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Drop privileges if not using standard namelist or file.

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Submitted by:	smpatel (Sujal Patel)
This commit is contained in:
pst 1996-05-30 02:19:43 +00:00
parent b0a3f5004d
commit 88f441d9a6
1 changed files with 8 additions and 1 deletions
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9
usr.sbin/ncrcontrol/ncrcontrol.c
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@ -1,6 +1,6 @@
/************************************************************************** /**************************************************************************
** **
** $Id: ncrcontrol.c,v 1.9 1995/09/14 18:14:28 se Exp $ ** $Id: ncrcontrol.c,v 1.10 1995/12/28 14:40:59 se Exp $
** **
** Utility for NCR 53C810 device driver. ** Utility for NCR 53C810 device driver.
** **
@ -191,6 +191,13 @@ void open_kvm(int flags)
} }
#endif #endif
#if defined(__NetBSD__) || (__FreeBSD__ >= 2) #if defined(__NetBSD__) || (__FreeBSD__ >= 2)
/*
* Discard setgid privileges if not the running kernel so that bad
* guys can't print interesting stuff from kernel memory.
*/
if (vmunix != NULL || kmemf != NULL)
setgid(getgid());
kvm = kvm_openfiles(vmunix, kmemf, NULL, flags, errbuf); kvm = kvm_openfiles(vmunix, kmemf, NULL, flags, errbuf);
if (kvm == NULL) { if (kvm == NULL) {
fprintf(stderr, "%s: kvm_openfiles: %s\n", prog, errbuf); fprintf(stderr, "%s: kvm_openfiles: %s\n", prog, errbuf);