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Diffstat (limited to 'fs/autofs/autofs_i.h')
-rw-r--r-- | fs/autofs/autofs_i.h | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/fs/autofs/autofs_i.h b/fs/autofs/autofs_i.h deleted file mode 100644 index 901a3e67ec45..000000000000 --- a/fs/autofs/autofs_i.h +++ /dev/null | |||
@@ -1,165 +0,0 @@ | |||
1 | /* -*- linux-c -*- ------------------------------------------------------- * | ||
2 | * | ||
3 | * linux/fs/autofs/autofs_i.h | ||
4 | * | ||
5 | * Copyright 1997-1998 Transmeta Corporation - All Rights Reserved | ||
6 | * | ||
7 | * This file is part of the Linux kernel and is made available under | ||
8 | * the terms of the GNU General Public License, version 2, or at your | ||
9 | * option, any later version, incorporated herein by reference. | ||
10 | * | ||
11 | * ----------------------------------------------------------------------- */ | ||
12 | |||
13 | /* Internal header file for autofs */ | ||
14 | |||
15 | #include <linux/auto_fs.h> | ||
16 | |||
17 | /* This is the range of ioctl() numbers we claim as ours */ | ||
18 | #define AUTOFS_IOC_FIRST AUTOFS_IOC_READY | ||
19 | #define AUTOFS_IOC_COUNT 32 | ||
20 | |||
21 | #include <linux/kernel.h> | ||
22 | #include <linux/slab.h> | ||
23 | #include <linux/time.h> | ||
24 | #include <linux/string.h> | ||
25 | #include <linux/wait.h> | ||
26 | #include <linux/dcache.h> | ||
27 | #include <linux/namei.h> | ||
28 | #include <linux/mount.h> | ||
29 | #include <linux/sched.h> | ||
30 | |||
31 | #include <asm/current.h> | ||
32 | #include <asm/uaccess.h> | ||
33 | |||
34 | #ifdef DEBUG | ||
35 | #define DPRINTK(D) (printk D) | ||
36 | #else | ||
37 | #define DPRINTK(D) ((void)0) | ||
38 | #endif | ||
39 | |||
40 | /* | ||
41 | * If the daemon returns a negative response (AUTOFS_IOC_FAIL) then the | ||
42 | * kernel will keep the negative response cached for up to the time given | ||
43 | * here, although the time can be shorter if the kernel throws the dcache | ||
44 | * entry away. This probably should be settable from user space. | ||
45 | */ | ||
46 | #define AUTOFS_NEGATIVE_TIMEOUT (60*HZ) /* 1 minute */ | ||
47 | |||
48 | /* Structures associated with the root directory hash table */ | ||
49 | |||
50 | #define AUTOFS_HASH_SIZE 67 | ||
51 | |||
52 | struct autofs_dir_ent { | ||
53 | int hash; | ||
54 | char *name; | ||
55 | int len; | ||
56 | ino_t ino; | ||
57 | struct dentry *dentry; | ||
58 | /* Linked list of entries */ | ||
59 | struct autofs_dir_ent *next; | ||
60 | struct autofs_dir_ent **back; | ||
61 | /* The following entries are for the expiry system */ | ||
62 | unsigned long last_usage; | ||
63 | struct list_head exp; | ||
64 | }; | ||
65 | |||
66 | struct autofs_dirhash { | ||
67 | struct autofs_dir_ent *h[AUTOFS_HASH_SIZE]; | ||
68 | struct list_head expiry_head; | ||
69 | }; | ||
70 | |||
71 | struct autofs_wait_queue { | ||
72 | wait_queue_head_t queue; | ||
73 | struct autofs_wait_queue *next; | ||
74 | autofs_wqt_t wait_queue_token; | ||
75 | /* We use the following to see what we are waiting for */ | ||
76 | int hash; | ||
77 | int len; | ||
78 | char *name; | ||
79 | /* This is for status reporting upon return */ | ||
80 | int status; | ||
81 | int wait_ctr; | ||
82 | }; | ||
83 | |||
84 | struct autofs_symlink { | ||
85 | char *data; | ||
86 | int len; | ||
87 | time_t mtime; | ||
