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 273c5da275SMatthew Ahrens /* 283c5da275SMatthew Ahrens * Copyright (c) 2016 by Delphix. All rights reserved. 2977889f88SYuri Pankov * Copyright 2018 Nexenta Systems, Inc. 303c5da275SMatthew Ahrens */ 313c5da275SMatthew Ahrens 327c478bd9Sstevel@tonic-gate /* 337c478bd9Sstevel@tonic-gate * Implementations of the functions described in vsnprintf(3C) and string(3C), 347c478bd9Sstevel@tonic-gate * for use by the kernel, the standalone, and kmdb. Unless otherwise specified, 357c478bd9Sstevel@tonic-gate * these functions match the section 3C manpages. 367c478bd9Sstevel@tonic-gate */ 377c478bd9Sstevel@tonic-gate 387c478bd9Sstevel@tonic-gate #include <sys/types.h> 394870e0a7SRichard PALO #include <sys/null.h> 407c478bd9Sstevel@tonic-gate #include <sys/varargs.h> 41ae115bc7Smrj 42ae115bc7Smrj #if defined(_KERNEL) 437c478bd9Sstevel@tonic-gate #include <sys/systm.h> 447c478bd9Sstevel@tonic-gate #include <sys/debug.h> 45ae115bc7Smrj #elif !defined(_BOOT) 46ae115bc7Smrj #include <string.h> 47ae115bc7Smrj #endif 48ae115bc7Smrj 49ae115bc7Smrj #include "memcpy.h" 50ae115bc7Smrj #include "string.h" 517c478bd9Sstevel@tonic-gate 527c478bd9Sstevel@tonic-gate /* 53ae115bc7Smrj * We don't need these for x86 boot or kmdb. 547c478bd9Sstevel@tonic-gate */ 55ae115bc7Smrj #if !defined(_KMDB) && (!defined(_BOOT) || defined(__sparc)) 567c478bd9Sstevel@tonic-gate 577c478bd9Sstevel@tonic-gate #define ADDCHAR(c) if (bufp++ - buf < buflen) bufp[-1] = (c) 587c478bd9Sstevel@tonic-gate 597c478bd9Sstevel@tonic-gate /* 607c478bd9Sstevel@tonic-gate * Given a buffer 'buf' of size 'buflen', render as much of the string 617c478bd9Sstevel@tonic-gate * described by <fmt, args> as possible. The string will always be 627c478bd9Sstevel@tonic-gate * null-terminated, so the maximum string length is 'buflen - 1'. 637c478bd9Sstevel@tonic-gate * Returns the number of bytes that would be necessary to render the 647c478bd9Sstevel@tonic-gate * entire string, not including null terminator (just like vsnprintf(3S)). 657c478bd9Sstevel@tonic-gate * To determine buffer size in advance, use vsnprintf(NULL, 0, fmt, args) + 1. 667c478bd9Sstevel@tonic-gate * 677c478bd9Sstevel@tonic-gate * There is no support for floating point, and the C locale is assumed. 687c478bd9Sstevel@tonic-gate */ 697c478bd9Sstevel@tonic-gate size_t 707c478bd9Sstevel@tonic-gate vsnprintf(char *buf, size_t buflen, const char *fmt, va_list aargs) 717c478bd9Sstevel@tonic-gate { 727c478bd9Sstevel@tonic-gate uint64_t ul, tmp; 737c478bd9Sstevel@tonic-gate char *bufp = buf; /* current buffer pointer */ 7477889f88SYuri Pankov char c, pad; 7577889f88SYuri Pankov int width, base, sign, num; 76186507a7Smyers int prec, h_count, l_count, dot_count; 77186507a7Smyers int pad_count, transfer_count, left_align; 787c478bd9Sstevel@tonic-gate char *digits, *sp, *bs; 797c478bd9Sstevel@tonic-gate char numbuf[65]; /* sufficient for a 64-bit binary value */ 8077889f88SYuri Pankov