Signed-off-by: Pavel Shilovsky <pshilovsky@xxxxxxxxx>
---
fs/cifs/cifsfs.c | 29 ++++-------------------------
fs/cifs/cifsglob.h | 5 +++++
fs/cifs/smb1ops.c | 34 ++++++++++++++++++++++++++++++++++
3 files changed, 43 insertions(+), 25 deletions(-)
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 65f8b05..4dde869 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -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;
@@ -162,13 +161,12 @@ 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
@@ -180,27 +178,8 @@ 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;
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index a8f424f..46bbbe4 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -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
*/
@@ -333,6 +335,9 @@ 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 {
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index f55b2e3..f6c7a1c 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -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 = {
--
1.7.1
--
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