From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/linux/tty.h | 111 ++++++-------------------------------------------------
1 files changed, 12 insertions(+), 99 deletions(-)
diff --git a/kernel/include/linux/tty.h b/kernel/include/linux/tty.h
index d808ab9..74909c3 100644
--- a/kernel/include/linux/tty.h
+++ b/kernel/include/linux/tty.h
@@ -14,31 +14,8 @@
#include <uapi/linux/tty.h>
#include <linux/rwsem.h>
#include <linux/llist.h>
+#include <linux/android_kabi.h>
-
-/*
- * Lock subclasses for tty locks
- *
- * TTY_LOCK_NORMAL is for normal ttys and master ptys.
- * TTY_LOCK_SLAVE is for slave ptys only.
- *
- * Lock subclasses are necessary for handling nested locking with pty pairs.
- * tty locks which use nested locking:
- *
- * legacy_mutex - Nested tty locks are necessary for releasing pty pairs.
- * The stable lock order is master pty first, then slave pty.
- * termios_rwsem - The stable lock order is tty_buffer lock->termios_rwsem.
- * Subclassing this lock enables the slave pty to hold its
- * termios_rwsem when claiming the master tty_buffer lock.
- * tty_buffer lock - slave ptys can claim nested buffer lock when handling
- * signal chars. The stable lock order is slave pty, then
- * master.
- */
-
-enum {
- TTY_LOCK_NORMAL = 0,
- TTY_LOCK_SLAVE,
-};
/*
* (Note: the *_driver.minor_start values 1, 64, 128, 192 are
@@ -218,6 +195,8 @@
int (*activate)(struct tty_port *port, struct tty_struct *tty);
/* Called on the final put of a port */
void (*destruct)(struct tty_port *port);
+
+ ANDROID_KABI_RESERVE(1);
};
struct tty_port_client_operations {
@@ -252,6 +231,8 @@
set to size of fifo */
struct kref kref; /* Ref counter */
void *client_data;
+
+ ANDROID_KABI_RESERVE(1);
};
/* tty_port::iflags bits -- use atomic bit ops */
@@ -303,7 +284,10 @@
spinlock_t flow_lock;
/* Termios values are protected by the termios rwsem */
struct ktermios termios, termios_locked;
- struct termiox *termiox; /* May be NULL for unsupported */
+
+ /* termiox is estored only for ABI preservation, do not use */
+ struct termiox *termiox;
+
char name[64];
struct pid *pgrp; /* Protected by ctrl lock */
/*
@@ -342,6 +326,9 @@
/* If the tty has a pending do_SAK, queue it here - akpm */
struct work_struct SAK_work;
struct tty_port *port;
+
+ ANDROID_KABI_RESERVE(1);
+ ANDROID_KABI_RESERVE(2);
} __randomize_layout;
/* Each of a tty's open files has private_data pointing to tty_file_private */
@@ -375,21 +362,6 @@
#define TTY_LDISC_CHANGING 20 /* Change pending - non-block IO */
#define TTY_LDISC_HALTED 22 /* Line discipline is halted */
-/* Values for tty->flow_change */
-#define TTY_THROTTLE_SAFE 1
-#define TTY_UNTHROTTLE_SAFE 2
-
-static inline void __tty_set_flow_change(struct tty_struct *tty, int val)
-{
- tty->flow_change = val;
-}
-
-static inline void tty_set_flow_change(struct tty_struct *tty, int val)
-{
- tty->flow_change = val;
- smp_mb();
-}
-
static inline bool tty_io_nonblock(struct tty_struct *tty, struct file *file)
{
return file->f_flags & O_NONBLOCK ||
@@ -420,8 +392,6 @@
extern struct tty_struct *tty_kopen(dev_t device);
extern void tty_kclose(struct tty_struct *tty);
extern int tty_dev_name_to_number(const char *name, dev_t *number);
-extern int tty_ldisc_lock(struct tty_struct *tty, unsigned long timeout);
-extern void tty_ldisc_unlock(struct tty_struct *tty);
#else
static inline void tty_kref_put(struct tty_struct *tty)
{ }
@@ -474,11 +444,7 @@
extern const char *tty_driver_name(const struct tty_struct *tty);
extern void tty_wait_until_sent(struct tty_struct *tty, long timeout);
-extern int __tty_check_change(struct tty_struct *tty, int sig);
-extern int tty_check_change(struct tty_struct *tty);
-extern void __stop_tty(struct tty_struct *tty);
extern void stop_tty(struct tty_struct *tty);
-extern void __start_tty(struct tty_struct *tty);
extern void start_tty(struct tty_struct *tty);
extern int tty_register_driver(struct tty_driver *driver);
extern int tty_unregister_driver(struct tty_driver *driver);
@@ -503,23 +469,11 @@
extern int is_current_pgrp_orphaned(void);
extern void tty_hangup(struct tty_struct *tty);
extern void tty_vhangup(struct tty_struct *tty);
-extern void tty_vhangup_session(struct tty_struct *tty);
extern int tty_hung_up_p(struct file *filp);
extern void do_SAK(struct tty_struct *tty);
extern void __do_SAK(struct tty_struct *tty);
-extern void tty_open_proc_set_tty(struct file *filp, struct tty_struct *tty);
-extern int tty_signal_session_leader(struct tty_struct *tty, int exit_session);
-extern void session_clear_tty(struct pid *session);
extern void no_tty(void);