int numwidth; 817c478bd9Sstevel@tonic-gate va_list args; 827c478bd9Sstevel@tonic-gate 83*584b574aSToomas Soome ul = 0; 84*584b574aSToomas Soome bs = NULL; 857c478bd9Sstevel@tonic-gate /* 867c478bd9Sstevel@tonic-gate * Make a copy so that all our callers don't have to make a copy 877c478bd9Sstevel@tonic-gate */ 887c478bd9Sstevel@tonic-gate va_copy(args, aargs); 897c478bd9Sstevel@tonic-gate 907c478bd9Sstevel@tonic-gate if ((ssize_t)buflen < 0) 917c478bd9Sstevel@tonic-gate buflen = 0; 927c478bd9Sstevel@tonic-gate 937c478bd9Sstevel@tonic-gate while ((c = *fmt++) != '\0') { 947c478bd9Sstevel@tonic-gate if (c != '%') { 957c478bd9Sstevel@tonic-gate ADDCHAR(c); 967c478bd9Sstevel@tonic-gate continue; 977c478bd9Sstevel@tonic-gate } 987c478bd9Sstevel@tonic-gate 9977889f88SYuri Pankov width = prec = numwidth = 0; 100186507a7Smyers left_align = base = sign = 0; 101186507a7Smyers h_count = l_count = dot_count = 0; 102186507a7Smyers pad = ' '; 103186507a7Smyers digits = "0123456789abcdef"; 104186507a7Smyers next_fmt: 1057c478bd9Sstevel@tonic-gate if ((c = *fmt++) == '\0') 1067c478bd9Sstevel@tonic-gate break; 1077c478bd9Sstevel@tonic-gate 1087c478bd9Sstevel@tonic-gate if (c >= 'A' && c <= 'Z') { 1097c478bd9Sstevel@tonic-gate c += 'a' - 'A'; 1107c478bd9Sstevel@tonic-gate digits = "0123456789ABCDEF"; 1117c478bd9Sstevel@tonic-gate } 1127c478bd9Sstevel@tonic-gate 1137c478bd9Sstevel@tonic-gate switch (c) { 114186507a7Smyers case '-': 115186507a7Smyers left_align++; 116186507a7Smyers goto next_fmt; 117186507a7Smyers case '0': 118186507a7Smyers if (dot_count == 0) 119186507a7Smyers pad = '0'; 120186507a7Smyers /*FALLTHROUGH*/ 121186507a7Smyers case '1': 122186507a7Smyers case '2': 123186507a7Smyers case '3': 124186507a7Smyers case '4': 125186507a7Smyers case '5': 126186507a7Smyers case '6': 127186507a7Smyers case '7': 128186507a7Smyers case '8': 129186507a7Smyers case '9': 130186507a7Smyers num = 0; 131186507a7Smyers for (;;) { 132186507a7Smyers num = 10 * num + c - '0'; 133186507a7Smyers c = *fmt; 134186507a7Smyers if (c < '0' || c > '9') 135186507a7Smyers break; 136186507a7Smyers else 137186507a7Smyers fmt++; 138186507a7Smyers } 139186507a7Smyers if (dot_count > 0) 140186507a7Smyers prec = num; 141186507a7Smyers else 142186507a7Smyers width = num; 143186507a7Smyers 144186507a7Smyers goto next_fmt; 145186507a7Smyers case '.': 146186507a7Smyers dot_count++; 147186507a7Smyers goto next_fmt; 148186507a7Smyers case '*': 149049fa28aSdr if (dot_count > 0) 150049fa28aSdr prec = (int)va_arg(args, int); 151049fa28aSdr else 152049fa28aSdr width = (int)va_arg(args, int); 153186507a7Smyers goto next_fmt; 154186507a7Smyers case 'l': 155186507a7Smyers l_count++; 156186507a7Smyers goto next_fmt; 157186507a7Smyers case 'h': 158186507a7Smyers h_count++; 159186507a7Smyers goto next_fmt; 1607c478bd9Sstevel@tonic-gate case 'd': 1617c478bd9Sstevel@tonic-gate sign = 1; 1627c478bd9Sstevel@tonic-gate /*FALLTHROUGH*/ 1637c478bd9Sstevel@tonic-gate case 'u': 