# serial 31 # Obtaining file system usage information. # Copyright (C) 1997-1998, 2000-2001, 2003-2016 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. # Written by Jim Meyering. AC_DEFUN([gl_FSUSAGE], [ AC_CHECK_HEADERS_ONCE([sys/param.h]) AC_CHECK_HEADERS_ONCE([sys/vfs.h sys/fs_types.h]) AC_CHECK_HEADERS([sys/mount.h], [], [], [AC_INCLUDES_DEFAULT [#if HAVE_SYS_PARAM_H #include #endif]]) gl_FILE_SYSTEM_USAGE([gl_cv_fs_space=yes], [gl_cv_fs_space=no]) ]) # Try to determine how a program can obtain file system usage information. # If successful, define the appropriate symbol (see fsusage.c) and # execute ACTION-IF-FOUND. Otherwise, execute ACTION-IF-NOT-FOUND. # # gl_FILE_SYSTEM_USAGE([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) 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_CHECKING([how to get file system 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 # 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 #ifdef __osf__ "Do not use Tru64's statvfs implementation" #endif #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 # 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 $ac_fsusage_space = no; then # DEC Alpha running OSF/1 AC_MSG_CHECKING([for 3-argument statfs function (DEC OSF/1)]) AC_CACHE_VAL([fu_cv_sys_stat_statfs3_osf1], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include int main () { struct statfs fsd; fsd.f_fsize = 0; return statfs (".", &fsd, sizeof (struct statfs)) != 0; }]])], [fu_cv_sys_stat_statfs3_osf1=yes], [fu_cv_sys_stat_statfs3_osf1=no], [fu_cv_sys_stat_statfs3_osf1=no])]) AC_MSG_RESULT([$fu_cv_sys_stat_statfs3_osf1]) if test $fu_cv_sys_stat_statfs3_osf1 = yes; then ac_fsusage_space=yes AC_DEFINE([STAT_STATFS3_OSF1], [1], [ Define if statfs takes 3 args. (DEC Alpha running OSF/1)]) fi fi if test $ac_fsusage_space = no; then # glibc/Linux, Mac OS X, FreeBSD < 5.0, NetBSD < 3.0, OpenBSD < 4.4. # (glibc/{Hurd,kFreeBSD}, FreeBSD >= 5.0, NetBSD >= 3.0, # OpenBSD >= 4.4, AIX, HP-UX, OSF/1, Cygwin already handled above.) # (On IRIX you need to include , not only and # .) # (On Solaris, statfs has 4 arguments.) AC_MSG_CHECKING([for two-argument statfs with statfs.f_bsize dnl member (AIX, 4.3BSD)]) AC_CACHE_VAL([fu_cv_sys_stat_statfs2_bsize], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #ifdef HAVE_SYS_PARAM_H #include #endif #ifdef HAVE_SYS_MOUNT_H #include #endif #ifdef HAVE_SYS_VFS_H #include #endif int main () { struct statfs fsd; fsd.f_bsize = 0; return statfs (".", &fsd) != 0; }]])], [fu_cv_sys_stat_statfs2_bsize=yes], [fu_cv_sys_stat_statfs2_bsize=no], [fu_cv_sys_stat_statfs2_bsize=no])]) AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_bsize]) if test $fu_cv_sys_stat_statfs2_bsize = yes; then ac_fsusage_space=yes AC_DEFINE([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 $ac_fsusage_space = no; then # SVR3 # (Solaris already handled above.) AC_MSG_CHECKING([for four-argument statfs (AIX-3.2.5, SVR3)]) AC_CACHE_VAL([fu_cv_sys_stat_statfs4], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main () { struct statfs fsd; return statfs (".", &fsd, sizeof fsd, 0) != 0; }]])], [fu_cv_sys_stat_statfs4=yes], [fu_cv_sys_stat_statfs4=no], [fu_cv_sys_stat_statfs4=no])]) AC_MSG_RESULT([$fu_cv_sys_stat_statfs4]) if test $fu_cv_sys_stat_statfs4 = yes; then