17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*ae46e4c7SMatthew Ahrens * Common Development and Distribution License (the "License").
6*ae46e4c7SMatthew Ahrens * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
217c478bd9Sstevel@tonic-gate /*
22*ae46e4c7SMatthew Ahrens * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
237c478bd9Sstevel@tonic-gate * Use is subject to license terms.
247c478bd9Sstevel@tonic-gate */
257c478bd9Sstevel@tonic-gate
267c478bd9Sstevel@tonic-gate #include <sys/types.h>
277c478bd9Sstevel@tonic-gate #include <sys/cmn_err.h>
287c478bd9Sstevel@tonic-gate #include <sys/systm.h>
297c478bd9Sstevel@tonic-gate #include <sys/varargs.h>
307c478bd9Sstevel@tonic-gate
317c478bd9Sstevel@tonic-gate /*
327c478bd9Sstevel@tonic-gate * SunOS-specific extensions to libc's standard set of string routines.
337c478bd9Sstevel@tonic-gate *
347c478bd9Sstevel@tonic-gate * NOTE: The standard libc string routines are in $SRC/common/util/string.c,
357c478bd9Sstevel@tonic-gate * to facilitate sharing with standalone.
367c478bd9Sstevel@tonic-gate */
377c478bd9Sstevel@tonic-gate
387c478bd9Sstevel@tonic-gate /*
397c478bd9Sstevel@tonic-gate * Historical entry point: remove in Solaris 2.8.
407c478bd9Sstevel@tonic-gate */
417c478bd9Sstevel@tonic-gate char *
vsprintf_len(size_t buflen,char * buf,const char * fmt,va_list args)427c478bd9Sstevel@tonic-gate vsprintf_len(size_t buflen, char *buf, const char *fmt, va_list args)
437c478bd9Sstevel@tonic-gate {
447c478bd9Sstevel@tonic-gate (void) vsnprintf(buf, buflen, fmt, args);
457c478bd9Sstevel@tonic-gate return (buf);
467c478bd9Sstevel@tonic-gate }
477c478bd9Sstevel@tonic-gate
487c478bd9Sstevel@tonic-gate /*
497c478bd9Sstevel@tonic-gate * Historical entry point: remove in Solaris 2.8.
507c478bd9Sstevel@tonic-gate */
517c478bd9Sstevel@tonic-gate /*PRINTFLIKE3*/
527c478bd9Sstevel@tonic-gate char *
sprintf_len(size_t buflen,char * buf,const char * fmt,...)537c478bd9Sstevel@tonic-gate sprintf_len(size_t buflen, char *buf, const char *fmt, ...)
547c478bd9Sstevel@tonic-gate {
557c478bd9Sstevel@tonic-gate va_list args;
567c478bd9Sstevel@tonic-gate
577c478bd9Sstevel@tonic-gate va_start(args, fmt);
587c478bd9Sstevel@tonic-gate (void) vsnprintf(buf, buflen, fmt, args);
597c478bd9Sstevel@tonic-gate va_end(args);
607c478bd9Sstevel@tonic-gate
617c478bd9Sstevel@tonic-gate return (buf);
627c478bd9Sstevel@tonic-gate }
637c478bd9Sstevel@tonic-gate
647c478bd9Sstevel@tonic-gate /*
657c478bd9Sstevel@tonic-gate * Simple-minded conversion of a long into a null-terminated character
667c478bd9Sstevel@tonic-gate * string. Caller must ensure there's enough space to hold the result.
677c478bd9Sstevel@tonic-gate */
687c478bd9Sstevel@tonic-gate void
numtos(unsigned long num,char * s)697c478bd9Sstevel@tonic-gate numtos(unsigned long num, char *s)
707c478bd9Sstevel@tonic-gate {
717c478bd9Sstevel@tonic-gate char prbuf[40];
727c478bd9Sstevel@tonic-gate
737c478bd9Sstevel@tonic-gate char *cp = prbuf;
747c478bd9Sstevel@tonic-gate
757c478bd9Sstevel@tonic-gate do {
767c478bd9Sstevel@tonic-gate *cp++ = "0123456789"[num % 10];
777c478bd9Sstevel@tonic-gate num /= 10;
787c478bd9Sstevel@tonic-gate } while (num);
797c478bd9Sstevel@tonic-gate
807c478bd9Sstevel@tonic-gate do {
817c478bd9Sstevel@tonic-gate *s++ = *--cp;
827c478bd9Sstevel@tonic-gate } while (cp > prbuf);
837c478bd9Sstevel@tonic-gate *s = '\0';
847c478bd9Sstevel@tonic-gate }
857c478bd9Sstevel@tonic-gate
867c478bd9Sstevel@tonic-gate /*
877c478bd9Sstevel@tonic-gate * Returns the integer value of the string of decimal numeric
887c478bd9Sstevel@tonic-gate * chars beginning at **str. Does no overflow checking.
897c478bd9Sstevel@tonic-gate * Note: updates *str to point at the last character examined.
