bsd-statvfs.c revision 262566 
1/* $Id: bsd-statvfs.c,v 1.2 2014/01/17 07:10:59 dtucker Exp $ */
2
3/*
4 * Copyright (c) 2008,2014 Darren Tucker <dtucker@zip.com.au>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include "includes.h"
20
21#if !defined(HAVE_STATVFS) || !defined(HAVE_FSTATVFS)
22
23#include <sys/param.h>
24#ifdef HAVE_SYS_MOUNT_H
25# include <sys/mount.h>
26#endif
27
28#include <errno.h>
29
30static void
31copy_statfs_to_statvfs(struct statvfs *to, struct statfs *from)
32{
33	to->f_bsize = from->f_bsize;
34	to->f_frsize = from->f_bsize;	/* no exact equivalent */
35	to->f_blocks = from->f_blocks;
36	to->f_bfree = from->f_bfree;
37	to->f_bavail = from->f_bavail;
38	to->f_files = from->f_files;
39	to->f_ffree = from->f_ffree;
40	to->f_favail = from->f_ffree;	/* no exact equivalent */
41	to->f_fsid = 0;			/* XXX fix me */
42	to->f_flag = from->f_flags;
43	to->f_namemax = MNAMELEN;
44}
45
46# ifndef HAVE_STATVFS
47int statvfs(const char *path, struct statvfs *buf)
48{
49#  ifdef HAVE_STATFS
50	struct statfs fs;
51
52	memset(&fs, 0, sizeof(fs));
53	if (statfs(path, &fs) == -1)
54		return -1;
55	copy_statfs_to_statvfs(buf, &fs);
56	return 0;
57#  else
58	errno = ENOSYS;
59	return -1;
60#  endif
61}
62# endif
63
64# ifndef HAVE_FSTATVFS
65int fstatvfs(int fd, struct statvfs *buf)
66{
67#  ifdef HAVE_FSTATFS
68	struct statfs fs;
69
70	memset(&fs, 0, sizeof(fs));
71	if (fstatfs(fd, &fs) == -1)
72		return -1;
73	copy_statfs_to_statvfs(buf, &fs);
74	return 0;
75#  else
76	errno = ENOSYS;
77	return -1;
78#  endif
79}
80# endif
81
82#endif
83