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/*
Unix SMB/CIFS implementation.
VFS API's statvfs abstraction
Copyright (C) Alexander Bokovoy 2005
Copyright (C) Steve French 2005
Copyright (C) James Peach 2006
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "system/filesys.h"
#include "smbd/smbd.h"
#if defined(DARWINOS)
#include <sys/attr.h>
static int darwin_fs_capabilities(const char * path)
{
int caps = 0;
vol_capabilities_attr_t *vcaps;
struct attrlist attrlist;
char attrbuf[sizeof(u_int32_t) + sizeof(vol_capabilities_attr_t)];
#define FORMAT_CAP(vinfo, cap) \
( ((vinfo)->valid[VOL_CAPABILITIES_FORMAT] & (cap)) && \
((vinfo)->capabilities[VOL_CAPABILITIES_FORMAT] & (cap)) )
#define INTERFACE_CAP(vinfo, cap) \
( ((vinfo)->valid[VOL_CAPABILITIES_INTERFACES] & (cap)) && \
((vinfo)->capabilities[VOL_CAPABILITIES_INTERFACES] & (cap)) )
ZERO_STRUCT(attrlist);
attrlist.bitmapcount = ATTR_BIT_MAP_COUNT;
attrlist.volattr = ATTR_VOL_CAPABILITIES;
if (getattrlist(path, &attrlist, attrbuf, sizeof(attrbuf), 0) != 0) {
DEBUG(0, ("getattrlist for %s capabilities failed: %s\n",
path, strerror(errno)));
/* Return no capabilities on failure. */
return 0;
}
vcaps =
(vol_capabilities_attr_t *)(attrbuf + sizeof(u_int32_t));
if (FORMAT_CAP(vcaps, VOL_CAP_FMT_SPARSE_FILES)) {
caps |= FILE_SUPPORTS_SPARSE_FILES;
}
if (FORMAT_CAP(vcaps, VOL_CAP_FMT_CASE_SENSITIVE)) {
caps |= FILE_CASE_SENSITIVE_SEARCH;
}
if (FORMAT_CAP(vcaps, VOL_CAP_FMT_CASE_PRESERVING)) {
caps |= FILE_CASE_PRESERVED_NAMES;
}
if (INTERFACE_CAP(vcaps, VOL_CAP_INT_EXTENDED_SECURITY)) {
caps |= FILE_PERSISTENT_ACLS;
}
return caps;
}
static int darwin_statvfs(const char *path, vfs_statvfs_struct *statbuf)
{
struct statfs sbuf;
int ret;
ret = statfs(path, &sbuf);
if (ret != 0) {
return ret;
}
statbuf->OptimalTransferSize = sbuf.f_iosize;
statbuf->BlockSize = sbuf.f_bsize;
statbuf->TotalBlocks = sbuf.f_blocks;
statbuf->BlocksAvail = sbuf.f_bfree;
statbuf->UserBlocksAvail = sbuf.f_bavail;
statbuf->TotalFileNodes = sbuf.f_files;
statbuf->FreeFileNodes = sbuf.f_ffree;
statbuf->FsIdentifier = *(uint64_t *)(&sbuf.f_fsid); /* Ick. */
statbuf->FsCapabilities = darwin_fs_capabilities(sbuf.f_mntonname);
return 0;
}
#elif defined(BSD_STYLE_STATVFS)
static int bsd_statvfs(const char *path, vfs_statvfs_struct *statbuf)
{
struct statfs statfs_buf;
int result;
result = statfs(path, &statfs_buf);
if (result != 0) {
return result;
}
statbuf->OptimalTransferSize = statfs_buf.f_iosize;
statbuf->BlockSize = statfs_buf.f_bsize;
statbuf->TotalBlocks = statfs_buf.f_blocks;
statbuf->BlocksAvail = statfs_buf.f_bfree;
statbuf->UserBlocksAvail = statfs_buf.f_bavail;
statbuf->TotalFileNodes = statfs_buf.f_files;
statbuf->FreeFileNodes = statfs_buf.f_ffree;
statbuf->FsIdentifier =
(((uint64_t) statfs_buf.f_fsid.val[0] << 32) & 0xffffffff00000000LL) |
(uint64_t) statfs_buf.f_fsid.val[1];
/* Try to extrapolate some of the fs flags into the
* capabilities
*/
statbuf->FsCapabilities =
FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
#ifdef MNT_ACLS
if (statfs_buf.f_flags & MNT_ACLS)
statbuf->FsCapabilities |= FILE_PERSISTENT_ACLS;
#endif
if (statfs_buf.f_flags & MNT_QUOTA)
statbuf->FsCapabilities |= FILE_VOLUME_QUOTAS;
if (statfs_buf.f_flags & MNT_RDONLY)
statbuf->FsCapabilities |= FILE_READ_ONLY_VOLUME;
return 0;
}
#elif defined(STAT_STATVFS) && defined(HAVE_FSID_INT)
static int linux_statvfs(const char *path, vfs_statvfs_struct *statbuf)
{
struct statvfs statvfs_buf;
int result;
result = statvfs(path, &statvfs_buf);
if (!result) {
statbuf->OptimalTransferSize = statvfs_buf.f_frsize;
statbuf->BlockSize = statvfs_buf.f_bsize;
statbuf->TotalBlocks = statvfs_buf.f_blocks;
statbuf->BlocksAvail = statvfs_buf.f_bfree;
statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
statbuf->TotalFileNodes = statvfs_buf.f_files;
statbuf->FreeFileNodes = statvfs_buf.f_ffree;
statbuf->FsIdentifier = statvfs_buf.f_fsid;
/* Try to extrapolate some of the fs flags into the
* capabilities
*/
statbuf->FsCapabilities =
FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES;
#ifdef ST_QUOTA
if (statvfs_buf.f_flag & ST_QUOTA)
statbuf->FsCapabilities |= FILE_VOLUME_QUOTAS;
#endif
if (statvfs_buf.f_flag & ST_RDONLY)
statbuf->FsCapabilities |= FILE_READ_ONLY_VOLUME;
}
return result;
}
#endif
/*
sys_statvfs() is an abstraction layer over system-dependent statvfs()/statfs()
for particular POSIX systems. Due to controversy of what is considered more important
between LSB and FreeBSD/POSIX.1 (IEEE Std 1003.1-2001) we need to abstract the interface
so that particular OS would use its prefered interface.
*/
int sys_statvfs(const char *path, vfs_statvfs_struct *statbuf)
{
#if defined(DARWINOS)
return darwin_statvfs(path, statbuf);
#elif defined(BSD_STYLE_STATVFS)
return bsd_statvfs(path, statbuf);
#elif defined(STAT_STATVFS) && defined(HAVE_FSID_INT)
return linux_statvfs(path, statbuf);
#else
/* BB change this to return invalid level */
#ifdef EOPNOTSUPP
return EOPNOTSUPP;
#else
return -1;
#endif /* EOPNOTSUPP */
#endif /* LINUX */
}
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