51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/* The kernel call implemented in this file:
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* m_type: SYS_ABORT
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*
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* The parameters for this kernel call are:
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* m1_i1: ABRT_HOW (how to abort, possibly fetch monitor params)
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* m1_i2: ABRT_MON_ENDPT (proc nr to get monitor params from)
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* m1_i3: ABRT_MON_LEN (length of monitor params)
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* m1_p1: ABRT_MON_ADDR (virtual address of params)
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*/
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#include "kernel/system.h"
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#include <unistd.h>
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#if USE_ABORT
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/*===========================================================================*
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* do_abort *
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*===========================================================================*/
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PUBLIC int do_abort(struct proc * caller, message * m_ptr)
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{
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/* Handle sys_abort. MINIX is unable to continue. This can originate e.g.
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* in the PM (normal abort) or TTY (after CTRL-ALT-DEL).
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*/
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int how = m_ptr->ABRT_HOW;
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/* See if the monitor is to run the specified instructions. */
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if (how == RBT_MONITOR) {
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int p;
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static char paramsbuffer[512];
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int len;
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len = MIN(m_ptr->ABRT_MON_LEN, sizeof(paramsbuffer)-1);
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if((p=data_copy(m_ptr->ABRT_MON_ENDPT, (vir_bytes) m_ptr->ABRT_MON_ADDR,
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KERNEL, (vir_bytes) paramsbuffer, len)) != OK) {
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return p;
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}
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paramsbuffer[len] = '\0';
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/* Parameters seem ok, copy them and prepare shutting down. */
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if((p = arch_set_params(paramsbuffer, len+1)) != OK)
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return p;
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}
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/* Now prepare to shutdown MINIX. */
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prepare_shutdown(how);
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return(OK); /* pro-forma (really EDISASTER) */
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}
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#endif /* USE_ABORT */
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