ac_fsusage_space=yes AC_DEFINE([STAT_STATFS4], [1], [ Define if statfs takes 4 args. (SVR3, Dynix, old Irix, old AIX, Dolphin)]) fi fi if test $ac_fsusage_space = no; then # 4.4BSD and older NetBSD # (OSF/1 already handled above.) # (On AIX, you need to include , not only .) # (On Solaris, statfs has 4 arguments and 'struct statfs' is not declared in # .) AC_MSG_CHECKING([for two-argument statfs with statfs.f_fsize dnl member (4.4BSD and NetBSD)]) AC_CACHE_VAL([fu_cv_sys_stat_statfs2_fsize], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #ifdef HAVE_SYS_PARAM_H #include #endif #ifdef HAVE_SYS_MOUNT_H #include #endif int main () { struct statfs fsd; fsd.f_fsize = 0; return statfs (".", &fsd) != 0; }]])], [fu_cv_sys_stat_statfs2_fsize=yes], [fu_cv_sys_stat_statfs2_fsize=no], [fu_cv_sys_stat_statfs2_fsize=no])]) AC_MSG_RESULT([$fu_cv_sys_stat_statfs2_fsize]) if test $fu_cv_sys_stat_statfs2_fsize = yes; then ac_fsusage_space=yes AC_DEFINE([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 $ac_fsusage_space = no; then # Ultrix AC_MSG_CHECKING([for two-argument statfs with struct fs_data (Ultrix)]) AC_CACHE_VAL([fu_cv_sys_stat_fs_data], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #ifdef HAVE_SYS_PARAM_H #include #endif #ifdef HAVE_SYS_MOUNT_H #include #endif #ifdef HAVE_SYS_FS_TYPES_H #include #endif int main () { struct fs_data fsd; /* Ultrix's statfs returns 1 for success, 0 for not mounted, -1 for failure. */ return statfs (".", &fsd) != 1; }]])], [fu_cv_sys_stat_fs_data=yes], [fu_cv_sys_stat_fs_data=no], [fu_cv_sys_stat_fs_data=no])]) AC_MSG_RESULT([$fu_cv_sys_stat_fs_data]) if test $fu_cv_sys_stat_fs_data = yes; then ac_fsusage_space=yes AC_DEFINE([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 # (AIX, HP-UX, OSF/1 already handled above.) AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include ]])], [AC_DEFINE([STAT_READ_FILSYS], [1], [Define if there is no specific function for reading file systems usage information and you have the header file. (SVR2)]) ac_fsusage_space=yes]) fi AS_IF([test $ac_fsusage_space = yes], [$1], [$2]) ]) # Check for SunOS statfs brokenness wrt partitions 2GB and larger. # If exists and struct statfs has a member named f_spare, # enable the work-around code in fsusage.c. AC_DEFUN([gl_STATFS_TRUNCATES], [ AC_MSG_CHECKING([for statfs that truncates block counts]) AC_CACHE_VAL([fu_cv_sys_truncating_statfs], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #if !defined(sun) && !defined(__sun) choke -- this is a workaround for a Sun-specific problem #endif #include #include ]], [[struct statfs t; long c = *(t.f_spare); if (c) return 0;]])], [fu_cv_sys_truncating_statfs=yes], [fu_cv_sys_truncating_statfs=no])]) if test $fu_cv_sys_truncating_statfs = yes; then AC_DEFINE([STATFS_TRUNCATES_BLOCK_COUNTS], [1], [Define if the block counts reported by statfs may be truncated to 2GB and the correct values may be stored in the f_spare array. (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem. SunOS 4.1.1 seems not to be affected.)]) fi AC_MSG_RESULT([$fu_cv_sys_truncating_statfs]) ]) # Prerequisites of lib/fsusage.c not done by gl_FILE_SYSTEM_USAGE. AC_DEFUN([gl_PREREQ_FSUSAGE_EXTRA], [ AC_CHECK_HEADERS([dustat.h sys/fs/s5param.h sys/filsys.h sys/statfs.h]) gl_STATFS_TRUNCATES ])