198c976f7e
that passes signal map along. This mechanisms is also used for nonuser signals like SIGKMESS, SIGKSTOP, SIGKSIG. Revised comments of many system call handlers. Renamed setpriority to nice.
47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
/* The system 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 system 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_PROC (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 "../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(m_ptr)
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message *m_ptr; /* pointer to request message */
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{
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/* Handle sys_abort. MINIX is unable to continue. This can originate in the
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* PM (normal abort or panic) or FS (panic), or TTY (user issued CTRL-ALT-DEL
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* or ESC after debugging dumps).
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*/
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int how = m_ptr->ABRT_HOW;
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if (how == RBT_MONITOR) {
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/* The monitor is to run the specified instructions. */
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int proc_nr = m_ptr->ABRT_MON_PROC;
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int length = m_ptr->ABRT_MON_LEN + 1;
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vir_bytes src_vir = (vir_bytes) m_ptr->ABRT_MON_ADDR;
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phys_bytes src_phys = numap_local(proc_nr, src_vir, length);
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/* Validate length and address of shutdown code before copying. */
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if (length > kinfo.params_size || src_phys == 0)
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phys_copy(vir2phys("delay;boot"), kinfo.params_base, 11);
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else
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phys_copy(src_phys, kinfo.params_base, (phys_bytes) length);
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}
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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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