CIFS: Separate protocol specific lock type handling

Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>

fs/cifs/cifsglob.h

@@ -164,6 +164,10 @@ struct smb_version_operations {
 
 struct smb_version_values {
 	char		*version_string;
+	__u32		large_lock_type;
+	__u32		exclusive_lock_type;
+	__u32		shared_lock_type;
+	__u32		unlock_lock_type;
 };
 
 struct smb_vol {

fs/cifs/file.c

@@ -675,12 +675,13 @@ cifs_find_fid_lock_conflict(struct cifsFileInfo *cfile, __u64 offset,
 			    struct cifsLockInfo **conf_lock)
 {
 	struct cifsLockInfo *li;
+	struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
 
 	list_for_each_entry(li, &cfile->llist, llist) {
 		if (offset + length <= li->offset ||
 		    offset >= li->offset + li->length)
 			continue;
-		else if ((type & LOCKING_ANDX_SHARED_LOCK) &&
+		else if ((type & server->vals->shared_lock_type) &&
 			 ((netfid == cfile->netfid && current->tgid == li->pid)
 			 || type == li->type))
 			continue;
@@ -726,6 +727,7 @@ cifs_lock_test(struct cifsFileInfo *cfile, __u64 offset, __u64 length,
 	int rc = 0;
 	struct cifsLockInfo *conf_lock;
 	struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
+	struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
 	bool exist;
 
 	mutex_lock(&cinode->lock_mutex);
@@ -736,7 +738,7 @@ cifs_lock_test(struct cifsFileInfo *cfile, __u64 offset, __u64 length,
 		flock->fl_start = conf_lock->offset;
 		flock->fl_end = conf_lock->offset + conf_lock->length - 1;
 		flock->fl_pid = conf_lock->pid;
-		if (conf_lock->type & LOCKING_ANDX_SHARED_LOCK)
+		if (conf_lock->type & server->vals->shared_lock_type)
 			flock->fl_type = F_RDLCK;
 		else
 			flock->fl_type = F_WRLCK;
@@ -1069,7 +1071,7 @@ cifs_push_locks(struct cifsFileInfo *cfile)
 
 static void
 cifs_read_flock(struct file_lock *flock, __u32 *type, int *lock, int *unlock,
-		bool *wait_flag)
+		bool *wait_flag, struct TCP_Server_Info *server)
 {
 	if (flock->fl_flags & FL_POSIX)
 		cFYI(1, "Posix");
@@ -1088,24 +1090,27 @@ cifs_read_flock(struct file_lock *flock, __u32 *type, int *lock, int *unlock,
 	    (~(FL_POSIX | FL_FLOCK | FL_SLEEP | FL_ACCESS | FL_LEASE)))
 		cFYI(1, "Unknown lock flags 0x%x", flock->fl_flags);
 
-	*type = LOCKING_ANDX_LARGE_FILES;
+	*type = server->vals->large_lock_type;
 	if (flock->fl_type == F_WRLCK) {
 		cFYI(1, "F_WRLCK ");
+		*type |= server->vals->exclusive_lock_type;
 		*lock = 1;
 	} else if (flock->fl_type == F_UNLCK) {
 		cFYI(1, "F_UNLCK");
+		*type |= server->vals->unlock_lock_type;
 		*unlock = 1;
 		/* Check if unlock includes more than one lock range */
 	} else if (flock->fl_type == F_RDLCK) {
 		cFYI(1, "F_RDLCK");
-		*type |= LOCKING_ANDX_SHARED_LOCK;
+		*type |= server->vals->shared_lock_type;
 		*lock = 1;
 	} else if (flock->fl_type == F_EXLCK) {
 		cFYI(1, "F_EXLCK");
+		*type |= server->vals->exclusive_lock_type;
 		*lock = 1;
 	} else if (flock->fl_type == F_SHLCK) {
 		cFYI(1, "F_SHLCK");
-		*type |= LOCKING_ANDX_SHARED_LOCK;
+		*type |= server->vals->shared_lock_type;
 		*lock = 1;
 	} else
 		cFYI(1, "Unknown type of lock");
@@ -1119,6 +1124,7 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type,
 	__u64 length = 1 + flock->fl_end - flock->fl_start;
 	struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data;
 	struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
+	struct TCP_Server_Info *server = tcon->ses->server;
 	__u16 netfid = cfile->netfid;
 
 	if (posix_lck) {
@@ -1128,7 +1134,7 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type,
 		if (!rc)
 			return rc;
 