1647c478bd9Sstevel@tonic-gate base = 10; 1657c478bd9Sstevel@tonic-gate break; 1667c478bd9Sstevel@tonic-gate case 'p': 167186507a7Smyers l_count = 1; 1687c478bd9Sstevel@tonic-gate /*FALLTHROUGH*/ 1697c478bd9Sstevel@tonic-gate case 'x': 1707c478bd9Sstevel@tonic-gate base = 16; 1717c478bd9Sstevel@tonic-gate break; 1727c478bd9Sstevel@tonic-gate case 'o': 1737c478bd9Sstevel@tonic-gate base = 8; 1747c478bd9Sstevel@tonic-gate break; 1757c478bd9Sstevel@tonic-gate case 'b': 176186507a7Smyers l_count = 0; 1777c478bd9Sstevel@tonic-gate base = 1; 1787c478bd9Sstevel@tonic-gate break; 1797c478bd9Sstevel@tonic-gate case 'c': 180fc77c268Smyers c = (char)va_arg(args, int); 181186507a7Smyers ADDCHAR(c); 1827c478bd9Sstevel@tonic-gate break; 1837c478bd9Sstevel@tonic-gate case 's': 1847c478bd9Sstevel@tonic-gate sp = va_arg(args, char *); 185186507a7Smyers if (sp == NULL) { 1867c478bd9Sstevel@tonic-gate sp = "<null string>"; 187186507a7Smyers /* avoid truncation */ 188186507a7Smyers prec = strlen(sp); 189186507a7Smyers } 190186507a7Smyers /* 191186507a7Smyers * Handle simple case specially to avoid 192186507a7Smyers * performance hit of strlen() 193186507a7Smyers */ 194186507a7Smyers if (prec == 0 && width == 0) { 195186507a7Smyers while ((c = *sp++) != 0) 196186507a7Smyers ADDCHAR(c); 197186507a7Smyers break; 198186507a7Smyers } 199186507a7Smyers if (prec > 0) { 2007637daddSmyers transfer_count = strnlen(sp, prec); 201186507a7Smyers /* widen field if too narrow */ 202186507a7Smyers if (prec > width) 203186507a7Smyers width = prec; 2047637daddSmyers } else 2057637daddSmyers transfer_count = strlen(sp); 206186507a7Smyers if (width > transfer_count) 207186507a7Smyers pad_count = width - transfer_count; 208186507a7Smyers else 209186507a7Smyers pad_count = 0; 210186507a7Smyers while ((!left_align) && (pad_count-- > 0)) 211186507a7Smyers ADDCHAR(' '); 212186507a7Smyers /* ADDCHAR() evaluates arg at most once */ 213186507a7Smyers while (transfer_count-- > 0) 214186507a7Smyers ADDCHAR(*sp++); 215186507a7Smyers while ((left_align) && (pad_count-- > 0)) 216186507a7Smyers ADDCHAR(' '); 2177c478bd9Sstevel@tonic-gate break; 2187c478bd9Sstevel@tonic-gate case '%': 2197c478bd9Sstevel@tonic-gate ADDCHAR('%'); 2207c478bd9Sstevel@tonic-gate break; 2217c478bd9Sstevel@tonic-gate } 2227c478bd9Sstevel@tonic-gate 2237c478bd9Sstevel@tonic-gate if (base == 0) 2247c478bd9Sstevel@tonic-gate continue; 2257c478bd9Sstevel@tonic-gate 226186507a7Smyers if (h_count == 0 && l_count == 0) 227186507a7Smyers if (sign) 228186507a7Smyers ul = (int64_t)va_arg(args, int); 229186507a7Smyers else 230186507a7Smyers ul = (int64_t)va_arg(args, unsigned int); 231186507a7Smyers else if (l_count > 1) 232186507a7Smyers if (sign) 233186507a7Smyers ul = (int64_t)va_arg(args, int64_t); 234186507a7Smyers else 235186507a7Smyers ul = (int64_t)va_arg(args, uint64_t); 236186507a7Smyers else if (l_count > 0) 237186507a7Smyers if (sign) 238186507a7Smyers ul = (int64_t)va_arg(args, long); 239186507a7Smyers