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 struct ctl_table_header;
17 extern struct proc_dir_entry proc_root;
18 #ifdef CONFIG_PROC_SYSCTL
19 extern int proc_sys_init(void);
20 extern void sysctl_head_put(struct ctl_table_header *head);
22 static inline void proc_sys_init(void) { }
23 static inline void sysctl_head_put(struct ctl_table_header *head) { }
26 extern int proc_net_init(void);
28 static inline int proc_net_init(void) { return 0; }
33 unsigned long largest_chunk;
37 #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
38 extern void get_vmalloc_info(struct vmalloc_info *vmi);
41 #define VMALLOC_TOTAL 0UL
42 #define get_vmalloc_info(vmi) \
45 (vmi)->largest_chunk = 0; \
49 extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
50 struct pid *pid, struct task_struct *task);
51 extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
52 struct pid *pid, struct task_struct *task);
53 extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
54 struct pid *pid, struct task_struct *task);
55 extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
56 struct pid *pid, struct task_struct *task);
57 extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
59 extern const struct file_operations proc_tid_children_operations;
60 extern const struct file_operations proc_pid_maps_operations;
61 extern const struct file_operations proc_tid_maps_operations;
62 extern const struct file_operations proc_pid_numa_maps_operations;
63 extern const struct file_operations proc_tid_numa_maps_operations;
64 extern const struct file_operations proc_pid_smaps_operations;
65 extern const struct file_operations proc_tid_smaps_operations;
66 extern const struct file_operations proc_clear_refs_operations;
67 extern const struct file_operations proc_pagemap_operations;
68 extern const struct file_operations proc_net_operations;
69 extern const struct inode_operations proc_net_inode_operations;
70 extern const struct inode_operations proc_pid_link_inode_operations;
72 struct proc_maps_private {
74 struct task_struct *task;
76 struct vm_area_struct *tail_vma;
79 struct mempolicy *task_mempolicy;
83 void proc_init_inodecache(void);
85 static inline struct pid *proc_pid(struct inode *inode)
87 return PROC_I(inode)->pid;
90 static inline struct task_struct *get_proc_task(struct inode *inode)
92 return get_pid_task(proc_pid(inode), PIDTYPE_PID);
95 static inline int proc_fd(struct inode *inode)
97 return PROC_I(inode)->fd;
100 static inline int task_dumpable(struct task_struct *task)
103 struct mm_struct *mm;
108 dumpable = get_dumpable(mm);
110 if (dumpable == SUID_DUMPABLE_ENABLED)
115 static inline int pid_delete_dentry(const struct dentry * dentry)
117 /* Is the task we represent dead?
118 * If so, then don't put the dentry on the lru list,
119 * kill it immediately.
121 return !proc_pid(dentry->d_inode)->tasks[PIDTYPE_PID].first;
124 static inline unsigned name_to_int(struct dentry *dentry)
126 const char *name = dentry->d_name.name;
127 int len = dentry->d_name.len;
130 if (len > 1 && *name == '0')
133 unsigned c = *name++ - '0';
146 struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
147 struct dentry *dentry);
148 int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
154 int (*release)(struct inode *, struct file *);
157 void pde_users_dec(struct proc_dir_entry *pde);
159 extern spinlock_t proc_subdir_lock;
161 struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, unsigned int);
162 int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
163 unsigned long task_vsize(struct mm_struct *);
164 unsigned long task_statm(struct mm_struct *,
165 unsigned long *, unsigned long *, unsigned long *, unsigned long *);
166 void task_mem(struct seq_file *, struct mm_struct *);
168 static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
170 atomic_inc(&pde->count);
173 void pde_put(struct proc_dir_entry *pde);
175 int proc_fill_super(struct super_block *);
176 struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);
177 int proc_remount(struct super_block *sb, int *flags, char *data);
180 * These are generic /proc routines that use the internal
181 * "struct proc_dir_entry" tree to traverse the filesystem.
183 * The /proc root directory has extended versions to take care
184 * of the /proc/<pid> subdirectories.
186 int proc_readdir(struct file *, void *, filldir_t);
187 struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);
192 typedef struct dentry *instantiate_t(struct inode *, struct dentry *,
193 struct task_struct *, const void *);
194 int proc_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
195 const char *name, int len,
196 instantiate_t instantiate, struct task_struct *task, const void *ptr);
197 int pid_revalidate(struct dentry *dentry, unsigned int flags);
198 struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *task);
199 extern const struct dentry_operations pid_dentry_operations;
200 int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
201 int proc_setattr(struct dentry *dentry, struct iattr *attr);
203 extern const struct inode_operations proc_ns_dir_inode_operations;
204 extern const struct file_operations proc_ns_dir_operations;