36 lines
754 B
C
36 lines
754 B
C
#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)kill.c 1.1 94/10/31 SMI";
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#endif
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/*
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kill -- system call emulation for 4.2BSD
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last edit: 02-Jan-1985 D A Gwyn
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*/
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#include <errno.h>
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#include <sys/signal.h>
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extern int _kill(), killpg(), getpid();
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int
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kill( pid, sig )
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register int pid; /* process ID or special code */
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register int sig; /* signal to be sent */
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{
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register int retval; /* function return value */
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if ( sig == SIGKILL && pid == 1 /* undocumented kernel check */
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) {
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errno = EINVAL; /* kernel would've allowed it */
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return -1;
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}
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if ( pid < -1 )
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return killpg( -pid, sig );
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else if ( (retval = _kill( pid, sig )) == 0 && pid == -1 )
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return _kill( getpid(), sig );
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else
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return retval;
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}
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