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3df15d6f37
The console variable is used everywhere in some fun pointer path and array indexes and for some reason isn't always declared as unsigned. This plays havoc with some static analysis tools so mark the variable as unsigned so we "know" we can not wrap the arrays backwards here. Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reported-by: Jordy Zomer <jordy@pwning.systems> Link: https://lore.kernel.org/r/20210726134322.2274919-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
175 lines
5.3 KiB
C
175 lines
5.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _VT_KERN_H
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#define _VT_KERN_H
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/*
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* this really is an extension of the vc_cons structure in console.c, but
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* with information needed by the vt package
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*/
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#include <linux/vt.h>
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#include <linux/kd.h>
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#include <linux/tty.h>
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#include <linux/mutex.h>
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#include <linux/console_struct.h>
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#include <linux/mm.h>
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#include <linux/consolemap.h>
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#include <linux/notifier.h>
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void kd_mksound(unsigned int hz, unsigned int ticks);
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int kbd_rate(struct kbd_repeat *rep);
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extern int fg_console, last_console, want_console;
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/* console.c */
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int vc_allocate(unsigned int console);
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int vc_cons_allocated(unsigned int console);
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int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines);
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struct vc_data *vc_deallocate(unsigned int console);
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void reset_palette(struct vc_data *vc);
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void do_blank_screen(int entering_gfx);
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void do_unblank_screen(int leaving_gfx);
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void unblank_screen(void);
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void poke_blanked_console(void);
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int con_font_op(struct vc_data *vc, struct console_font_op *op);
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int con_set_cmap(unsigned char __user *cmap);
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int con_get_cmap(unsigned char __user *cmap);
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void scrollback(struct vc_data *vc);
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void scrollfront(struct vc_data *vc, int lines);
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void clear_buffer_attributes(struct vc_data *vc);
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void update_region(struct vc_data *vc, unsigned long start, int count);
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void redraw_screen(struct vc_data *vc, int is_switch);
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#define update_screen(x) redraw_screen(x, 0)
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#define switch_screen(x) redraw_screen(x, 1)
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struct tty_struct;
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int tioclinux(struct tty_struct *tty, unsigned long arg);
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#ifdef CONFIG_CONSOLE_TRANSLATIONS
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/* consolemap.c */
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struct unipair;
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int con_set_trans_old(unsigned char __user * table);
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int con_get_trans_old(unsigned char __user * table);
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int con_set_trans_new(unsigned short __user * table);
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int con_get_trans_new(unsigned short __user * table);
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int con_clear_unimap(struct vc_data *vc);
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int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list);
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int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list);
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int con_set_default_unimap(struct vc_data *vc);
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void con_free_unimap(struct vc_data *vc);
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int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);
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#else
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static inline int con_set_trans_old(unsigned char __user *table)
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{
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return 0;
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}
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static inline int con_get_trans_old(unsigned char __user *table)
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{
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return -EINVAL;
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}
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static inline int con_set_trans_new(unsigned short __user *table)
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{
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return 0;
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}
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static inline int con_get_trans_new(unsigned short __user *table)
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{
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return -EINVAL;
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}
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static inline int con_clear_unimap(struct vc_data *vc)
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{
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return 0;
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}
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static inline
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int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
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{
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return 0;
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}
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static inline
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int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct,
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struct unipair __user *list)
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{
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return -EINVAL;
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}
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static inline int con_set_default_unimap(struct vc_data *vc)
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{
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return 0;
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}
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static inline void con_free_unimap(struct vc_data *vc)
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{
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}
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static inline void con_protect_unimap(struct vc_data *vc, int rdonly)
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{
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}
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static inline
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int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc)
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{
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return 0;
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}
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#endif
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/* vt.c */
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void vt_event_post(unsigned int event, unsigned int old, unsigned int new);
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int vt_waitactive(int n);
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void change_console(struct vc_data *new_vc);
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void reset_vc(struct vc_data *vc);
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int do_unbind_con_driver(const struct consw *csw, int first, int last,
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int deflt);
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int vty_init(const struct file_operations *console_fops);
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extern bool vt_dont_switch;
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extern int default_utf8;
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extern int global_cursor_default;
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struct vt_spawn_console {
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spinlock_t lock;
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struct pid *pid;
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int sig;
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};
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extern struct vt_spawn_console vt_spawn_con;
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int vt_move_to_console(unsigned int vt, int alloc);
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/* Interfaces for VC notification of character events (for accessibility etc) */
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struct vt_notifier_param {
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struct vc_data *vc; /* VC on which the update happened */
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unsigned int c; /* Printed char */
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};
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int register_vt_notifier(struct notifier_block *nb);
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int unregister_vt_notifier(struct notifier_block *nb);
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void hide_boot_cursor(bool hide);
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/* keyboard provided interfaces */
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int vt_do_diacrit(unsigned int cmd, void __user *up, int eperm);
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int vt_do_kdskbmode(unsigned int console, unsigned int arg);
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int vt_do_kdskbmeta(unsigned int console, unsigned int arg);
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int vt_do_kbkeycode_ioctl(int cmd, struct kbkeycode __user *user_kbkc,
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int perm);
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int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
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unsigned int console);
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int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm);
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int vt_do_kdskled(unsigned int console, int cmd, unsigned long arg, int perm);
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int vt_do_kdgkbmode(unsigned int console);
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int vt_do_kdgkbmeta(unsigned int console);
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void vt_reset_unicode(unsigned int console);
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int vt_get_shift_state(void);
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void vt_reset_keyboard(unsigned int console);
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int vt_get_leds(unsigned int console, int flag);
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int vt_get_kbd_mode_bit(unsigned int console, int bit);
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void vt_set_kbd_mode_bit(unsigned int console, int bit);
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void vt_clr_kbd_mode_bit(unsigned int console, int bit);
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void vt_set_led_state(unsigned int console, int leds);
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void vt_kbd_con_start(unsigned int console);
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void vt_kbd_con_stop(unsigned int console);
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void vc_scrolldelta_helper(struct vc_data *c, int lines,
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unsigned int rolled_over, void *_base, unsigned int size);
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#endif /* _VT_KERN_H */
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