Add endpoint checks in scheduling kernel calls
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49165ef796
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78186ee5f5
2 changed files with 9 additions and 1 deletions
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@ -9,12 +9,16 @@
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PUBLIC int do_schedctl(struct proc * caller, message * m_ptr)
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PUBLIC int do_schedctl(struct proc * caller, message * m_ptr)
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{
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{
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struct proc *p;
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struct proc *p;
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int proc_nr;
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/* Only system processes can change process schedulers */
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/* Only system processes can change process schedulers */
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if (! (priv(caller)->s_flags & SYS_PROC))
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if (! (priv(caller)->s_flags & SYS_PROC))
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return(EPERM);
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return(EPERM);
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p = proc_addr(_ENDPOINT_P(m_ptr->SCHEDULING_ENDPOINT));
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if (!isokendpt(m_ptr->SCHEDULING_ENDPOINT, &proc_nr))
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return EINVAL;
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p = proc_addr(proc_nr);
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p->p_scheduler = caller;
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p->p_scheduler = caller;
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return(OK);
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return(OK);
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@ -10,6 +10,10 @@
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PUBLIC int do_schedule(struct proc * caller, message * m_ptr)
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PUBLIC int do_schedule(struct proc * caller, message * m_ptr)
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{
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{
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struct proc *p;
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struct proc *p;
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int proc_nr;
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if (!isokendpt(m_ptr->SCHEDULING_ENDPOINT, &proc_nr))
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return EINVAL;
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p = proc_addr(_ENDPOINT_P(m_ptr->SCHEDULING_ENDPOINT));
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p = proc_addr(_ENDPOINT_P(m_ptr->SCHEDULING_ENDPOINT));
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