#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/spinlock.h>
+#include <linux/magic.h>
#include <asm/atomic.h>
+struct net;
+struct completion;
+
/*
* The proc filesystem constants/structures
*/
*/
#define FIRST_PROCESS_ENTRY 256
+/* Worst case buffer size needed for holding an integer. */
+#define PROC_NUMBUF 13
/*
* We always define these enumerators
PROC_ROOT_INO = 1,
};
-#define PROC_SUPER_MAGIC 0x9fa0
-
/*
* This is not completely implemented yet. The idea is to
* create an in-memory tree (like the actual /proc filesystem
uid_t uid;
gid_t gid;
loff_t size;
- struct inode_operations * proc_iops;
- const struct file_operations * proc_fops;
+ const struct inode_operations *proc_iops;
+ /*
+ * NULL ->proc_fops means "PDE is going away RSN" or
+ * "PDE is just created". In either case, e.g. ->read_proc won't be
+ * called because it's too late or too early, respectively.
+ *
+ * If you're allocating ->proc_fops dynamically, save a pointer
+ * somewhere.
+ */
+ const struct file_operations *proc_fops;
get_info_t *get_info;
struct module *owner;
struct proc_dir_entry *next, *parent, *subdir;
read_proc_t *read_proc;
write_proc_t *write_proc;
atomic_t count; /* use count */
- int deleted; /* delete flag */
- void *set;
+ int pde_users; /* number of callers into module in progress */
+ spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */
+ struct completion *pde_unload_completion;
};
struct kcore_list {
extern struct proc_dir_entry proc_root;
extern struct proc_dir_entry *proc_root_fs;
-extern struct proc_dir_entry *proc_net;
-extern struct proc_dir_entry *proc_net_stat;
extern struct proc_dir_entry *proc_bus;
extern struct proc_dir_entry *proc_root_driver;
extern struct proc_dir_entry *proc_root_kcore;
struct mm_struct;
+void proc_flush_task(struct task_struct *task);
struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *);
-struct dentry *proc_pid_unhash(struct task_struct *p);
-void proc_pid_flush(struct dentry *proc_dentry);
int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
unsigned long task_vsize(struct mm_struct *);
int task_statm(struct mm_struct *, int *, int *, int *, int *);
-char *task_mem(struct mm_struct *, char *);
+void task_mem(struct seq_file *, struct mm_struct *);
+void clear_refs_smap(struct mm_struct *mm);
+
+struct proc_dir_entry *de_get(struct proc_dir_entry *de);
+void de_put(struct proc_dir_entry *de);
extern struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
struct proc_dir_entry *parent);
+struct proc_dir_entry *proc_create(const char *name, mode_t mode,
+ struct proc_dir_entry *parent,
+ const struct file_operations *proc_fops);
extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent);
extern struct vfsmount *proc_mnt;
-extern int proc_fill_super(struct super_block *,void *,int);
+struct pid_namespace;
+extern int proc_fill_super(struct super_block *);
extern struct inode *proc_get_inode(struct super_block *, unsigned int, struct proc_dir_entry *);
-extern int proc_match(int, const char *,struct proc_dir_entry *);
-
/*
* These are generic /proc routines that use the internal
* "struct proc_dir_entry" tree to traverse the filesystem.
extern const struct file_operations proc_kmsg_operations;
extern const struct file_operations ppc_htab_operations;
+extern int pid_ns_prepare_proc(struct pid_namespace *ns);
+extern void pid_ns_release_proc(struct pid_namespace *ns);
+
/*
* proc_tty.c
*/
if (res) res->get_info=get_info;
return res;
}
-
-static inline struct proc_dir_entry *proc_net_create(const char *name,
- mode_t mode, get_info_t *get_info)
-{
- return create_proc_info_entry(name,mode,proc_net,get_info);
-}
-
-static inline struct proc_dir_entry *proc_net_fops_create(const char *name,
- mode_t mode, const struct file_operations *fops)
-{
- struct proc_dir_entry *res = create_proc_entry(name, mode, proc_net);
- if (res)
- res->proc_fops = fops;
- return res;
-}
-static inline void proc_net_remove(const char *name)
-{
- remove_proc_entry(name,proc_net);
-}
+extern struct proc_dir_entry *proc_net_fops_create(struct net *net,
+ const char *name, mode_t mode, const struct file_operations *fops);
+extern void proc_net_remove(struct net *net, const char *name);
+extern struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name,
+ struct proc_dir_entry *parent);
#else
#define proc_root_driver NULL
-#define proc_net NULL
#define proc_bus NULL
-#define proc_net_fops_create(name, mode, fops) ({ (void)(mode), NULL; })
-#define proc_net_create(name, mode, info) ({ (void)(mode), NULL; })
-static inline void proc_net_remove(const char *name) {}
+#define proc_net_fops_create(net, name, mode, fops) ({ (void)(mode), NULL; })
+static inline void proc_net_remove(struct net *net, const char *name) {}
-static inline struct dentry *proc_pid_unhash(struct task_struct *p) { return NULL; }
-static inline void proc_pid_flush(struct dentry *proc_dentry) { }
+static inline void proc_flush_task(struct task_struct *task)
+{
+}
static inline struct proc_dir_entry *create_proc_entry(const char *name,
mode_t mode, struct proc_dir_entry *parent) { return NULL; }
-
+static inline struct proc_dir_entry *proc_create(const char *name,
+ mode_t mode, struct proc_dir_entry *parent,
+ const struct file_operations *proc_fops)
+{
+ return NULL;
+}
#define remove_proc_entry(name, parent) do {} while (0)
static inline struct proc_dir_entry *proc_symlink(const char *name,
extern struct proc_dir_entry proc_root;
+static inline int pid_ns_prepare_proc(struct pid_namespace *ns)
+{
+ return 0;
+}
+
+static inline void pid_ns_release_proc(struct pid_namespace *ns)
+{
+}
+
#endif /* CONFIG_PROC_FS */
#if !defined(CONFIG_PROC_KCORE)
extern void kclist_add(struct kcore_list *, void *, size_t);
#endif
+union proc_op {
+ int (*proc_get_link)(struct inode *, struct path *);
+ int (*proc_read)(struct task_struct *task, char *page);
+ int (*proc_show)(struct seq_file *m,
+ struct pid_namespace *ns, struct pid *pid,
+ struct task_struct *task);
+};
+
struct proc_inode {
- struct task_struct *task;
- int type;
- union {
- int (*proc_get_link)(struct inode *, struct dentry **, struct vfsmount **);
- int (*proc_read)(struct task_struct *task, char *page);
- } op;
+ struct pid *pid;
+ int fd;
+ union proc_op op;
struct proc_dir_entry *pde;
struct inode vfs_inode;
};
return PROC_I(inode)->pde;
}
+static inline struct net *PDE_NET(struct proc_dir_entry *pde)
+{
+ return pde->parent->data;
+}
+
+struct net *get_proc_net(const struct inode *inode);
+
+struct proc_maps_private {
+ struct pid *pid;
+ struct task_struct *task;
+#ifdef CONFIG_MMU
+ struct vm_area_struct *tail_vma;
+#endif
+};
+
#endif /* _LINUX_PROC_FS_H */
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