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; if (experimEnabled == 0) return 0; xid = GetXid(); #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20) cifs_sb = CIFS_SB(file->f_dentry->d_sb); pTcon = cifs_sb->tcon; full_path = build_path_from_dentry(file->f_dentry); #else cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); pTcon = cifs_sb->tcon; full_path = build_path_from_dentry(file->f_path.dentry); #endif 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, FILE_SHARE_ALL, 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)); } } FreeXid(xid); return rc; }
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; }