| /* Return information about the filesystem on which FD resides. |
| Copyright (C) 1996-2018 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 |
| <http://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 |