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#ifdef HAVE_SYS_MOUNT_H
22# include <sys/mount.h>
23#endif
24
25#include <errno.h>
26
27#ifndef MNAMELEN
28# define MNAMELEN 32
29#endif
30
31#ifdef HAVE_STRUCT_STATFS_F_FILES
32# define HAVE_STRUCT_STATFS
33#endif
34
35#ifdef HAVE_STRUCT_STATFS
36static void
37copy_statfs_to_statvfs(struct statvfs *to, struct statfs *from)
38{
39	to->f_bsize = from->f_bsize;
40	to->f_frsize = from->f_bsize;	/* no exact equivalent */
41	to->f_blocks = from->f_blocks;
42	to->f_bfree = from->f_bfree;
43	to->f_bavail = from->f_bavail;
44	to->f_files = from->f_files;
45	to->f_ffree = from->f_ffree;
46	to->f_favail = from->f_ffree;	/* no exact equivalent */
47	to->f_fsid = 0;			/* XXX fix me */
48#ifdef HAVE_STRUCT_STATFS_F_FLAGS
49	to->f_flag = from->f_flags;
50#else
51	to->f_flag = 0;
52#endif
53	to->f_namemax = MNAMELEN;
54}
55#endif
56
57# ifndef HAVE_STATVFS
58int statvfs(const char *path, struct statvfs *buf)
59{
60#  if defined(HAVE_STATFS) && defined(HAVE_STRUCT_STATFS)
61	struct statfs fs;
62
63	memset(&fs, 0, sizeof(fs));
64	if (statfs(path, &fs) == -1)
65		return -1;
66	copy_statfs_to_statvfs(buf, &fs);
67	return 0;
68#  else
69	errno = ENOSYS;
70	return -1;
71#  endif
72}
73# endif
74
75# ifndef HAVE_FSTATVFS
76int fstatvfs(int fd, struct statvfs *buf)
77{
78#  if defined(HAVE_FSTATFS) && defined(HAVE_STRUCT_STATFS)
79	struct statfs fs;
80
81	memset(&fs, 0, sizeof(fs));
82	if (fstatfs(fd, &fs) == -1)
83		return -1;
84	copy_statfs_to_statvfs(buf, &fs);
85	return 0;
86#  else
87	errno = ENOSYS;
88	return -1;
89#  endif
90}
91# endif
92
93#endif
94