1 /* internal.h: internal procfs definitions
3 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/sched.h>
13 #include <linux/proc_fs.h>
14 #include <linux/binfmts.h>
15 struct ctl_table_header;
18 extern struct proc_dir_entry proc_root;
19 extern void proc_self_init(void);
20 #ifdef CONFIG_PROC_SYSCTL
21 extern int proc_sys_init(void);
22 extern void sysctl_head_put(struct ctl_table_header *head);
24 static inline void proc_sys_init(void) { }
25 static inline void sysctl_head_put(struct ctl_table_header *head) { }
28 extern int proc_net_init(void);
30 static inline int proc_net_init(void) { return 0; }
33 extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
34 struct pid *pid, struct task_struct *task);
35 extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
36 struct pid *pid, struct task_struct *task);
37 extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
38 struct pid *pid, struct task_struct *task);
39 extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
40 struct pid *pid, struct task_struct *task);
41 extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
43 extern const struct file_operations proc_tid_children_operations;
44 extern const struct file_operations proc_pid_maps_operations;
45 extern const struct file_operations proc_tid_maps_operations;
46 extern const struct file_operations proc_pid_numa_maps_operations;
47 extern const struct file_operations proc_tid_numa_maps_operations;
48 extern const struct file_operations proc_pid_smaps_operations;
49 extern const struct file_operations proc_tid_smaps_operations;
50 extern const struct file_operations proc_clear_refs_operations;
51 extern const struct file_operations proc_pagemap_operations;
52 extern const struct file_operations proc_net_operations;
53 extern const struct inode_operations proc_net_inode_operations;
54 extern const struct inode_operations proc_pid_link_inode_operations;
56 struct proc_maps_private {
58 struct task_struct *task;
60 struct vm_area_struct *tail_vma;
63 struct mempolicy *task_mempolicy;
67 void proc_init_inodecache(void);
69 static inline struct pid *proc_pid(struct inode *inode)
71 return PROC_I(inode)->pid;
74 static inline struct task_struct *get_proc_task(struct inode *inode)
76 return get_pid_task(proc_pid(inode), PIDTYPE_PID);
79 static inline int proc_fd(struct inode *inode)
81 return PROC_I(inode)->fd;
84 static inline int task_dumpable(struct task_struct *task)
92 dumpable = get_dumpable(mm);
94 if (dumpable == SUID_DUMP_USER)
99 static inline int pid_delete_dentry(const struct dentry * dentry)
101 /* Is the task we represent dead?
102 * If so, then don't put the dentry on the lru list,
103 * kill it immediately.
105 return !proc_pid(dentry->d_inode)->tasks[PIDTYPE_PID].first;
108 static inline unsigned name_to_int(struct dentry *dentry)
110 const char *name = dentry->d_name.name;
111 int len = dentry->d_name.len;
114 if (len > 1 && *name == '0')
117 unsigned c = *name++ - '0';
130 struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
131 struct dentry *dentry);
132 int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
138 int (*release)(struct inode *, struct file *);
141 void pde_users_dec(struct proc_dir_entry *pde);
143 extern spinlock_t proc_subdir_lock;
145 struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, unsigned int);
146 int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
147 unsigned long task_vsize(struct mm_struct *);
148 unsigned long task_statm(struct mm_struct *,
149 unsigned long *, unsigned long *, unsigned long *, unsigned long *);
150 void task_mem(struct seq_file *, struct mm_struct *);
152 static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
154 atomic_inc(&pde->count);
157 void pde_put(struct proc_dir_entry *pde);
159 int proc_fill_super(struct super_block *);
160 struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);
161 int proc_remount(struct super_block *sb, int *flags, char *data);
164 * These are generic /proc routines that use the internal
165 * "struct proc_dir_entry" tree to traverse the filesystem.
167 * The /proc root directory has extended versions to take care
168 * of the /proc/<pid> subdirectories.
170 int proc_readdir(struct file *, void *, filldir_t);
171 struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);
176 typedef struct dentry *instantiate_t(struct inode *, struct dentry *,
177 struct task_struct *, const void *);
178 int proc_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
179 const char *name, int len,
180 instantiate_t instantiate, struct task_struct *task, const void *ptr);
181 int pid_revalidate(struct dentry *dentry, unsigned int flags);
182 struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *task);
183 extern const struct dentry_operations pid_dentry_operations;
184 int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
185 int proc_setattr(struct dentry *dentry, struct iattr *attr);
187 extern const struct inode_operations proc_ns_dir_inode_operations;
188 extern const struct file_operations proc_ns_dir_operations;