X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ffsusage.c;h=a0c39d2b53c0ef9b9d5aa270211f04423b81bdcf;hb=4470580881a7b821b52fb5635102ef3e27aa5af4;hp=83d26af88bd724aeddd6efd40794b4a37c0db694;hpb=d1eb42bdbbaf00d38b2a479e9aa40207b79bd090;p=gnulib.git
diff --git a/lib/fsusage.c b/lib/fsusage.c
index 83d26af88..a0c39d2b5 100644
--- a/lib/fsusage.c
+++ b/lib/fsusage.c
@@ -1,12 +1,12 @@
/* fsusage.c -- return space usage of mounted file systems
- Copyright (C) 1991, 1992, 1996, 1998, 1999, 2002, 2003, 2004, 2005
- Free Software Foundation, Inc.
+ Copyright (C) 1991-1992, 1996, 1998-1999, 2002-2006, 2009-2011 Free Software
+ Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ 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.
+ the Free Software Foundation; either version 3 of the License, 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
@@ -14,67 +14,51 @@
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see . */
-#if HAVE_CONFIG_H
-# include
-#endif
+#include
-#if HAVE_INTTYPES_H
-# include
-#endif
-#if HAVE_STDINT_H
-# include
-#endif
-#if HAVE_UNISTD_H
-# include
-#endif
-#ifndef UINTMAX_MAX
-# define UINTMAX_MAX ((uintmax_t) -1)
-#endif
-
-#include
-#include
#include "fsusage.h"
#include
+#include
-#if HAVE_SYS_PARAM_H
-# include
-#endif
-
-#if HAVE_SYS_MOUNT_H
-# include
-#endif
-
-#if HAVE_SYS_VFS_H
-# include
-#endif
-
-#if HAVE_SYS_FS_S5PARAM_H /* Fujitsu UXP/V */
-# include
-#endif
-
-#if defined HAVE_SYS_FILSYS_H && !defined _CRAY
-# include /* SVR2 */
-#endif
-
-#include
-
-#if HAVE_SYS_STATFS_H
-# include
-#endif
-
-#if HAVE_DUSTAT_H /* AIX PS/2 */
-# include
-#endif
-
-#if HAVE_SYS_STATVFS_H /* SVR4 */
+#if STAT_STATVFS || STAT_STATVFS64 /* POSIX 1003.1-2001 (and later) with XSI */
# include
+#else
+/* Don't include backward-compatibility files unless they're needed.
+ Eventually we'd like to remove all this cruft. */
+# include
+# include
+# include
+# if HAVE_SYS_PARAM_H
+# include
+# endif
+# if HAVE_SYS_MOUNT_H
+# include
+# endif
+# if HAVE_SYS_VFS_H
+# include
+# endif
+# if HAVE_SYS_FS_S5PARAM_H /* Fujitsu UXP/V */
+# include
+# endif
+# if defined HAVE_SYS_FILSYS_H && !defined _CRAY
+# include /* SVR2 */
+# endif
+# if HAVE_SYS_STATFS_H
+# include
+# endif
+# if HAVE_DUSTAT_H /* AIX PS/2 */
+# include
+# endif
+# include "full-read.h"
#endif
-#include "full-read.h"
+/* The results of open() in this file are not used with fchdir,
+ therefore save some unnecessary work in fchdir.c. */
+#undef open
+#undef close
/* Many space usage primitives use all 1 bits to denote a value that is
not applicable or unknown. Propagate this information by returning
@@ -83,13 +67,13 @@
#define PROPAGATE_ALL_ONES(x) \
((sizeof (x) < sizeof (uintmax_t) \
&& (~ (x) == (sizeof (x) < sizeof (int) \
- ? - (1 << (sizeof (x) * CHAR_BIT)) \
- : 0))) \
- ? UINTMAX_MAX : (x))
+ ? - (1 << (sizeof (x) * CHAR_BIT)) \
+ : 0))) \
+ ? UINTMAX_MAX : (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)))
+ & ((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.
