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 #include <linux/limits.h> 16 #ifndef __KERNEL__ 17 #include <sys/ioctl.h> 18 #endif /* __KERNEL__ */ 19 20 21 /* This file describes autofs v3 */ 22 #define AUTOFS_PROTO_VERSION 3 23 24 /* Range of protocol versions defined */ 25 #define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION 26 #define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION 27 28 /* 29 * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed 30 * back to the kernel via ioctl from userspace. On architectures where 32- and 31 * 64-bit userspace binaries can be executed it's important that the size of 32 * autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we 33 * do not break the binary ABI interface by changing the structure size. 34 */ 35 #if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */ 36 typedef unsigned long autofs_wqt_t; 37 #else 38 typedef unsigned int autofs_wqt_t; 39 #endif 40 41 /* Packet types */ 42 #define autofs_ptype_missing 0 /* Missing entry (mount request) */ 43 #define autofs_ptype_expire 1 /* Expire entry (umount request) */ 44 45 struct autofs_packet_hdr { 46 int proto_version; /* Protocol version */ 47 int type; /* Type of packet */ 48 }; 49 50 struct autofs_packet_missing { 51 struct autofs_packet_hdr hdr; 52 autofs_wqt_t wait_queue_token; 53 int len; 54 char name[NAME_MAX+1]; 55 }; 56 57 /* v3 expire (via ioctl) */ 58 struct autofs_packet_expire { 59 struct autofs_packet_hdr hdr; 60 int len; 61 char name[NAME_MAX+1]; 62 }; 63 64 #define AUTOFS_IOCTL 0x93 65 66 enum { 67 AUTOFS_IOC_READY_CMD = 0x60, 68 AUTOFS_IOC_FAIL_CMD, 69 AUTOFS_IOC_CATATONIC_CMD, 70 AUTOFS_IOC_PROTOVER_CMD, 71 AUTOFS_IOC_SETTIMEOUT_CMD, 72 AUTOFS_IOC_EXPIRE_CMD, 73 }; 74 75 #define AUTOFS_IOC_READY _IO(AUTOFS_IOCTL, AUTOFS_IOC_READY_CMD) 76 #define AUTOFS_IOC_FAIL _IO(AUTOFS_IOCTL, AUTOFS_IOC_FAIL_CMD) 77 #define AUTOFS_IOC_CATATONIC _IO(AUTOFS_IOCTL, AUTOFS_IOC_CATATONIC_CMD) 78 #define AUTOFS_IOC_PROTOVER _IOR(AUTOFS_IOCTL, AUTOFS_IOC_PROTOVER_CMD, int) 79 #define AUTOFS_IOC_SETTIMEOUT32 _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, compat_ulong_t) 80 #define AUTOFS_IOC_SETTIMEOUT _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, unsigned long) 81 #define AUTOFS_IOC_EXPIRE _IOR(AUTOFS_IOCTL, AUTOFS_IOC_EXPIRE_CMD, struct autofs_packet_expire) 82 83 #endif /* _UAPI_LINUX_AUTO_FS_H */ 84