/* -*- linux-c -*- ------------------------------------------------------- * * * linux/include/linux/auto_fs.h * * Copyright 1997 Transmeta Corporation - All Rights Reserved * * This file is part of the Linux kernel and is made available under * the terms of the GNU General Public License, version 2, or at your * option, any later version, incorporated herein by reference. * * ----------------------------------------------------------------------- */ #ifndef _LINUX_AUTO_FS_H #define _LINUX_AUTO_FS_H #ifdef __KERNEL__ #include <linux/fs.h> #include <linux/limits.h> #include <asm/types.h> #endif /* __KERNEL__ */ #include <linux/ioctl.h> /* This file describes autofs v3 */ #define AUTOFS_PROTO_VERSION 3 /* Range of protocol versions defined */ #define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION #define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION /* * Architectures where both 32- and 64-bit binaries can be executed * on 64-bit kernels need this. This keeps the structure format * uniform, and makes sure the wait_queue_token isn't too big to be * passed back down to the kernel. * * This assumes that on these architectures: * mode 32 bit 64 bit * ------------------------- * int 32 bit 32 bit * long 32 bit 64 bit * * If so, 32-bit user-space code should be backwards compatible. */ #if defined(__sparc__) || defined(__mips__) || defined(__x86_64__) \ || defined(__powerpc__) || defined(__s390__) typedef unsigned int autofs_wqt_t; #else typedef unsigned long autofs_wqt_t; #endif /* Packet types */ #define autofs_ptype_missing 0 /* Missing entry (mount request) */ #define autofs_ptype_expire 1 /* Expire entry (umount request) */ struct autofs_packet_hdr { int proto_version; /* Protocol version */ int type; /* Type of packet */ }; struct autofs_packet_missing { struct autofs_packet_hdr hdr; autofs_wqt_t wait_queue_token; int len; char name[NAME_MAX+1]; }; /* v3 expire (via ioctl) */ struct autofs_packet_expire { struct autofs_packet_hdr hdr; int len; char name[NAME_MAX+1]; }; #define AUTOFS_IOC_READY _IO(0x93,0x60) #define AUTOFS_IOC_FAIL _IO(0x93,0x61) #define AUTOFS_IOC_CATATONIC _IO(0x93,0x62) #define AUTOFS_IOC_PROTOVER _IOR(0x93,0x63,int) #define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93,0x64,unsigned long) #define AUTOFS_IOC_EXPIRE _IOR(0x93,0x65,struct autofs_packet_expire) #endif /* _LINUX_AUTO_FS_H */