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01: /* -*- linux-c -*- ------------------------------------------------------- *
02:  *   
03:  * linux/include/linux/auto_fs.h
04:  *
05:  *   Copyright 1997 Transmeta Corporation - All Rights Reserved
06:  *
07:  * This file is part of the Linux kernel and is made available under
08:  * the terms of the GNU General Public License, version 2, or at your
09:  * option, any later version, incorporated herein by reference.
10:  *
11:  * ----------------------------------------------------------------------- */
12: 
13: 
14: #ifndef _LINUX_AUTO_FS_H
15: #define _LINUX_AUTO_FS_H
16: 
17: #include <linux/types.h>
18: #include <sys/ioctl.h>
19: 
20: /* This file describes autofs v3 */
21: #define AUTOFS_PROTO_VERSION    3
22: 
23: /* Range of protocol versions defined */
24: #define AUTOFS_MAX_PROTO_VERSION        AUTOFS_PROTO_VERSION
25: #define AUTOFS_MIN_PROTO_VERSION        AUTOFS_PROTO_VERSION
26: 
27: /*
28:  * Architectures where both 32- and 64-bit binaries can be executed
29:  * on 64-bit kernels need this.  This keeps the structure format
30:  * uniform, and makes sure the wait_queue_token isn't too big to be
31:  * passed back down to the kernel.
32:  *
33:  * This assumes that on these architectures:
34:  * mode     32 bit    64 bit
35:  * -------------------------
36:  * int      32 bit    32 bit
37:  * long     32 bit    64 bit
38:  *
39:  * If so, 32-bit user-space code should be backwards compatible.
40:  */
41: 
42: #if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) \
43:  || defined(__powerpc__) || defined(__s390__)
44: typedef unsigned int autofs_wqt_t;
45: #else
46: typedef unsigned long autofs_wqt_t;
47: #endif
48: 
49: /* Packet types */
50: #define autofs_ptype_missing    0       /* Missing entry (mount request) */
51: #define autofs_ptype_expire     1       /* Expire entry (umount request) */
52: 
53: struct autofs_packet_hdr {
54:         int proto_version;              /* Protocol version */
55:         int type;                       /* Type of packet */
56: };
57: 
58: struct autofs_packet_missing {
59:         struct autofs_packet_hdr hdr;
60:         autofs_wqt_t wait_queue_token;
61:         int len;
62:         char name[NAME_MAX+1];
63: };      
64: 
65: /* v3 expire (via ioctl) */
66: struct autofs_packet_expire {
67:         struct autofs_packet_hdr hdr;
68:         int len;
69:         char name[NAME_MAX+1];
70: };
71: 
72: #define AUTOFS_IOC_READY      _IO(0x93,0x60)
73: #define AUTOFS_IOC_FAIL       _IO(0x93,0x61)
74: #define AUTOFS_IOC_CATATONIC  _IO(0x93,0x62)
75: #define AUTOFS_IOC_PROTOVER   _IOR(0x93,0x63,int)
76: #define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,compat_ulong_t)
77: #define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long)
78: #define AUTOFS_IOC_EXPIRE     _IOR(0x93,0x65,struct autofs_packet_expire)
79: 
80: #endif /* _LINUX_AUTO_FS_H */
81: 

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