X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Fproc_fs.h;h=b8bdb96eff78b8112ddf4717b651c4ef1126ead7;hb=76a67ec6fb79ff3570dcb5342142c16098299911;hp=4b47a0253425f9be28430757b1275d72a1245dae;hpb=80e8ff634169be3fc2ac48f258cc7638e898cd46;p=safe%2Fjmp%2Flinux-2.6 diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 4b47a02..b8bdb96 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -1,12 +1,16 @@ #ifndef _LINUX_PROC_FS_H #define _LINUX_PROC_FS_H -#include #include #include #include +#include #include +struct net; +struct completion; +struct mm_struct; + /* * The proc filesystem constants/structures */ @@ -16,6 +20,8 @@ */ #define FIRST_PROCESS_ENTRY 256 +/* Worst case buffer size needed for holding an integer. */ +#define PROC_NUMBUF 13 /* * We always define these enumerators @@ -25,8 +31,6 @@ enum { 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 @@ -38,7 +42,7 @@ enum { * /proc file has a parent, but "subdir" is NULL for all * non-directory entries). * - * "get_info" is called at "read", while "owner" is used to protect module + * "owner" is used to protect module * from unloading while proc_dir_entry is in use */ @@ -46,7 +50,6 @@ typedef int (read_proc_t)(char *page, char **start, off_t off, int count, int *eof, void *data); typedef int (write_proc_t)(struct file *file, const char __user *buffer, unsigned long count, void *data); -typedef int (get_info_t)(char *, char **, off_t, int); struct proc_dir_entry { unsigned int low_ino; @@ -57,17 +60,26 @@ struct proc_dir_entry { uid_t uid; gid_t gid; loff_t size; - struct inode_operations * proc_iops; - const struct file_operations * proc_fops; - get_info_t *get_info; + 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; struct module *owner; struct proc_dir_entry *next, *parent, *subdir; void *data; 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 list_head pde_openers; /* who did ->open, but not ->release */ }; struct kcore_list { @@ -85,39 +97,34 @@ struct vmcore { #ifdef CONFIG_PROC_FS -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; - extern spinlock_t proc_subdir_lock; extern void proc_root_init(void); -extern void proc_misc_init(void); - -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_data(const char *name, mode_t mode, + struct proc_dir_entry *parent, + const struct file_operations *proc_fops, + void *data); 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. @@ -128,9 +135,8 @@ extern int proc_match(int, const char *,struct proc_dir_entry *); extern int proc_readdir(struct file *, void *, filldir_t); extern struct dentry *proc_lookup(struct inode *, struct dentry *, struct nameidata *); -extern const struct file_operations proc_kcore_operations; -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 @@ -162,6 +168,12 @@ extern struct proc_dir_entry *proc_mkdir(const char *,struct proc_dir_entry *); extern struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode, struct proc_dir_entry *parent); +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 proc_create_data(name, mode, parent, proc_fops, NULL); +} + static inline struct proc_dir_entry *create_proc_read_entry(const char *name, mode_t mode, struct proc_dir_entry *base, read_proc_t *read_proc, void * data) @@ -174,50 +186,41 @@ static inline struct proc_dir_entry *create_proc_read_entry(const char *name, return res; } -static inline struct proc_dir_entry *create_proc_info_entry(const char *name, - mode_t mode, struct proc_dir_entry *base, get_info_t *get_info) -{ - struct proc_dir_entry *res=create_proc_entry(name,mode,base); - 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); + +/* While the {get|set|dup}_mm_exe_file functions are for mm_structs, they are + * only needed to implement /proc/|self/exe so we define them here. */ +extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file); +extern struct file *get_mm_exe_file(struct mm_struct *mm); +extern void dup_mm_exe_file(struct mm_struct *oldmm, struct mm_struct *newmm); #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; +} +static inline struct proc_dir_entry *proc_create_data(const char *name, + mode_t mode, struct proc_dir_entry *parent, + const struct file_operations *proc_fops, void *data) +{ + return NULL; +} #define remove_proc_entry(name, parent) do {} while (0) static inline struct proc_dir_entry *proc_symlink(const char *name, @@ -228,15 +231,32 @@ static inline struct proc_dir_entry *proc_mkdir(const char *name, static inline struct proc_dir_entry *create_proc_read_entry(const char *name, mode_t mode, struct proc_dir_entry *base, read_proc_t *read_proc, void * data) { return NULL; } -static inline struct proc_dir_entry *create_proc_info_entry(const char *name, - mode_t mode, struct proc_dir_entry *base, get_info_t *get_info) - { return NULL; } struct tty_driver; static inline void proc_tty_register_driver(struct tty_driver *driver) {}; static inline void proc_tty_unregister_driver(struct tty_driver *driver) {}; -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) +{ +} + +static inline void set_mm_exe_file(struct mm_struct *mm, + struct file *new_exe_file) +{} + +static inline struct file *get_mm_exe_file(struct mm_struct *mm) +{ + return NULL; +} + +static inline void dup_mm_exe_file(struct mm_struct *oldmm, + struct mm_struct *newmm) +{} #endif /* CONFIG_PROC_FS */ @@ -248,14 +268,24 @@ static inline void kclist_add(struct kcore_list *new, void *addr, size_t size) 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 ctl_table_header; +struct ctl_table; + 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 ctl_table_header *sysctl; + struct ctl_table *sysctl_entry; struct inode vfs_inode; }; @@ -269,4 +299,17 @@ static inline struct proc_dir_entry *PDE(const struct inode *inode) return PROC_I(inode)->pde; } +static inline struct net *PDE_NET(struct proc_dir_entry *pde) +{ + return pde->parent->data; +} + +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 */