proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h
Move non-public declarations and definitions from linux/proc_fs.h to
fs/proc/internal.h.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 86a2406..04255b6 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -1,4 +1,4 @@
-/* internal.h: internal procfs definitions
+/* Internal procfs definitions
*
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
@@ -9,81 +9,66 @@
* 2 of the License, or (at your option) any later version.
*/
-#include <linux/sched.h>
#include <linux/proc_fs.h>
+#include <linux/proc_ns.h>
+#include <linux/spinlock.h>
+#include <linux/atomic.h>
#include <linux/binfmts.h>
-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 ctl_table_header;
+struct mempolicy;
-struct vmalloc_info {
- unsigned long used;
- unsigned long largest_chunk;
+/*
+ * This is not completely implemented yet. The idea is to
+ * create an in-memory tree (like the actual /proc filesystem
+ * tree) of these proc_dir_entries, so that we can dynamically
+ * add new files to /proc.
+ *
+ * The "next" pointer creates a linked list of one /proc directory,
+ * while parent/subdir create the directory structure (every
+ * /proc file has a parent, but "subdir" is NULL for all
+ * non-directory entries).
+ */
+struct proc_dir_entry {
+ unsigned int low_ino;
+ umode_t mode;
+ nlink_t nlink;
+ kuid_t uid;
+ kgid_t gid;
+ loff_t size;
+ const struct inode_operations *proc_iops;
+ const struct file_operations *proc_fops;
+ struct proc_dir_entry *next, *parent, *subdir;
+ void *data;
+ atomic_t count; /* use count */
+ atomic_t in_use; /* number of callers into module in progress; */
+ /* negative -> it's going away RSN */
+ struct completion *pde_unload_completion;
+ struct list_head pde_openers; /* who did ->open, but not ->release */
+ spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */
+ u8 namelen;
+ char name[];
};
-#ifdef CONFIG_MMU
-#define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
-extern void get_vmalloc_info(struct vmalloc_info *vmi);
-#else
+union proc_op {
+ int (*proc_get_link)(struct dentry *, 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);
+};
-#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 proc_inode {
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
+ int fd;
+ union proc_op op;
+ struct proc_dir_entry *pde;
+ struct ctl_table_header *sysctl;
+ struct ctl_table *sysctl_entry;
+ struct proc_ns ns;
+ struct inode vfs_inode;
};
-void proc_init_inodecache(void);
-
/*
* General functions
*/
@@ -150,15 +135,67 @@
}
/*
+ * Offset of the first process in the /proc root directory..
+ */
+#define FIRST_PROCESS_ENTRY 256
+
+/* Worst case buffer size needed for holding an integer. */
+#define PROC_NUMBUF 13
+
+/*
+ * array.c
+ */
+extern const struct file_operations proc_tid_children_operations;
+
+extern int proc_tid_stat(struct seq_file *, struct pid_namespace *,
+ struct pid *, struct task_struct *);
+extern int proc_tgid_stat(struct seq_file *, struct pid_namespace *,
+ struct pid *, struct task_struct *);
+extern int proc_pid_status(struct seq_file *, struct pid_namespace *,
+ struct pid *, struct task_struct *);
+extern int proc_pid_statm(struct seq_file *, struct pid_namespace *,
+ struct pid *, struct task_struct *);
+
+/*
* base.c
*/
+extern const struct dentry_operations pid_dentry_operations;
+extern int pid_getattr(struct vfsmount *, struct dentry *, struct kstat *);
+extern int proc_setattr(struct dentry *, struct iattr *);
+extern struct inode *proc_pid_make_inode(struct super_block *, struct task_struct *);
+extern int pid_revalidate(struct dentry *, unsigned int);
extern int pid_delete_dentry(const struct dentry *);
+extern int proc_pid_readdir(struct file *, void *, filldir_t);
+extern struct dentry *proc_pid_lookup(struct inode *, struct dentry *, unsigned int);
+extern loff_t mem_lseek(struct file *, loff_t, int);
-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);
+/* Lookups */
+typedef struct dentry *instantiate_t(struct inode *, struct dentry *,
+ struct task_struct *, const void *);
+extern int proc_fill_cache(struct file *, void *, filldir_t, const char *, int,
+ instantiate_t, struct task_struct *, const void *);
+/*
+ * generic.c
+ */
+extern spinlock_t proc_subdir_lock;
+
+extern struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);
+extern struct dentry *proc_lookup_de(struct proc_dir_entry *, struct inode *,
+ struct dentry *);
+extern int proc_readdir(struct file *, void *, filldir_t);
+extern int proc_readdir_de(struct proc_dir_entry *, struct file *, void *, filldir_t);
+
+static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
+{
+ atomic_inc(&pde->count);
+ return pde;
+}
+extern void pde_put(struct proc_dir_entry *);
+
+/*
+ * inode.c
+ */
struct pde_opener {
struct file *file;
struct list_head lh;
@@ -166,63 +203,74 @@
struct completion *c;
};
-void proc_entry_rundown(struct proc_dir_entry *);
+extern const struct inode_operations proc_pid_link_inode_operations;
-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);
+extern void proc_init_inodecache(void);
+extern struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);
+extern int proc_fill_super(struct super_block *);
+extern void proc_entry_rundown(struct proc_dir_entry *);
/*
- * 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.
+ * mmu.c
*/
-int proc_readdir(struct file *, void *, filldir_t);
-struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);
+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 *);
-
-/* 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 *);
+#else
+#define VMALLOC_TOTAL 0UL
+static inline void get_vmalloc_info(struct vmalloc_info *vmi)
+{
+ vmi->used = 0;
+ vmi->largest_chunk = 0;
+}
+#endif
/*
* proc_devtree.c
*/
#ifdef CONFIG_PROC_DEVICETREE
extern void proc_device_tree_init(void);
-#endif /* CONFIG_PROC_DEVICETREE */
+#endif
+
+/*
+ * proc_namespaces.c
+ */
+extern const struct inode_operations proc_ns_dir_inode_operations;
+extern const struct file_operations proc_ns_dir_operations;
+
+/*
+ * proc_net.c
+ */
+extern const struct file_operations proc_net_operations;
+extern const struct inode_operations proc_net_inode_operations;
+
+#ifdef CONFIG_NET
+extern int proc_net_init(void);
+#else
+static inline int proc_net_init(void) { return 0; }
+#endif
+
+/*
+ * proc_self.c
+ */
+extern int proc_setup_self(struct super_block *);
+
+/*
+ * proc_sysctl.c
+ */
+#ifdef CONFIG_PROC_SYSCTL
+extern int proc_sys_init(void);
+extern void sysctl_head_put(struct ctl_table_header *);
+#else
+static inline void proc_sys_init(void) { }
+static inline void sysctl_head_put(struct ctl_table_header *head) { }
+#endif
/*
* proc_tty.c
@@ -232,3 +280,40 @@
#else
static inline void proc_tty_init(void) {}
#endif
+
+/*
+ * root.c
+ */
+extern struct proc_dir_entry proc_root;
+
+extern void proc_self_init(void);
+extern int proc_remount(struct super_block *, int *, char *);
+
+/*
+ * task_[no]mmu.c
+ */
+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
+};
+
+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 unsigned long task_vsize(struct mm_struct *);
+extern unsigned long task_statm(struct mm_struct *,
+ unsigned long *, unsigned long *,
+ unsigned long *, unsigned long *);
+extern void task_mem(struct seq_file *, struct mm_struct *);