| 1 | /* -*- linux-c -*- ------------------------------------------------------- * |
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| 2 | * |
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| 3 | * linux/include/linux/auto_fs.h |
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| 4 | * |
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| 5 | * Copyright 1997 Transmeta Corporation - All Rights Reserved |
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| 6 | * |
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| 7 | * This file is part of the Linux kernel and is made available under |
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| 8 | * the terms of the GNU General Public License, version 2, or at your |
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| 9 | * option, any later version, incorporated herein by reference. |
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| 10 | * |
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| 11 | * ----------------------------------------------------------------------- */ |
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| 12 | |
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| 13 | |
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| 14 | #ifndef _LINUX_AUTO_FS_H |
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| 15 | #define _LINUX_AUTO_FS_H |
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| 16 | |
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| 17 | #include <linux/ioctl.h> |
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| 18 | |
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| 19 | /* This file describes autofs v3 */ |
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| 20 | #define AUTOFS_PROTO_VERSION 3 |
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| 21 | |
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| 22 | /* Range of protocol versions defined */ |
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| 23 | #define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION |
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| 24 | #define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION |
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| 25 | |
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| 26 | /* |
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| 27 | * Architectures where both 32- and 64-bit binaries can be executed |
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| 28 | * on 64-bit kernels need this. This keeps the structure format |
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| 29 | * uniform, and makes sure the wait_queue_token isn't too big to be |
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| 30 | * passed back down to the kernel. |
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| 31 | * |
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| 32 | * This assumes that on these architectures: |
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| 33 | * mode 32 bit 64 bit |
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| 34 | * ------------------------- |
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| 35 | * int 32 bit 32 bit |
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| 36 | * long 32 bit 64 bit |
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| 37 | * |
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| 38 | * If so, 32-bit user-space code should be backwards compatible. |
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| 39 | */ |
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| 40 | |
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| 41 | #if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) \ |
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| 42 | || defined(__powerpc__) || defined(__s390__) |
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| 43 | typedef unsigned int autofs_wqt_t; |
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| 44 | #else |
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| 45 | typedef unsigned long autofs_wqt_t; |
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| 46 | #endif |
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| 47 | |
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| 48 | /* Packet types */ |
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| 49 | #define autofs_ptype_missing 0 /* Missing entry (mount request) */ |
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| 50 | #define autofs_ptype_expire 1 /* Expire entry (umount request) */ |
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| 51 | |
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| 52 | struct autofs_packet_hdr { |
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| 53 | int proto_version; /* Protocol version */ |
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| 54 | int type; /* Type of packet */ |
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| 55 | }; |
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| 56 | |
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| 57 | struct autofs_packet_missing { |
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| 58 | struct autofs_packet_hdr hdr; |
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| 59 | autofs_wqt_t wait_queue_token; |
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| 60 | int len; |
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| 61 | char name[NAME_MAX+1]; |
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| 62 | }; |
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| 63 | |
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| 64 | /* v3 expire (via ioctl) */ |
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| 65 | struct autofs_packet_expire { |
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| 66 | struct autofs_packet_hdr hdr; |
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| 67 | int len; |
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| 68 | char name[NAME_MAX+1]; |
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| 69 | }; |
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| 70 | |
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| 71 | #define AUTOFS_IOC_READY _IO(0x93,0x60) |
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| 72 | #define AUTOFS_IOC_FAIL _IO(0x93,0x61) |
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| 73 | #define AUTOFS_IOC_CATATONIC _IO(0x93,0x62) |
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| 74 | #define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int) |
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| 75 | #define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long) |
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| 76 | #define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire) |
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| 77 | |
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| 78 | #endif /* _LINUX_AUTO_FS_H */ |
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