37a107a407
These changes prevent sysctl(8) from returning proper output,
such as:
1) no output from sysctl(8)
2) erroneously returning ENOMEM with tools like truss(1)
or uname(1)
truss: can not get etype: Cannot allocate memory
451 lines
15 KiB
C
451 lines
15 KiB
C
/*-
|
|
* Copyright (c) 2009, 2013 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Ed Schouten under sponsorship from the
|
|
* FreeBSD Foundation.
|
|
*
|
|
* Portions of this software were developed by Oleksandr Rybalko
|
|
* under sponsorship from the FreeBSD Foundation.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _DEV_VT_VT_H_
|
|
#define _DEV_VT_VT_H_
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/_lock.h>
|
|
#include <sys/_mutex.h>
|
|
#include <sys/callout.h>
|
|
#include <sys/condvar.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/consio.h>
|
|
#include <sys/kbio.h>
|
|
#include <sys/mouse.h>
|
|
#include <sys/terminal.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include "opt_syscons.h"
|
|
#include "opt_splash.h"
|
|
|
|
#ifndef VT_MAXWINDOWS
|
|
#ifdef MAXCONS
|
|
#define VT_MAXWINDOWS MAXCONS
|
|
#else
|
|
#define VT_MAXWINDOWS 12
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef VT_ALT_TO_ESC_HACK
|
|
#define VT_ALT_TO_ESC_HACK 1
|
|
#endif
|
|
|
|
#define VT_CONSWINDOW 0
|
|
|
|
#if defined(SC_TWOBUTTON_MOUSE) || defined(VT_TWOBUTTON_MOUSE)
|
|
#define VT_MOUSE_PASTEBUTTON MOUSE_BUTTON3DOWN /* right button */
|
|
#define VT_MOUSE_EXTENDBUTTON MOUSE_BUTTON2DOWN /* not really used */
|
|
#else
|
|
#define VT_MOUSE_PASTEBUTTON MOUSE_BUTTON2DOWN /* middle button */
|
|
#define VT_MOUSE_EXTENDBUTTON MOUSE_BUTTON3DOWN /* right button */
|
|
#endif /* defined(SC_TWOBUTTON_MOUSE) || defined(VT_TWOBUTTON_MOUSE) */
|
|
|
|
#define SC_DRIVER_NAME "vt"
|
|
#ifdef VT_DEBUG
|
|
#define DPRINTF(_l, ...) if (vt_debug > (_l)) printf( __VA_ARGS__ )
|
|
#define VT_CONSOLECTL_DEBUG
|
|
#define VT_SYSMOUSE_DEBUG
|
|
#else
|
|
#define DPRINTF(_l, ...) do {} while (0)
|
|
#endif
|
|
#define ISSIGVALID(sig) ((sig) > 0 && (sig) < NSIG)
|
|
|
|
#define VT_SYSCTL_INT(_name, _default, _descr) \
|
|
static int vt_##_name = _default; \
|
|
SYSCTL_INT(_kern_vt, OID_AUTO, _name, CTLFLAG_RW, &vt_##_name, _default,\
|
|
_descr); \
|
|
TUNABLE_INT("kern.vt." #_name, &vt_##_name);
|
|
|
|
struct vt_driver;
|
|
|
|
void vt_allocate(struct vt_driver *, void *);
|
|
void vt_resume(void);
|
|
void vt_suspend(void);
|
|
|
|
typedef unsigned int vt_axis_t;
|
|
|
|
/*
|
|
* List of locks
|
|
* (d) locked by vd_lock
|
|
* (b) locked by vb_lock
|
|
* (G) locked by Giant
|
|
* (u) unlocked, locked by higher levels
|
|
* (c) const until freeing
|
|
* (?) yet to be determined
|
|
*/
|
|
|
|
/*
|
|
* Per-device datastructure.
