X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fcifs%2Ffcntl.c;h=da12b482ebe5364d1bc4e6dba9bba25ffa25e12c;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=4403fc37855b83120460a787ae263450ca818728;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/fs/cifs/fcntl.c b/fs/cifs/fcntl.c
index 4403fc378..da12b482e 100644
--- a/fs/cifs/fcntl.c
+++ b/fs/cifs/fcntl.c
@@ -27,71 +27,96 @@
 #include "cifsproto.h"
 #include "cifs_unicode.h"
 #include "cifs_debug.h"
+#include "cifsfs.h"
 
-int cifs_directory_notify(unsigned long arg, struct file * file)
+static __u32 convert_to_cifs_notify_flags(unsigned long fcntl_notify_flags)
+{
+	__u32 cifs_ntfy_flags = 0;
+
+	/* No way on Linux VFS to ask to monitor xattr
+	changes (and no stream support either */
+	if(fcntl_notify_flags & DN_ACCESS) {
+		cifs_ntfy_flags |= FILE_NOTIFY_CHANGE_LAST_ACCESS;
+	}
+	if(fcntl_notify_flags & DN_MODIFY) {
+		/* What does this mean on directories? */
+		cifs_ntfy_flags |= FILE_NOTIFY_CHANGE_LAST_WRITE |
+			FILE_NOTIFY_CHANGE_SIZE;
+	}
+	if(fcntl_notify_flags & DN_CREATE) {
+		cifs_ntfy_flags |= FILE_NOTIFY_CHANGE_CREATION | 
+			FILE_NOTIFY_CHANGE_LAST_WRITE;
+	}
+	if(fcntl_notify_flags & DN_DELETE) {
+		cifs_ntfy_flags |= FILE_NOTIFY_CHANGE_LAST_WRITE;
+	}
+	if(fcntl_notify_flags & DN_RENAME) {
+		/* BB review this - checking various server behaviors */
+		cifs_ntfy_flags |= FILE_NOTIFY_CHANGE_DIR_NAME | 
+			FILE_NOTIFY_CHANGE_FILE_NAME;
+	}
+	if(fcntl_notify_flags & DN_ATTRIB) {
+		cifs_ntfy_flags |= FILE_NOTIFY_CHANGE_SECURITY | 
+			FILE_NOTIFY_CHANGE_ATTRIBUTES;
+	}
+/*	if(fcntl_notify_flags & DN_MULTISHOT) {
+		cifs_ntfy_flags |= ;
+	} */ /* BB fixme - not sure how to handle this with CIFS yet */
+
+
+	return cifs_ntfy_flags;
+}
+
+int cifs_dir_notify(struct file * file, unsigned long arg)
 {
 	int xid;
 	int rc = -EINVAL;
+	int oplock = FALSE;
 	struct cifs_sb_info *cifs_sb;
 	struct cifsTconInfo *pTcon;
 	char *full_path = NULL;
+	__u32 filter = FILE_NOTIFY_CHANGE_NAME | FILE_NOTIFY_CHANGE_ATTRIBUTES;
+	__u16 netfid;
 
-	xid = GetXid();
-	cifs_sb = CIFS_SB(file->f_dentry->d_sb);
-	pTcon = cifs_sb->tcon;
-	full_path = build_path_from_dentry(file->f_dentry);
-	cFYI(1,("cifs dir notify on file %s",full_path));
-	/* CIFSSMBNotify */
-	FreeXid(xid);
-	return rc;
-}
 
+	if(experimEnabled == 0)
+		return 0;
 
-long cifs_fcntl(int file_desc, unsigned int command, unsigned long arg,
-				struct file * file)
-{
-	/* Few few file control functions need to be specially mapped. So far
-	only:
-		F_NOTIFY (for directory change notification)
-	And eventually:
-		F_GETLEASE
-		F_SETLEASE 
-	need to be mapped here. The others either already are mapped downstream
-	or do not need to go to the server (client only sideeffects):
-		F_DUPFD:
-		F_GETFD:
-		F_SETFD:
-		F_GETFL:
-		F_SETFL:
-		F_GETLK:
-		F_SETLK:
-		F_SETLKW:
-		F_GETOWN:
-		F_SETOWN:
-		F_GETSIG:
-		F_SETSIG:
-	*/
-	long rc = 0;
+	xid = GetXid();
+	cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+	pTcon = cifs_sb->tcon;
 
-	cFYI(1,("cifs_fcntl: command %d with arg %lx",command,arg)); /* BB removeme BB */
+	full_path = build_path_from_dentry(file->f_path.dentry);
 
-	switch (command) {
-	case F_NOTIFY:
-		/* let the local call have a chance to fail first */
-		rc = generic_file_fcntl(file_desc,command,arg,file);
-		if(rc)
-			return rc;
-		else {
-			/* local call succeeded try to do remote notify to
-			pick up changes from other clients to server file */
-			cifs_directory_notify(arg, file);
-			/* BB add case to long and return rc from above */
-			return rc;
+	if(full_path == NULL) {
+		rc = -ENOMEM;
+	} else {
+		cFYI(1,("dir notify on file %s Arg 0x%lx",full_path,arg));
+		rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, 
+			GENERIC_READ | SYNCHRONIZE, 0 /* create options */,
+			&netfid, &oplock,NULL, cifs_sb->local_nls,
+			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
+		/* BB fixme - add this handle to a notify handle list */
+		if(rc) {
+			cFYI(1,("Could not open directory for notify"));
+		} else {
+			filter = convert_to_cifs_notify_flags(arg);
+			if(filter != 0) {
+				rc = CIFSSMBNotify(xid, pTcon, 
+					0 /* no subdirs */, netfid,
+					filter, file, arg & DN_MULTISHOT,
+					cifs_sb->local_nls);
+			} else {
+				rc = -EINVAL;
+			}
+			/* BB add code to close file eventually (at unmount
+			it would close automatically but may be a way
+			to do it easily when inode freed or when
+			notify info is cleared/changed */
+			cFYI(1,("notify rc %d",rc));
 		}
-		break;
-	default:
-		break;
 	}
-	return generic_file_fcntl(file_desc,command,arg,file);
+	
+	FreeXid(xid);
+	return rc;
 }
-