/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
*
* from: @(#)sys_process.c 8.1 (Berkeley) 6/10/93
*/
-/*
- * HISTORY
- *
- * 10-Jun-97 Umesh Vaishampayan (umeshv@apple.com)
- * Ported to PPC. Cleaned up the architecture specific code.
- */
#include <machine/reg.h>
#include <machine/psl.h>
#include <sys/uio.h>
#include <sys/user.h>
#include <sys/sysctl.h>
+#include <sys/wait.h>
#include <sys/mount.h>
+#include <bsm/audit_kernel.h>
+
#include <kern/task.h>
#include <kern/thread.h>
#include <mach/machine/thread_status.h>
#define CLR(t, f) (t) &= ~(f)
#define ISSET(t, f) ((t) & (f))
-void psignal_lock __P((struct proc *, int, int, int));
+void psignal_lock __P((struct proc *, int, int));
+
/*
* sys-trace system call.
*/
caddr_t addr;
int data;
};
+
int
ptrace(p, uap, retval)
struct proc *p;
vm_offset_t start_addr, end_addr,
kern_addr, offset;
vm_size_t size;
- boolean_t change_protection;
task_t task;
thread_t thread;
thread_act_t th_act;
int *locr0;
int error = 0;
#if defined(ppc)
- struct ppc_saved_state statep;
+ struct ppc_thread_state64 statep;
#elif defined(i386)
struct i386_saved_state statep;
#else
#error architecture not supported
#endif
unsigned long state_count;
+ int tr_sigexc = 0;
+ AUDIT_ARG(cmd, uap->req);
+ AUDIT_ARG(pid, uap->pid);
+ AUDIT_ARG(addr, uap->addr);
+ AUDIT_ARG(value, uap->data);
+
+ if (uap->req == PT_DENY_ATTACH) {
+ if (ISSET(p->p_flag, P_TRACED)) {
+ exit1(p, W_EXITCODE(ENOTSUP, 0), retval);
+ /* drop funnel before we return */
+ thread_funnel_set(kernel_flock, FALSE);
+ thread_exception_return();
+ /* NOTREACHED */
+ }
+ SET(p->p_flag, P_NOATTACH);
+
+ return(0);
+ }
+
+ if (uap->req == PT_FORCEQUOTA) {
+ if (is_suser()) {
+ SET(t->p_flag, P_FORCEQUOTA);
+ return (0);
+ } else
+ return (EPERM);
+ }
/*
* Intercept and deal with "please trace me" request.
t->p_oppid = t->p_pptr->p_pid;
return(0);
}
+ if (uap->req == PT_SIGEXC) {
+ if (ISSET(p->p_flag, P_TRACED)) {
+ SET(p->p_flag, P_SIGEXC);
+ return(0);
+ } else
+ return(EINVAL);
+ }
/*
* Locate victim, and make sure it is traceable.
return (ESRCH);
+ AUDIT_ARG(process, t);
+
/* We do not want ptrace to do anything with kernel, init
* and mach_init
*/
return (EPERM);
task = t->task;
+ if (uap->req == PT_ATTACHEXC) {
+ uap->req = PT_ATTACH;
+ tr_sigexc = 1;
+ }
if (uap->req == PT_ATTACH) {
/*
(error = suser(p->p_ucred, &p->p_acflag)) != 0)
return (error);
+ if ((p->p_flag & P_TRACED) && isinferior(p, t))
+ return(EPERM);
+
+ if (ISSET(t->p_flag, P_NOATTACH)) {
+ psignal(p, SIGSEGV);
+ return (EBUSY);
+ }
SET(t->p_flag, P_TRACED);
+ if (tr_sigexc)
+ SET(t->p_flag, P_SIGEXC);
+
t->p_oppid = t->p_pptr->p_pid;
if (t->p_pptr != p)
proc_reparent(t, p);
t->p_oppid = 0;
CLR(t->p_flag, P_TRACED);
+ CLR(t->p_flag, P_SIGEXC);
goto resume;
case PT_KILL:
* Tell child process to kill itself after it