|
|
*/
|
|
|
|
struct vt_device {
|
|
struct vt_window *vd_windows[VT_MAXWINDOWS]; /* (c) Windows. */
|
|
struct vt_window *vd_curwindow; /* (d) Current window. */
|
|
struct vt_window *vd_savedwindow;/* (?) Saved for suspend. */
|
|
struct vt_window *vd_markedwin; /* (?) Copy/paste buf owner. */
|
|
const struct vt_driver *vd_driver; /* (c) Graphics driver. */
|
|
void *vd_softc; /* (u) Driver data. */
|
|
uint16_t vd_mx; /* (?) Mouse X. */
|
|
uint16_t vd_my; /* (?) Mouse Y. */
|
|
vt_axis_t vd_mdirtyx; /* (?) Screen width. */
|
|
vt_axis_t vd_mdirtyy; /* (?) Screen height. */
|
|
uint32_t vd_mstate; /* (?) Mouse state. */
|
|
term_pos_t vd_offset; /* (?) Pixel offset. */
|
|
vt_axis_t vd_width; /* (?) Screen width. */
|
|
vt_axis_t vd_height; /* (?) Screen height. */
|
|
struct mtx vd_lock; /* Per-device lock. */
|
|
struct cv vd_winswitch; /* (d) Window switch notify. */
|
|
struct callout vd_timer; /* (d) Display timer. */
|
|
int vd_flags; /* (d) Device flags. */
|
|
#define VDF_TEXTMODE 0x01 /* Do text mode rendering. */
|
|
#define VDF_SPLASH 0x02 /* Splash screen active. */
|
|
#define VDF_ASYNC 0x04 /* vt_timer() running. */
|
|
#define VDF_INVALID 0x08 /* Entire screen should be re-rendered. */
|
|
#define VDF_DEAD 0x10 /* Early probing found nothing. */
|
|
#define VDF_INITIALIZED 0x20 /* vtterm_cnprobe already done. */
|
|
#define VDF_MOUSECURSOR 0x40 /* Mouse cursor visible. */
|
|
#define VDF_QUIET_BELL 0x80 /* Disable bell. */
|
|
int vd_keyboard; /* (G) Keyboard index. */
|
|
unsigned int vd_kbstate; /* (?) Device unit. */
|
|
unsigned int vd_unit; /* (c) Device unit. */
|
|
};
|
|
|
|
/*
|
|
* Per-window terminal screen buffer.
|
|
*
|
|
* Because redrawing is performed asynchronously, the buffer keeps track
|
|
* of a rectangle that needs to be redrawn (vb_dirtyrect). Because this
|
|
* approach seemed to cause suboptimal performance (when the top left
|
|
* and the bottom right of the screen are modified), it also uses a set
|
|
* of bitmasks to keep track of the rows and columns (mod 64) that have
|
|
* been modified.
|
|
*/
|
|
|
|
struct vt_bufmask {
|
|
uint64_t vbm_row, vbm_col;
|
|
#define VBM_DIRTY UINT64_MAX
|
|
};
|
|
|
|
struct vt_buf {
|
|
struct mtx vb_lock; /* Buffer lock. */
|
|
term_pos_t vb_scr_size; /* (b) Screen dimensions. */
|
|
int vb_flags; /* (b) Flags. */
|
|
#define VBF_CURSOR 0x1 /* Cursor visible. */
|
|
#define VBF_STATIC 0x2 /* Buffer is statically allocated. */
|
|
#define VBF_MTX_INIT 0x4 /* Mutex initialized. */
|
|
#define VBF_SCROLL 0x8 /* scroll locked mode. */
|
|
#define VBF_HISTORY_FULL 0x10 /* All rows filled. */
|
|
int vb_history_size;
|
|
#define VBF_DEFAULT_HISTORY_SIZE 500
|
|
int vb_roffset; /* (b) History rows offset. */
|
|
int vb_curroffset; /* (b) Saved rows offset. */
|
|
term_pos_t vb_cursor; /* (u) Cursor position. */
|
|
term_pos_t vb_mark_start; /* (b) Copy region start. */
|
|
term_pos_t vb_mark_end; /* (b) Copy region end. */
|
|
int vb_mark_last; /* Last mouse event. */
|
|
term_rect_t vb_dirtyrect; /* (b) Dirty rectangle. */
|
|
struct vt_bufmask vb_dirtymask; /* (b) Dirty bitmasks. */
|
|
term_char_t *vb_buffer; /* (u) Data buffer. */
|
|
term_char_t **vb_rows; /* (u) Array of rows */
|
|
};
|
|
|
|
void vtbuf_copy(struct vt_buf *, const term_rect_t *, const term_pos_t *);
|
|
void vtbuf_fill_locked(struct vt_buf *, const term_rect_t *, term_char_t);
|
|
void vtbuf_init_early(struct vt_buf *);
|
|
void vtbuf_init(struct vt_buf *, const term_pos_t *);
|
|
void vtbuf_grow(struct vt_buf *, const term_pos_t *, int);
|
|
void vtbuf_putchar(struct vt_buf *, const term_pos_t *, term_char_t);