-extern void tty_buffer_free_all(struct tty_port *port);
-extern void tty_buffer_flush(struct tty_struct *tty, struct tty_ldisc *ld);
-extern void tty_buffer_init(struct tty_port *port);
-extern void tty_buffer_set_lock_subclass(struct tty_port *port);
-extern bool tty_buffer_restart_work(struct tty_port *port);
-extern bool tty_buffer_cancel_work(struct tty_port *port);
-extern void tty_buffer_flush_work(struct tty_port *port);
extern speed_t tty_termios_baud_rate(struct ktermios *termios);
-extern speed_t tty_termios_input_baud_rate(struct ktermios *termios);
extern void tty_termios_encode_baud_rate(struct ktermios *termios,
speed_t ibaud, speed_t obaud);
extern void tty_encode_baud_rate(struct tty_struct *tty,
@@ -547,35 +501,22 @@
extern struct tty_ldisc *tty_ldisc_ref(struct tty_struct *);
extern void tty_ldisc_deref(struct tty_ldisc *);
extern struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *);
-extern void tty_ldisc_hangup(struct tty_struct *tty, bool reset);
-extern int tty_ldisc_reinit(struct tty_struct *tty, int disc);
extern const struct seq_operations tty_ldiscs_seq_ops;
extern void tty_wakeup(struct tty_struct *tty);
extern void tty_ldisc_flush(struct tty_struct *tty);
-extern long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
extern int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg);
-extern long tty_jobctrl_ioctl(struct tty_struct *tty, struct tty_struct *real_tty,
- struct file *file, unsigned int cmd, unsigned long arg);
extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg);
-extern void tty_default_fops(struct file_operations *fops);
-extern struct tty_struct *alloc_tty_struct(struct tty_driver *driver, int idx);
-extern int tty_alloc_file(struct file *file);
-extern void tty_add_file(struct tty_struct *tty, struct file *file);
-extern void tty_free_file(struct file *file);
extern struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx);
extern void tty_release_struct(struct tty_struct *tty, int idx);
-extern int tty_release(struct inode *inode, struct file *filp);
extern void tty_init_termios(struct tty_struct *tty);
extern void tty_save_termios(struct tty_struct *tty);
extern int tty_standard_install(struct tty_driver *driver,
struct tty_struct *tty);
extern struct mutex tty_mutex;
-
-#define tty_is_writelocked(tty) (mutex_is_locked(&tty->atomic_write_lock))
extern void tty_port_init(struct tty_port *port);
extern void tty_port_link_device(struct tty_port *port,
@@ -714,10 +655,6 @@
extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc);
extern int tty_unregister_ldisc(int disc);
extern int tty_set_ldisc(struct tty_struct *tty, int disc);
-extern int tty_ldisc_setup(struct tty_struct *tty, struct tty_struct *o_tty);
-extern void tty_ldisc_release(struct tty_struct *tty);
-extern int __must_check tty_ldisc_init(struct tty_struct *tty);
-extern void tty_ldisc_deinit(struct tty_struct *tty);
extern int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
char *f, int count);
@@ -731,20 +668,10 @@
/* tty_audit.c */
#ifdef CONFIG_AUDIT
-extern void tty_audit_add_data(struct tty_struct *tty, const void *data,
- size_t size);
extern void tty_audit_exit(void);
extern void tty_audit_fork(struct signal_struct *sig);
-extern void tty_audit_tiocsti(struct tty_struct *tty, char ch);
extern int tty_audit_push(void);
#else
-static inline void tty_audit_add_data(struct tty_struct *tty, const void *data,
- size_t size)
-{
-}
-static inline void tty_audit_tiocsti(struct tty_struct *tty, char ch)
-{
-}
static inline void tty_audit_exit(void)
{
}
@@ -759,8 +686,6 @@
/* tty_ioctl.c */
extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
- unsigned int cmd, unsigned long arg);
-extern long n_tty_compat_ioctl_helper(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg);
/* vt.c */
@@ -787,17 +712,5 @@
static inline void proc_tty_register_driver(struct tty_driver *d) {}
static inline void proc_tty_unregister_driver(struct tty_driver *d) {}
#endif
-
-#define tty_msg(fn, tty, f, ...) \
- fn("%s %s: " f, tty_driver_name(tty), tty_name(tty), ##__VA_ARGS__)
-
-#define tty_debug(tty, f, ...) tty_msg(pr_debug, tty, f, ##__VA_ARGS__)
-#define tty_info(tty, f, ...) tty_msg(pr_info, tty, f, ##__VA_ARGS__)
-#define tty_notice(tty, f, ...) tty_msg(pr_notice, tty, f, ##__VA_ARGS__)
-#define tty_warn(tty, f, ...) tty_msg(pr_warn, tty, f, ##__VA_ARGS__)
-#define tty_err(tty, f, ...) tty_msg(pr_err, tty, f, ##__VA_ARGS__)
-
-#define tty_info_ratelimited(tty, f, ...) \
- tty_msg(pr_info_ratelimited, tty, f, ##__VA_ARGS__)
#endif
--
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