patch-2.1.37 linux/include/linux/auto_fs.h

• Lines: 185
• Date: Tue May 13 21:59:54 1997
• Orig file: v2.1.36/linux/include/linux/auto_fs.h
• Orig date: Fri Apr 4 08:52:25 1997

diff -u --recursive --new-file v2.1.36/linux/include/linux/auto_fs.h linux/include/linux/auto_fs.h
@@ -1,14 +1,14 @@
-/* -*- linux-c -*- --------------------------------------------------------- *
- *
+/* -*- linux-c -*- ------------------------------------------------------- *
+ *   
  * linux/include/linux/auto_fs.h
  *
- *  Copyright 1997 Transmeta Corporation -- All Rights Reserved
+ *   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
@@ -20,11 +20,11 @@
 #include <linux/ioctl.h>
 #include <asm/types.h>
 
-#define AUTOFS_PROTO_VERSION 2
+#define AUTOFS_PROTO_VERSION 3
 
 enum autofs_packet_type {
-	autofs_ptype_missing,	/* Missing entry (create wait queue) */
-	/* ...need more in the future... */
+	autofs_ptype_missing,	/* Missing entry (mount request) */
+	autofs_ptype_expire,	/* Expire entry (umount request) */
 };
 
 struct autofs_packet_hdr {
@@ -39,139 +39,24 @@
 	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)
-
-#ifdef __KERNEL__
-
-#include <linux/wait.h>
-#include <linux/sched.h>
-
-#if LINUX_VERSION_CODE < 0x20100
-
-#include <asm/segment.h>
-#define copy_to_user	memcpy_tofs
-#define copy_from_user	memcpy_fromfs
-
-#else
-
-#include <asm/uaccess.h>
-#define register_symtab(x)	do { } while (0)
-
-#endif
-
-#ifndef DPRINTK
-#ifdef DEBUG
-#define DPRINTK(D) printk D;
-#else
-#define DPRINTK(D)
-#endif
-#endif
-
-#define AUTOFS_SUPER_MAGIC 0x0187
-
-/* Structures associated with the root directory hash */
-
-#define AUTOFS_HASH_SIZE 67
-
-typedef u32 autofs_hash_t;	/* Type returned by autofs_hash() */
-
-struct autofs_dir_ent {
-	autofs_hash_t hash;
-	struct autofs_dir_ent *next;
-	struct autofs_dir_ent **back;
-	char *name;
-	int len;
-	ino_t ino;
-	time_t expiry;		/* Reserved for use in failed-lookup cache */
-};
-
-struct autofs_dirhash {
-	struct autofs_dir_ent *h[AUTOFS_HASH_SIZE];
-};
-
-struct autofs_wait_queue {
-	unsigned long wait_queue_token;
-	struct wait_queue *queue;
-	struct autofs_wait_queue *next;
-	/* We use the following to see what we are waiting for */
-	autofs_hash_t hash;
-	int len;
-	char *name;
-	/* This is for status reporting upon return */
-	int status;
-	int wait_ctr;
-};
-
-struct autofs_symlink {
+struct autofs_packet_expire {
+	struct autofs_packet_hdr hdr;
 	int len;
-	char *data;
-	time_t mtime;
+	char name[NAME_MAX+1];
 };
 
-#define AUTOFS_MAX_SYMLINKS 256
-
-#define AUTOFS_ROOT_INO      1
-#define AUTOFS_FIRST_SYMLINK 2
-#define AUTOFS_FIRST_DIR_INO (AUTOFS_FIRST_SYMLINK+AUTOFS_MAX_SYMLINKS)
-
-#define AUTOFS_SYMLINK_BITMAP_LEN ((AUTOFS_MAX_SYMLINKS+31)/32)
-
-#ifndef END_OF_TIME
-#define END_OF_TIME ((time_t)((unsigned long)((time_t)(~0UL)) >> 1))
-#endif
-
-struct autofs_sb_info {
-	struct file *pipe;
-	pid_t oz_pgrp;
-	int catatonic;
-	ino_t next_dir_ino;
-	struct autofs_wait_queue *queues; /* Wait queue pointer */
-	struct autofs_dirhash dirhash; /* Root directory hash */
-	struct autofs_symlink symlink[AUTOFS_MAX_SYMLINKS];
-	u32 symlink_bitmap[AUTOFS_SYMLINK_BITMAP_LEN];
-};
+#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)
 
-/* autofs_oz_mode(): do we see the man behind the curtain? */
-static inline int autofs_oz_mode(struct autofs_sb_info *sbi) {
-	return sbi->catatonic || current->pgrp == sbi->oz_pgrp;
-}
+#ifdef __KERNEL__
 
 /* Init function */
 int init_autofs_fs(void);
 
-/* Hash operations */
-
-autofs_hash_t autofs_hash(const char *,int);
-void autofs_initialize_hash(struct autofs_dirhash *);
-struct autofs_dir_ent *autofs_hash_lookup(const struct autofs_dirhash *,autofs_hash_t,const char *,int);
-void autofs_hash_insert(struct autofs_dirhash *,struct autofs_dir_ent *);
-void autofs_hash_delete(struct autofs_dir_ent *);
-struct autofs_dir_ent *autofs_hash_enum(const struct autofs_dirhash *,off_t *);
-void autofs_hash_nuke(struct autofs_dirhash *);
-
-/* Operations structures */
-
-extern struct inode_operations autofs_root_inode_operations;
-extern struct inode_operations autofs_symlink_inode_operations;
-extern struct inode_operations autofs_dir_inode_operations;
-
-/* Initializing function */
-
-struct super_block *autofs_read_super(struct super_block *, void *,int);
-
-/* Queue management functions */
-
-int autofs_wait(struct autofs_sb_info *,autofs_hash_t,const char *,int);
-int autofs_wait_release(struct autofs_sb_info *,unsigned long,int);
-void autofs_catatonic_mode(struct autofs_sb_info *);
-
-#ifdef DEBUG
-void autofs_say(const char *name, int len);
-#else
-#define autofs_say(n,l)
-#endif
-
 #endif /* __KERNEL__ */
+
 #endif /* _LINUX_AUTO_FS_H */