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 5049fa28aSdr * Common Development and Distribution License (the "License"). 6049fa28aSdr * 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 /* 227637daddSmyers * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 24237b1f31SPatrick Mooney * Copyright 2014 Joyent, Inc. All rights reserved. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 27*3c5da275SMatthew Ahrens /* 28*3c5da275SMatthew Ahrens * Copyright (c) 2016 by Delphix. All rights reserved. 29*3c5da275SMatthew Ahrens */ 30*3c5da275SMatthew Ahrens 317c478bd9Sstevel@tonic-gate /* 327c478bd9Sstevel@tonic-gate * Implementations of the functions described in vsnprintf(3C) and string(3C), 337c478bd9Sstevel@tonic-gate * for use by the kernel, the standalone, and kmdb. Unless otherwise specified, 347c478bd9Sstevel@tonic-gate * these functions match the section 3C manpages. 357c478bd9Sstevel@tonic-gate */ 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate #include <sys/types.h> 384870e0a7SRichard PALO #include <sys/null.h> 397c478bd9Sstevel@tonic-gate #include <sys/varargs.h> 40ae115bc7Smrj 41ae115bc7Smrj #if defined(_KERNEL) 427c478bd9Sstevel@tonic-gate #include <sys/systm.h> 437c478bd9Sstevel@tonic-gate #include <sys/debug.h> 44ae115bc7Smrj #elif !defined(_BOOT) 45ae115bc7Smrj #include <string.h> 46ae115bc7Smrj #endif 47ae115bc7Smrj 48ae115bc7Smrj #include "memcpy.h" 49ae115bc7Smrj #include "string.h" 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate /* 52ae115bc7Smrj * We don't need these for x86 boot or kmdb. 537c478bd9Sstevel@tonic-gate */ 54ae115bc7Smrj #if !defined(_KMDB) && (!defined(_BOOT) || defined(__sparc)) 557c478bd9Sstevel@tonic-gate 567c478bd9Sstevel@tonic-gate #define ADDCHAR(c) if (bufp++ - buf < buflen) bufp[-1] = (c) 577c478bd9Sstevel@tonic-gate 587c478bd9Sstevel@tonic-gate /* 597c478bd9Sstevel@tonic-gate * Given a buffer 'buf' of size 'buflen', render as much of the string 607c478bd9Sstevel@tonic-gate * described by <fmt, args> as possible. The string will always be 617c478bd9Sstevel@tonic-gate * null-terminated, so the maximum string length is 'buflen - 1'. 627c478bd9Sstevel@tonic-gate * Returns the number of bytes that would be necessary to render the 637c478bd9Sstevel@tonic-gate * entire string, not including null terminator (just like vsnprintf(3S)). 647c478bd9Sstevel@tonic-gate * To determine buffer size in advance, use vsnprintf(NULL, 0, fmt, args) + 1. 657c478bd9Sstevel@tonic-gate * 667c478bd9Sstevel@tonic-gate * There is no support for floating point, and the C locale is assumed. 677c478bd9Sstevel@tonic-gate */ 687c478bd9Sstevel@tonic-gate size_t 697c478bd9Sstevel@tonic-gate vsnprintf(char *buf, size_t buflen, const char *fmt, va_list aargs) 707c478bd9Sstevel@tonic-gate { 717c478bd9Sstevel@tonic-gate uint64_t ul, tmp; 727c478bd9Sstevel@tonic-gate char *bufp = buf; /* current buffer pointer */ 73186507a7Smyers int pad, width, base, sign, c, num; 74186507a7Smyers int prec, h_count, l_count, dot_count; 75186507a7Smyers int pad_count, transfer_count, left_align; 767c478bd9Sstevel@tonic-gate char *digits, *sp, *bs; 777c478bd9Sstevel@tonic-gate char numbuf[65]; /* sufficient for a 64-bit binary value */ 787c478bd9Sstevel@tonic-gate va_list args; 797c478bd9Sstevel@tonic-gate 807c478bd9Sstevel@tonic-gate /* 817c478bd9Sstevel@tonic-gate * Make a copy so that all our callers don't have to make a copy 827c478bd9Sstevel@tonic-gate */ 837c478bd9Sstevel@tonic-gate va_copy(args, aargs); 847c478bd9Sstevel@tonic-gate 857c478bd9Sstevel@tonic-gate if ((ssize_t)buflen < 0) 867c478bd9Sstevel@tonic-gate buflen = 0; 877c478bd9Sstevel@tonic-gate 887c478bd9Sstevel@tonic-gate while ((c = *fmt++) != '\0') { 897c478bd9Sstevel@tonic-gate if (c != '%') { 907c478bd9Sstevel@tonic-gate ADDCHAR(c); 917c478bd9Sstevel@tonic-gate continue; 927c478bd9Sstevel@tonic-gate } 937c478bd9Sstevel@tonic-gate 94186507a7Smyers width = prec = 0; 95186507a7Smyers left_align = base = sign = 0; 96186507a7Smyers h_count = l_count = dot_count = 0; 97186507a7Smyers pad = ' '; 98186507a7Smyers digits = "0123456789abcdef"; 99186507a7Smyers next_fmt: 1007c478bd9Sstevel@tonic-gate if ((c = *fmt++) == '\0') 1017c478bd9Sstevel@tonic-gate break; 1027c478bd9Sstevel@tonic-gate 1037c478bd9Sstevel@tonic-gate if (c >= 'A' && c <= 'Z') { 1047c478bd9Sstevel@tonic-gate c += 'a' - 'A'; 1057c478bd9Sstevel@tonic-gate digits = "0123456789ABCDEF"; 1067c478bd9Sstevel@tonic-gate } 1077c478bd9Sstevel@tonic-gate 