#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/security.h>
+#include <linux/signal.h>
+#include <linux/vs_base.h>
#include <asm/pgtable.h>
#include <asm/system.h>
}
static void
-pt_succ_return_linux(struct pt_regs *regs, unsigned long value, long *addr)
+pt_succ_return_linux(struct pt_regs *regs, unsigned long value, long __user *addr)
{
- if (put_user(value, (long __user *) addr)) {
+ if (put_user(value, addr)) {
pt_error_return(regs, EFAULT);
return;
}
}
static void
-pt_os_succ_return (struct pt_regs *regs, unsigned long val, long *addr)
+pt_os_succ_return (struct pt_regs *regs, unsigned long val, long __user *addr)
{
if (current->personality == PER_SUNOS)
pt_succ_return (regs, val);
/* Fuck me gently with a chainsaw... */
static inline void read_sunos_user(struct pt_regs *regs, unsigned long offset,
- struct task_struct *tsk, long *addr)
+ struct task_struct *tsk, long __user *addr)
{
struct pt_regs *cregs = tsk->thread.kregs;
- struct thread_info *t = tsk->thread_info;
+ struct thread_info *t = task_thread_info(tsk);
int v;
if(offset >= 1024)
struct task_struct *tsk)
{
struct pt_regs *cregs = tsk->thread.kregs;
- struct thread_info *t = tsk->thread_info;
+ struct thread_info *t = task_thread_info(tsk);
unsigned long value = regs->u_regs[UREG_I3];
if(offset >= 1024)
s, (int) request, (int) pid, addr, data, addr2);
}
#endif
- if(request == PTRACE_TRACEME) {
- int ret;
- /* are we already being traced? */
- if (current->ptrace & PT_PTRACED) {
- pt_error_return(regs, EPERM);
- goto out;
- }
- ret = security_ptrace(current->parent, current);
- if (ret) {
+ if (request == PTRACE_TRACEME) {
+ ret = ptrace_traceme();
+ if (ret < 0)
pt_error_return(regs, -ret);
- goto out;
- }
-
- /* set the ptrace bit in the process flags. */
- current->ptrace |= PT_PTRACED;
- pt_succ_return(regs, 0);
- goto out;
- }
-#ifndef ALLOW_INIT_TRACING
- if(pid == 1) {
- /* Can't dork with init. */
- pt_error_return(regs, EPERM);
+ else
+ pt_succ_return(regs, 0);
goto out;
}
-#endif
- read_lock(&tasklist_lock);
- child = find_task_by_pid(pid);
- if (child)
- get_task_struct(child);
- read_unlock(&tasklist_lock);
- if (!child) {
- pt_error_return(regs, ESRCH);
+ child = ptrace_get_task_struct(pid);
+ if (IS_ERR(child)) {
+ ret = PTR_ERR(child);
+ pt_error_return(regs, -ret);
goto out;
}
- if (!vx_check(vx_task_xid(child), VX_WATCH|VX_IDENT)) {
+ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT)) {
pt_error_return(regs, ESRCH);
goto out_tsk;
}
if (access_process_vm(child, addr,
&tmp, sizeof(tmp), 0) == sizeof(tmp))
- pt_os_succ_return(regs, tmp, (long *)data);
+ pt_os_succ_return(regs, tmp, (long __user *)data);
else
pt_error_return(regs, EIO);
goto out_tsk;
}
case PTRACE_PEEKUSR:
- read_sunos_user(regs, addr, child, (long *) data);
+ read_sunos_user(regs, addr, child, (long __user *) data);
goto out_tsk;
case PTRACE_POKEUSR:
struct pt_regs *cregs = child->thread.kregs;
int rval;
- rval = verify_area(VERIFY_WRITE, pregs, sizeof(struct pt_regs));
- if(rval) {
+ if (!access_ok(VERIFY_WRITE, pregs, sizeof(struct pt_regs))) {
+ rval = -EFAULT;
pt_error_return(regs, -rval);
goto out_tsk;
}
/* Must be careful, tracing process can only set certain
* bits in the psr.
*/
- i = verify_area(VERIFY_READ, pregs, sizeof(struct pt_regs));
- if(i) {
- pt_error_return(regs, -i);
+ if (!access_ok(VERIFY_READ, pregs, sizeof(struct pt_regs))) {
+ pt_error_return(regs, EFAULT);
goto out_tsk;
}
__get_user(psr, (&pregs->psr));
psr &= PSR_ICC;
cregs->psr &= ~PSR_ICC;
cregs->psr |= psr;
- if(!((pc | npc) & 3)) {
+ if (!((pc | npc) & 3)) {
cregs->pc = pc;
cregs->npc =npc;
}
struct fps __user *fps = (struct fps __user *) addr;
int i;
- i = verify_area(VERIFY_WRITE, fps, sizeof(struct fps));
- if(i) {
+ if (!access_ok(VERIFY_WRITE, fps, sizeof(struct fps))) {
+ i = -EFAULT;
pt_error_return(regs, -i);
goto out_tsk;
}
struct fps __user *fps = (struct fps __user *) addr;
int i;
- i = verify_area(VERIFY_READ, fps, sizeof(struct fps));
- if(i) {
+ if (!access_ok(VERIFY_READ, fps, sizeof(struct fps))) {
+ i = -EFAULT;
pt_error_return(regs, -i);
goto out_tsk;
}
addr = 1;
case PTRACE_CONT: { /* restart after signal. */
- if (data > _NSIG) {
+ if (!valid_signal(data)) {
pt_error_return(regs, EIO);
goto out_tsk;
}
- if (addr != 1) {
- if (addr & 3) {
- pt_error_return(regs, EINVAL);
- goto out_tsk;
- }
-#ifdef DEBUG_PTRACE
- printk ("Original: %08lx %08lx\n", child->thread.kregs->pc, child->thread.kregs->npc);
- printk ("Continuing with %08lx %08lx\n", addr, addr+4);
-#endif
- child->thread.kregs->pc = addr;
- child->thread.kregs->npc = addr + 4;
- }
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
* exit.
*/
case PTRACE_KILL: {
- if (child->state == TASK_ZOMBIE) { /* already dead */
+ if (child->exit_state == EXIT_ZOMBIE) { /* already dead */
pt_succ_return(regs, 0);
goto out_tsk;
}
return;
if (!(current->ptrace & PT_PTRACED))
return;
- current->exit_code = SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
- ? 0x80 : 0);
- current->state = TASK_STOPPED;
current->thread.flags ^= MAGIC_CONSTANT;
- notify_parent(current, SIGCHLD);
- schedule();
+ ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+ ? 0x80 : 0));
/*
* this isn't the same as continuing with a signal, but it will do
* for normal use. strace only continues with a signal if the
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