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signalnumber.c revision 1.2 
      1 /* $NetBSD: signalnumber.c,v 1.2 2018/01/04 20:57:29 kamil Exp $ */
      2 
      3 /*
      4  * Software available to all and sundry without limitations
      5  * but without warranty of fitness for any purpose whatever.
      6  *
      7  * Licensed for any use, including redistribution in source
      8  * and binary forms, with or without modifications, subject
      9  * the following agreement:
     10  *
     11  * Licensee agrees to indemnify licensor, and distributor, for
     12  * the full amount of any any claim made by the licensee against
     13  * the licensor or distributor, for any action that results from
     14  * any use or redistribution of this software, plus any costs
     15  * incurred by licensor or distributor resulting from that claim.
     16  *
     17  * This licence must be retained with the software.
     18  */
     19 
     20 #include "namespace.h"
     21 
     22 #include <signal.h>
     23 #include <string.h>
     24 
     25 /*
     26  * signalnumber()
     27  *
     28  *	Converts the signal named "name" to its
     29  *	signal number.
     30  *
     31  *	"name" can be the signal name with or without
     32  *	the leading "SIG" prefix, and character comparisons
     33  *	are done in a case independent manner.
     34  *	(ie: SIGINT == INT == int == Int == SiGiNt == (etc).)
     35  *
     36  * Returns:
     37  *	0 on error (invalid signal name)
     38  *	otherwise the signal number that corresponds to "name"
     39  */
     40 
     41 int
     42 signalnumber(const char *name)
     43 {
     44 	int i;
     45 
     46 	if (strncasecmp(name, "sig", 3) == 0)
     47 		name += 3;
     48 
     49 	for (i = 1; i < NSIG; ++i)
     50 		if (sys_signame[i] != NULL &&
     51 		    strcasecmp(name, sys_signame[i]) == 0)
     52 			return i;
     53 	return 0;
     54 }
     55