1087c478bd9Sstevel@tonic-gate switch (c) { 109186507a7Smyers case '-': 110186507a7Smyers left_align++; 111186507a7Smyers goto next_fmt; 112186507a7Smyers case '0': 113186507a7Smyers if (dot_count == 0) 114186507a7Smyers pad = '0'; 115186507a7Smyers /*FALLTHROUGH*/ 116186507a7Smyers case '1': 117186507a7Smyers case '2': 118186507a7Smyers case '3': 119186507a7Smyers case '4': 120186507a7Smyers case '5': 121186507a7Smyers case '6': 122186507a7Smyers case '7': 123186507a7Smyers case '8': 124186507a7Smyers case '9': 125186507a7Smyers num = 0; 126186507a7Smyers for (;;) { 127186507a7Smyers num = 10 * num + c - '0'; 128186507a7Smyers c = *fmt; 129186507a7Smyers if (c < '0' || c > '9') 130186507a7Smyers break; 131186507a7Smyers else 132186507a7Smyers fmt++; 133186507a7Smyers } 134186507a7Smyers if (dot_count > 0) 135186507a7Smyers prec = num; 136186507a7Smyers else 137186507a7Smyers width = num; 138186507a7Smyers 139186507a7Smyers goto next_fmt; 140186507a7Smyers case '.': 141186507a7Smyers dot_count++; 142186507a7Smyers goto next_fmt; 143186507a7Smyers case '*': 144049fa28aSdr if (dot_count > 0) 145049fa28aSdr prec = (int)va_arg(args, int); 146049fa28aSdr else 147049fa28aSdr width = (int)va_arg(args, int); 148186507a7Smyers goto next_fmt; 149186507a7Smyers case 'l': 150186507a7Smyers l_count++; 151186507a7Smyers goto next_fmt; 152186507a7Smyers case 'h': 153186507a7Smyers h_count++; 154186507a7Smyers goto next_fmt; 1557c478bd9Sstevel@tonic-gate case 'd': 1567c478bd9Sstevel@tonic-gate sign = 1; 1577c478bd9Sstevel@tonic-gate /*FALLTHROUGH*/ 1587c478bd9Sstevel@tonic-gate case 'u': 1597c478bd9Sstevel@tonic-gate base = 10; 1607c478bd9Sstevel@tonic-gate break; 1617c478bd9Sstevel@tonic-gate case 'p': 162186507a7Smyers l_count = 1; 1637c478bd9Sstevel@tonic-gate /*FALLTHROUGH*/ 1647c478bd9Sstevel@tonic-gate case 'x': 1657c478bd9Sstevel@tonic-gate base = 16; 1667c478bd9Sstevel@tonic-gate break; 1677c478bd9Sstevel@tonic-gate case 'o': 1687c478bd9Sstevel@tonic-gate base = 8; 1697c478bd9Sstevel@tonic-gate break; 1707c478bd9Sstevel@tonic-gate case 'b': 171186507a7Smyers l_count = 0; 1727c478bd9Sstevel@tonic-gate base = 1; 1737c478bd9Sstevel@tonic-gate break; 1747c478bd9Sstevel@tonic-gate case 'c': 175fc77c268Smyers c = (char)va_arg(args, int); 176186507a7Smyers ADDCHAR(c); 1777c478bd9Sstevel@tonic-gate break; 1787c478bd9Sstevel@tonic-gate case 's': 1797c478bd9Sstevel@tonic-gate sp = va_arg(args, char *); 180186507a7Smyers if (sp == NULL) { 1817c478bd9Sstevel@tonic-gate sp = "<null string>"; 182186507a7Smyers /* avoid truncation */ 183186507a7Smyers prec = strlen(sp); 184186507a7Smyers } 185186507a7Smyers /* 186186507a7Smyers * Handle simple case specially to avoid 187186507a7Smyers * performance hit of strlen() 188186507a7Smyers */ 189186507a7Smyers if (prec == 0 && width == 0) { 190186507a7Smyers while ((c = *sp++) != 0) 191186507a7Smyers ADDCHAR(c); 192186507a7Smyers break; 193186507a7Smyers } 194186507a7Smyers if (prec > 0) { 1957637daddSmyers transfer_count = strnlen(sp, prec); 196186507a7Smyers /* widen field if too narrow */ 197186507a7Smyers if (prec > width) 198186507a7Smyers width = prec; 1997637daddSmyers } else 2007637daddSmyers transfer_count = strlen(sp); 201186507a7Smyers if (width > transfer_count) 202186507a7Smyers pad_count = width - transfer_count; 203186507a7Smyers else 204186507a7Smyers pad_count = 0; 205186507a7Smyers while ((!left_align) && (pad_count-- > 0)) 206186507a7Smyers ADDCHAR(' '); 207186507a7Smyers /* ADDCHAR() evaluates arg at most once */ 208186507a7Smyers while (transfer_count-- > 0) 209186507a7Smyers ADDCHAR(*sp++); 210186507a7Smyers while ((left_align) && (pad_count-- > 0)) 211186507a7Smyers ADDCHAR(' '); 2127c478bd9Sstevel@tonic-gate break; 2137c478bd9Sstevel@tonic-gate case '%': 2147c478bd9Sstevel@tonic-gate ADDCHAR('%'); 2157c478bd9Sstevel@tonic-gate break; 2167c478bd9Sstevel@tonic-gate } 2177c478bd9Sstevel@tonic-gate 2187c478bd9Sstevel@tonic-gate if (base == 0) 2197c478bd9Sstevel@tonic-gate continue; 2207c478bd9Sstevel@tonic-gate 221186507a7Smyers if (h_count == 0 && l_count == 0) 222186507a7Smyers if (sign) 223186507a7Smyers ul = (int64_t)va_arg(args, int); 224186507a7Smyers else 225186507a7Smyers ul = (int64_t)va_arg(args, unsigned int); 226186507a7Smyers else if (l_count > 1) 227186507a7Smyers if (sign) 228186507a7Smyers ul = (int64_t)va_arg(args, int64_t); 229186507a7Smyers else 230186507a7Smyers ul = (int64_t)va_arg(args, uint64_t); 231186507a7Smyers