* is resumed by adding NSIG to p_cursig. [see issig]
*/
- psignal_lock(t, SIGKILL, 0, 1);
+ psignal_lock(t, SIGKILL, 0);
goto resume;
case PT_STEP: /* single step the child */
case PT_CONTINUE: /* continue the child */
th_act = (thread_act_t)get_firstthread(task);
- if (th_act == THREAD_NULL)
+ if (th_act == THR_ACT_NULL)
goto errorLabel;
ut = (uthread_t)get_bsdthread_info(th_act);
locr0 = ut->uu_ar0;
#if defined(i386)
state_count = i386_NEW_THREAD_STATE_COUNT;
- if (act_machine_get_state(th_act, i386_NEW_THREAD_STATE, &statep, &state_count) != KERN_SUCCESS) {
+ if (thread_getstatus(th_act, i386_NEW_THREAD_STATE, &statep, &state_count) != KERN_SUCCESS) {
goto errorLabel;
}
#elif defined(ppc)
- state_count = PPC_THREAD_STATE_COUNT;
- if (act_machine_get_state(th_act, PPC_THREAD_STATE, &statep, &state_count) != KERN_SUCCESS) {
+ state_count = PPC_THREAD_STATE64_COUNT;
+ if (thread_getstatus(th_act, PPC_THREAD_STATE64, &statep, &state_count) != KERN_SUCCESS) {
goto errorLabel;
}
#else
if (!ALIGNED((int)uap->addr, sizeof(int)))
return (ERESTART);
- statep.srr0 = (int)uap->addr;
- state_count = PPC_THREAD_STATE_COUNT;
- if (act_machine_set_state(th_act, PPC_THREAD_STATE, &statep, &state_count) != KERN_SUCCESS) {
+ statep.srr0 = (uint64_t)((uint32_t)uap->addr);
+ state_count = PPC_THREAD_STATE64_COUNT;
+ if (thread_setstatus(th_act, PPC_THREAD_STATE64, &statep, &state_count) != KERN_SUCCESS) {
goto errorLabel;
}
#undef ALIGNED
goto errorLabel;
if (uap->data != 0) {
- psignal_lock(t, uap->data, 0, 1);
+ psignal_lock(t, uap->data, 0);
}
#if defined(ppc)
- state_count = PPC_THREAD_STATE_COUNT;
- if (act_machine_get_state(th_act, PPC_THREAD_STATE, &statep, &state_count) != KERN_SUCCESS) {
+ state_count = PPC_THREAD_STATE64_COUNT;
+ if (thread_getstatus(th_act, PPC_THREAD_STATE64, &statep, &state_count) != KERN_SUCCESS) {
goto errorLabel;
}
#endif
#endif
}
#if defined (ppc)
- state_count = PPC_THREAD_STATE_COUNT;
- if (act_machine_set_state(th_act, PPC_THREAD_STATE, &statep, &state_count) != KERN_SUCCESS) {
+ state_count = PPC_THREAD_STATE64_COUNT;
+ if (thread_setstatus(th_act, PPC_THREAD_STATE64, &statep, &state_count) != KERN_SUCCESS) {
goto errorLabel;
}
#endif
t->p_stat = SRUN;
if (t->sigwait) {
wakeup((caddr_t)&(t->sigwait));
- task_release(task);
+ if ((t->p_flag & P_SIGEXC) == 0)
+ task_release(task);
}
break;
+ case PT_THUPDATE: {
+ thread_act_t target_act;
+
+ if ((unsigned)uap->data >= NSIG)
+ goto errorLabel;
+ th_act = (thread_act_t)port_name_to_act((void *)uap->addr);
+ if (th_act == THR_ACT_NULL)
+ return (ESRCH);
+ ut = (uthread_t)get_bsdthread_info(th_act);
+ if (uap->data)
+ ut->uu_siglist |= sigmask(uap->data);
+ t->p_xstat = uap->data;
+ t->p_stat = SRUN;
+ act_deallocate(th_act);
+ return(0);
+ }
+ break;
+errorLabel:
default:
- errorLabel:
return(EINVAL);
}
+
return(0);
}
projects / apple / xnu.git / blobdiff