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2008-05-19 Roland McGrath <roland@redhat.com>

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* util.c [LINUX] (setbpt): Use correct SYS_clone number for current
	personality.
	Fixes RH#447475.
This commit is contained in:
Roland McGrath 2008-05-20 00:34:34 +00:00
parent fee60a6cc3
commit 3291ef2013
1 changed files with 18 additions and 1 deletions
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19
util.c
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@ -1275,6 +1275,8 @@ struct tcb *tcp;
#if defined LINUX
#include "syscall.h"
#include <sys/syscall.h>
#ifndef CLONE_PTRACE
# define CLONE_PTRACE 0x00002000
@ -1473,6 +1475,7 @@ int
setbpt(tcp)
struct tcb *tcp;
{
static int clone_scno[SUPPORTED_PERSONALITIES] = { SYS_clone };
extern int change_syscall(struct tcb *, int);
arg_setup_state state;
@ -1481,6 +1484,20 @@ struct tcb *tcp;
return -1;
}
/*
* It's a silly kludge to initialize this with a search at runtime.
* But it's better than maintaining another magic thing in the
* godforsaken tables.
*/
if (clone_scno[current_personality] == 0) {
int i;
for (i = 0; i < nsyscalls; ++i)
if (sysent[i].sys_func == sys_clone) {
clone_scno[current_personality] = i;
break;
}
}
switch (known_scno(tcp)) {
#ifdef SYS_vfork
case SYS_vfork:
@ -1492,7 +1509,7 @@ struct tcb *tcp;
if (arg_setup (tcp, &state) < 0
|| get_arg0 (tcp, &state, &tcp->inst[0]) < 0
|| get_arg1 (tcp, &state, &tcp->inst[1]) < 0
|| change_syscall(tcp, SYS_clone) < 0
|| change_syscall(tcp, clone_scno[current_personality]) < 0
|| set_arg0 (tcp, &state, CLONE_PTRACE|SIGCHLD) < 0
|| set_arg1 (tcp, &state, 0) < 0
|| arg_finish_change (tcp, &state) < 0)