hardenedbsd/HardenedBSD
1
0
Fork 0
mirror of https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git synced 2024-12-25 12:02:01 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Reading NCR registers is not secure at all times, so prevent

Browse Source 
an ordinary user from doing this. (Problem pointed out by
Guido van Rooij).
This commit is contained in:
Stefan Eßer 1995-03-16 15:10:11 +00:00
parent f37ec55185
commit 619e03fa69
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=7082
1 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
usr.sbin/ncrcontrol/ncrcontrol.c
View File

@ -1,6 +1,6 @@
/**************************************************************************
**
** $Id: ncrcontrol.c,v 1.5 1995/02/03 20:49:10 bde Exp $
** $Id: ncrcontrol.c,v 1.6 1995/03/14 21:12:26 se Exp $
**
** Utility for NCR 53C810 device driver.
**
@ -1310,7 +1310,7 @@ static void dump_ncr (void)
dump_link (" jump_tcb", &ncr.jump_tcb);
printf (" register: @ %x (p=%x)\n", ncr.vaddr, ncr.paddr);
if (strchr (debug_opt, 'r')) {
if (wizard && strchr (debug_opt, 'r')) {
struct ncr_reg reg;
if (!KVM_READ (
@ -1374,7 +1374,7 @@ static void dump_ncr (void)
printf (" lasttime: %s", ctime ((time_t*)&ncr.lasttime));
printf ("\n");
if (strchr (debug_opt, 'd') && ncr.regtime.tv_sec) {
if (wizard && strchr (debug_opt, 'd') && ncr.regtime.tv_sec) {
printf (" regdump: %s", ctime (&ncr.regtime.tv_sec));
dump_reg (&ncr.regdump);
};
@ -1444,6 +1444,11 @@ do_debug(char * arg)
);
if (strchr (debug_opt, 'n')) dump_ncr ();
if (!wizard) {
fprintf (stderr, "%s: You are NOT a wizard!\n", prog);
exit (2);
};
if (strchr (debug_opt, 'r')) {
struct ncr_reg reg;
if (!KVM_READ (
@ -1554,7 +1559,8 @@ void main(argc, argv)
break;
case 'w':
wizard=1;
if(geteuid()==0)
wizard=1;
break;
case 'v':
verbose++;