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-rw-r--r--include/linux/auto_fs.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/include/linux/auto_fs.h b/include/linux/auto_fs.h
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+/* -*- 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 */