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; }
35 unsigned long largest_chunk;
39 #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
40 extern void get_vmalloc_info(struct vmalloc_info *vmi);
43 #define VMALLOC_TOTAL 0UL
44 #define get_vmalloc_info(vmi) \
47 (vmi)->largest_chunk = 0; \
51 extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
52 struct pid *pid, struct task_struct *task);
53 extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
54 struct pid *pid, struct task_struct *task);
55 extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
56 struct pid *pid, struct task_struct *task);
57 extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
58 struct pid *pid, struct task_struct *task);
59 extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
61 extern const struct file_operations proc_tid_children_operations;
62 extern const struct file_operations proc_pid_maps_operations;
63 extern const struct file_operations proc_tid_maps_operations;
64 extern const struct file_operations proc_pid_numa_maps_operations;
65 extern const struct file_operations proc_tid_numa_maps_operations;
66 extern const struct file_operations proc_pid_smaps_operations;
67 extern const struct file_operations proc_tid_smaps_operations;
68 extern const struct file_operations proc_clear_refs_operations;
69 extern const struct file_operations proc_pagemap_operations;
70 extern const struct file_operations proc_net_operations;
71 extern const struct inode_operations proc_net_inode_operations;
72 extern const struct inode_operations proc_pid_link_inode_operations;
74 struct proc_maps_private {
76 struct task_struct *task;
78 struct vm_area_struct *tail_vma;
81 struct mempolicy *task_mempolicy;
85 void proc_init_inodecache(void);
87 static inline struct pid *proc_pid(struct inode *inode)
89 return PROC_I(inode)->pid;
92 static inline struct task_struct *get_proc_task(struct inode *inode)
94 return get_pid_task(proc_pid(inode), PIDTYPE_PID);
97 static inline int proc_fd(struct inode *inode)
99 return PROC_I(inode)->fd;
102 static inline int task_dumpable(struct task_struct *task)
105 struct mm_struct *mm;
110 dumpable = get_dumpable(mm);
112 if (dumpable == SUID_DUMP_USER)
117 static inline unsigned name_to_int(struct dentry *dentry)
119 const char *name = dentry->d_name.name;
120 int len = dentry->d_name.len;
123 if (len > 1 && *name == '0')
126 unsigned c = *name++ - '0';
142 extern int pid_delete_dentry(const struct dentry *);
144 struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
145 struct dentry *dentry);
146 int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
153 struct completion *c;
156 void proc_entry_rundown(struct proc_dir_entry *);
158 extern spinlock_t proc_subdir_lock;
160 struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, unsigned int);
161 int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
162 unsigned long task_vsize(struct mm_struct *);
163 unsigned long task_statm(struct mm_struct *,
164 unsigned long *, unsigned long *, unsigned long *, unsigned long *);
165 void task_mem(struct seq_file *, struct mm_struct *);
167 static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
169 atomic_inc(&pde->count);
172 void pde_put(struct proc_dir_entry *pde);
174 int proc_fill_super(struct super_block *);
175 struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);
176 int proc_remount(struct super_block *sb, int *flags, char *data);
179 * These are generic /proc routines that use the internal
180 * "struct proc_dir_entry" tree to traverse the filesystem.
182 * The /proc root directory has extended versions to take care
183 * of the /proc/<pid> subdirectories.
185 int proc_readdir(struct file *, void *, filldir_t);
186 struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);
191 typedef struct dentry *instantiate_t(struct inode *, struct dentry *,
192 struct task_struct *, const void *);
193 int proc_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
194 const char *name, int len,
195 instantiate_t instantiate, struct task_struct *task, const void *ptr);
196 int pid_revalidate(struct dentry *dentry, unsigned int flags);
197 struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *task);
198 extern const struct dentry_operations pid_dentry_operations;
199 int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
200 int proc_setattr(struct dentry *dentry, struct iattr *attr);
202 extern const struct inode_operations proc_ns_dir_inode_operations;
203 extern const struct file_operations proc_ns_dir_operations;
205 extern int proc_setup_self(struct super_block *);