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 * Architectures where both 32- and 64-bit binaries can be executed 32 * on 64-bit kernels need this. This keeps the structure format 33 * uniform, and makes sure the wait_queue_token isn't too big to be 34 * passed back down to the kernel. 35 * 36 * This assumes that on these architectures: 37 * mode 32 bit 64 bit 38 * ------------------------- 39 * int 32 bit 32 bit 40 * long 32 bit 64 bit 41 * 42 * If so, 32-bit user-space code should be backwards compatible. 43 */ 44 45 #if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) \ 46 || defined(__powerpc__) || defined(__s390__) 47 typedef unsigned int autofs_wqt_t; 48 #else 49 typedef unsigned long autofs_wqt_t; 50 #endif 51 52 /* Packet types */ 53 #define autofs_ptype_missing 0 /* Missing entry (mount request) */ 54 #define autofs_ptype_expire 1 /* Expire entry (umount request) */ 55 56 struct autofs_packet_hdr { 57 int proto_version; /* Protocol version */ 58 int type; /* Type of packet */ 59 }; 60 61 struct autofs_packet_missing { 62 struct autofs_packet_hdr hdr; 63 autofs_wqt_t wait_queue_token; 64 int len; 65 char name[NAME_MAX+1]; 66 }; 67 68 /* v3 expire (via ioctl) */ 69 struct autofs_packet_expire { 70 struct autofs_packet_hdr hdr; 71 int len; 72 char name[NAME_MAX+1]; 73 }; 74 75 #define AUTOFS_IOC_READY _IO(0x93,0x60) 76 #define AUTOFS_IOC_FAIL _IO(0x93,0x61) 77 #define AUTOFS_IOC_CATATONIC _IO(0x93,0x62) 78 #define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int) 79 #define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,compat_ulong_t) 80 #define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long) 81 #define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire) 82 83 #endif /* _UAPI_LINUX_AUTO_FS_H */ 84