On Thu, Nov 23, 2006 at 01:54:40AM -0800, ramana wrote:
> First thanks to Ian for providing valuable info for arrving at this
> conclusion.
>
> What happened? There is old autofs4 module which supported autofs4
> protocol. Autofs team developed new autofs5 protocol but new module
> given name as autofs4.
>
> So this is where the problem is. New module is backward compatible with
> autofs4 protcol and also supports autofs5 but with the name 'autofs4'.
>
> Everything ok but with the autofs headers.
>
> What can be done?
>
> Until this is resolved, just compile autodir with old
> /usr/src/linux/auto_fs4.h and everthing should work fine.
>
> That is the reason older autodir compiled with older header file
> working fine with new kernel module autofs4 (which is autofs5)
>
> Since I do not have access to new autofs module on my Fedora, the
> testing is going fine -- which is compiled with older autofs module.
>
> And I can not say 100% sure about. (as I said I do not have access to
> the latest module and I can not confirm it myself doing tests).
>
The autofs4->autofs5 update was quite clear. What I find strange
is the problem in cooperating with current (enclosed) auto_fs4.h
header file, which is quite old. Also I see an autofs5 related struct
in the union autofs_packet_union, but shouldn't all that thought
for being back-compatible?
--
Francesco P. Lovergine
/* -*- c -*-
* linux/include/linux/auto_fs4.h
*
* Copyright 1999-2000 Jeremy Fitzhardinge <[EMAIL PROTECTED]>
*
* This file is part of the Linux kernel and is made available under
* the terms of the GNU General Public License, version 2, or at your
* option, any later version, incorporated herein by reference.
*/
#ifndef _LINUX_AUTO_FS4_H
#define _LINUX_AUTO_FS4_H
/* Include common v3 definitions */
#include <linux/auto_fs.h>
/* autofs v4 definitions */
#undef AUTOFS_PROTO_VERSION
#undef AUTOFS_MIN_PROTO_VERSION
#undef AUTOFS_MAX_PROTO_VERSION
#define AUTOFS_PROTO_VERSION 5
#define AUTOFS_MIN_PROTO_VERSION 3
#define AUTOFS_MAX_PROTO_VERSION 5
#define AUTOFS_PROTO_SUBVERSION 0
/* Mask for expire behaviour */
#define AUTOFS_EXP_IMMEDIATE 1
#define AUTOFS_EXP_LEAVES 2
/* Daemon notification packet types */
enum autofs_notify {
NFY_NONE,
NFY_MOUNT,
NFY_EXPIRE
};
/* Kernel protocol version 4 packet types */
/* Expire entry (umount request) */
#define autofs_ptype_expire_multi 2
/* Kernel protocol version 5 packet types */
/* Indirect mount missing and expire requests. */
#define autofs_ptype_missing_indirect 3
#define autofs_ptype_expire_indirect 4
/* Direct mount missing and expire requests */
#define autofs_ptype_missing_direct 5
#define autofs_ptype_expire_direct 6
/* v4 multi expire (via pipe) */
struct autofs_packet_expire_multi {
struct autofs_packet_hdr hdr;
autofs_wqt_t wait_queue_token;
int len;
char name[NAME_MAX+1];
};
/* autofs v5 common packet struct */
struct autofs_v5_packet {
struct autofs_packet_hdr hdr;
autofs_wqt_t wait_queue_token;
__u32 dev;
__u64 ino;
__u32 uid;
__u32 gid;
__u32 pid;
__u32 tgid;
__u32 len;
char name[NAME_MAX+1];
};
typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
union autofs_packet_union {
struct autofs_packet_hdr hdr;
struct autofs_packet_missing missing;
struct autofs_packet_expire expire;
struct autofs_packet_expire_multi expire_multi;
struct autofs_v5_packet v5_packet;
};
#define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93,0x66,int)
#define AUTOFS_IOC_EXPIRE_INDIRECT AUTOFS_IOC_EXPIRE_MULTI
#define AUTOFS_IOC_EXPIRE_DIRECT AUTOFS_IOC_EXPIRE_MULTI
#define AUTOFS_IOC_PROTOSUBVER _IOR(0x93,0x67,int)
#define AUTOFS_IOC_ASKREGHOST _IOR(0x93,0x68,int)
#define AUTOFS_IOC_TOGGLEREGHOST _IOR(0x93,0x69,int)
#define AUTOFS_IOC_ASKUMOUNT _IOR(0x93,0x70,int)
#endif /* _LINUX_AUTO_FS4_H */
