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1. Allow information about current history size be retrieved using ioctl(2);

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2. modify screen dumpung routine, so that in addition to visible area, it
   allows to grab any portion of history buffer as well.
This commit is contained in:
Maxim Sobolev 2002-08-19 16:32:09 +00:00
parent 14213e7d3e
commit 41a2a5c1c6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=102108
2 changed files with 47 additions and 5 deletions
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49
sys/dev/syscons/syscons.c
View File

@ -749,6 +749,7 @@ scioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
ptr->mv_row = scp->ypos;
ptr->mv_csz = scp->xsize;
ptr->mv_rsz = scp->ysize;
ptr->mv_hsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
/*
* The following fields are filled by the terminal emulator. XXX
*
@ -835,20 +836,58 @@ scioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
case CONS_SCRSHOT: /* get a screen shot */
{
scrshot_t *ptr = (scrshot_t*)data;
int retval, hist_rsz;
size_t lsize, csize;
vm_offset_t frbp, hstp;
unsigned lnum;
scrshot_t *ptr = (scrshot_t *)data;
void *outp = ptr->buf;
s = spltty();
if (ISGRAPHSC(scp)) {
splx(s);
return EOPNOTSUPP;
}
if (scp->xsize != ptr->xsize || scp->ysize != ptr->ysize) {
hist_rsz = (scp->history != NULL) ? scp->history->vtb_rows : 0;
if ((ptr->x + ptr->xsize) > scp->xsize ||
(ptr->y + ptr->ysize) > (scp->ysize + hist_rsz)) {
splx(s);
return EINVAL;
}
copyout ((void*)scp->vtb.vtb_buffer, ptr->buf,
ptr->xsize * ptr->ysize * sizeof(u_int16_t));
lsize = scp->xsize * sizeof(u_int16_t);
csize = ptr->xsize * sizeof(u_int16_t);
/* Pointer to the last line of framebuffer */
frbp = scp->vtb.vtb_buffer + scp->ysize * lsize + ptr->x *
sizeof(u_int16_t);
/* Pointer to the last line of target buffer */
(vm_offset_t)outp += ptr->ysize * csize;
/* Pointer to the last line of history buffer */
if (scp->history != NULL)
hstp = scp->history->vtb_buffer + sc_vtb_tail(scp->history) *
sizeof(u_int16_t) + ptr->x * sizeof(u_int16_t);
else
hstp = NULL;
retval = 0;
for (lnum = 0; lnum < (ptr->y + ptr->ysize); lnum++) {
if (lnum < scp->ysize) {
frbp -= lsize;
} else {
hstp -= lsize;
if (hstp < scp->history->vtb_buffer)
hstp += scp->history->vtb_rows * lsize;
frbp = hstp;
}
if (lnum < ptr->y)
continue;
(vm_offset_t)outp -= csize;
retval = copyout((void *)frbp, outp, csize);
if (retval != 0)
break;
}
splx(s);
return 0;
return retval;
}
case VT_SETMODE: /* set screen switcher mode */

3
sys/sys/consio.h
View File

@ -228,6 +228,7 @@ struct vid_info {
u_short font_size;
u_short mv_row, mv_col;
u_short mv_rsz, mv_csz;
u_short mv_hsz;
struct colors mv_norm,
mv_rev,
mv_grfc;
@ -263,6 +264,8 @@ typedef struct vid_info vid_info_t;
#define CONS_RELKBD _IO('c', 111)
struct scrshot {
int x;
int y;
int xsize;
int ysize;
u_int16_t* buf;