else if (l_count > 0) 232186507a7Smyers if (sign) 233186507a7Smyers ul = (int64_t)va_arg(args, long); 234186507a7Smyers else 235186507a7Smyers ul = (int64_t)va_arg(args, unsigned long); 236186507a7Smyers else if (h_count > 1) 237186507a7Smyers if (sign) 238fc77c268Smyers ul = (int64_t)((char)va_arg(args, int)); 239186507a7Smyers else 240fc77c268Smyers ul = (int64_t)((unsigned char)va_arg(args, 241fc77c268Smyers int)); 242186507a7Smyers else if (h_count > 0) 243186507a7Smyers if (sign) 244fc77c268Smyers ul = (int64_t)((short)va_arg(args, int)); 245186507a7Smyers else 246fc77c268Smyers ul = (int64_t)((unsigned short)va_arg(args, 247fc77c268Smyers int)); 2487c478bd9Sstevel@tonic-gate 2497c478bd9Sstevel@tonic-gate if (sign && (int64_t)ul < 0) 2507c478bd9Sstevel@tonic-gate ul = -ul; 2517c478bd9Sstevel@tonic-gate else 2527c478bd9Sstevel@tonic-gate sign = 0; 2537c478bd9Sstevel@tonic-gate 2547c478bd9Sstevel@tonic-gate if (c == 'b') { 2557c478bd9Sstevel@tonic-gate bs = va_arg(args, char *); 2567c478bd9Sstevel@tonic-gate base = *bs++; 2577c478bd9Sstevel@tonic-gate } 2587c478bd9Sstevel@tonic-gate 259186507a7Smyers /* avoid repeated division if width is 0 */ 260186507a7Smyers if (width > 0) { 261186507a7Smyers tmp = ul; 262186507a7Smyers do { 263186507a7Smyers width--; 264186507a7Smyers } while ((tmp /= base) != 0); 265186507a7Smyers } 2667c478bd9Sstevel@tonic-gate 2677c478bd9Sstevel@tonic-gate if (sign && pad == '0') 2687c478bd9Sstevel@tonic-gate ADDCHAR('-'); 269237b1f31SPatrick Mooney while ((!left_align) && (width-- > sign)) 2707c478bd9Sstevel@tonic-gate ADDCHAR(pad); 2717c478bd9Sstevel@tonic-gate if (sign && pad == ' ') 2727c478bd9Sstevel@tonic-gate ADDCHAR('-'); 2737c478bd9Sstevel@tonic-gate 2747c478bd9Sstevel@tonic-gate sp = numbuf; 2757c478bd9Sstevel@tonic-gate tmp = ul; 2767c478bd9Sstevel@tonic-gate do { 2777c478bd9Sstevel@tonic-gate *sp++ = digits[tmp % base]; 2787c478bd9Sstevel@tonic-gate } while ((tmp /= base) != 0); 2797c478bd9Sstevel@tonic-gate 2807c478bd9Sstevel@tonic-gate while (sp > numbuf) { 2817c478bd9Sstevel@tonic-gate sp--; 2827c478bd9Sstevel@tonic-gate ADDCHAR(*sp); 2837c478bd9Sstevel@tonic-gate } 2847c478bd9Sstevel@tonic-gate 285237b1f31SPatrick Mooney /* add left-alignment padding */ 286237b1f31SPatrick Mooney while (width-- > sign) 287237b1f31SPatrick Mooney ADDCHAR(' '); 288237b1f31SPatrick Mooney 2897c478bd9Sstevel@tonic-gate if (c == 'b' && ul != 0) { 2907c478bd9Sstevel@tonic-gate int any = 0; 2917c478bd9Sstevel@tonic-gate c = *bs++; 2927c478bd9Sstevel@tonic-gate while (c != 0) { 2937c478bd9Sstevel@tonic-gate if (ul & (1 << (c - 1))) { 2947c478bd9Sstevel@tonic-gate if (any++ == 0) 2957c478bd9Sstevel@tonic-gate ADDCHAR('<'); 2967c478bd9Sstevel@tonic-gate while ((c = *bs++) >= 32) 2977c478bd9Sstevel@tonic-gate ADDCHAR(c); 2987c478bd9Sstevel@tonic-gate ADDCHAR(','); 2997c478bd9Sstevel@tonic-gate } else { 3007c478bd9Sstevel@tonic-gate while ((c = *bs++) >= 32) 3017c478bd9Sstevel@tonic-gate continue; 3027c478bd9Sstevel@tonic-gate } 3037c478bd9Sstevel@tonic-gate } 3047c478bd9Sstevel@tonic-gate if (any) { 3057c478bd9Sstevel@tonic-gate bufp--; 3067c478bd9Sstevel@tonic-gate ADDCHAR('>'); 3077c478bd9Sstevel@tonic-gate } 3087c478bd9Sstevel@tonic-gate } 3097c478bd9Sstevel@tonic-gate } 3107c478bd9Sstevel@tonic-gate if (bufp - buf < buflen) 3117c478bd9Sstevel@tonic-gate bufp[0] = c; 3127c478bd9Sstevel@tonic-gate else if (buflen != 0) 3137c478bd9Sstevel@tonic-gate buf[buflen - 1] = c; 3147c478bd9Sstevel@tonic-gate 3157c478bd9Sstevel@tonic-gate va_end(args); 3167c478bd9Sstevel@tonic-gate 3177c478bd9Sstevel@tonic-gate return (bufp - buf); 3187c478bd9Sstevel@tonic-gate } 3197c478bd9Sstevel@tonic-gate 320*3c5da275SMatthew Ahrens /*PRINTFLIKE3*/ 3217c478bd9Sstevel@tonic-gate size_t 3227c478bd9Sstevel@tonic-gate snprintf(char *buf, size_t buflen, const char *fmt, ...) 3237c478bd9Sstevel@tonic-gate { 3247c478bd9Sstevel@tonic-gate va_list args; 3257c478bd9Sstevel@tonic-gate 3267c478bd9Sstevel@tonic-gate va_start(args, fmt); 3277c478bd9Sstevel@tonic-gate buflen = vsnprintf(buf, buflen, fmt, args); 3287c478bd9Sstevel@tonic-gate va_end(args); 3297c478bd9Sstevel@tonic-gate 3307c478bd9Sstevel@tonic-gate return (buflen); 3317c478bd9Sstevel@tonic-gate } 3327c478bd9Sstevel@tonic-gate 333ae115bc7Smrj #if defined(_BOOT) && defined(__sparc) 3347c478bd9Sstevel@tonic-gate /* 3357c478bd9Sstevel@tonic-gate * The sprintf() and vsprintf() routines aren't shared with the kernel because 3367c478bd9Sstevel@tonic-gate * the DDI mandates that they return the buffer rather than its length. 