修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/include/linux/proc_fs.h
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@@ -5,6 +5,7 @@
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 #ifndef _LINUX_PROC_FS_H
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 #define _LINUX_PROC_FS_H
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+#include <linux/compiler.h>
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 #include <linux/types.h>
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 #include <linux/fs.h>
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@@ -12,12 +13,70 @@
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 struct seq_file;
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 struct seq_operations;
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+enum {
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+	/*
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+	 * All /proc entries using this ->proc_ops instance are never removed.
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+	 *
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+	 * If in doubt, ignore this flag.
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+	 */
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+#ifdef MODULE
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+	PROC_ENTRY_PERMANENT = 0U,
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+#else
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+	PROC_ENTRY_PERMANENT = 1U << 0,
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+#endif
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+};
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+
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+struct proc_ops {
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+	unsigned int proc_flags;
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+	int	(*proc_open)(struct inode *, struct file *);
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+	ssize_t	(*proc_read)(struct file *, char __user *, size_t, loff_t *);
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+	ssize_t (*proc_read_iter)(struct kiocb *, struct iov_iter *);
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+	ssize_t	(*proc_write)(struct file *, const char __user *, size_t, loff_t *);
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+	loff_t	(*proc_lseek)(struct file *, loff_t, int);
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+	int	(*proc_release)(struct inode *, struct file *);
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+	__poll_t (*proc_poll)(struct file *, struct poll_table_struct *);
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+	long	(*proc_ioctl)(struct file *, unsigned int, unsigned long);
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+#ifdef CONFIG_COMPAT
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+	long	(*proc_compat_ioctl)(struct file *, unsigned int, unsigned long);
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+#endif
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+	int	(*proc_mmap)(struct file *, struct vm_area_struct *);
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+	unsigned long (*proc_get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
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+} __randomize_layout;
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+
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+/* definitions for hide_pid field */
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+enum proc_hidepid {
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+	HIDEPID_OFF	  = 0,
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+	HIDEPID_NO_ACCESS = 1,
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+	HIDEPID_INVISIBLE = 2,
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+	HIDEPID_NOT_PTRACEABLE = 4, /* Limit pids to only ptraceable pids */
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+};
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+
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+/* definitions for proc mount option pidonly */
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+enum proc_pidonly {
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+	PROC_PIDONLY_OFF = 0,
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+	PROC_PIDONLY_ON  = 1,
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+};
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+
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+struct proc_fs_info {
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+	struct pid_namespace *pid_ns;
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+	struct dentry *proc_self;        /* For /proc/self */
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+	struct dentry *proc_thread_self; /* For /proc/thread-self */
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+	kgid_t pid_gid;
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+	enum proc_hidepid hide_pid;
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+	enum proc_pidonly pidonly;
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+};
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+
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+static inline struct proc_fs_info *proc_sb_info(struct super_block *sb)
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+{
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+	return sb->s_fs_info;
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+}
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+
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 #ifdef CONFIG_PROC_FS
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 typedef int (*proc_write_t)(struct file *, char *, size_t);
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 extern void proc_root_init(void);
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-extern void proc_flush_task(struct task_struct *);
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+extern void proc_flush_pid(struct pid *);
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 extern struct proc_dir_entry *proc_symlink(const char *,
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 		struct proc_dir_entry *, const char *);
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@@ -44,10 +103,10 @@
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 extern struct proc_dir_entry *proc_create_data(const char *, umode_t,
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 					       struct proc_dir_entry *,
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-					       const struct file_operations *,
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+					       const struct proc_ops *,
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 					       void *);
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-struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct file_operations *proc_fops);
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+struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
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 extern void proc_set_size(struct proc_dir_entry *, loff_t);
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 extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);
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 extern void *PDE_DATA(const struct inode *);
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@@ -59,8 +118,8 @@
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 struct proc_dir_entry *proc_create_net_data(const char *name, umode_t mode,
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 		struct proc_dir_entry *parent, const struct seq_operations *ops,
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 		unsigned int state_size, void *data);
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-#define proc_create_net(name, mode, parent, state_size, ops) \
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-	proc_create_net_data(name, mode, parent, state_size, ops, NULL)
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+#define proc_create_net(name, mode, parent, ops, state_size) \
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+	proc_create_net_data(name, mode, parent, ops, state_size, NULL)
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 struct proc_dir_entry *proc_create_net_single(const char *name, umode_t mode,
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 		struct proc_dir_entry *parent,
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 		int (*show)(struct seq_file *, void *), void *data);
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@@ -76,13 +135,26 @@
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 						    void *data);
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 extern struct pid *tgid_pidfd_to_pid(const struct file *file);
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+struct bpf_iter_aux_info;
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+extern int bpf_iter_init_seq_net(void *priv_data, struct bpf_iter_aux_info *aux);
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+extern void bpf_iter_fini_seq_net(void *priv_data);
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+
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+#ifdef CONFIG_PROC_PID_ARCH_STATUS
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+/*
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+ * The architecture which selects CONFIG_PROC_PID_ARCH_STATUS must
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+ * provide proc_pid_arch_status() definition.
