@ AC_DEFUN([gl_FSUSAGE], #include #endif]]) gl_FILE_SYSTEM_USAGE([gl_cv_fs_space=yes], [gl_cv_fs_space=no]) - if test $gl_cv_fs_space = yes; then - AC_LIBOBJ([fsusage]) - gl_PREREQ_FSUSAGE_EXTRA - fi ]) # Try to determine how a program can obtain file system usage information. @@ -33,6 +29,12 @@ AC_DEFUN([gl_FSUSAGE], AC_DEFUN([gl_FILE_SYSTEM_USAGE], [ +dnl Enable large-file support. This has the effect of changing the size +dnl of field f_blocks in 'struct statvfs' from 32 bit to 64 bit on +dnl glibc/Hurd, HP-UX 11, Solaris (32-bit mode). It also changes the size +dnl of field f_blocks in 'struct statfs' from 32 bit to 64 bit on +dnl Mac OS X >= 10.5 (32-bit mode). +AC_REQUIRE([AC_SYS_LARGEFILE]) AC_MSG_NOTICE([checking how to get file system space usage]) ac_fsusage_space=no @@ -40,36 +42,98 @@ 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 +# 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 + # glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0, + # OpenBSD >= 4.4, AIX, HP-UX, IRIX, Solaris, Cygwin, Interix, BeOS. AC_CACHE_CHECK([for statvfs function (SVR4)], [fu_cv_sys_stat_statvfs], [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include -#if defined __GLIBC__ && defined __linux__ -Do not use statvfs on systems with GNU libc on Linux, because that function -stats all preceding entries in /proc/mounts, and that makes df hang if even -one of the corresponding file systems is hard-mounted, but not available. -statvfs in GNU libc on Hurd, BeOS, Haiku operates differently: it only makes -a system call. -#endif - #ifdef __osf__ "Do not use Tru64's statvfs implementation" #endif -#include ]], - [[struct statvfs fsd; statvfs (0, &fsd);]])], +#include + +struct statvfs fsd; + +#if defined __APPLE__ && defined __MACH__ +#include +/* On Mac OS X >= 10.5, f_blocks in 'struct statvfs' is a 32-bit quantity; + that commonly limits file systems to 4 TiB. Whereas f_blocks in + 'struct statfs' is a 64-bit type, thanks to the large-file support + that was enabled above. In this case, don't use statvfs(); use statfs() + instead. */ +int check_f_blocks_size[sizeof fsd.f_blocks * CHAR_BIT <= 32 ? -1 : 1]; +#endif +]], + [[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([STAT_STATVFS], [1], - [ Define if there is a function named statvfs. (SVR4)]) + # AIX >= 5.2 has statvfs64 that has a wider f_blocks field than statvfs. + # glibc, HP-UX, IRIX, Solaris have statvfs64 as well, but on these systems + # statvfs with large-file support is already equivalent to statvfs64. + AC_CACHE_CHECK([whether to use statvfs64], + [fu_cv_sys_stat_statvfs64], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[#include + #include + struct statvfs64 fsd; + int check_f_blocks_larger_in_statvfs64 + [sizeof (((struct statvfs64 *) 0)->f_blocks) + > sizeof (((struct statvfs *) 0)->f_blocks) + ? 1 : -1]; + ]], + [[statvfs64 (0, &fsd);]])], + [fu_cv_sys_stat_statvfs64=yes], + [fu_cv_sys_stat_statvfs64=no]) + ]) + if test $fu_cv_sys_stat_statvfs64 = yes; then + AC_DEFINE([STAT_STATVFS64], [1], + [ Define if statvfs64 should be preferred over statvfs.]) + else + AC_DEFINE([STAT_STATVFS], [1], + [ Define if there is a function named statvfs. (SVR4)]) + fi fi fi +# Check for this unconditionally so we have a +# good fallback on glibc/Linux > 2.6 < 2.6.36 +AC_MSG_CHECKING([for two-argument statfs with statfs.f_frsize member]) +AC_CACHE_VAL([fu_cv_sys_stat_statfs2_frsize], +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#ifdef HAVE_SYS_PARAM_H +#include +#endif +#ifdef HAVE_SYS_MOUNT_H +#include +#endif +#ifdef HAVE_SYS_VFS_H +#include +#endif + int + main () + { + struct statfs fsd; + fsd.f_frsize = 0; + return statfs (".", &fsd) != 0; + }]])], + [fu_cv_sys_stat_statfs2_frsize=yes], + [fu_cv_sys_stat_statfs2_frsize=no], + [fu_cv_sys_stat_statfs2_frsize=no])]) +AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_frsize]) +if test $fu_cv_sys_stat_statfs2_frsize = yes; then + ac_fsusage_space=yes + AC_DEFINE([STAT_STATFS2_FRSIZE], [1], +[ Define if statfs takes 2 args and struct statfs has a field named f_frsize. + (glibc/Linux > 2.6)]) +fi + if test $ac_fsusage_space = no; then # DEC Alpha running OSF/1 AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)]) @@ -97,8 +161,13 @@ if test $ac_fsusage_space = no; then fi if test $ac_fsusage_space = no; then -# AIX - AC_MSG_CHECKING([for two-argument statfs with statfs.bsize dnl + # glibc/Linux, Mac OS X, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4. + # (glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0, + # OpenBSD >= 4.4, AIX, HP-UX, OSF/1, Cygwin already handled above.) + # (On IRIX you need to include , not only and + # .) + # (On Solaris, statfs has 4 arguments.) + AC_MSG_CHECKING([for two-argument statfs with statfs.f_bsize dnl member (AIX, 4.3BSD)]) AC_CACHE_VAL([fu_cv_sys_stat_statfs2_bsize], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ @@ -131,7 +200,8 @@ member (AIX, 4.3BSD)]) fi if test $ac_fsusage_space = no; then -# SVR3 + # SVR3 + # (Solaris already handled above.) AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)]) AC_CACHE_VAL([fu_cv_sys_stat_statfs4], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ @@ -150,13 +220,17 @@ if test $ac_fsusage_space = no; then if test $fu_cv_sys_stat_statfs4 = yes; then ac_fsusage_space=yes AC_DEFINE([STAT_STATFS4], [1], - [ Define if statfs takes 4 args. (SVR3, Dynix, Irix, Dolphin)]) + [ Define if statfs takes 4 args. (SVR3, Dynix, old Irix, old AIX, 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 + # 4.4BSD and older NetBSD + # (OSF/1 already handled above.) + # (On AIX, you need to include , not only .) + # (On Solaris, statfs has 4 arguments and 'struct statfs' is not declared in + # .) + AC_MSG_CHECKING([for two-argument statfs with statfs.f_fsize dnl member (4.4BSD and NetBSD)]) AC_CACHE_VAL([fu_cv_sys_stat_statfs2_fsize], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ @@ -223,6 +297,7 @@ fi if test $ac_fsusage_space = no; then # SVR2 + # (AIX, HP-UX, OSF/1 already handled above.) AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include ]])], [AC_DEFINE([STAT_READ_FILSYS], [1],