1 /* internal.h: internal procfs definitions
3 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
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 extern void proc_self_init(void);
19 #ifdef CONFIG_PROC_SYSCTL
20 extern int proc_sys_init(void);
21 extern void sysctl_head_put(struct ctl_table_header *head);
23 static inline void proc_sys_init(void) { }
24 static inline void sysctl_head_put(struct ctl_table_header *head) { }
27 extern int proc_net_init(void);
29 static inline int proc_net_init(void) { return 0; }
34 unsigned long largest_chunk;
38 #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
39 extern void get_vmalloc_info(struct vmalloc_info *vmi);
42 #define VMALLOC_TOTAL 0UL
43 #define get_vmalloc_info(vmi) \
46 (vmi)->largest_chunk = 0; \
50 extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
51 struct pid *pid, struct task_struct *task);
52 extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
53 struct pid *pid, struct task_struct *task);
54 extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
55 struct pid *pid, struct task_struct *task);
56 extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
57 struct pid *pid, struct task_struct *task);
58 extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
60 extern const struct file_operations proc_tid_children_operations;
61 extern const struct file_operations proc_pid_maps_operations;
62 extern const struct file_operations proc_tid_maps_operations;
63 extern const struct file_operations proc_pid_numa_maps_operations;
64 extern const struct file_operations proc_tid_numa_maps_operations;
65 extern const struct file_operations proc_pid_smaps_operations;
66 extern const struct file_operations proc_tid_smaps_operations;
67 extern const struct file_operations proc_clear_refs_operations;
68 extern const struct file_operations proc_pagemap_operations;
69 extern const struct file_operations proc_net_operations;
70 extern const struct inode_operations proc_net_inode_operations;
71 extern const struct inode_operations proc_pid_link_inode_operations;
73 struct proc_maps_private {
75 struct task_struct *task;
77 struct vm_area_struct *tail_vma;
80 struct mempolicy *task_mempolicy;
84 void proc_init_inodecache(void);
86 static inline struct pid *proc_pid(struct inode *inode)
88 return PROC_I(inode)->pid;
91 static inline struct task_struct *get_proc_task(struct inode *inode)
93 return get_pid_task(proc_pid(inode), PIDTYPE_PID);
96 static inline int proc_fd(struct inode *inode)
98 return PROC_I(inode)->fd;
101 static inline int task_dumpable(struct task_struct *task)
104 struct mm_struct *mm;
109 dumpable = get_dumpable(mm);
111 if (dumpable == SUID_DUMPABLE_ENABLED)
116 static inline int pid_delete_dentry(const struct dentry * dentry)
118 /* Is the task we represent dead?
119 * If so, then don't put the dentry on the lru list,
120 * kill it immediately.
122 return !proc_pid(dentry->d_inode)->tasks[PIDTYPE_PID].first;
125 static inline unsigned name_to_int(struct dentry *dentry)
127 const char *name = dentry->d_name.name;
128 int len = dentry->d_name.len;
131 if (len > 1 && *name == '0')
134 unsigned c = *name++ - '0';
147 struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,
148 struct dentry *dentry);
149 int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,
155 int (*release)(struct inode *, struct file *);
158 void pde_users_dec(struct proc_dir_entry *pde);
160 extern spinlock_t proc_subdir_lock;
162 struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, unsigned int);
163 int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
164 unsigned long task_vsize(struct mm_struct *);
165 unsigned long task_statm(struct mm_struct *,
166 unsigned long *, unsigned long *, unsigned long *, unsigned long *);
167 void task_mem(struct seq_file *, struct mm_struct *);
169 static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
171 atomic_inc(&pde->count);
174 void pde_put(struct proc_dir_entry *pde);
176 int proc_fill_super(struct super_block *);
177 struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);
178 int proc_remount(struct super_block *sb, int *flags, char *data);
181 * These are generic /proc routines that use the internal
182 * "struct proc_dir_entry" tree to traverse the filesystem.
184 * The /proc root directory has extended versions to take care
185 * of the /proc/<pid> subdirectories.
187 int proc_readdir(struct file *, void *, filldir_t);
188 struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);
193 typedef struct dentry *instantiate_t(struct inode *, struct dentry *,
194 struct task_struct *, const void *);
195 int proc_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
196 const char *name, int len,
197 instantiate_t instantiate, struct task_struct *task, const void *ptr);
198 int pid_revalidate(struct dentry *dentry, unsigned int flags);
199 struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *task);
200 extern const struct dentry_operations pid_dentry_operations;
201 int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
202 int proc_setattr(struct dentry *dentry, struct iattr *attr);
204 extern const struct inode_operations proc_ns_dir_inode_operations;
205 extern const struct file_operations proc_ns_dir_operations;