bsd-statvfs.c revision 323134 
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
28static void
29copy_statfs_to_statvfs(struct statvfs *to, struct statfs *from)
30{
31	to->f_bsize = from->f_bsize;
32	to->f_frsize = from->f_bsize;	/* no exact equivalent */
33	to->f_blocks = from->f_blocks;
34	to->f_bfree = from->f_bfree;
35	to->f_bavail = from->f_bavail;
36	to->f_files = from->f_files;
37	to->f_ffree = from->f_ffree;
38	to->f_favail = from->f_ffree;	/* no exact equivalent */
39	to->f_fsid = 0;			/* XXX fix me */
40	to->f_flag = from->f_flags;
41	to->f_namemax = MNAMELEN;
42}
43
44# ifndef HAVE_STATVFS
45int statvfs(const char *path, struct statvfs *buf)
46{
47#  ifdef HAVE_STATFS
48	struct statfs fs;
49
50	memset(&fs, 0, sizeof(fs));
51	if (statfs(path, &fs) == -1)
52		return -1;
53	copy_statfs_to_statvfs(buf, &fs);
54	return 0;
55#  else
56	errno = ENOSYS;
57	return -1;
58#  endif
59}
60# endif
61
62# ifndef HAVE_FSTATVFS
63int fstatvfs(int fd, struct statvfs *buf)
64{
65#  ifdef HAVE_FSTATFS
66	struct statfs fs;
67
68	memset(&fs, 0, sizeof(fs));
69	if (fstatfs(fd, &fs) == -1)
70		return -1;
71	copy_statfs_to_statvfs(buf, &fs);
72	return 0;
73#  else
74	errno = ENOSYS;
75	return -1;
76#  endif
77}
78# endif
79
80#endif
81