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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 | /* 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 <linux/sched.h> #include <linux/proc_fs.h> struct ctl_table_header; struct mempolicy; extern struct proc_dir_entry proc_root; #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_DUMPABLE_ENABLED) 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/<pid> 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; |