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
36 static void
copy_statfs_to_statvfs(struct statvfs * to,struct statfs * from)37 copy_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
statvfs(const char * path,struct statvfs * buf)58 int 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
fstatvfs(int fd,struct statvfs * buf)76 int 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