glibc/sysdeps/unix/sysv/linux/generic/bits/statfs.h

87 lines
2.9 KiB
C

/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_STATFS_H
# error "Never include <bits/statfs.h> directly; use <sys/statfs.h> instead."
#endif
#include <endian.h>
#include <bits/types.h>
#include <bits/wordsize.h>
/* 64-bit libc uses the kernel's 'struct statfs', accessed via the
statfs() syscall; 32-bit libc uses the kernel's 'struct statfs64'
and accesses it via the statfs64() syscall. All the various
APIs offered by libc use the kernel shape for their struct statfs
structure; the only difference is that 32-bit programs not
using __USE_FILE_OFFSET64 only see the low 32 bits of some
of the fields (the __fsblkcnt_t and __fsfilcnt_t fields). */
#if defined __USE_FILE_OFFSET64
# define __field64(type, type64, name) type64 name
#elif __WORDSIZE == 64
# define __field64(type, type64, name) type name
#elif __BYTE_ORDER == __LITTLE_ENDIAN
# define __field64(type, type64, name) \
type name __attribute__((__aligned__ (__alignof__ (type64)))); int __##name##_pad
#else
# define __field64(type, type64, name) \
int __##name##_pad __attribute__((__aligned__ (__alignof__ (type64)))); type name
#endif
struct statfs
{
__SWORD_TYPE f_type;
__SWORD_TYPE f_bsize;
__field64(__fsblkcnt_t, __fsblkcnt64_t, f_blocks);
__field64(__fsblkcnt_t, __fsblkcnt64_t, f_bfree);
__field64(__fsblkcnt_t, __fsblkcnt64_t, f_bavail);
__field64(__fsfilcnt_t, __fsfilcnt64_t, f_files);
__field64(__fsfilcnt_t, __fsfilcnt64_t, f_ffree);
__fsid_t f_fsid;
__SWORD_TYPE f_namelen;
__SWORD_TYPE f_frsize;
__SWORD_TYPE f_flags;
__SWORD_TYPE f_spare[4];
};
#undef __field64
#ifdef __USE_LARGEFILE64
struct statfs64
{
__SWORD_TYPE f_type;
__SWORD_TYPE f_bsize;
__fsblkcnt64_t f_blocks;
__fsblkcnt64_t f_bfree;
__fsblkcnt64_t f_bavail;
__fsfilcnt64_t f_files;
__fsfilcnt64_t f_ffree;
__fsid_t f_fsid;
__SWORD_TYPE f_namelen;
__SWORD_TYPE f_frsize;
__SWORD_TYPE f_flags;
__SWORD_TYPE f_spare[4];
};
#endif
/* Tell code we have these members. */
#define _STATFS_F_NAMELEN
#define _STATFS_F_FRSIZE
#define _STATFS_F_FLAGS