1 /* 2 * Copyright 1997 Transmeta Corporation - All Rights Reserved 3 * 4 * This file is part of the Linux kernel and is made available under 5 * the terms of the GNU General Public License, version 2, or at your 6 * option, any later version, incorporated herein by reference. 7 * 8 * ----------------------------------------------------------------------- */ 9 10 11 #ifndef _UAPI_LINUX_AUTO_FS_H 12 #define _UAPI_LINUX_AUTO_FS_H 13 14 #include <linux/types.h> 15 #ifndef __KERNEL__ 16 #include <sys/ioctl.h> 17 #endif /* __KERNEL__ */ 18 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 * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed 29 * back to the kernel via ioctl from userspace. On architectures where 32- and 30 * 64-bit userspace binaries can be executed it's important that the size of 31 * autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we 32 * do not break the binary ABI interface by changing the structure size. 33 */ 34 #if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */ 35 typedef unsigned long autofs_wqt_t; 36 #else 37 typedef unsigned int autofs_wqt_t; 38 #endif 39 40 /* Packet types */ 41 #define autofs_ptype_missing 0 /* Missing entry (mount request) */ 42 #define autofs_ptype_expire 1 /* Expire entry (umount request) */ 43 44 struct autofs_packet_hdr { 45 int proto_version; /* Protocol version */ 46 int type; /* Type of packet */ 47 }; 48 49 struct autofs_packet_missing { 50 struct autofs_packet_hdr hdr; 51 autofs_wqt_t wait_queue_token; 52 int len; 53 char name[NAME_MAX+1]; 54 }; 55 56 /* v3 expire (via ioctl) */ 57 struct autofs_packet_expire { 58 struct autofs_packet_hdr hdr; 59 int len; 60 char name[NAME_MAX+1]; 61 }; 62 63 #define AUTOFS_IOC_READY _IO(0x93, 0x60) 64 #define AUTOFS_IOC_FAIL _IO(0x93, 0x61) 65 #define AUTOFS_IOC_CATATONIC _IO(0x93, 0x62) 66 #define AUTOFS_IOC_PROTOVER _IOR(0x93, 0x63, int) 67 #define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93, 0x64, compat_ulong_t) 68 #define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93, 0x64, unsigned long) 69 #define AUTOFS_IOC_EXPIRE _IOR(0x93, 0x65, struct autofs_packet_expire) 70 71 #endif /* _UAPI_LINUX_AUTO_FS_H */ 72