907c478bd9Sstevel@tonic-gate */
917c478bd9Sstevel@tonic-gate int
stoi(char ** str)927c478bd9Sstevel@tonic-gate stoi(char **str)
937c478bd9Sstevel@tonic-gate {
947c478bd9Sstevel@tonic-gate char *p = *str;
957c478bd9Sstevel@tonic-gate int n;
967c478bd9Sstevel@tonic-gate int c;
977c478bd9Sstevel@tonic-gate
987c478bd9Sstevel@tonic-gate for (n = 0; (c = *p) >= '0' && c <= '9'; p++) {
997c478bd9Sstevel@tonic-gate n = n * 10 + c - '0';
1007c478bd9Sstevel@tonic-gate }
1017c478bd9Sstevel@tonic-gate *str = p;
1027c478bd9Sstevel@tonic-gate return (n);
1037c478bd9Sstevel@tonic-gate }
1047c478bd9Sstevel@tonic-gate
1057c478bd9Sstevel@tonic-gate /*
1067c478bd9Sstevel@tonic-gate * Like strrchr(), except
1077c478bd9Sstevel@tonic-gate * (a) it takes a maximum length for the string to be searched, and
1087c478bd9Sstevel@tonic-gate * (b) if the string ends with a null, it is not considered part of the string.
1097c478bd9Sstevel@tonic-gate */
1107c478bd9Sstevel@tonic-gate char *
strnrchr(const char * sp,int c,size_t n)1117c478bd9Sstevel@tonic-gate strnrchr(const char *sp, int c, size_t n)
1127c478bd9Sstevel@tonic-gate {
1137c478bd9Sstevel@tonic-gate const char *r = 0;
1147c478bd9Sstevel@tonic-gate
1157c478bd9Sstevel@tonic-gate while (n-- > 0 && *sp) {
1167c478bd9Sstevel@tonic-gate if (*sp == c)
1177c478bd9Sstevel@tonic-gate r = sp;
1187c478bd9Sstevel@tonic-gate sp++;
1197c478bd9Sstevel@tonic-gate }
1207c478bd9Sstevel@tonic-gate
1217c478bd9Sstevel@tonic-gate return ((char *)r);
1227c478bd9Sstevel@tonic-gate }
1237c478bd9Sstevel@tonic-gate
1247c478bd9Sstevel@tonic-gate /*
1257c478bd9Sstevel@tonic-gate * NOTE: These routines aren't shared with standalone because the DDI mandates
1267c478bd9Sstevel@tonic-gate * that they return the buffer rather than its length.
1277c478bd9Sstevel@tonic-gate */
1287c478bd9Sstevel@tonic-gate /*PRINTFLIKE2*/
1297c478bd9Sstevel@tonic-gate char *
sprintf(char * buf,const char * fmt,...)1307c478bd9Sstevel@tonic-gate sprintf(char *buf, const char *fmt, ...)
1317c478bd9Sstevel@tonic-gate {
1327c478bd9Sstevel@tonic-gate va_list args;
1337c478bd9Sstevel@tonic-gate
1347c478bd9Sstevel@tonic-gate va_start(args, fmt);
1357c478bd9Sstevel@tonic-gate (void) vsnprintf(buf, INT_MAX, fmt, args);
1367c478bd9Sstevel@tonic-gate va_end(args);
1377c478bd9Sstevel@tonic-gate
1387c478bd9Sstevel@tonic-gate return (buf);
1397c478bd9Sstevel@tonic-gate }
1407c478bd9Sstevel@tonic-gate
1417c478bd9Sstevel@tonic-gate char *
vsprintf(char * buf,const char * fmt,va_list args)1427c478bd9Sstevel@tonic-gate vsprintf(char *buf, const char *fmt, va_list args)
1437c478bd9Sstevel@tonic-gate {
1447c478bd9Sstevel@tonic-gate (void) vsnprintf(buf, INT_MAX, fmt, args);
1457c478bd9Sstevel@tonic-gate return (buf);
1467c478bd9Sstevel@tonic-gate }
147*ae46e4c7SMatthew Ahrens
148*ae46e4c7SMatthew Ahrens /*
149*ae46e4c7SMatthew Ahrens * Do not change the length of the returned string; it must be freed
150*ae46e4c7SMatthew Ahrens * with strfree().
151*ae46e4c7SMatthew Ahrens */
152*ae46e4c7SMatthew Ahrens char *
kmem_asprintf(const char * fmt,...)153*ae46e4c7SMatthew Ahrens kmem_asprintf(const char *fmt, ...)
154*ae46e4c7SMatthew Ahrens {
155*ae46e4c7SMatthew Ahrens int size;
156*ae46e4c7SMatthew Ahrens va_list adx;
157*ae46e4c7SMatthew Ahrens char *buf;
158*ae46e4c7SMatthew Ahrens
159*ae46e4c7SMatthew Ahrens va_start(adx, fmt);
160*ae46e4c7SMatthew Ahrens size = vsnprintf(NULL, 0, fmt, adx) + 1;
161*ae46e4c7SMatthew Ahrens va_end(adx);
162*ae46e4c7SMatthew Ahrens
163*ae46e4c7SMatthew Ahrens buf = kmem_alloc(size, KM_SLEEP);
164*ae46e4c7SMatthew Ahrens
165*ae46e4c7SMatthew Ahrens va_start(adx, fmt);
166*ae46e4c7SMatthew Ahrens size = vsnprintf(buf, size, fmt, adx);
167*ae46e4c7SMatthew Ahrens va_end(adx);
168*ae46e4c7SMatthew Ahrens
169*ae46e4c7SMatthew Ahrens return (buf);
170*ae46e4c7SMatthew Ahrens }
171