3377c478bd9Sstevel@tonic-gate */ 3387c478bd9Sstevel@tonic-gate /*PRINTFLIKE2*/ 3397c478bd9Sstevel@tonic-gate int 3407c478bd9Sstevel@tonic-gate sprintf(char *buf, const char *fmt, ...) 3417c478bd9Sstevel@tonic-gate { 3427c478bd9Sstevel@tonic-gate va_list args; 3437c478bd9Sstevel@tonic-gate 3447c478bd9Sstevel@tonic-gate va_start(args, fmt); 3457c478bd9Sstevel@tonic-gate (void) vsnprintf(buf, INT_MAX, fmt, args); 3467c478bd9Sstevel@tonic-gate va_end(args); 3477c478bd9Sstevel@tonic-gate 3487c478bd9Sstevel@tonic-gate return (strlen(buf)); 3497c478bd9Sstevel@tonic-gate } 3507c478bd9Sstevel@tonic-gate 3517c478bd9Sstevel@tonic-gate int 3527c478bd9Sstevel@tonic-gate vsprintf(char *buf, const char *fmt, va_list args) 3537c478bd9Sstevel@tonic-gate { 3547c478bd9Sstevel@tonic-gate (void) vsnprintf(buf, INT_MAX, fmt, args); 3557c478bd9Sstevel@tonic-gate return (strlen(buf)); 3567c478bd9Sstevel@tonic-gate } 357ae115bc7Smrj #endif /* _BOOT && __sparc */ 3587c478bd9Sstevel@tonic-gate 359ae115bc7Smrj #endif /* !_KMDB && (!_BOOT || __sparc) */ 3607c478bd9Sstevel@tonic-gate 3617c478bd9Sstevel@tonic-gate char * 3627c478bd9Sstevel@tonic-gate strcat(char *s1, const char *s2) 3637c478bd9Sstevel@tonic-gate { 3647c478bd9Sstevel@tonic-gate char *os1 = s1; 3657c478bd9Sstevel@tonic-gate 3667c478bd9Sstevel@tonic-gate while (*s1++ != '\0') 3677c478bd9Sstevel@tonic-gate ; 3687c478bd9Sstevel@tonic-gate s1--; 3697c478bd9Sstevel@tonic-gate while ((*s1++ = *s2++) != '\0') 3707c478bd9Sstevel@tonic-gate ; 3717c478bd9Sstevel@tonic-gate return (os1); 3727c478bd9Sstevel@tonic-gate } 3737c478bd9Sstevel@tonic-gate 3747c478bd9Sstevel@tonic-gate char * 3757c478bd9Sstevel@tonic-gate strchr(const char *sp, int c) 3767c478bd9Sstevel@tonic-gate { 3777c478bd9Sstevel@tonic-gate do { 3787c478bd9Sstevel@tonic-gate if (*sp == (char)c) 3797c478bd9Sstevel@tonic-gate return ((char *)sp); 3807c478bd9Sstevel@tonic-gate } while (*sp++); 3817c478bd9Sstevel@tonic-gate return (NULL); 3827c478bd9Sstevel@tonic-gate } 3837c478bd9Sstevel@tonic-gate 3847c478bd9Sstevel@tonic-gate int 3857c478bd9Sstevel@tonic-gate strcmp(const char *s1, const char *s2) 3867c478bd9Sstevel@tonic-gate { 3877c478bd9Sstevel@tonic-gate while (*s1 == *s2++) 3887c478bd9Sstevel@tonic-gate if (*s1++ == '\0') 3897c478bd9Sstevel@tonic-gate return (0); 3907c478bd9Sstevel@tonic-gate return (*(unsigned char *)s1 - *(unsigned char *)--s2); 3917c478bd9Sstevel@tonic-gate } 3927c478bd9Sstevel@tonic-gate 3937c478bd9Sstevel@tonic-gate int 3947c478bd9Sstevel@tonic-gate strncmp(const char *s1, const char *s2, size_t n) 3957c478bd9Sstevel@tonic-gate { 3967c478bd9Sstevel@tonic-gate if (s1 == s2) 3977c478bd9Sstevel@tonic-gate return (0); 3987c478bd9Sstevel@tonic-gate n++; 3997c478bd9Sstevel@tonic-gate while (--n != 0 && *s1 == *s2++) 4007c478bd9Sstevel@tonic-gate if (*s1++ == '\0') 4017c478bd9Sstevel@tonic-gate return (0); 4027c478bd9Sstevel@tonic-gate return ((n == 0) ? 0 : *(unsigned char *)s1 - *(unsigned char *)--s2); 4037c478bd9Sstevel@tonic-gate } 4047c478bd9Sstevel@tonic-gate 4057c478bd9Sstevel@tonic-gate static const char charmap[] = { 4067c478bd9Sstevel@tonic-gate '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007', 4077c478bd9Sstevel@tonic-gate '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017', 4087c478bd9Sstevel@tonic-gate '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027', 4097c478bd9Sstevel@tonic-gate '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037', 4107c478bd9Sstevel@tonic-gate '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047', 4117c478bd9Sstevel@tonic-gate '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057', 4127c478bd9Sstevel@tonic-gate '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067', 4137c478bd9Sstevel@tonic-gate '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077', 4147c478bd9Sstevel@tonic-gate '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147', 4157c478bd9Sstevel@tonic-gate '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', 4167c478bd9Sstevel@tonic-gate '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', 4177c478bd9Sstevel@tonic-gate '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137', 4187c478bd9Sstevel@tonic-gate '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147', 4197c478bd9Sstevel@tonic-gate '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', 4207c478bd9Sstevel@tonic-gate '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', 4217c478bd9Sstevel@tonic-gate '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177', 4227c478bd9Sstevel@tonic-gate '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207', 4237c478bd9Sstevel@tonic-gate '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217', 4247c478bd9Sstevel@tonic-gate '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227', 4257c478bd9Sstevel@tonic-gate '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237', 4267c478bd9Sstevel@tonic-gate '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247', 4277c478bd9Sstevel@tonic-gate '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257', 4287c478bd9Sstevel@tonic-gate '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267', 4297c478bd9Sstevel@tonic-gate '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277', 4307c478bd9Sstevel@tonic-gate '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307', 4317c478bd9Sstevel@tonic-gate '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317', 4327c478bd9Sstevel@tonic-gate '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327', 4337c478bd9Sstevel@tonic-gate '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337', 4347c478bd9Sstevel@tonic-gate '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347', 4357c478bd9Sstevel@tonic-gate '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357', 4367c478bd9Sstevel@tonic-gate '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367', 4377c478bd9Sstevel@tonic-gate '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377', 4387c478bd9Sstevel@tonic-gate }; 4397c478bd9Sstevel@tonic-gate 4407c478bd9Sstevel@tonic-gate int 4417c478bd9Sstevel@tonic-gate strcasecmp(const char *s1, const char *s2) 4427c478bd9Sstevel@tonic-gate { 4437c478bd9Sstevel@tonic-gate const unsigned char *cm = (const unsigned char *)charmap; 4447c478bd9Sstevel@tonic-gate const unsigned char *us1 = (const unsigned char *)s1; 4457c478bd9Sstevel@tonic-gate const unsigned char *us2 = (const unsigned char *)s2; 4467c478bd9Sstevel@tonic-gate 4477c478bd9Sstevel@tonic-gate while (cm[*us1] == cm[*us2++]) 4487c478bd9Sstevel@tonic-gate if (*us1++ == '\0') 4497c478bd9Sstevel@tonic-gate return (0); 4507c478bd9Sstevel@tonic-gate return (cm[*us1] - cm[*(us2 - 1)]); 4517c478bd9Sstevel@tonic-gate } 4527c478bd9Sstevel@tonic-gate 4537c478bd9Sstevel@tonic-gate int 4547c478bd9Sstevel@tonic-gate strncasecmp(const char *s1, const char *s2, size_t n) 4557c478bd9Sstevel@tonic-gate { 4567c478bd9Sstevel@tonic-gate const unsigned char *cm = (const unsigned char *)charmap; 4577c478bd9Sstevel@tonic-gate const unsigned char *us1 = (const unsigned char *)s1; 4587c478bd9Sstevel@tonic-gate const unsigned char *us2 = (const unsigned char *)s2; 4597c478bd9Sstevel@tonic-gate 4607c478bd9Sstevel@tonic-gate while (n != 0 && cm[*us1] == cm[*us2++]) { 4617c478bd9Sstevel@tonic-gate if (*us1++ == '\0') 4627c478bd9Sstevel@tonic-gate return (0); 4637c478bd9Sstevel@tonic-gate n--; 4647c478bd9Sstevel@tonic-gate } 4657c478bd9Sstevel@tonic-gate return (n == 0 ? 0 : cm[*us1] - cm[*(us2 - 1)]); 4667c478bd9Sstevel@tonic-gate } 4677c478bd9Sstevel@tonic-gate 4687c478bd9Sstevel@tonic-gate char * 4697c478bd9Sstevel@tonic-gate strcpy(char *s1, const char *s2) 4707c478bd9Sstevel@tonic-gate { 4717c478bd9Sstevel@tonic-gate char *os1 = s1; 4727c478bd9Sstevel@tonic-gate 4737c478bd9Sstevel@tonic-gate while ((*s1++ = *s2++) != '\0') 4747c478bd9Sstevel@tonic-gate ; 4757c478bd9Sstevel@tonic-gate return (os1); 4767c478bd9Sstevel@tonic-gate } 4777c478bd9Sstevel@tonic-gate 4787c478bd9Sstevel@tonic-gate char * 4797c478bd9Sstevel@tonic-gate strncpy(char *s1, const char *s2, size_t n) 4807c478bd9Sstevel@tonic-gate { 4817c478bd9Sstevel@tonic-gate char *os1 = s1; 4827c478bd9Sstevel@tonic-gate 4837c478bd9Sstevel@tonic-gate n++; 4847c478bd9Sstevel@tonic-gate while (--n != 0 && (*s1++ = *s2++) != '\0') 4857c478bd9Sstevel@tonic-gate ; 4867c478bd9Sstevel@tonic-gate if (n != 0) 4877c478bd9Sstevel@tonic-gate while (--n != 0) 4887c478bd9Sstevel@tonic-gate *s1++ = '\0'; 4897c478bd9Sstevel@tonic-gate return (os1); 4907c478bd9Sstevel@tonic-gate } 4917c478bd9Sstevel@tonic-gate 4927c478bd9Sstevel@tonic-gate char * 4937c478bd9Sstevel@tonic-gate strrchr(const char *sp, int c) 4947c478bd9Sstevel@tonic-gate { 4957c478bd9Sstevel@tonic-gate char *r = NULL; 4967c478bd9Sstevel@tonic-gate 4977c478bd9Sstevel@tonic-gate do { 4987c478bd9Sstevel@tonic-gate if (*sp == (char)c) 