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[/] [hf-risc/] [trunk/] [tools/] [riscv-gnu-toolchain-master/] [linux-headers/] [include/] [linux/] [auto_fs4.h] - Blame information for rev 13

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1 13 serginhofr 
/* -*- c -*-
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 * linux/include/linux/auto_fs4.h
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 *
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 * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
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 *
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 * This file is part of the Linux kernel and is made available under
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 * the terms of the GNU General Public License, version 2, or at your
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 * option, any later version, incorporated herein by reference.
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 */
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#ifndef _LINUX_AUTO_FS4_H
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#define _LINUX_AUTO_FS4_H
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/* Include common v3 definitions */
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#include <linux/types.h>
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#include <linux/auto_fs.h>
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/* autofs v4 definitions */
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#undef AUTOFS_PROTO_VERSION
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#undef AUTOFS_MIN_PROTO_VERSION
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#undef AUTOFS_MAX_PROTO_VERSION
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#define AUTOFS_PROTO_VERSION            5
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#define AUTOFS_MIN_PROTO_VERSION        3
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#define AUTOFS_MAX_PROTO_VERSION        5
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#define AUTOFS_PROTO_SUBVERSION         2
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/* Mask for expire behaviour */
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#define AUTOFS_EXP_IMMEDIATE            1
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#define AUTOFS_EXP_LEAVES               2
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#define AUTOFS_TYPE_ANY                 0U
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#define AUTOFS_TYPE_INDIRECT            1U
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#define AUTOFS_TYPE_DIRECT              2U
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#define AUTOFS_TYPE_OFFSET              4U
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static __inline__ void set_autofs_type_indirect(unsigned int *type)
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{
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        *type = AUTOFS_TYPE_INDIRECT;
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        return;
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}
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static __inline__ unsigned int autofs_type_indirect(unsigned int type)
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{
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        return (type == AUTOFS_TYPE_INDIRECT);
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}
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static __inline__ void set_autofs_type_direct(unsigned int *type)
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{
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        *type = AUTOFS_TYPE_DIRECT;
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        return;
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}
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static __inline__ unsigned int autofs_type_direct(unsigned int type)
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{
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        return (type == AUTOFS_TYPE_DIRECT);
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}
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static __inline__ void set_autofs_type_offset(unsigned int *type)
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{
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        *type = AUTOFS_TYPE_OFFSET;
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        return;
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}
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static __inline__ unsigned int autofs_type_offset(unsigned int type)
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{
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        return (type == AUTOFS_TYPE_OFFSET);
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}
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static __inline__ unsigned int autofs_type_trigger(unsigned int type)
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{
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        return (type == AUTOFS_TYPE_DIRECT || type == AUTOFS_TYPE_OFFSET);
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}
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/*
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 * This isn't really a type as we use it to say "no type set" to
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 * indicate we want to search for "any" mount in the
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 * autofs_dev_ioctl_ismountpoint() device ioctl function.
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 */
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static __inline__ void set_autofs_type_any(unsigned int *type)
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{
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        *type = AUTOFS_TYPE_ANY;
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        return;
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}
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static __inline__ unsigned int autofs_type_any(unsigned int type)
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{
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        return (type == AUTOFS_TYPE_ANY);
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}
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/* Daemon notification packet types */
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enum autofs_notify {
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        NFY_NONE,
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        NFY_MOUNT,
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        NFY_EXPIRE
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};
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/* Kernel protocol version 4 packet types */
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/* Expire entry (umount request) */
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#define autofs_ptype_expire_multi       2
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/* Kernel protocol version 5 packet types */
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/* Indirect mount missing and expire requests. */
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#define autofs_ptype_missing_indirect   3
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#define autofs_ptype_expire_indirect    4
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/* Direct mount missing and expire requests */
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#define autofs_ptype_missing_direct     5
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#define autofs_ptype_expire_direct      6
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/* v4 multi expire (via pipe) */
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struct autofs_packet_expire_multi {
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        struct autofs_packet_hdr hdr;
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        autofs_wqt_t wait_queue_token;
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        int len;
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        char name[NAME_MAX+1];
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};
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union autofs_packet_union {
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        struct autofs_packet_hdr hdr;
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        struct autofs_packet_missing missing;
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        struct autofs_packet_expire expire;
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        struct autofs_packet_expire_multi expire_multi;
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};
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/* autofs v5 common packet struct */
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struct autofs_v5_packet {
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        struct autofs_packet_hdr hdr;
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        autofs_wqt_t wait_queue_token;
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        __u32 dev;
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        __u64 ino;
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        __u32 uid;
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        __u32 gid;
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        __u32 pid;
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        __u32 tgid;
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        __u32 len;
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        char name[NAME_MAX+1];
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};
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typedef struct autofs_v5_packet autofs_packet_missing_indirect_t;
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typedef struct autofs_v5_packet autofs_packet_expire_indirect_t;
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typedef struct autofs_v5_packet autofs_packet_missing_direct_t;
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typedef struct autofs_v5_packet autofs_packet_expire_direct_t;
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union autofs_v5_packet_union {
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        struct autofs_packet_hdr hdr;
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        struct autofs_v5_packet v5_packet;
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        autofs_packet_missing_indirect_t missing_indirect;
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        autofs_packet_expire_indirect_t expire_indirect;
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        autofs_packet_missing_direct_t missing_direct;
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        autofs_packet_expire_direct_t expire_direct;
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};
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#define AUTOFS_IOC_EXPIRE_MULTI         _IOW(0x93,0x66,int)
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#define AUTOFS_IOC_EXPIRE_INDIRECT      AUTOFS_IOC_EXPIRE_MULTI
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#define AUTOFS_IOC_EXPIRE_DIRECT        AUTOFS_IOC_EXPIRE_MULTI
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#define AUTOFS_IOC_PROTOSUBVER          _IOR(0x93,0x67,int)
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#define AUTOFS_IOC_ASKUMOUNT            _IOR(0x93,0x70,int)
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#endif /* _LINUX_AUTO_FS4_H */

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