-		if (type & LOCKING_ANDX_SHARED_LOCK)
+		if (type & server->vals->shared_lock_type)
 			posix_lock_type = CIFS_RDLCK;
 		else
 			posix_lock_type = CIFS_WRLCK;
@@ -1152,23 +1158,22 @@ cifs_getlk(struct file *file, struct file_lock *flock, __u32 type,
 		flock->fl_type = F_UNLCK;
 		if (rc != 0)
 			cERROR(1, "Error unlocking previously locked "
-				   "range %d during test of lock", rc);
+				  "range %d during test of lock", rc);
 		return 0;
 	}
 
-	if (type & LOCKING_ANDX_SHARED_LOCK) {
+	if (type & server->vals->shared_lock_type) {
 		flock->fl_type = F_WRLCK;
 		return 0;
 	}
 
 	rc = CIFSSMBLock(xid, tcon, netfid, current->tgid, length,
 			 flock->fl_start, 0, 1,
-			 type | LOCKING_ANDX_SHARED_LOCK, 0, 0);
+			 type | server->vals->shared_lock_type, 0, 0);
 	if (rc == 0) {
 		rc = CIFSSMBLock(xid, tcon, netfid, current->tgid,
 				 length, flock->fl_start, 1, 0,
-				 type | LOCKING_ANDX_SHARED_LOCK,
-				 0, 0);
+				 type | server->vals->shared_lock_type, 0, 0);
 		flock->fl_type = F_RDLCK;
 		if (rc != 0)
 			cERROR(1, "Error unlocking previously locked "
@@ -1307,6 +1312,7 @@ cifs_setlk(struct file *file,  struct file_lock *flock, __u32 type,
 	__u64 length = 1 + flock->fl_end - flock->fl_start;
 	struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data;
 	struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
+	struct TCP_Server_Info *server = tcon->ses->server;
 	__u16 netfid = cfile->netfid;
 
 	if (posix_lck) {
@@ -1316,7 +1322,7 @@ cifs_setlk(struct file *file,  struct file_lock *flock, __u32 type,
 		if (!rc || rc < 0)
 			return rc;
 
-		if (type & LOCKING_ANDX_SHARED_LOCK)
+		if (type & server->vals->shared_lock_type)
 			posix_lock_type = CIFS_RDLCK;
 		else
 			posix_lock_type = CIFS_WRLCK;
@@ -1380,11 +1386,13 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *flock)
 		"end: %lld", cmd, flock->fl_flags, flock->fl_type,
 		flock->fl_start, flock->fl_end);
 
-	cifs_read_flock(flock, &type, &lock, &unlock, &wait_flag);
-
-	cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
 	cfile = (struct cifsFileInfo *)file->private_data;
 	tcon = tlink_tcon(cfile->tlink);
+
+	cifs_read_flock(flock, &type, &lock, &unlock, &wait_flag,
+			tcon->ses->server);
+
+	cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
 	netfid = cfile->netfid;
 	cinode = CIFS_I(file->f_path.dentry->d_inode);
 

fs/cifs/smb1ops.c

@@ -20,6 +20,7 @@
 #include "cifsglob.h"
 #include "cifsproto.h"
 #include "cifs_debug.h"
+#include "cifspdu.h"
 
 /*
  * An NT cancel request header looks just like the original request except:
@@ -65,4 +66,8 @@ struct smb_version_operations smb1_operations = {
 
 struct smb_version_values smb1_values = {
 	.version_string = SMB1_VERSION_STRING,
+	.large_lock_type = LOCKING_ANDX_LARGE_FILES,
+	.exclusive_lock_type = 0,
+	.shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
+	.unlock_lock_type = 0,
 };