@@ -110,18 +94,31 @@
int
get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
{
-#ifdef STAT_STATFS3_OSF1
+#if defined STAT_STATVFS /* POSIX, except glibc/Linux */
- struct statfs fsd;
+ struct statvfs fsd;
- if (statfs (file, &fsd, sizeof (struct statfs)) != 0)
+ if (statvfs (file, &fsd) < 0)
return -1;
- fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
+ /* f_frsize isn't guaranteed to be supported. */
+ fsp->fsu_blocksize = (fsd.f_frsize
+ ? PROPAGATE_ALL_ONES (fsd.f_frsize)
+ : PROPAGATE_ALL_ONES (fsd.f_bsize));
-#endif /* STAT_STATFS3_OSF1 */
+#elif defined STAT_STATVFS64 /* AIX */
-#ifdef STAT_STATFS2_FS_DATA /* Ultrix */
+ struct statvfs64 fsd;
+
+ if (statvfs64 (file, &fsd) < 0)
+ return -1;
+
+ /* f_frsize isn't guaranteed to be supported. */
+ fsp->fsu_blocksize = (fsd.f_frsize
+ ? PROPAGATE_ALL_ONES (fsd.f_frsize)
+ : PROPAGATE_ALL_ONES (fsd.f_bsize));
+
+#elif defined STAT_STATFS2_FS_DATA /* Ultrix */
struct fs_data fsd;
@@ -136,9 +133,7 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
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 */
+#elif defined STAT_READ_FILSYS /* SVR2 */
# ifndef SUPERBOFF
# define SUPERBOFF (SUPERB * 512)
# endif
@@ -169,13 +164,22 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
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_MAX
- : (fsd.s_isize - 2) * INOPB * (fsd.s_type == Fs2b ? 2 : 1));
+ ? UINTMAX_MAX
+ : (fsd.s_isize - 2) * INOPB * (fsd.s_type == Fs2b ? 2 : 1));
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.s_tinode);
-#endif /* STAT_READ_FILSYS */
+#elif defined STAT_STATFS3_OSF1 /* OSF/1 */
+
+ struct statfs fsd;
-#ifdef STAT_STATFS2_BSIZE /* 4.3BSD, SunOS 4, HP-UX, AIX */
+ if (statfs (file, &fsd, sizeof (struct statfs)) != 0)
+ return -1;
+
+ fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
+
+#elif defined STAT_STATFS2_BSIZE /* glibc/Linux, 4.3BSD, SunOS 4, \
+ MacOS X < 10.4, FreeBSD < 5.0, \
+ NetBSD < 3.0, OpenBSD < 4.4 */
struct statfs fsd;
@@ -199,9 +203,7 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
}
# endif /* STATFS_TRUNCATES_BLOCK_COUNTS */
-#endif /* STAT_STATFS2_BSIZE */
-
-#ifdef STAT_STATFS2_FSIZE /* 4.4BSD */
+#elif defined STAT_STATFS2_FSIZE /* 4.4BSD and older NetBSD */
struct statfs fsd;
@@ -210,9 +212,8 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
-#endif /* STAT_STATFS2_FSIZE */
-
-#ifdef STAT_STATFS4 /* SVR3, Dynix, Irix, AIX */
+#elif defined STAT_STATFS4 /* SVR3, Dynix, old Irix, old AIX, \
+ Dolphin */
# if !_AIX && !defined _SEQUENT_ && !defined DOLPHIN
# define f_bavail f_bfree
@@ -232,24 +233,10 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
fsp->fsu_blocksize = 512;
# endif
-#endif /* STAT_STATFS4 */
-
-#ifdef STAT_STATVFS /* SVR4 */
-
- struct statvfs fsd;
-
- if (statvfs (file, &fsd) < 0)
- return -1;
-
- /* f_frsize isn't guaranteed to be supported. */
- fsp->fsu_blocksize = (fsd.f_frsize
- ? PROPAGATE_ALL_ONES (fsd.f_frsize)
- : PROPAGATE_ALL_ONES (fsd.f_bsize));
-
-#endif /* STAT_STATVFS */
+#endif
-#if !defined STAT_STATFS2_FS_DATA && !defined STAT_READ_FILSYS
- /* !Ultrix && !SVR2 */
+#if (defined STAT_STATVFS || defined STAT_STATVFS64 \
+ || (!defined STAT_STATFS2_FS_DATA && !defined STAT_READ_FILSYS))
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.f_blocks);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.f_bfree);
@@ -258,8 +245,9 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
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 */
+#endif
+ (void) disk; /* avoid argument-unused warning */
return 0;
}