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/* Return information about the filesystem on which FD resides.
Copyright (C) 1996-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <string.h>
#include <stddef.h>
#include <sysdep.h>
#include <kernel_stat.h>
/* Hide the prototypes for __fstatfs and fstatfs so that GCC will not
complain about the different function signatures if they are aliased
to __fstat64. If STATFS_IS_STATFS64 is not zero then the statfs and
statfs64 structures have an identical layout but different type names. */
#if STATFS_IS_STATFS64
# define __fstatfs __fstatfs_disable
# define fstatfs fstatfs_disable
#endif
#include <sys/statfs.h>
#include <kernel-features.h>
/* Defined in statfs64.c. */
extern int __no_statfs64 attribute_hidden;
/* Return information about the filesystem on which FD resides. */
int
__fstatfs64 (int fd, struct statfs64 *buf)
{
#ifdef __NR_fstatfs64
# if __ASSUME_STATFS64 == 0
if (! __no_statfs64)
# endif
{
int result = INLINE_SYSCALL (fstatfs64, 3, fd, sizeof (*buf), buf);
# if __ASSUME_STATFS64 == 0
if (result == 0 || errno != ENOSYS)
# endif
return result;
# if __ASSUME_STATFS64 == 0
__no_statfs64 = 1;
# endif
}
#endif
#if __ASSUME_STATFS64 == 0
struct statfs buf32;
if (__fstatfs (fd, &buf32) < 0)
return -1;
buf->f_type = buf32.f_type;
buf->f_bsize = buf32.f_bsize;
buf->f_blocks = buf32.f_blocks;
buf->f_bfree = buf32.f_bfree;
buf->f_bavail = buf32.f_bavail;
buf->f_files = buf32.f_files;
buf->f_ffree = buf32.f_ffree;
buf->f_fsid = buf32.f_fsid;
buf->f_namelen = buf32.f_namelen;
buf->f_frsize = buf32.f_frsize;
memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare));
return 0;
#endif
}
weak_alias (__fstatfs64, fstatfs64)
#undef __fstatfs
#undef fstatfs
#if STATFS_IS_STATFS64
weak_alias (__fstatfs64, __fstatfs)
weak_alias (__fstatfs64, fstatfs)
#endif
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