| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* -*- linux-c -*- ------------------------------------------------------- * |
| 2 | * |
| 3 | * linux/include/linux/auto_fs.h |
| 4 | * |
| 5 | * Copyright 1997 Transmeta Corporation - All Rights Reserved |
| 6 | * |
| 7 | * This file is part of the Linux kernel and is made available under |
| 8 | * the terms of the GNU General Public License, version 2, or at your |
| 9 | * 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 | #ifdef __KERNEL__ |
| 18 | #include <linux/fs.h> |
| 19 | #include <linux/limits.h> |
| 20 | #include <asm/types.h> |
| 21 | #endif /* __KERNEL__ */ |
| 22 | |
| 23 | #include <linux/ioctl.h> |
| 24 | |
| 25 | /* This file describes autofs v3 */ |
| 26 | #define AUTOFS_PROTO_VERSION 3 |
| 27 | |
| 28 | /* Range of protocol versions defined */ |
| 29 | #define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION |
| 30 | #define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION |
| 31 | |
| 32 | /* |
| 33 | * Architectures where both 32- and 64-bit binaries can be executed |
| 34 | * on 64-bit kernels need this. This keeps the structure format |
| 35 | * uniform, and makes sure the wait_queue_token isn't too big to be |
| 36 | * passed back down to the kernel. |
| 37 | * |
| 38 | * This assumes that on these architectures: |
| 39 | * mode 32 bit 64 bit |
| 40 | * ------------------------- |
| 41 | * int 32 bit 32 bit |
| 42 | * long 32 bit 64 bit |
| 43 | * |
| 44 | * If so, 32-bit user-space code should be backwards compatible. |
| 45 | */ |
| 46 | |
| 47 | #if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) \ |
| 48 | || defined(__powerpc__) || defined(__s390__) |
| 49 | typedef unsigned int autofs_wqt_t; |
| 50 | #else |
| 51 | typedef unsigned long autofs_wqt_t; |
| 52 | #endif |
| 53 | |
| 54 | /* Packet types */ |
| 55 | #define autofs_ptype_missing 0 /* Missing entry (mount request) */ |
| 56 | #define autofs_ptype_expire 1 /* Expire entry (umount request) */ |
| 57 | |
| 58 | struct autofs_packet_hdr { |
| 59 | int proto_version; /* Protocol version */ |
| 60 | int type; /* Type of packet */ |
| 61 | }; |
| 62 | |
| 63 | struct autofs_packet_missing { |
| 64 | struct autofs_packet_hdr hdr; |
| 65 | autofs_wqt_t wait_queue_token; |
| 66 | int len; |
| 67 | char name[NAME_MAX+1]; |
| 68 | }; |
| 69 | |
| 70 | /* v3 expire (via ioctl) */ |
| 71 | struct autofs_packet_expire { |
| 72 | struct autofs_packet_hdr hdr; |
| 73 | int len; |
| 74 | char name[NAME_MAX+1]; |
| 75 | }; |
| 76 | |
| 77 | #define AUTOFS_IOC_READY _IO(0x93,0x60) |
| 78 | #define AUTOFS_IOC_FAIL _IO(0x93,0x61) |
| 79 | #define AUTOFS_IOC_CATATONIC _IO(0x93,0x62) |
| 80 | #define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int) |
| 81 | #define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long) |
| 82 | #define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire) |
| 83 | |
| 84 | #endif /* _LINUX_AUTO_FS_H */ |