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2008-06-27 Jan Kratochvil <jan.kratochvil@redhat.com>

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* util.c (CLONE_VFORK): Define if not defined already.
	(setbpt): Clear CLONE_VFORK for SYS_clone and SYS_clone2.
	Reported by Vitaly Mayatskikh.
This commit is contained in:
Roland McGrath 2008-07-18 01:09:44 +00:00
parent b4e30f0903
commit d6ff0d520d
1 changed files with 14 additions and 6 deletions
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20
util.c
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@ -1281,6 +1281,9 @@ struct tcb *tcp;
#ifndef CLONE_PTRACE
# define CLONE_PTRACE 0x00002000
#endif
#ifndef CLONE_VFORK
# define CLONE_VFORK 0x00004000
#endif
#ifndef CLONE_STOPPED
# define CLONE_STOPPED 0x02000000
#endif
@ -1524,12 +1527,17 @@ struct tcb *tcp;
#ifdef SYS_clone2
case SYS_clone2:
#endif
if ((tcp->u_arg[arg0_index] & CLONE_PTRACE) == 0
&& (arg_setup (tcp, &state) < 0
|| set_arg0 (tcp, &state,
tcp->u_arg[arg0_index] | CLONE_PTRACE) < 0
|| arg_finish_change (tcp, &state) < 0))
return -1;
/* ia64 calls directly `clone (CLONE_VFORK)' contrary to
x86 SYS_vfork above. Even on x86 we turn the vfork
semantics into plain fork - each application must not
depend on the vfork specifics according to POSIX. We
would hang waiting for the parent resume otherwise. */
if ((arg_setup (tcp, &state) < 0
|| set_arg0 (tcp, &state,
(tcp->u_arg[arg0_index] | CLONE_PTRACE)
& ~CLONE_VFORK) < 0
|| arg_finish_change (tcp, &state) < 0))
return -1;
tcp->flags |= TCB_BPTSET;
tcp->inst[0] = tcp->u_arg[arg0_index];
tcp->inst[1] = tcp->u_arg[arg1_index];