|
|
void vtbuf_cursor_position(struct vt_buf *, const term_pos_t *);
|
|
void vtbuf_scroll_mode(struct vt_buf *vb, int yes);
|
|
void vtbuf_undirty(struct vt_buf *, term_rect_t *, struct vt_bufmask *);
|
|
void vtbuf_sethistory_size(struct vt_buf *, int);
|
|
int vtbuf_iscursor(struct vt_buf *vb, int row, int col);
|
|
void vtbuf_cursor_visibility(struct vt_buf *, int);
|
|
#ifndef SC_NO_CUTPASTE
|
|
void vtbuf_mouse_cursor_position(struct vt_buf *vb, int col, int row);
|
|
int vtbuf_set_mark(struct vt_buf *vb, int type, int col, int row);
|
|
int vtbuf_get_marked_len(struct vt_buf *vb);
|
|
void vtbuf_extract_marked(struct vt_buf *vb, term_char_t *buf, int sz);
|
|
#endif
|
|
|
|
#define VTB_MARK_NONE 0
|
|
#define VTB_MARK_END 1
|
|
#define VTB_MARK_START 2
|
|
#define VTB_MARK_WORD 3
|
|
#define VTB_MARK_ROW 4
|
|
#define VTB_MARK_EXTEND 5
|
|
#define VTB_MARK_MOVE 6
|
|
|
|
#define VTBUF_SLCK_ENABLE(vb) vtbuf_scroll_mode((vb), 1)
|
|
#define VTBUF_SLCK_DISABLE(vb) vtbuf_scroll_mode((vb), 0)
|
|
|
|
#define VTBUF_MAX_HEIGHT(vb) \
|
|
((vb)->vb_history_size)
|
|
#define VTBUF_GET_ROW(vb, r) \
|
|
((vb)->vb_rows[((vb)->vb_roffset + (r)) % VTBUF_MAX_HEIGHT(vb)])
|
|
#define VTBUF_GET_FIELD(vb, r, c) \
|
|
((vb)->vb_rows[((vb)->vb_roffset + (r)) % VTBUF_MAX_HEIGHT(vb)][(c)])
|
|
#define VTBUF_FIELD(vb, r, c) \
|
|
((vb)->vb_rows[((vb)->vb_curroffset + (r)) % VTBUF_MAX_HEIGHT(vb)][(c)])
|
|
#define VTBUF_ISCURSOR(vb, r, c) \
|
|
vtbuf_iscursor((vb), (r), (c))
|
|
#define VTBUF_DIRTYROW(mask, row) \
|
|
((mask)->vbm_row & ((uint64_t)1 << ((row) % 64)))
|
|
#define VTBUF_DIRTYCOL(mask, col) \
|
|
((mask)->vbm_col & ((uint64_t)1 << ((col) % 64)))
|
|
#define VTBUF_SPACE_CHAR(attr) (' ' | (attr))
|
|
|
|
#define VHS_SET 0
|
|
#define VHS_CUR 1
|
|
#define VHS_END 2
|
|
int vthistory_seek(struct vt_buf *, int offset, int whence);
|
|
void vthistory_addlines(struct vt_buf *vb, int offset);
|
|
void vthistory_getpos(const struct vt_buf *, unsigned int *offset);
|
|
|
|
/*
|
|
* Per-window datastructure.
|
|
*/
|
|
|
|
struct vt_window {
|
|
struct vt_device *vw_device; /* (c) Device. */
|
|
struct terminal *vw_terminal; /* (c) Terminal. */
|
|
struct vt_buf vw_buf; /* (u) Screen buffer. */
|
|
struct vt_font *vw_font; /* (d) Graphical font. */
|
|
unsigned int vw_number; /* (c) Window number. */
|
|
int vw_kbdmode; /* (?) Keyboard mode. */
|
|
char *vw_kbdsq; /* Escape sequence queue*/
|
|
unsigned int vw_flags; /* (d) Per-window flags. */
|
|
int vw_mouse_level;/* Mouse op mode. */
|
|
#define VWF_BUSY 0x1 /* Busy reconfiguring device. */
|
|
#define VWF_OPENED 0x2 /* TTY in use. */
|
|
#define VWF_SCROLL 0x4 /* Keys influence scrollback. */
|
|
#define VWF_CONSOLE 0x8 /* Kernel message console window. */
|
|
#define VWF_VTYLOCK 0x10 /* Prevent window switch. */
|
|
#define VWF_MOUSE_HIDE 0x20 /* Disable mouse events processing. */
|
|
#define VWF_READY 0x40 /* Window fully initialized. */
|
|
#define VWF_SWWAIT_REL 0x10000 /* Program wait for VT acquire is done. */
|
|
#define VWF_SWWAIT_ACQ 0x20000 /* Program wait for VT release is done. */
|
|
pid_t vw_pid; /* Terminal holding process */
|
|
struct proc *vw_proc;
|
|
struct vt_mode vw_smode; /* switch mode */
|
|
struct callout vw_proc_dead_timer;
|
|
struct vt_window *vw_switch_to;
|
|
};
|
|
|
|
#define VT_AUTO 0 /* switching is automatic */
|
|
#define VT_PROCESS 1 /* switching controlled by prog */
|
|
#define VT_KERNEL 255 /* switching controlled in kernel */
|
|
|
|
#define IS_VT_PROC_MODE(vw) ((vw)->vw_smode.mode == VT_PROCESS)
|
|
|
|
/*
|
|
* Per-device driver routines.
