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