2
Unix SMB/CIFS implementation.
3
VFS API's statvfs abstraction
4
Copyright (C) Alexander Bokovoy 2005
5
Copyright (C) Steve French 2005
6
Copyright (C) James Peach 2006
8
This program is free software; you can redistribute it and/or modify
9
it under the terms of the GNU General Public License as published by
10
the Free Software Foundation; either version 3 of the License, or
11
(at your option) any later version.
13
This program is distributed in the hope that it will be useful,
14
but WITHOUT ANY WARRANTY; without even the implied warranty of
15
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16
GNU General Public License for more details.
18
You should have received a copy of the GNU General Public License
19
along with this program. If not, see <http://www.gnu.org/licenses/>.
24
#if defined(LINUX) && defined(HAVE_FSID_INT)
25
static int linux_statvfs(const char *path, vfs_statvfs_struct *statbuf)
27
struct statvfs statvfs_buf;
30
result = statvfs(path, &statvfs_buf);
33
statbuf->OptimalTransferSize = statvfs_buf.f_frsize;
34
statbuf->BlockSize = statvfs_buf.f_bsize;
35
statbuf->TotalBlocks = statvfs_buf.f_blocks;
36
statbuf->BlocksAvail = statvfs_buf.f_bfree;
37
statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
38
statbuf->TotalFileNodes = statvfs_buf.f_files;
39
statbuf->FreeFileNodes = statvfs_buf.f_ffree;
40
statbuf->FsIdentifier = statvfs_buf.f_fsid;
42
/* Good defaults for Linux filesystems are case sensitive
43
* and case preserving.
45
statbuf->FsCapabilities =
46
FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
56
static int darwin_fs_capabilities(const char * path)
59
vol_capabilities_attr_t *vcaps;
60
struct attrlist attrlist;
61
char attrbuf[sizeof(u_int32_t) + sizeof(vol_capabilities_attr_t)];
63
#define FORMAT_CAP(vinfo, cap) \
64
( ((vinfo)->valid[VOL_CAPABILITIES_FORMAT] & (cap)) && \
65
((vinfo)->capabilities[VOL_CAPABILITIES_FORMAT] & (cap)) )
67
#define INTERFACE_CAP(vinfo, cap) \
68
( ((vinfo)->valid[VOL_CAPABILITIES_INTERFACES] & (cap)) && \
69
((vinfo)->capabilities[VOL_CAPABILITIES_INTERFACES] & (cap)) )
71
ZERO_STRUCT(attrlist);
72
attrlist.bitmapcount = ATTR_BIT_MAP_COUNT;
73
attrlist.volattr = ATTR_VOL_CAPABILITIES;
75
if (getattrlist(path, &attrlist, attrbuf, sizeof(attrbuf), 0) != 0) {
76
DEBUG(0, ("getattrlist for %s capabilities failed: %s\n",
77
path, strerror(errno)));
78
/* Return no capabilities on failure. */
83
(vol_capabilities_attr_t *)(attrbuf + sizeof(u_int32_t));
85
if (FORMAT_CAP(vcaps, VOL_CAP_FMT_SPARSE_FILES)) {
86
caps |= FILE_SUPPORTS_SPARSE_FILES;
89
if (FORMAT_CAP(vcaps, VOL_CAP_FMT_CASE_SENSITIVE)) {
90
caps |= FILE_CASE_SENSITIVE_SEARCH;
93
if (FORMAT_CAP(vcaps, VOL_CAP_FMT_CASE_PRESERVING)) {
94
caps |= FILE_CASE_PRESERVED_NAMES;
97
if (INTERFACE_CAP(vcaps, VOL_CAP_INT_EXTENDED_SECURITY)) {
98
caps |= FILE_PERSISTENT_ACLS;
104
static int darwin_statvfs(const char *path, vfs_statvfs_struct *statbuf)
109
ret = statfs(path, &sbuf);
114
statbuf->OptimalTransferSize = sbuf.f_iosize;
115
statbuf->BlockSize = sbuf.f_bsize;
116
statbuf->TotalBlocks = sbuf.f_blocks;
117
statbuf->BlocksAvail = sbuf.f_bfree;
118
statbuf->UserBlocksAvail = sbuf.f_bavail;
119
statbuf->TotalFileNodes = sbuf.f_files;
120
statbuf->FreeFileNodes = sbuf.f_ffree;
121
statbuf->FsIdentifier = *(uint64_t *)(&sbuf.f_fsid); /* Ick. */
122
statbuf->FsCapabilities = darwin_fs_capabilities(sbuf.f_mntonname);
129
sys_statvfs() is an abstraction layer over system-dependent statvfs()/statfs()
130
for particular POSIX systems. Due to controversy of what is considered more important
131
between LSB and FreeBSD/POSIX.1 (IEEE Std 1003.1-2001) we need to abstract the interface
132
so that particular OS would use its preffered interface.
134
int sys_statvfs(const char *path, vfs_statvfs_struct *statbuf)
136
#if defined(LINUX) && defined(HAVE_FSID_INT)
137
return linux_statvfs(path, statbuf);
138
#elif defined(DARWINOS)
139
return darwin_statvfs(path, statbuf);
141
/* BB change this to return invalid level */
146
#endif /* EOPNOTSUPP */