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Kernel: fix faulty trap check

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This commit is contained in:
David van Moolenbroek 2009-11-28 13:15:07 +00:00
parent e06e85b511
commit 6c6e1db676
1 changed files with 17 additions and 1 deletions
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18
kernel/proc.c
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@ -405,7 +405,10 @@ long bit_map; /* notification event set or flags */
return(ETRAPDENIED); /* trap denied by mask or kernel */
}
if ((iskerneln(src_dst_p) && call_nr != SENDREC && call_nr != RECEIVE)) {
/* SENDA has no src_dst value here, so this check is in mini_senda() as well.
*/
if (call_nr != SENDREC && call_nr != RECEIVE && call_nr != SENDA &&
iskerneln(src_dst_p)) {
#if DEBUG_ENABLE_IPC_WARNINGS
kprintf("sys_call: trap %d not allowed, caller %d, src_dst %d\n",
call_nr, proc_nr(caller_ptr), src_dst_e);
@ -915,6 +918,19 @@ size_t size;
continue;
}
if (iskerneln(dst_p))
{
/* Asynchronous sends to the kernel are not allowed */
tabent.result= ECALLDENIED;
A_INSERT(i, result);
tabent.flags= flags | AMF_DONE;
A_INSERT(i, flags);
if (flags & AMF_NOTIFY)
do_notify= 1;
continue;
}
if (!may_send_to(caller_ptr, dst_p))
{
/* Send denied by IPC mask */