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 _UAPI_LINUX_AUTO_FS_H 15 #define _UAPI_LINUX_AUTO_FS_H 16 17 #include <linux/types.h> 18 #ifndef __KERNEL__ 19 #include <sys/ioctl.h> 20 #endif /* __KERNEL__ */ 21 22 23 /* This file describes autofs v3 */ 24 #define AUTOFS_PROTO_VERSION 3 25 26 /* Range of protocol versions defined */ 27 #define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION 28 #define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION 29 30 /* 31 * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed 32 * back to the kernel via ioctl from userspace. On architectures where 32- and 33 * 64-bit userspace binaries can be executed it's important that the size of 34 * autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we 35 * do not break the binary ABI interface by changing the structure size. 36 */ 37 #if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */ 38 typedef unsigned long autofs_wqt_t; 39 #else 40 typedef unsigned int autofs_wqt_t; 41 #endif 42 43 /* Packet types */ 44 #define autofs_ptype_missing 0 /* Missing entry (mount request) */ 45 #define autofs_ptype_expire 1 /* Expire entry (umount request) */ 46 47 struct autofs_packet_hdr { 48 int proto_version; /* Protocol version */ 49 int type; /* Type of packet */ 50 }; 51 52 struct autofs_packet_missing { 53 struct autofs_packet_hdr hdr; 54 autofs_wqt_t wait_queue_token; 55 int len; 56 char name[NAME_MAX+1]; 57 }; 58 59 /* v3 expire (via ioctl) */ 60 struct autofs_packet_expire { 61 struct autofs_packet_hdr hdr; 62 int len; 63 char name[NAME_MAX+1]; 64 }; 65 66 #define AUTOFS_IOC_READY _IO(0x93,0x60) 67 #define AUTOFS_IOC_FAIL _IO(0x93,0x61) 68 #define AUTOFS_IOC_CATATONIC _IO(0x93,0x62) 69 #define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int) 70 #define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,compat_ulong_t) 71 #define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long) 72 #define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire) 73 74 #endif /* _UAPI_LINUX_AUTO_FS_H */ 75
