73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
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/*
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* Copyright 1997 Transmeta Corporation - All Rights Reserved
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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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* ----------------------------------------------------------------------- */
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#ifndef _UAPI_LINUX_AUTO_FS_H
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#define _UAPI_LINUX_AUTO_FS_H
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#include <linux/types.h>
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#include <linux/limits.h>
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#ifndef __KERNEL__
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#include <sys/ioctl.h>
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#endif /* __KERNEL__ */
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/* This file describes autofs v3 */
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#define AUTOFS_PROTO_VERSION 3
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/* Range of protocol versions defined */
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#define AUTOFS_MAX_PROTO_VERSION AUTOFS_PROTO_VERSION
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#define AUTOFS_MIN_PROTO_VERSION AUTOFS_PROTO_VERSION
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/*
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* The wait_queue_token (autofs_wqt_t) is part of a structure which is passed
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* back to the kernel via ioctl from userspace. On architectures where 32- and
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* 64-bit userspace binaries can be executed it's important that the size of
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* autofs_wqt_t stays constant between 32- and 64-bit Linux kernels so that we
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* do not break the binary ABI interface by changing the structure size.
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*/
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#if defined(__ia64__) || defined(__alpha__) /* pure 64bit architectures */
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typedef unsigned long autofs_wqt_t;
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#else
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typedef unsigned int autofs_wqt_t;
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#endif
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/* Packet types */
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#define autofs_ptype_missing 0 /* Missing entry (mount request) */
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#define autofs_ptype_expire 1 /* Expire entry (umount request) */
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struct autofs_packet_hdr {
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int proto_version; /* Protocol version */
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int type; /* Type of packet */
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};
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struct autofs_packet_missing {
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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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/* v3 expire (via ioctl) */
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struct autofs_packet_expire {
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struct autofs_packet_hdr hdr;
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int len;
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char name[NAME_MAX+1];
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};
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#define AUTOFS_IOC_READY _IO(0x93, 0x60)
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#define AUTOFS_IOC_FAIL _IO(0x93, 0x61)
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#define AUTOFS_IOC_CATATONIC _IO(0x93, 0x62)
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#define AUTOFS_IOC_PROTOVER _IOR(0x93, 0x63, int)
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#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93, 0x64, compat_ulong_t)
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#define AUTOFS_IOC_SETTIMEOUT _IOWR(0x93, 0x64, unsigned long)
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#define AUTOFS_IOC_EXPIRE _IOR(0x93, 0x65, struct autofs_packet_expire)
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#endif /* _UAPI_LINUX_AUTO_FS_H */
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