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 _LINUX_AUTO_FS_H 15 #define _LINUX_AUTO_FS_H 16 17 #ifdef __KERNEL__ 18 #include <linux/fs.h> 19 #include <linux/limits.h> 20 #include <asm/types.h> 21 #endif /* __KERNEL__ */ 22 23 #include <linux/ioctl.h> 24 25 /* This file describes autofs v3 */ 26 #define AUTOFS_PROTO_VERSION 3 27 28 /* Range of protocol versions defined */ 29 #define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION 30 #define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION 31 32 /* 33 * Architectures where both 32- and 64-bit binaries can be executed 34 * on 64-bit kernels need this. This keeps the structure format 35 * uniform, and makes sure the wait_queue_token isn't too big to be 36 * passed back down to the kernel. 37 * 38 * This assumes that on these architectures: 39 * mode 32 bit 64 bit 40 * ------------------------- 41 * int 32 bit 32 bit 42 * long 32 bit 64 bit 43 * 44 * If so, 32-bit user-space code should be backwards compatible. 45 */ 46 47 #if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) \ 48 || defined(__powerpc__) || defined(__s390__) 49 typedef unsigned int autofs_wqt_t; 50 #else 51 typedef unsigned long autofs_wqt_t; 52 #endif 53 54 /* Packet types */ 55 #define autofs_ptype_missing 0 /* Missing entry (mount request) */ 56 #define autofs_ptype_expire 1 /* Expire entry (umount request) */ 57 58 struct autofs_packet_hdr { 59 int proto_version; /* Protocol version */ 60 int type; /* Type of packet */ 61 }; 62 63 struct autofs_packet_missing { 64 struct autofs_packet_hdr hdr; 65 autofs_wqt_t wait_queue_token; 66 int len; 67 char name[NAME_MAX+1]; 68 }; 69 70 /* v3 expire (via ioctl) */ 71 struct autofs_packet_expire { 72 struct autofs_packet_hdr hdr; 73 int len; 74 char name[NAME_MAX+1]; 75 }; 76 77 #define AUTOFS_IOC_READY _IO(0x93,0x60) 78 #define AUTOFS_IOC_FAIL _IO(0x93,0x61) 79 #define AUTOFS_IOC_CATATONIC _IO(0x93,0x62) 80 #define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int) 81 #define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long) 82 #define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire) 83 84 #endif /* _LINUX_AUTO_FS_H */ 85