Aha, I didn't know that, now I get: kernel: fs/cifs/cifsfs.c: Devname: //SCLFS20091030/public flags: 0 kernel: fs/cifs/connect.c: Domain name set kernel: fs/cifs/connect.c: Username: sbon kernel: fs/cifs/connect.c: file mode: 0x1ed dir mode: 0x1ed kernel: fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 118 with uid: 0 kernel: fs/cifs/connect.c: UNC: \\SCLFS20091030\p//SCLFS20091030/public ip: SCLFS20091030\p//SCLFS20091030/public kernel: fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 118) rc = -22 kernel: CIFS VFS: cifs_mount failed w/return code = -22 Obviously something goes wrong with the mountcommand: mount_resource: mount //SCLFS20091030/public /mnt/fuse-workspace/65e9e42684129ad79f96d981c665cae1 cifs user=sbon,password=sjbon0701,uid=1000,gid=1000,domain=BONONLINE,rw,acl,user_xattr,cifsacl,posixpaths,nodfs,unc=\\SCLFS20091030\p//SCLFS20091030/public The original mountcommand in my programm adds the ip address, which is totally overwritten. I guess everything get messed up with the backslashes. The code I use: /* add the unc */ *(vfsdata+len0)='\\'; len0++; *(vfsdata+len0)='\\'; len0++; memcpy(vfsdata+len0, smb_server->name, strlen(smb_server->name)); len0+=strlen(smb_server->name); *(vfsdata+len0)='\\'; len0++; memcpy(vfsdata+len0, smb_share->name, strlen(smb_share->name)); len0+=strlen(smb_share->name); if (strlen(smb_server->ipv4address)>0) { /* add ip */ len1=sprintf(vfsdata+len0, ",ip=%s", smb_server->ipv4address); len0+=len1; } Some hint?? Stef -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html