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CIFS: Move statfs to ops struct 

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky 2012-09-18 16:20:33 -07:00 committed by Steve French
parent 983c88a497
commit 76ec5e3384
3 changed files with 43 additions and 25 deletions
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29
fs/cifs/cifsfs.c
View File

@ -51,7 +51,6 @@
#ifdef CONFIG_CIFS_SMB2
#include "smb2pdu.h"
#endif
#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */
int cifsFYI = 0;
int cifsERROR = 1;
@ -164,13 +163,12 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
struct super_block *sb = dentry->d_sb;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
int rc = -EOPNOTSUPP;
struct TCP_Server_Info *server = tcon->ses->server;
unsigned int xid;
int rc = 0;
xid = get_xid();
buf->f_type = CIFS_MAGIC_NUMBER;
/*
* PATH_MAX may be too long - it would presumably be total path,
* but note that some servers (includinng Samba 3) have a shorter
@ -182,27 +180,8 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_files = 0; /* undefined */
buf->f_ffree = 0; /* unlimited */
/*
* We could add a second check for a QFS Unix capability bit
*/
if ((tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
/*
* Only need to call the old QFSInfo if failed on newer one,
* e.g. by OS/2.
**/
if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
rc = CIFSSMBQFSInfo(xid, tcon, buf);
/*
* Some old Windows servers also do not support level 103, retry with
* older level one if old server failed the previous call or we
* bypassed it because we detected that this was an older LANMAN sess
*/
if (rc)
rc = SMBOldQFSInfo(xid, tcon, buf);
if (server->ops->queryfs)
rc = server->ops->queryfs(xid, tcon, buf);
free_xid(xid);
return 0;

5
fs/cifs/cifsglob.h
View File

@ -32,6 +32,8 @@
#include "smb2pdu.h"
#endif
#define CIFS_MAGIC_NUMBER 0xFF534D42 /* the first four bytes of SMB PDUs */
/*
* The sizes of various internal tables and strings
*/
@ -334,6 +336,9 @@ struct smb_version_operations {
/* send oplock break response */
int (*oplock_response)(struct cifs_tcon *, struct cifs_fid *,
struct cifsInodeInfo *);
/* query remote filesystem */
int (*queryfs)(const unsigned int, struct cifs_tcon *,
struct kstatfs *);
};
struct smb_version_values {

34
fs/cifs/smb1ops.c
View File

@ -18,6 +18,7 @@
*/
#include <linux/pagemap.h>
#include <linux/vfs.h>
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
@ -872,6 +873,38 @@ cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
cinode->clientCanCacheRead ? 1 : 0);
}
static int
cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
struct kstatfs *buf)
{
int rc = -EOPNOTSUPP;
buf->f_type = CIFS_MAGIC_NUMBER;
/*
* We could add a second check for a QFS Unix capability bit
*/
if ((tcon->ses->capabilities & CAP_UNIX) &&
(CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
/*
* Only need to call the old QFSInfo if failed on newer one,
* e.g. by OS/2.
**/
if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
rc = CIFSSMBQFSInfo(xid, tcon, buf);
/*
* Some old Windows servers also do not support level 103, retry with
* older level one if old server failed the previous call or we
* bypassed it because we detected that this was an older LANMAN sess
*/
if (rc)
rc = SMBOldQFSInfo(xid, tcon, buf);
return rc;
}
struct smb_version_operations smb1_operations = {
.send_cancel = send_nt_cancel,
.compare_fids = cifs_compare_fids,
@ -932,6 +965,7 @@ struct smb_version_operations smb1_operations = {
.close_dir = cifs_close_dir,
.calc_smb_size = smbCalcSize,
.oplock_response = cifs_oplock_response,
.queryfs = cifs_queryfs,
};
struct smb_version_values smb1_values = {