else 240186507a7Smyers ul = (int64_t)va_arg(args, unsigned long); 241186507a7Smyers else if (h_count > 1) 242186507a7Smyers if (sign) 243fc77c268Smyers ul = (int64_t)((char)va_arg(args, int)); 244186507a7Smyers else 245fc77c268Smyers ul = (int64_t)((unsigned char)va_arg(args, 246fc77c268Smyers int)); 247186507a7Smyers else if (h_count > 0) 248186507a7Smyers if (sign) 249fc77c268Smyers ul = (int64_t)((short)va_arg(args, int)); 250186507a7Smyers else 251fc77c268Smyers ul = (int64_t)((unsigned short)va_arg(args, 252fc77c268Smyers int)); 2537c478bd9Sstevel@tonic-gate 2547c478bd9Sstevel@tonic-gate if (sign && (int64_t)ul < 0) 2557c478bd9Sstevel@tonic-gate ul = -ul; 2567c478bd9Sstevel@tonic-gate else 2577c478bd9Sstevel@tonic-gate sign = 0; 2587c478bd9Sstevel@tonic-gate 2597c478bd9Sstevel@tonic-gate if (c == 'b') { 2607c478bd9Sstevel@tonic-gate bs = va_arg(args, char *); 2617c478bd9Sstevel@tonic-gate base = *bs++; 2627c478bd9Sstevel@tonic-gate } 2637c478bd9Sstevel@tonic-gate 26477889f88SYuri Pankov /* 26577889f88SYuri Pankov * Fill in the number string buffer and calculate the 26677889f88SYuri Pankov * number string length. 26777889f88SYuri Pankov */ 26877889f88SYuri Pankov tmp = ul; 26977889f88SYuri Pankov sp = numbuf; 27077889f88SYuri Pankov do { 27177889f88SYuri Pankov *sp++ = digits[tmp % base]; 27277889f88SYuri Pankov numwidth++; 27377889f88SYuri Pankov } while ((tmp /= base) != 0); 27477889f88SYuri Pankov 27577889f88SYuri Pankov /* 27677889f88SYuri Pankov * Reduce the total field width by precision or the number 27777889f88SYuri Pankov * string length depending on which one is bigger, and sign. 27877889f88SYuri Pankov */ 27977889f88SYuri Pankov if (prec >= numwidth) 28077889f88SYuri Pankov width -= prec; 28177889f88SYuri Pankov else 28277889f88SYuri Pankov width -= numwidth; 28377889f88SYuri Pankov width -= sign; 2847c478bd9Sstevel@tonic-gate 28577889f88SYuri Pankov /* Add the sign if width is '0'-padded */ 2867c478bd9Sstevel@tonic-gate if (sign && pad == '0') 2877c478bd9Sstevel@tonic-gate ADDCHAR('-'); 28877889f88SYuri Pankov 28977889f88SYuri Pankov /* If not left-aligned, add the width padding */ 29077889f88SYuri Pankov if (!left_align) { 29177889f88SYuri Pankov while (width-- > 0) 29277889f88SYuri Pankov ADDCHAR(pad); 29377889f88SYuri Pankov } 29477889f88SYuri Pankov 29577889f88SYuri Pankov /* Add the sign if width is NOT '0'-padded */ 29677889f88SYuri Pankov if (sign && pad != '0') 2977c478bd9Sstevel@tonic-gate ADDCHAR('-'); 2987c478bd9Sstevel@tonic-gate 29977889f88SYuri Pankov /* Add the precision '0'-padding */ 30077889f88SYuri Pankov while (prec-- > numwidth) 30177889f88SYuri Pankov ADDCHAR('0'); 3027c478bd9Sstevel@tonic-gate 30377889f88SYuri Pankov /* Print out the number */ 3047c478bd9Sstevel@tonic-gate while (sp > numbuf) { 3057c478bd9Sstevel@tonic-gate sp--; 3067c478bd9Sstevel@tonic-gate ADDCHAR(*sp); 3077c478bd9Sstevel@tonic-gate } 3087c478bd9Sstevel@tonic-gate 30977889f88SYuri Pankov /* Add left-alignment