1/* Get filesystem statistics. Linux version.
2 Copyright (C) 2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library. If not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <sys/statfs.h>
20#include <time.h>
21#include <sysdep.h>
22#include <kernel_stat.h>
23
24#if !STATFS_IS_STATFS64
25
26/* Return information about the filesystem on which FILE resides. */
27int
28__fstatfs (int fd, struct statfs *buf)
29{
30 struct statfs64 buf64;
31 int rc = INLINE_SYSCALL_CALL (fstatfs64, fd, sizeof (buf64), &buf64);
32 if (rc != 0)
33 return rc;
34
35 buf->f_type = buf64.f_type;
36 buf->f_bsize = buf64.f_bsize;
37 buf->f_blocks = buf64.f_blocks;
38 buf->f_bfree = buf64.f_bfree;
39 buf->f_bavail = buf64.f_bavail;
40 buf->f_files = buf64.f_files;
41 buf->f_ffree = buf64.f_ffree;
42 buf->f_fsid = buf64.f_fsid;
43 buf->f_namelen = buf64.f_namelen;
44 buf->f_frsize = buf64.f_frsize;
45 buf->f_flags = buf64.f_flags;
46 memcpy (buf->f_spare, buf64.f_spare, sizeof (buf64.f_spare));
47
48 if ((fsblkcnt_t) buf64.f_blocks != buf64.f_blocks
49 || (fsblkcnt_t) buf64.f_bfree != buf64.f_bfree
50 || (fsblkcnt_t) buf64.f_bavail != buf64.f_bavail
51 || (fsblkcnt_t) buf64.f_files != buf64.f_files
52 || (fsblkcnt_t) buf64.f_ffree != buf64.f_ffree)
53 {
54 __set_errno (EOVERFLOW);
55 return -1;
56 }
57
58 return 0;
59}
60libc_hidden_def (__fstatfs)
61weak_alias (__fstatfs, fstatfs)
62#endif
63