1/*
2 * Copyright (c) 2008,2014 Darren Tucker <dtucker@zip.com.au>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
13 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
14 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include "includes.h"
18
19#if !defined(HAVE_STATVFS) || !defined(HAVE_FSTATVFS)
20
21#include <sys/param.h>
22#ifdef HAVE_SYS_MOUNT_H
23# include <sys/mount.h>
24#endif
25
26#include <errno.h>
27
28#ifndef MNAMELEN
29# define MNAMELEN 32
30#endif
31
32static void
33copy_statfs_to_statvfs(struct statvfs *to, struct statfs *from)
34{
35	to->f_bsize = from->f_bsize;
36	to->f_frsize = from->f_bsize;	/* no exact equivalent */
37	to->f_blocks = from->f_blocks;
38	to->f_bfree = from->f_bfree;
39	to->f_bavail = from->f_bavail;
40	to->f_files = from->f_files;
41	to->f_ffree = from->f_ffree;
42	to->f_favail = from->f_ffree;	/* no exact equivalent */
43	to->f_fsid = 0;			/* XXX fix me */
44#ifdef HAVE_STRUCT_STATFS_F_FLAGS
45	to->f_flag = from->f_flags;
46#else
47	to->f_flag = 0;
48#endif
49	to->f_namemax = MNAMELEN;
50}
51
52# ifndef HAVE_STATVFS
53int statvfs(const char *path, struct statvfs *buf)
54{
55#  ifdef HAVE_STATFS
56	struct statfs fs;
57
58	memset(&fs, 0, sizeof(fs));
59	if (statfs(path, &fs) == -1)
60		return -1;
61	copy_statfs_to_statvfs(buf, &fs);
62	return 0;
63#  else
64	errno = ENOSYS;
65	return -1;
66#  endif
67}
68# endif
69
70# ifndef HAVE_FSTATVFS
71int fstatvfs(int fd, struct statvfs *buf)
72{
73#  ifdef HAVE_FSTATFS
74	struct statfs fs;
75
76	memset(&fs, 0, sizeof(fs));
77	if (fstatfs(fd, &fs) == -1)
78		return -1;
79	copy_statfs_to_statvfs(buf, &fs);
80	return 0;
81#  else
82	errno = ENOSYS;
83	return -1;
84#  endif
85}
86# endif
87
88#endif
89