88 | }; | ||
89 | |||
90 | #define AUTOFS_MAX_SYMLINKS 256 | ||
91 | |||
92 | #define AUTOFS_ROOT_INO 1 | ||
93 | #define AUTOFS_FIRST_SYMLINK 2 | ||
94 | #define AUTOFS_FIRST_DIR_INO (AUTOFS_FIRST_SYMLINK+AUTOFS_MAX_SYMLINKS) | ||
95 | |||
96 | #define AUTOFS_SYMLINK_BITMAP_LEN \ | ||
97 | ((AUTOFS_MAX_SYMLINKS+((sizeof(long)*1)-1))/(sizeof(long)*8)) | ||
98 | |||
99 | #define AUTOFS_SBI_MAGIC 0x6d4a556d | ||
100 | |||
101 | struct autofs_sb_info { | ||
102 | u32 magic; | ||
103 | struct file *pipe; | ||
104 | struct pid *oz_pgrp; | ||
105 | int catatonic; | ||
106 | struct super_block *sb; | ||
107 | unsigned long exp_timeout; | ||
108 | ino_t next_dir_ino; | ||
109 | struct autofs_wait_queue *queues; /* Wait queue pointer */ | ||
110 | struct autofs_dirhash dirhash; /* Root directory hash */ | ||
111 | struct autofs_symlink symlink[AUTOFS_MAX_SYMLINKS]; | ||
112 | unsigned long symlink_bitmap[AUTOFS_SYMLINK_BITMAP_LEN]; | ||
113 | }; | ||
114 | |||
115 | static inline struct autofs_sb_info *autofs_sbi(struct super_block *sb) | ||
116 | { | ||
117 | return (struct autofs_sb_info *)(sb->s_fs_info); | ||
118 | } | ||
119 | |||
120 | /* autofs_oz_mode(): do we see the man behind the curtain? (The | ||
121 | processes which do manipulations for us in user space sees the raw | ||
122 | filesystem without "magic".) */ | ||
123 | |||
124 | static inline int autofs_oz_mode(struct autofs_sb_info *sbi) { | ||
125 | return sbi->catatonic || task_pgrp(current) == sbi->oz_pgrp; | ||
126 | } | ||
127 | |||
128 | /* Hash operations */ | ||
129 | |||
130 | void autofs_initialize_hash(struct autofs_dirhash *); | ||
131 | struct autofs_dir_ent *autofs_hash_lookup(const struct autofs_dirhash *,struct qstr *); | ||
132 | void autofs_hash_insert(struct autofs_dirhash *,struct autofs_dir_ent *); | ||
133 | void autofs_hash_delete(struct autofs_dir_ent *); | ||
134 | struct autofs_dir_ent *autofs_hash_enum(const struct autofs_dirhash *,off_t *,struct autofs_dir_ent *); | ||
135 | void autofs_hash_dputall(struct autofs_dirhash *); | ||
136 | void autofs_hash_nuke(struct autofs_sb_info *); | ||
137 | |||
138 | /* Expiration-handling functions */ | ||
139 | |||
140 | void autofs_update_usage(struct autofs_dirhash *,struct autofs_dir_ent *); | ||
141 | struct autofs_dir_ent *autofs_expire(struct super_block *,struct autofs_sb_info *, struct vfsmount *mnt); | ||
142 | |||
143 | /* Operations structures */ | ||
144 | |||
145 | extern const struct inode_operations autofs_root_inode_operations; | ||
146 | extern const struct inode_operations autofs_symlink_inode_operations; | ||
147 | extern const struct file_operations autofs_root_operations; | ||
148 | |||
149 | /* Initializing function */ | ||
150 | |||
151 | int autofs_fill_super(struct super_block *, void *, int); | ||
152 | void autofs_kill_sb(struct super_block *sb); | ||
153 | struct inode *autofs_iget(struct super_block *, unsigned long); | ||
154 | |||
155 | /* Queue management functions */ | ||
156 | |||
157 | int autofs_wait(struct autofs_sb_info *,struct qstr *); | ||
158 | int autofs_wait_release(struct autofs_sb_info *,autofs_wqt_t,int); | ||
159 | void autofs_catatonic_mode(struct autofs_sb_info *); | ||
160 | |||
161 | #ifdef DEBUG | ||
162 | void autofs_say(const char *name, int len); | ||
163 | #else | ||
164 | #define autofs_say(n,l) ((void)0) | ||
165 | #endif | ||