#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;
struct cifsTconInfo *pTcon;
char *full_path = NULL;
__u32 filter = FILE_NOTIFY_CHANGE_NAME | FILE_NOTIFY_CHANGE_ATTRIBUTES;
- __u16 netfid;
+ __u16 netfid;
+
+
+ if(experimEnabled == 0)
+ return 0;
xid = GetXid();
- cifs_sb = CIFS_SB(file->f_dentry->d_sb);
+ cifs_sb = CIFS_SB(file->f_path.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);
+ full_path = build_path_from_dentry(file->f_path.dentry);
if(full_path == NULL) {
rc = -ENOMEM;
} else {
- cFYI(1,("cifs dir notify on file %s",full_path));
+ 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);
+ &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 {
- rc = CIFSSMBNotify(xid, pTcon, 1 /* subdirs */, netfid,
- filter, cifs_sb->local_nls);
+ 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));
}
}
FreeXid(xid);
return rc;
}
-
-
-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;
-
- cFYI(1,("cifs_fcntl: command %d with arg %lx",command,arg)); /* BB removeme BB */
-
- 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;
- }
- break;
- default:
- break;
- }
- return generic_file_fcntl(file_desc,command,arg,file);
-}
-