Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 117 insertions, 0 deletions

diff --git a/fs/cifs/fcntl.c b/fs/cifs/fcntl.c
new file mode 100644
index 0000000..9d24c40
--- /dev/null
+++ b/fs/cifs/fcntl.c
@@ -0,0 +1,117 @@
+/*
+ *   fs/cifs/fcntl.c
+ *
+ *   vfs operations that deal with the file control API
+ * 
+ *   Copyright (C) International Business Machines  Corp., 2003,2004
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ *   This library is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Lesser General Public License as published
+ *   by the Free Software Foundation; either version 2.1 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This library 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 Lesser General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Lesser General Public License
+ *   along with this library; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <linux/fcntl.h>
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "cifs_unicode.h"
+#include "cifs_debug.h"
+#include "cifsfs.h"
+
+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;
+
+	down(&file->f_dentry->d_sb->s_vfs_rename_sem);
+	full_path = build_path_from_dentry(file->f_dentry);
+	up(&file->f_dentry->d_sb->s_vfs_rename_sem);
+
+	if(full_path == NULL) {
+		rc = -ENOMEM;
+	} else {
+		cERROR(1,("cifs dir notify on file %s with arg 0x%lx",full_path,arg)); /* BB removeme BB */
+		rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, 
+			GENERIC_READ | SYNCHRONIZE, 0 /* create options */,
+			&netfid, &oplock,NULL, cifs_sb->local_nls);
+		/* BB fixme - add this handle to a notify handle list */
+		if(rc) {
+			cERROR(1,("Could not open directory for notify"));  /* BB remove BB */
+		} else {
+			filter = convert_to_cifs_notify_flags(arg);
+			if(filter != 0) {
+				rc = CIFSSMBNotify(xid, pTcon, 0 /* no subdirs */, netfid, 
+					filter, 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 */
+            cERROR(1,("notify rc %d",rc));
+		}
+	}
+	
+	FreeXid(xid);
+	return rc;
+}