2005-04-16 22:20:36 +00:00
|
|
|
/* 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/proc_fs.h>
|
|
|
|
|
|
2008-04-29 08:01:44 +00:00
|
|
|
extern struct proc_dir_entry proc_root;
|
2007-04-02 06:49:35 +00:00
|
|
|
#ifdef CONFIG_PROC_SYSCTL
|
2007-02-14 08:34:12 +00:00
|
|
|
extern int proc_sys_init(void);
|
2007-04-02 06:49:35 +00:00
|
|
|
#else
|
|
|
|
|
static inline void proc_sys_init(void) { }
|
|
|
|
|
#endif
|
2007-09-12 10:01:34 +00:00
|
|
|
#ifdef CONFIG_NET
|
|
|
|
|
extern int proc_net_init(void);
|
|
|
|
|
#else
|
|
|
|
|
static inline int proc_net_init(void) { return 0; }
|
|
|
|
|
#endif
|
2007-02-14 08:34:12 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
struct vmalloc_info {
|
|
|
|
|
unsigned long used;
|
|
|
|
|
unsigned long largest_chunk;
|
|
|
|
|
};
|
|
|
|
|
|
2008-01-02 14:09:57 +00:00
|
|
|
extern struct mm_struct *mm_for_maps(struct task_struct *);
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
#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
|
|
|
|
|
|
2008-02-08 12:18:31 +00:00
|
|
|
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);
|
2008-02-08 12:18:33 +00:00
|
|
|
extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
|
|
|
|
|
struct pid *pid, struct task_struct *task);
|
2008-02-08 12:18:32 +00:00
|
|
|
extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
|
|
|
|
|
struct pid *pid, struct task_struct *task);
|
2008-02-05 06:29:04 +00:00
|
|
|
extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-12 08:55:34 +00:00
|
|
|
extern const struct file_operations proc_maps_operations;
|
|
|
|
|
extern const struct file_operations proc_numa_maps_operations;
|
|
|
|
|
extern const struct file_operations proc_smaps_operations;
|
2008-02-05 06:29:03 +00:00
|
|
|
extern const struct file_operations proc_clear_refs_operations;
|
2008-02-05 06:29:04 +00:00
|
|
|
extern const struct file_operations proc_pagemap_operations;
|
[NET]: Make /proc/net a symlink on /proc/self/net (v3)
Current /proc/net is done with so called "shadows", but current
implementation is broken and has little chances to get fixed.
The problem is that dentries subtree of /proc/net directory has
fancy revalidation rules to make processes living in different
net namespaces see different entries in /proc/net subtree, but
currently, tasks see in the /proc/net subdir the contents of any
other namespace, depending on who opened the file first.
The proposed fix is to turn /proc/net into a symlink, which points
to /proc/self/net, which in turn shows what previously was in
/proc/net - the network-related info, from the net namespace the
appropriate task lives in.
# ls -l /proc/net
lrwxrwxrwx 1 root root 8 Mar 5 15:17 /proc/net -> self/net
In other words - this behaves like /proc/mounts, but unlike
"mounts", "net" is not a file, but a directory.
Changes from v2:
* Fixed discrepancy of /proc/net nlink count and selinux labeling
screwup pointed out by Stephen.
To get the correct nlink count the ->getattr callback for /proc/net
is overridden to read one from the net->proc_net entry.
To make selinux still work the net->proc_net entry is initialized
properly, i.e. with the "net" name and the proc_net parent.
Selinux fixes are
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Changes from v1:
* Fixed a task_struct leak in get_proc_task_net, pointed out by Paul.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 19:08:40 +00:00
|
|
|
extern const struct file_operations proc_net_operations;
|
|
|
|
|
extern const struct inode_operations proc_net_inode_operations;
|
2006-06-26 07:25:55 +00:00
|
|
|
|
2006-01-08 09:04:16 +00:00
|
|
|
void free_proc_entry(struct proc_dir_entry *de);
|
|
|
|
|
|
2008-10-16 23:43:55 +00:00
|
|
|
void proc_init_inodecache(void);
|
2006-01-08 09:04:16 +00:00
|
|
|
|
2006-06-26 07:25:56 +00:00
|
|
|
static inline struct pid *proc_pid(struct inode *inode)
|
2006-06-26 07:25:55 +00:00
|
|
|
{
|
2006-06-26 07:25:56 +00:00
|
|
|
return PROC_I(inode)->pid;
|
2006-06-26 07:25:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline struct task_struct *get_proc_task(struct inode *inode)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-06-26 07:25:56 +00:00
|
|
|
return get_pid_task(proc_pid(inode), PIDTYPE_PID);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
2006-06-26 07:25:44 +00:00
|
|
|
static inline int proc_fd(struct inode *inode)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-06-26 07:25:44 +00:00
|
|
|
return PROC_I(inode)->fd;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
[NET]: Make /proc/net a symlink on /proc/self/net (v3)
Current /proc/net is done with so called "shadows", but current
implementation is broken and has little chances to get fixed.
The problem is that dentries subtree of /proc/net directory has
fancy revalidation rules to make processes living in different
net namespaces see different entries in /proc/net subtree, but
currently, tasks see in the /proc/net subdir the contents of any
other namespace, depending on who opened the file first.
The proposed fix is to turn /proc/net into a symlink, which points
to /proc/self/net, which in turn shows what previously was in
/proc/net - the network-related info, from the net namespace the
appropriate task lives in.
# ls -l /proc/net
lrwxrwxrwx 1 root root 8 Mar 5 15:17 /proc/net -> self/net
In other words - this behaves like /proc/mounts, but unlike
"mounts", "net" is not a file, but a directory.
Changes from v2:
* Fixed discrepancy of /proc/net nlink count and selinux labeling
screwup pointed out by Stephen.
To get the correct nlink count the ->getattr callback for /proc/net
is overridden to read one from the net->proc_net entry.
To make selinux still work the net->proc_net entry is initialized
properly, i.e. with the "net" name and the proc_net parent.
Selinux fixes are
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Changes from v1:
* Fixed a task_struct leak in get_proc_task_net, pointed out by Paul.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-07 19:08:40 +00:00
|
|
|
|
|
|
|
|
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);
|
2008-07-25 08:48:29 +00:00
|
|
|
|
|
|
|
|
struct pde_opener {
|
|
|
|
|
struct inode *inode;
|
|
|
|
|
struct file *file;
|
|
|
|
|
int (*release)(struct inode *, struct file *);
|
|
|
|
|
struct list_head lh;
|
|
|
|
|
};
|
2009-02-20 14:04:33 +00:00
|
|
|
void pde_users_dec(struct proc_dir_entry *pde);
|