padding */ 31077889f88SYuri Pankov while (width-- > 0) 311237b1f31SPatrick Mooney ADDCHAR(' '); 312237b1f31SPatrick Mooney 3137c478bd9Sstevel@tonic-gate if (c == 'b' && ul != 0) { 3147c478bd9Sstevel@tonic-gate int any = 0; 3157c478bd9Sstevel@tonic-gate c = *bs++; 3167c478bd9Sstevel@tonic-gate while (c != 0) { 3177c478bd9Sstevel@tonic-gate if (ul & (1 << (c - 1))) { 3187c478bd9Sstevel@tonic-gate if (any++ == 0) 3197c478bd9Sstevel@tonic-gate ADDCHAR('<'); 3207c478bd9Sstevel@tonic-gate while ((c = *bs++) >= 32) 3217c478bd9Sstevel@tonic-gate ADDCHAR(c); 3227c478bd9Sstevel@tonic-gate ADDCHAR(','); 3237c478bd9Sstevel@tonic-gate } else { 3247c478bd9Sstevel@tonic-gate while ((c = *bs++) >= 32) 3257c478bd9Sstevel@tonic-gate continue; 3267c478bd9Sstevel@tonic-gate } 3277c478bd9Sstevel@tonic-gate } 3287c478bd9Sstevel@tonic-gate if (any) { 3297c478bd9Sstevel@tonic-gate bufp--; 3307c478bd9Sstevel@tonic-gate ADDCHAR('>'); 3317c478bd9Sstevel@tonic-gate } 3327c478bd9Sstevel@tonic-gate } 3337c478bd9Sstevel@tonic-gate } 3347c478bd9Sstevel@tonic-gate if (bufp - buf < buflen) 3357c478bd9Sstevel@tonic-gate bufp[0] = c; 3367c478bd9Sstevel@tonic-gate else if (buflen != 0) 3377c478bd9Sstevel@tonic-gate buf[buflen - 1] = c; 3387c478bd9Sstevel@tonic-gate 3397c478bd9Sstevel@tonic-gate va_end(args); 3407c478bd9Sstevel@tonic-gate 3417c478bd9Sstevel@tonic-gate return (bufp - buf); 3427c478bd9Sstevel@tonic-gate } 3437c478bd9Sstevel@tonic-gate 3443c5da275SMatthew Ahrens /*PRINTFLIKE3*/ 3457c478bd9Sstevel@tonic-gate size_t 3467c478bd9Sstevel@tonic-gate snprintf(char *buf, size_t buflen, const char *fmt, ...) 3477c478bd9Sstevel@tonic-gate { 3487c478bd9Sstevel@tonic-gate va_list args; 3497c478bd9Sstevel@tonic-gate 3507c478bd9Sstevel@tonic-gate va_start(args, fmt); 3517c478bd9Sstevel@tonic-gate buflen = vsnprintf(buf, buflen, fmt, args); 3527c478bd9Sstevel@tonic-gate va_end(args); 3537c478bd9Sstevel@tonic-gate 3547c478bd9Sstevel@tonic-gate return (buflen); 3557c478bd9Sstevel@tonic-gate } 3567c478bd9Sstevel@tonic-gate 357ae115bc7Smrj #if defined(_BOOT) && defined(__sparc) 3587c478bd9Sstevel@tonic-gate /* 3597c478bd9Sstevel@tonic-gate * The sprintf() and vsprintf() routines aren't shared with the kernel because 3607c478bd9Sstevel@tonic-gate * the DDI mandates that they return the buffer rather than its length. 3617c478bd9Sstevel@tonic-gate */ 3627c478bd9Sstevel@tonic-gate /*PRINTFLIKE2*/ 3637c478bd9Sstevel@tonic-gate int 3647c478bd9Sstevel@tonic-gate sprintf(char *buf, const char *fmt, ...) 3657c478bd9Sstevel@tonic-gate { 3667c478bd9Sstevel@tonic-gate va_list args; 3677c478bd9Sstevel@tonic-gate 3687c478bd9Sstevel@tonic-gate va_start(args, fmt); 3697c478bd9Sstevel@tonic-gate (void) vsnprintf(buf, INT_MAX, fmt, args); 3707c478bd9Sstevel@tonic-gate va_end(args); 3717c478bd9Sstevel@tonic-gate 3727c478bd9Sstevel@tonic-gate return (strlen(buf)); 3737c478bd9Sstevel@tonic-gate } 3747c478bd9Sstevel@tonic-gate 3757c478bd9Sstevel@tonic-gate int 3767c478bd9Sstevel@tonic-gate vsprintf(char *buf, const char *fmt, va_list args) 3777c478bd9Sstevel@tonic-gate { 3787c478bd9Sstevel@tonic-gate (void) vsnprintf(buf, INT_MAX, fmt, args); 3797c478bd9Sstevel@tonic-gate return (strlen(buf)); 3807c478bd9Sstevel@tonic-gate } 381ae115bc7Smrj #endif /* _BOOT && __sparc */ 3827c478bd9Sstevel@tonic-gate 383ae115bc7Smrj #endif /* !