4997c478bd9Sstevel@tonic-gate r = (char *)sp; 5007c478bd9Sstevel@tonic-gate } while (*sp++); 5017c478bd9Sstevel@tonic-gate 5027c478bd9Sstevel@tonic-gate return (r); 5037c478bd9Sstevel@tonic-gate } 5047c478bd9Sstevel@tonic-gate 5057c478bd9Sstevel@tonic-gate char * 5067c478bd9Sstevel@tonic-gate strstr(const char *as1, const char *as2) 5077c478bd9Sstevel@tonic-gate { 5087c478bd9Sstevel@tonic-gate const char *s1, *s2; 5097c478bd9Sstevel@tonic-gate const char *tptr; 5107c478bd9Sstevel@tonic-gate char c; 5117c478bd9Sstevel@tonic-gate 5127c478bd9Sstevel@tonic-gate s1 = as1; 5137c478bd9Sstevel@tonic-gate s2 = as2; 5147c478bd9Sstevel@tonic-gate 5157c478bd9Sstevel@tonic-gate if (s2 == NULL || *s2 == '\0') 5167c478bd9Sstevel@tonic-gate return ((char *)s1); 5177c478bd9Sstevel@tonic-gate c = *s2; 5187c478bd9Sstevel@tonic-gate 5197c478bd9Sstevel@tonic-gate while (*s1) 5207c478bd9Sstevel@tonic-gate if (*s1++ == c) { 5217c478bd9Sstevel@tonic-gate tptr = s1; 5227c478bd9Sstevel@tonic-gate while ((c = *++s2) == *s1++ && c) 5237c478bd9Sstevel@tonic-gate ; 5247c478bd9Sstevel@tonic-gate if (c == 0) 5257c478bd9Sstevel@tonic-gate return ((char *)tptr - 1); 5267c478bd9Sstevel@tonic-gate s1 = tptr; 5277c478bd9Sstevel@tonic-gate s2 = as2; 5287c478bd9Sstevel@tonic-gate c = *s2; 5297c478bd9Sstevel@tonic-gate } 5307c478bd9Sstevel@tonic-gate 5317c478bd9Sstevel@tonic-gate return (NULL); 5327c478bd9Sstevel@tonic-gate } 5337c478bd9Sstevel@tonic-gate 5347c478bd9Sstevel@tonic-gate char * 5357c478bd9Sstevel@tonic-gate strpbrk(const char *string, const char *brkset) 5367c478bd9Sstevel@tonic-gate { 5377c478bd9Sstevel@tonic-gate const char *p; 5387c478bd9Sstevel@tonic-gate 5397c478bd9Sstevel@tonic-gate do { 5407c478bd9Sstevel@tonic-gate for (p = brkset; *p != '\0' && *p != *string; ++p) 5417c478bd9Sstevel@tonic-gate ; 5427c478bd9Sstevel@tonic-gate if (*p != '\0') 5437c478bd9Sstevel@tonic-gate return ((char *)string); 5447c478bd9Sstevel@tonic-gate } while (*string++); 5457c478bd9Sstevel@tonic-gate 5467c478bd9Sstevel@tonic-gate return (NULL); 5477c478bd9Sstevel@tonic-gate } 5487c478bd9Sstevel@tonic-gate 5497c478bd9Sstevel@tonic-gate char * 5507c478bd9Sstevel@tonic-gate strncat(char *s1, const char *s2, size_t n) 5517c478bd9Sstevel@tonic-gate { 5527c478bd9Sstevel@tonic-gate char *os1 = s1; 5537c478bd9Sstevel@tonic-gate 5547c478bd9Sstevel@tonic-gate n++; 5557c478bd9Sstevel@tonic-gate while (*s1++ != '\0') 5567c478bd9Sstevel@tonic-gate ; 5577c478bd9Sstevel@tonic-gate --s1; 5587c478bd9Sstevel@tonic-gate while ((*s1++ = *s2++) != '\0') { 5597c478bd9Sstevel@tonic-gate if (--n == 0) { 5607c478bd9Sstevel@tonic-gate s1[-1] = '\0'; 5617c478bd9Sstevel@tonic-gate break; 5627c478bd9Sstevel@tonic-gate } 5637c478bd9Sstevel@tonic-gate } 5647c478bd9Sstevel@tonic-gate return (os1); 5657c478bd9Sstevel@tonic-gate } 5667c478bd9Sstevel@tonic-gate 5677c478bd9Sstevel@tonic-gate #if defined(_BOOT) || defined(_KMDB) 5687c478bd9Sstevel@tonic-gate #define bcopy(src, dst, n) (void) memcpy((dst), (src), (n)) 5697c478bd9Sstevel@tonic-gate #endif 5707c478bd9Sstevel@tonic-gate 5717c478bd9Sstevel@tonic-gate size_t 5727c478bd9Sstevel@tonic-gate strlcat(char *dst, const char *src, size_t dstsize) 5737c478bd9Sstevel@tonic-gate { 5747c478bd9Sstevel@tonic-gate char *df = dst; 5757c478bd9Sstevel@tonic-gate size_t left = dstsize; 5767c478bd9Sstevel@tonic-gate size_t l1; 5777c478bd9Sstevel@tonic-gate size_t l2 = strlen(src); 5787c478bd9Sstevel@tonic-gate size_t copied; 5797c478bd9Sstevel@tonic-gate 5807c478bd9Sstevel@tonic-gate while (left-- != 0 && *df != '\0') 5817c478bd9Sstevel@tonic-gate df++; 582ae115bc7Smrj /*LINTED: possible ptrdiff_t overflow*/ 583ae115bc7Smrj l1 = (size_t)(df - dst); 5847c478bd9Sstevel@tonic-gate if (dstsize == l1) 5857c478bd9Sstevel@tonic-gate return (l1 + l2); 5867c478bd9Sstevel@tonic-gate 5877c478bd9Sstevel@tonic-gate copied = l1 + l2 >= dstsize ? dstsize - l1 - 1 : l2; 5887c478bd9Sstevel@tonic-gate bcopy(src, dst + l1, copied); 5897c478bd9Sstevel@tonic-gate dst[l1+copied] = '\0'; 5907c478bd9Sstevel@tonic-gate return (l1 + l2); 5917c478bd9Sstevel@tonic-gate } 5927c478bd9Sstevel@tonic-gate 5937c478bd9Sstevel@tonic-gate size_t 5947c478bd9Sstevel@tonic-gate strlcpy(char *dst, const char *src, size_t len) 5957c478bd9Sstevel@tonic-gate { 5967c478bd9Sstevel@tonic-gate size_t slen = strlen(src); 5977c478bd9Sstevel@tonic-gate size_t copied; 5987c478bd9Sstevel@tonic-gate 5997c478bd9Sstevel@tonic-gate if (len == 0) 6007c478bd9Sstevel@tonic-gate