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fix to ptrace() found by kipp
[unix-history]
/
usr
/
src
/
sys
/
kern
/
kern_proc.c
diff --git
a/usr/src/sys/kern/kern_proc.c
b/usr/src/sys/kern/kern_proc.c
index
b985dca
..
4497220
100644
(file)
--- a/
usr/src/sys/kern/kern_proc.c
+++ b/
usr/src/sys/kern/kern_proc.c
@@
-1,4
+1,4
@@
-/* kern_proc.c 4.
4
%G% */
+/* kern_proc.c 4.
5
%G% */
#include "../h/param.h"
#include "../h/systm.h"
#include "../h/param.h"
#include "../h/systm.h"
@@
-66,6
+66,8
@@
exece()
again:
if(access(ip, IEXEC))
goto bad;
again:
if(access(ip, IEXEC))
goto bad;
+ if((u.u_procp->p_flag&STRC) && access(ip, IREAD))
+ goto bad;
if((ip->i_mode & IFMT) != IFREG ||
(ip->i_mode & (IEXEC|(IEXEC>>3)|(IEXEC>>6))) == 0) {
u.u_error = EACCES;
if((ip->i_mode & IFMT) != IFREG ||
(ip->i_mode & (IEXEC|(IEXEC>>3)|(IEXEC>>6))) == 0) {
u.u_error = EACCES;