/* internal.h: internal procfs definitions * * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include #include #include struct ctl_table_header; struct mempolicy; extern struct proc_dir_entry proc_root; extern void proc_self_init(void); #ifdef CONFIG_PROC_SYSCTL extern int proc_sys_init(void); extern void sysctl_head_put(struct ctl_table_header *head); #else static inline void proc_sys_init(void) { } static inline void sysctl_head_put(struct ctl_table_header *head) { } #endif #ifdef CONFIG_NET extern int proc_net_init(void); #else static inline int proc_net_init(void) { return 0; } #endif struct vmalloc_info { unsigned long used; unsigned long largest_chunk; }; #ifdef CONFIG_MMU #define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START) extern void get_vmalloc_info(struct vmalloc_info *vmi); #else #define VMALLOC_TOTAL 0UL #define get_vmalloc_info(vmi) \ do { \ (vmi)->used = 0; \ (vmi)->largest_chunk = 0; \ } while(0) #endif extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task); extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task); extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task); extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task); extern loff_t mem_lseek(struct file *file, loff_t offset, int orig); extern const struct file_operations proc_tid_children_operations; extern const struct file_operations proc_pid_maps_operations; extern const struct file_operations proc_tid_maps_operations; extern const struct file_operations proc_pid_numa_maps_operations; extern const struct file_operations proc_tid_numa_maps_operations; extern const struct file_operations proc_pid_smaps_operations; extern const struct file_operations proc_tid_smaps_operations; extern const struct file_operations proc_clear_refs_operations; extern const struct file_operations proc_pagemap_operations; extern const struct file_operations proc_net_operations; extern const struct inode_operations proc_net_inode_operations; extern const struct inode_operations proc_pid_link_inode_operations; struct proc_maps_private { struct pid *pid; struct task_struct *task; #ifdef CONFIG_MMU struct vm_area_struct *tail_vma; #endif #ifdef CONFIG_NUMA struct mempolicy *task_mempolicy; #endif }; void proc_init_inodecache(void); static inline struct pid *proc_pid(struct inode *inode) { return PROC_I(inode)->pid; } static inline struct task_struct *get_proc_task(struct inode *inode) { return get_pid_task(proc_pid(inode), PIDTYPE_PID); } static inline int proc_fd(struct inode *inode) { return PROC_I(inode)->fd; } static inline int task_dumpable(struct task_struct *task) { int dumpable = 0; struct mm_struct *mm; task_lock(task); mm = task->mm; if (mm) dumpable = get_dumpable(mm); task_unlock(task); if (dumpable == SUID_DUMP_USER) return 1; return 0; } static inline int pid_delete_dentry(const struct dentry * dentry) { /* Is the task we represent dead? * If so, then don't put the dentry on the lru list, * kill it immediately. */ return !proc_pid(dentry->d_inode)->tasks[PIDTYPE_PID].first; } static inline unsigned name_to_int(struct dentry *dentry) { const char *name = dentry->d_name.name; int len = dentry->d_name.len; unsigned n = 0; if (len > 1 && *name == '0') goto out; while (len-- > 0) { unsigned c = *name++ - '0'; if (c > 9) goto out; if (n >= (~0U-9)/10) goto out; n *= 10; n += c; } return n; out: return ~0U; } struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino, struct dentry *dentry); int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent, filldir_t filldir); struct pde_opener { struct inode *inode; struct file *file; int (*release)(struct inode *, struct file *); struct list_head lh; }; void pde_users_dec(struct proc_dir_entry *pde); extern spinlock_t proc_subdir_lock; struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, unsigned int); int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir); unsigned long task_vsize(struct mm_struct *); unsigned long task_statm(struct mm_struct *, unsigned long *, unsigned long *, unsigned long *, unsigned long *); void task_mem(struct seq_file *, struct mm_struct *); static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde) { atomic_inc(&pde->count); return pde; } void pde_put(struct proc_dir_entry *pde); int proc_fill_super(struct super_block *); struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *); int proc_remount(struct super_block *sb, int *flags, char *data); /* * These are generic /proc routines that use the internal * "struct proc_dir_entry" tree to traverse the filesystem. * * The /proc root directory has extended versions to take care * of the /proc/ subdirectories. */ int proc_readdir(struct file *, void *, filldir_t); struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int); /* Lookups */ typedef struct dentry *instantiate_t(struct inode *, struct dentry *, struct task_struct *, const void *); int proc_fill_cache(struct file *filp, void *dirent, filldir_t filldir, const char *name, int len, instantiate_t instantiate, struct task_struct *task, const void *ptr); int pid_revalidate(struct dentry *dentry, unsigned int flags); struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *task); extern const struct dentry_operations pid_dentry_operations; int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat); int proc_setattr(struct dentry *dentry, struct iattr *attr); extern const struct inode_operations proc_ns_dir_inode_operations; extern const struct file_operations proc_ns_dir_operations; extern int proc_setup_self(struct super_block *);