return (slen); 6017c478bd9Sstevel@tonic-gate 6027c478bd9Sstevel@tonic-gate if (slen >= len) 6037c478bd9Sstevel@tonic-gate copied = len - 1; 6047c478bd9Sstevel@tonic-gate else 6057c478bd9Sstevel@tonic-gate copied = slen; 6067c478bd9Sstevel@tonic-gate bcopy(src, dst, copied); 6077c478bd9Sstevel@tonic-gate dst[copied] = '\0'; 6087c478bd9Sstevel@tonic-gate return (slen); 6097c478bd9Sstevel@tonic-gate } 6107c478bd9Sstevel@tonic-gate 6117c478bd9Sstevel@tonic-gate size_t 6127c478bd9Sstevel@tonic-gate strspn(const char *string, const char *charset) 6137c478bd9Sstevel@tonic-gate { 6147c478bd9Sstevel@tonic-gate const char *p, *q; 6157c478bd9Sstevel@tonic-gate 6167c478bd9Sstevel@tonic-gate for (q = string; *q != '\0'; ++q) { 6177c478bd9Sstevel@tonic-gate for (p = charset; *p != '\0' && *p != *q; ++p) 6187c478bd9Sstevel@tonic-gate ; 6197c478bd9Sstevel@tonic-gate if (*p == '\0') 6207c478bd9Sstevel@tonic-gate break; 6217c478bd9Sstevel@tonic-gate } 6227c478bd9Sstevel@tonic-gate 623ae115bc7Smrj /*LINTED: possible ptrdiff_t overflow*/ 624ae115bc7Smrj return ((size_t)(q - string)); 6257c478bd9Sstevel@tonic-gate } 6267c478bd9Sstevel@tonic-gate 627da6c28aaSamw size_t 628da6c28aaSamw strcspn(const char *string, const char *charset) 629da6c28aaSamw { 630da6c28aaSamw const char *p, *q; 631da6c28aaSamw 632da6c28aaSamw for (q = string; *q != '\0'; ++q) { 633da6c28aaSamw for (p = charset; *p != '\0' && *p != *q; ++p) 634da6c28aaSamw ; 635da6c28aaSamw if (*p != '\0') 636da6c28aaSamw break; 637da6c28aaSamw } 638da6c28aaSamw 639da6c28aaSamw /*LINTED E_PTRDIFF_OVERFLOW*/ 640da6c28aaSamw return ((size_t)(q - string)); 641da6c28aaSamw } 642da6c28aaSamw 643da6c28aaSamw /* 644da6c28aaSamw * strsep 645da6c28aaSamw * 646da6c28aaSamw * The strsep() function locates, in the string referenced by *stringp, the 647da6c28aaSamw * first occurrence of any character in the string delim (or the terminating 648da6c28aaSamw * `\0' character) and replaces it with a `\0'. The location of the next 649da6c28aaSamw * character after the delimiter character (or NULL, if the end of the 650da6c28aaSamw * string was reached) is stored in *stringp. The original value of 651da6c28aaSamw * *stringp is returned. 652da6c28aaSamw * 653da6c28aaSamw * If *stringp is initially NULL, strsep() returns NULL. 654b811a51aSVladimir Kotal * 655b811a51aSVladimir Kotal * NOTE: This instance is left for in-kernel use. Libraries and programs 656b811a51aSVladimir Kotal * should use strsep from libc. 657da6c28aaSamw */ 658da6c28aaSamw char * 659da6c28aaSamw strsep(char **stringp, const char *delim) 660da6c28aaSamw { 661da6c28aaSamw char *s; 662da6c28aaSamw const char *spanp; 663da6c28aaSamw int c, sc; 664da6c28aaSamw char *tok; 665da6c28aaSamw 666da6c28aaSamw if ((s = *stringp) == NULL) 667da6c28aaSamw return (NULL); 668da6c28aaSamw 669da6c28aaSamw for (tok = s; ; ) { 670da6c28aaSamw c = *s++; 671da6c28aaSamw spanp = delim; 672da6c28aaSamw do { 673da6c28aaSamw if ((sc = *spanp++) == c) { 674da6c28aaSamw if (c == 0) 675da6c28aaSamw s = NULL; 676da6c28aaSamw else 677da6c28aaSamw s[-1] = 0; 678da6c28aaSamw *stringp = s; 679da6c28aaSamw return (tok); 680da6c28aaSamw } 681da6c28aaSamw } while (sc != 0); 682da6c28aaSamw } 683da6c28aaSamw /* NOTREACHED */ 684da6c28aaSamw } 685da6c28aaSamw 6867c478bd9Sstevel@tonic-gate /* 6877c478bd9Sstevel@tonic-gate * Unless mentioned otherwise, all of the routines below should be added to 6887c478bd9Sstevel@tonic-gate * the Solaris DDI as necessary. For now, only provide them to standalone. 6897c478bd9Sstevel@tonic-gate */ 6907c478bd9Sstevel@tonic-gate #if defined(_BOOT) || defined(_KMDB) 6917c478bd9Sstevel@tonic-gate char * 6927c478bd9Sstevel@tonic-gate strtok(char *string, const char *sepset) 6937c478bd9Sstevel@tonic-gate { 6947c478bd9Sstevel@tonic-gate char *p, *q, *r; 6957c478bd9Sstevel@tonic-gate static char *savept; 6967c478bd9Sstevel@tonic-gate 6977c478bd9Sstevel@tonic-gate /* 6987c478bd9Sstevel@tonic-gate * Set `p' to our current location in the string. 6997c478bd9Sstevel@tonic-gate */ 7007c478bd9Sstevel@tonic-gate p = (string == NULL) ? savept : string; 7017c478bd9Sstevel@tonic-gate if (p == NULL) 7027c478bd9Sstevel@tonic-gate return (NULL); 7037c478bd9Sstevel@tonic-gate 7047c478bd9Sstevel@tonic-gate /* 7057c478bd9Sstevel@tonic-gate * Skip leading separators; bail if no tokens remain. 