|
|
*
|
|
* vd_bitbltchr is used when the driver operates in graphics mode, while
|
|
* vd_putchar is used when the driver operates in text mode
|
|
* (VDF_TEXTMODE).
|
|
*/
|
|
|
|
typedef int vd_init_t(struct vt_device *vd);
|
|
typedef int vd_probe_t(struct vt_device *vd);
|
|
typedef void vd_postswitch_t(struct vt_device *vd);
|
|
typedef void vd_blank_t(struct vt_device *vd, term_color_t color);
|
|
typedef void vd_bitbltchr_t(struct vt_device *vd, const uint8_t *src,
|
|
const uint8_t *mask, int bpl, vt_axis_t top, vt_axis_t left,
|
|
unsigned int width, unsigned int height, term_color_t fg, term_color_t bg);
|
|
typedef void vd_maskbitbltchr_t(struct vt_device *vd, const uint8_t *src,
|
|
const uint8_t *mask, int bpl, vt_axis_t top, vt_axis_t left,
|
|
unsigned int width, unsigned int height, term_color_t fg, term_color_t bg);
|
|
typedef void vd_putchar_t(struct vt_device *vd, term_char_t,
|
|
vt_axis_t top, vt_axis_t left, term_color_t fg, term_color_t bg);
|
|
typedef int vd_fb_ioctl_t(struct vt_device *, u_long, caddr_t, struct thread *);
|
|
typedef int vd_fb_mmap_t(struct vt_device *, vm_ooffset_t, vm_paddr_t *, int,
|
|
vm_memattr_t *);
|
|
typedef void vd_drawrect_t(struct vt_device *, int, int, int, int, int,
|
|
term_color_t);
|
|
typedef void vd_setpixel_t(struct vt_device *, int, int, term_color_t);
|
|
|
|
struct vt_driver {
|
|
char vd_name[16];
|
|
/* Console attachment. */
|
|
vd_probe_t *vd_probe;
|
|
vd_init_t *vd_init;
|
|
|
|
/* Drawing. */
|
|
vd_blank_t *vd_blank;
|
|
vd_bitbltchr_t *vd_bitbltchr;
|
|
vd_maskbitbltchr_t *vd_maskbitbltchr;
|
|
vd_drawrect_t *vd_drawrect;
|
|
vd_setpixel_t *vd_setpixel;
|
|
|
|
/* Framebuffer ioctls, if present. */
|
|
vd_fb_ioctl_t *vd_fb_ioctl;
|
|
|
|
/* Framebuffer mmap, if present. */
|
|
vd_fb_mmap_t *vd_fb_mmap;
|
|
|
|
/* Text mode operation. */
|
|
vd_putchar_t *vd_putchar;
|
|
|
|
/* Update display setting on vt switch. */
|
|
vd_postswitch_t *vd_postswitch;
|
|
|
|
/* Priority to know which one can override */
|
|
int vd_priority;
|
|
#define VD_PRIORITY_DUMB 10
|
|
#define VD_PRIORITY_GENERIC 100
|
|
#define VD_PRIORITY_SPECIFIC 1000
|
|
};
|
|
|
|
/*
|
|
* Console device madness.
|
|
*
|
|
* Utility macro to make early vt(4) instances work.
