7e73260cf5
told to kernel
- makes VM ask the kernel if a certain process is allowed
to map in a range of physical memory (VM rounds it to page
boundaries afterwards - but it's impossible to map anything
smaller otherwise so I assume this is safe, i.e. there won't
be anything else in that page; certainly no regular memory)
- VM permission check cleanup (no more hardcoded calls, less
hardcoded logic, more readable main loop), a loose end left
by GQ
- remove do_copy warning, as the ipc server triggers this but
it's no more harmful than the special cases already excluded
explicitly (VFS, PM, etc).
57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
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#define _SYSTEM 1
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#define VERBOSE 0
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#include <minix/callnr.h>
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#include <minix/com.h>
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#include <minix/config.h>
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#include <minix/const.h>
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#include <minix/ds.h>
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#include <minix/endpoint.h>
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#include <minix/keymap.h>
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#include <minix/minlib.h>
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#include <minix/type.h>
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#include <minix/ipc.h>
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#include <minix/sysutil.h>
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#include <minix/syslib.h>
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#include <minix/safecopies.h>
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#include <minix/bitmap.h>
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#include <errno.h>
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#include <string.h>
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#include <env.h>
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#include <stdio.h>
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#include "glo.h"
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#include "proto.h"
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#include "util.h"
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/*===========================================================================*
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* do_rs_set_priv *
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*===========================================================================*/
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PUBLIC int do_rs_set_priv(message *m)
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{
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int r, n, nr;
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struct vmproc *vmp;
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nr = m->VM_RS_NR;
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if ((r = vm_isokendpt(nr, &n)) != OK) {
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printf("do_rs_set_priv: message from strange source %d\n", nr);
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return EINVAL;
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}
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vmp = &vmproc[n];
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if (m->VM_RS_BUF) {
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r = sys_datacopy(m->m_source, (vir_bytes) m->VM_RS_BUF,
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SELF, (vir_bytes) vmp->vm_call_priv_mask,
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sizeof(vmp->vm_call_priv_mask));
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if (r != OK)
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return r;
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}
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return OK;
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}
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