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+ */
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+int proc_pid_arch_status(struct seq_file *m, struct pid_namespace *ns,
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+			struct pid *pid, struct task_struct *task);
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+#endif /* CONFIG_PROC_PID_ARCH_STATUS */
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+
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 #else /* CONFIG_PROC_FS */
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 static inline void proc_root_init(void)
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 {
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 }
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-static inline void proc_flush_task(struct task_struct *task)
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+static inline void proc_flush_pid(struct pid *pid)
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 {
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 }
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@@ -105,8 +177,8 @@
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 #define proc_create_seq(name, mode, parent, ops) ({NULL;})
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 #define proc_create_single(name, mode, parent, show) ({NULL;})
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 #define proc_create_single_data(name, mode, parent, show, data) ({NULL;})
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-#define proc_create(name, mode, parent, proc_fops) ({NULL;})
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-#define proc_create_data(name, mode, parent, proc_fops, data) ({NULL;})
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+#define proc_create(name, mode, parent, proc_ops) ({NULL;})
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+#define proc_create_data(name, mode, parent, proc_ops, data) ({NULL;})
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 static inline void proc_set_size(struct proc_dir_entry *de, loff_t size) {}
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 static inline void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid) {}
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@@ -118,8 +190,10 @@
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 static inline int remove_proc_subtree(const char *name, struct proc_dir_entry *parent) { return 0; }
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 #define proc_create_net_data(name, mode, parent, ops, state_size, data) ({NULL;})
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+#define proc_create_net_data_write(name, mode, parent, ops, write, state_size, data) ({NULL;})
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 #define proc_create_net(name, mode, parent, state_size, ops) ({NULL;})
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 #define proc_create_net_single(name, mode, parent, show, data) ({NULL;})
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+#define proc_create_net_single_write(name, mode, parent, show, write, data) ({NULL;})
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 static inline struct pid *tgid_pidfd_to_pid(const struct file *file)
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 {
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@@ -127,12 +201,6 @@
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 }
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 #endif /* CONFIG_PROC_FS */
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-
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-#ifdef CONFIG_PROC_UID
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-extern void proc_register_uid(kuid_t uid);
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-#else
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-static inline void proc_register_uid(kuid_t uid) {}
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-#endif
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 struct net;
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@@ -147,9 +215,11 @@
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 		   struct ns_common *(*get_ns)(struct ns_common *ns));
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 /* get the associated pid namespace for a file in procfs */
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-static inline struct pid_namespace *proc_pid_ns(const struct inode *inode)
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+static inline struct pid_namespace *proc_pid_ns(struct super_block *sb)
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 {
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-	return inode->i_sb->s_fs_info;
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+	return proc_sb_info(sb)->pid_ns;
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 }
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+bool proc_ns_file(const struct file *file);
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+
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 #endif /* _LINUX_PROC_FS_H */