|
|
*/
|
|
|
|
extern const struct terminal_class vt_termclass;
|
|
void vt_upgrade(struct vt_device *vd);
|
|
|
|
#define PIXEL_WIDTH(w) ((w) / 8)
|
|
#define PIXEL_HEIGHT(h) ((h) / 16)
|
|
|
|
#ifndef VT_FB_DEFAULT_WIDTH
|
|
#define VT_FB_DEFAULT_WIDTH 2048
|
|
#endif
|
|
#ifndef VT_FB_DEFAULT_HEIGHT
|
|
#define VT_FB_DEFAULT_HEIGHT 1200
|
|
#endif
|
|
|
|
#define VT_CONSDEV_DECLARE(driver, width, height, softc) \
|
|
static struct terminal driver ## _consterm; \
|
|
static struct vt_window driver ## _conswindow; \
|
|
static struct vt_device driver ## _consdev = { \
|
|
.vd_driver = &driver, \
|
|
.vd_softc = (softc), \
|
|
.vd_flags = VDF_INVALID, \
|
|
.vd_windows = { [VT_CONSWINDOW] = &driver ## _conswindow, }, \
|
|
.vd_curwindow = &driver ## _conswindow, \
|
|
.vd_markedwin = NULL, \
|
|
.vd_kbstate = 0, \
|
|
}; \
|
|
static term_char_t driver ## _constextbuf[(width) * \
|
|
(VBF_DEFAULT_HISTORY_SIZE)]; \
|
|
static term_char_t *driver ## _constextbufrows[ \
|
|
VBF_DEFAULT_HISTORY_SIZE]; \
|
|
static struct vt_window driver ## _conswindow = { \
|
|
.vw_number = VT_CONSWINDOW, \
|
|
.vw_flags = VWF_CONSOLE, \
|
|
.vw_buf = { \
|
|
.vb_buffer = driver ## _constextbuf, \
|
|
.vb_rows = driver ## _constextbufrows, \
|
|
.vb_history_size = VBF_DEFAULT_HISTORY_SIZE, \
|
|
.vb_curroffset = 0, \
|
|
.vb_roffset = 0, \
|
|
.vb_flags = VBF_STATIC, \
|
|
.vb_mark_start = { \
|
|
.tp_row = 0, \
|
|
.tp_col = 0, \
|
|
}, \
|
|
.vb_mark_end = { \
|
|
.tp_row = 0, \
|
|
.tp_col = 0, \
|
|
}, \
|
|
.vb_scr_size = { \
|
|
.tp_row = height, \
|
|
.tp_col = width, \
|
|
}, \
|
|
}, \
|
|
.vw_device = &driver ## _consdev, \
|
|
.vw_terminal = &driver ## _consterm, \
|
|
.vw_kbdmode = K_XLATE, \
|
|
}; \
|
|
TERMINAL_DECLARE_EARLY(driver ## _consterm, vt_termclass, \
|
|
&driver ## _conswindow); \
|
|
SYSINIT(vt_early_cons, SI_SUB_INT_CONFIG_HOOKS, SI_ORDER_ANY, \
|
|
vt_upgrade, &driver ## _consdev)
|
|
|
|
/* name argument is not used yet. */
|
|
#define VT_DRIVER_DECLARE(name, drv) DATA_SET(vt_drv_set, drv)
|
|
|
|
/*
|
|
* Fonts.
|
|
*
|
|
* Remapping tables are used to map Unicode points to glyphs. They need
|
|
* to be sorted, because vtfont_lookup() performs a binary search. Each
|
|
* font has two remapping tables, for normal and bold. When a character
|
|
* is not present in bold, it uses a normal glyph. When no glyph is
|
|
* available, it uses glyph 0, which is normally equal to U+FFFD.
|
|
*/
|
|
|
|
struct vt_font_map {
|
|
uint32_t vfm_src;
|
|
uint16_t vfm_dst;
|
|
uint16_t vfm_len;
|
|
};
|
|
|
|
struct vt_font {
|
|
struct vt_font_map *vf_map[VFNT_MAPS];
|
|
uint8_t *vf_bytes;
|
|
unsigned int vf_height, vf_width;
|
|
unsigned int vf_map_count[VFNT_MAPS];
|
|
unsigned int vf_refcount;
|
|
};
|
|
|
|
#ifndef SC_NO_CUTPASTE
|
|
struct mouse_cursor {
|
|
uint8_t map[64 * 64 / 8];
|
|
uint8_t mask[64 * 64 / 8];
|
|
uint8_t w;
|
|
uint8_t h;
|
|
};
|
|
#endif
|
|
|
|
const uint8_t *vtfont_lookup(const struct vt_font *vf, term_char_t c);
|
|
struct vt_font *vtfont_ref(struct vt_font *vf);
|
|
void vtfont_unref(struct vt_font *vf);
|
|
int vtfont_load(vfnt_t *f, struct vt_font **ret);
|
|
|
|
/* Sysmouse. */
|
|
void sysmouse_process_event(mouse_info_t *mi);
|
|
#ifndef SC_NO_CUTPASTE
|
|
void vt_mouse_event(int type, int x, int y, int event, int cnt, int mlevel);
|
|
void vt_mouse_state(int show);
|
|
#endif
|
|
#define VT_MOUSE_SHOW 1
|
|
#define VT_MOUSE_HIDE 0
|
|
|
|
#endif /* !_DEV_VT_VT_H_ */
|
|
|