1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2 /* 3 * Copyright 1997 Transmeta Corporation - All Rights Reserved 4 * 5 * This file is part of the Linux kernel and is made available under 6 * the terms of the GNU General Public License, version 2, or at your 7 * option, any later version, incorporated herein by reference. 8 * 9 * ----------------------------------------------------------------------- */ 10 11 12 #ifndef _UAPI_LINUX_AUTO_FS_H 13 #define _UAPI_LINUX_AUTO_FS_H 14 15 #include <linux/types.h> 16 #include <linux/limits.h> 17 #ifndef __KERNEL__ 18 #include <sys/ioctl.h> 19 #endif /* __KERNEL__ */ 20 21 22 /* This file describes autofs v3 */ 23 #define AUTOFS_PROTO_VERSION 3 24 25 /* Range of protocol versions defined */ 26 #define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION 27 #define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION 28 29 /* 30 * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed 31 * back to the kernel via ioctl from userspace. On architectures where 32- and 32 * 64-bit userspace binaries can be executed it's important that the size of 33 * autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we 34 * do not break the binary ABI interface by changing the structure size. 35 */ 36 #if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */ 37 typedef unsigned long autofs_wqt_t; 38 #else 39 typedef unsigned int autofs_wqt_t; 40 #endif 41 42 /* Packet types */ 43 #define autofs_ptype_missing 0 /* Missing entry (mount request) */ 44 #define autofs_ptype_expire 1 /* Expire entry (umount request) */ 45 46 struct autofs_packet_hdr { 47 int proto_version; /* Protocol version */ 48 int type; /* Type of packet */ 49 }; 50 51 struct autofs_packet_missing { 52 struct autofs_packet_hdr hdr; 53 autofs_wqt_t wait_queue_token; 54 int len; 55 char name[NAME_MAX+1]; 56 }; 57 58 /* v3 expire (via ioctl) */ 59 struct autofs_packet_expire { 60 struct autofs_packet_hdr hdr; 61 int len; 62 char name[NAME_MAX+1]; 63 }; 64 65 #define AUTOFS_IOCTL 0x93 66 67 enum { 68 AUTOFS_IOC_READY_CMD = 0x60, 69 AUTOFS_IOC_FAIL_CMD, 70 AUTOFS_IOC_CATATONIC_CMD, 71 AUTOFS_IOC_PROTOVER_CMD, 72 AUTOFS_IOC_SETTIMEOUT_CMD, 73 AUTOFS_IOC_EXPIRE_CMD, 74 }; 75 76 #define AUTOFS_IOC_READY _IO(AUTOFS_IOCTL, AUTOFS_IOC_READY_CMD) 77 #define AUTOFS_IOC_FAIL _IO(AUTOFS_IOCTL, AUTOFS_IOC_FAIL_CMD) 78 #define AUTOFS_IOC_CATATONIC _IO(AUTOFS_IOCTL, AUTOFS_IOC_CATATONIC_CMD) 79 #define AUTOFS_IOC_PROTOVER _IOR(AUTOFS_IOCTL, AUTOFS_IOC_PROTOVER_CMD, int) 80 #define AUTOFS_IOC_SETTIMEOUT32 _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, compat_ulong_t) 81 #define AUTOFS_IOC_SETTIMEOUT _IOWR(AUTOFS_IOCTL, AUTOFS_IOC_SETTIMEOUT_CMD, unsigned long) 82 #define AUTOFS_IOC_EXPIRE _IOR(AUTOFS_IOCTL, AUTOFS_IOC_EXPIRE_CMD, struct autofs_packet_expire) 83 84 #endif /* _UAPI_LINUX_AUTO_FS_H */ 85