_KMDB && (!_BOOT || __sparc) */ 3847c478bd9Sstevel@tonic-gate 3857c478bd9Sstevel@tonic-gate char * 3867c478bd9Sstevel@tonic-gate strcat(char *s1, const char *s2) 3877c478bd9Sstevel@tonic-gate { 3887c478bd9Sstevel@tonic-gate char *os1 = s1; 3897c478bd9Sstevel@tonic-gate 3907c478bd9Sstevel@tonic-gate while (*s1++ != '\0') 3917c478bd9Sstevel@tonic-gate ; 3927c478bd9Sstevel@tonic-gate s1--; 3937c478bd9Sstevel@tonic-gate while ((*s1++ = *s2++) != '\0') 3947c478bd9Sstevel@tonic-gate ; 3957c478bd9Sstevel@tonic-gate return (os1); 3967c478bd9Sstevel@tonic-gate } 3977c478bd9Sstevel@tonic-gate 3987c478bd9Sstevel@tonic-gate char * 3997c478bd9Sstevel@tonic-gate strchr(const char *sp, int c) 4007c478bd9Sstevel@tonic-gate { 4017c478bd9Sstevel@tonic-gate do { 4027c478bd9Sstevel@tonic-gate if (*sp == (char)c) 4037c478bd9Sstevel@tonic-gate return ((char *)sp); 4047c478bd9Sstevel@tonic-gate } while (*sp++); 4057c478bd9Sstevel@tonic-gate return (NULL); 4067c478bd9Sstevel@tonic-gate } 4077c478bd9Sstevel@tonic-gate 4087c478bd9Sstevel@tonic-gate int 4097c478bd9Sstevel@tonic-gate strcmp(const char *s1, const char *s2) 4107c478bd9Sstevel@tonic-gate { 4117c478bd9Sstevel@tonic-gate while (*s1 == *s2++) 4127c478bd9Sstevel@tonic-gate if (*s1++ == '\0') 4137c478bd9Sstevel@tonic-gate return (0); 4147c478bd9Sstevel@tonic-gate return (*(unsigned char *)s1 - *(unsigned char *)--s2); 4157c478bd9Sstevel@tonic-gate } 4167c478bd9Sstevel@tonic-gate 4177c478bd9Sstevel@tonic-gate int 4187c478bd9Sstevel@tonic-gate strncmp(const char *s1, const char *s2, size_t n) 4197c478bd9Sstevel@tonic-gate { 4207c478bd9Sstevel@tonic-gate if (s1 == s2) 4217c478bd9Sstevel@tonic-gate return (0); 4227c478bd9Sstevel@tonic-gate n++; 4237c478bd9Sstevel@tonic-gate while (--n != 0 && *s1 == *s2++) 4247c478bd9Sstevel@tonic-gate if (*s1++ == '\0') 4257c478bd9Sstevel@tonic-gate return (0); 4267c478bd9Sstevel@tonic-gate return ((n == 0) ? 0 : *(unsigned char *)s1 - *(unsigned char *)--s2); 4277c478bd9Sstevel@tonic-gate } 4287c478bd9Sstevel@tonic-gate 4297c478bd9Sstevel@tonic-gate static const char charmap[] = { 4307c478bd9Sstevel@tonic-gate '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007', 4317c478bd9Sstevel@tonic-gate '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017', 4327c478bd9Sstevel@tonic-gate '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027', 4337c478bd9Sstevel@tonic-gate '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037', 4347c478bd9Sstevel@tonic-gate '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047', 4357c478bd9Sstevel@tonic-gate '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057', 