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Additional ptrace commands for fault injection.

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This commit is contained in:
Philip Homburg 2006-10-20 14:14:08 +00:00
parent be928f01a5
commit 1ce2f75627
1 changed files with 29 additions and 0 deletions
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29
servers/pm/trace.c
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@ -47,6 +47,35 @@ PUBLIC int do_trace()
mp->mp_reply.reply_trace = 0;
return(OK);
}
if (m_in.request == T_READB_INS)
{
/* Special hack for reading text segments */
if (mp->mp_effuid != SUPER_USER)
return(EPERM);
if ((child=find_proc(m_in.pid))==NIL_MPROC)
return(ESRCH);
r= sys_trace(m_in.request,child->mp_endpoint,m_in.taddr,&m_in.data);
if (r != OK) return(r);
mp->mp_reply.reply_trace = m_in.data;
return(OK);
}
if (m_in.request == T_WRITEB_INS)
{
/* Special hack for patching text segments */
if (mp->mp_effuid != SUPER_USER)
return(EPERM);
if ((child=find_proc(m_in.pid))==NIL_MPROC)
return(ESRCH);
r= sys_trace(m_in.request,child->mp_endpoint,m_in.taddr,&m_in.data);
if (r != OK) return(r);
mp->mp_reply.reply_trace = m_in.data;
return(OK);
}
if ((child=find_proc(m_in.pid))==NIL_MPROC || !(child->mp_flags & STOPPED)) {
return(ESRCH);
}