36 lines
813 B
C
36 lines
813 B
C
/* The kernel call implemented in this file:
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* m_type: SYS_SETGRANT
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*
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* The parameters for this kernel call are:
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* SG_ADDR address of grant table in own address space
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* SG_SIZE number of entries
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*/
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#include "../system.h"
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#include <minix/safecopies.h>
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/*===========================================================================*
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* do_setgrant *
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*===========================================================================*/
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PUBLIC int do_setgrant(m_ptr)
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message *m_ptr;
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{
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struct proc *rp;
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int r;
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/* Who wants to set a parameter? */
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rp = proc_addr(who_p);
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/* Copy grant table set in priv. struct. */
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if ((rp->p_rts_flags & NO_PRIV) || !(priv(rp))) {
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r = EPERM;
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} else {
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_K_SET_GRANT_TABLE(rp,
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(vir_bytes) m_ptr->SG_ADDR,
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m_ptr->SG_SIZE);
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r = OK;
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}
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return r;
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}
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