7067c478bd9Sstevel@tonic-gate */ 7077c478bd9Sstevel@tonic-gate q = p + strspn(p, sepset); 7087c478bd9Sstevel@tonic-gate if (*q == '\0') 7097c478bd9Sstevel@tonic-gate return (NULL); 7107c478bd9Sstevel@tonic-gate 7117c478bd9Sstevel@tonic-gate /* 7127c478bd9Sstevel@tonic-gate * Mark the end of the token and set `savept' for the next iteration. 7137c478bd9Sstevel@tonic-gate */ 7147c478bd9Sstevel@tonic-gate if ((r = strpbrk(q, sepset)) == NULL) 7157c478bd9Sstevel@tonic-gate savept = NULL; 7167c478bd9Sstevel@tonic-gate else { 7177c478bd9Sstevel@tonic-gate *r = '\0'; 7187c478bd9Sstevel@tonic-gate savept = ++r; 7197c478bd9Sstevel@tonic-gate } 7207c478bd9Sstevel@tonic-gate 7217c478bd9Sstevel@tonic-gate return (q); 7227c478bd9Sstevel@tonic-gate } 7237c478bd9Sstevel@tonic-gate 7247c478bd9Sstevel@tonic-gate /* 7257c478bd9Sstevel@tonic-gate * The strlen() routine isn't shared with the kernel because it has its own 7267c478bd9Sstevel@tonic-gate * hand-tuned assembly version. 7277c478bd9Sstevel@tonic-gate */ 7287c478bd9Sstevel@tonic-gate size_t 7297c478bd9Sstevel@tonic-gate strlen(const char *s) 7307c478bd9Sstevel@tonic-gate { 7317c478bd9Sstevel@tonic-gate size_t n = 0; 7327c478bd9Sstevel@tonic-gate 7337c478bd9Sstevel@tonic-gate while (*s++) 7347c478bd9Sstevel@tonic-gate n++; 7357c478bd9Sstevel@tonic-gate return (n); 7367c478bd9Sstevel@tonic-gate } 7377c478bd9Sstevel@tonic-gate 7387c478bd9Sstevel@tonic-gate #endif /* _BOOT || _KMDB */ 7397c478bd9Sstevel@tonic-gate 7407637daddSmyers /* 7417637daddSmyers * Returns the number of non-NULL bytes in string argument, 7427637daddSmyers * but not more than maxlen. Does not look past str + maxlen. 7437637daddSmyers */ 7447637daddSmyers size_t 7457637daddSmyers strnlen(const char *s, size_t maxlen) 7467637daddSmyers { 7477637daddSmyers size_t n = 0; 7487637daddSmyers 7497637daddSmyers while (maxlen != 0 && *s != 0) { 7507637daddSmyers s++; 7517637daddSmyers maxlen--; 7527637daddSmyers n++; 7537637daddSmyers } 7547637daddSmyers 7557637daddSmyers return (n); 7567637daddSmyers } 7577637daddSmyers 7587637daddSmyers 7597c478bd9Sstevel@tonic-gate #ifdef _KERNEL 7607c478bd9Sstevel@tonic-gate /* 7617c478bd9Sstevel@tonic-gate * Check for a valid C identifier: 7627c478bd9Sstevel@tonic-gate * a letter or underscore, followed by 7637c478bd9Sstevel@tonic-gate * zero or more letters, digits and underscores. 7647c478bd9Sstevel@tonic-gate */ 7657c478bd9Sstevel@tonic-gate 7667c478bd9Sstevel@tonic-gate #define IS_DIGIT(c) ((c) >= '0' && (c) <= '9') 7677c478bd9Sstevel@tonic-gate 7687c478bd9Sstevel@tonic-gate #define IS_ALPHA(c) \ 7697c478bd9Sstevel@tonic-gate (((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z')) 7707c478bd9Sstevel@tonic-gate 7717c478bd9Sstevel@tonic-gate int 7727c478bd9Sstevel@tonic-gate strident_valid(const char *id) 7737c478bd9Sstevel@tonic-gate { 7747c478bd9Sstevel@tonic-gate int c = *id++; 7757c478bd9Sstevel@tonic-gate 7767c478bd9Sstevel@tonic-gate if (!IS_ALPHA(c) && c != '_') 7777c478bd9Sstevel@tonic-gate return (0); 7787c478bd9Sstevel@tonic-gate while ((c = *id++) != 0) { 7797c478bd9Sstevel@tonic-gate if (!IS_ALPHA(c) && !IS_DIGIT(c) && c != '_') 7807c478bd9Sstevel@tonic-gate return (0); 7817c478bd9Sstevel@tonic-gate } 7827c478bd9Sstevel@tonic-gate return (1); 7837c478bd9Sstevel@tonic-gate } 7847c478bd9Sstevel@tonic-gate 7857c478bd9Sstevel@tonic-gate /* 7867c478bd9Sstevel@tonic-gate * Convert a string into a valid C identifier by replacing invalid 7877c478bd9Sstevel@tonic-gate * characters with '_'. Also makes sure the string is nul-terminated 7887c478bd9Sstevel@tonic-gate * and takes up at most n bytes. 7897c478bd9Sstevel@tonic-gate */ 7907c478bd9Sstevel@tonic-gate void 7917c478bd9Sstevel@tonic-gate strident_canon(char *s, size_t n) 7927c478bd9Sstevel@tonic-gate { 7937c478bd9Sstevel@tonic-gate char c; 7947c478bd9Sstevel@tonic-gate char *end = s + n - 1; 7957c478bd9Sstevel@tonic-gate 7967c478bd9Sstevel@tonic-gate ASSERT(n > 0); 7977c478bd9Sstevel@tonic-gate 7987c478bd9Sstevel@tonic-gate if ((c = *s) == 0) 7997c478bd9Sstevel@tonic-gate return; 8007c478bd9Sstevel@tonic-gate 8017c478bd9Sstevel@tonic-gate if (!IS_ALPHA(c) && c != '_') 8027c478bd9Sstevel@tonic-gate *s = '_'; 8037c478bd9Sstevel@tonic-gate 8047c478bd9Sstevel@tonic-gate while (s < end && ((c = *(++s)) != 0)) { 8057c478bd9Sstevel@tonic-gate if (!IS_ALPHA(c) && !IS_DIGIT(c) && c != '_') 8067c478bd9Sstevel@tonic-gate *s = '_'; 8077c478bd9Sstevel@tonic-gate } 8087c478bd9Sstevel@tonic-gate *s = 0; 8097c478bd9Sstevel@tonic-gate } 8107c478bd9Sstevel@tonic-gate 8117c478bd9Sstevel@tonic-gate #endif /* _KERNEL */ 812