4367c478bd9Sstevel@tonic-gate '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067', 4377c478bd9Sstevel@tonic-gate '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077', 4387c478bd9Sstevel@tonic-gate '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147', 4397c478bd9Sstevel@tonic-gate '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', 4407c478bd9Sstevel@tonic-gate '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', 4417c478bd9Sstevel@tonic-gate '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137', 4427c478bd9Sstevel@tonic-gate '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147', 4437c478bd9Sstevel@tonic-gate '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', 4447c478bd9Sstevel@tonic-gate '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', 4457c478bd9Sstevel@tonic-gate '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177', 4467c478bd9Sstevel@tonic-gate '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207', 4477c478bd9Sstevel@tonic-gate '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217', 4487c478bd9Sstevel@tonic-gate '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227', 4497c478bd9Sstevel@tonic-gate '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237', 4507c478bd9Sstevel@tonic-gate '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247', 4517c478bd9Sstevel@tonic-gate '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257', 4527c478bd9Sstevel@tonic-gate '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267', 4537c478bd9Sstevel@tonic-gate '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277', 4547c478bd9Sstevel@tonic-gate '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307', 4557c478bd9Sstevel@tonic-gate '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317', 4567c478bd9Sstevel@tonic-gate '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327', 4577c478bd9Sstevel@tonic-gate '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337', 4587c478bd9Sstevel@tonic-gate '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347', 4597c478bd9Sstevel@tonic-gate '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357', 4607c478bd9Sstevel@tonic-gate '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367', 4617c478bd9Sstevel@tonic-gate '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377', 4627c478bd9Sstevel@tonic-gate }; 4637c478bd9Sstevel@tonic-gate 4647c478bd9Sstevel@tonic-gate int 4657c478bd9Sstevel@tonic-gate strcasecmp(const char *s1, const char *s2) 4667c478bd9Sstevel@tonic-gate { 4677c478bd9Sstevel@tonic-gate const unsigned char *cm = (const unsigned char *)charmap; 4687c478bd9Sstevel@tonic-gate const unsigned char *us1 = (const unsigned char *)s1; 4697c478bd9Sstevel@tonic-gate const unsigned char *us2 = (const unsigned char *)s2; 4707c478bd9Sstevel@tonic-gate 4717c478bd9Sstevel@tonic-gate while (cm[*us1] == cm[*us2++]) 4727c478bd9Sstevel@tonic-gate if (*us1++ == '\0') 4737c478bd9Sstevel@tonic-gate return (0); 4747c478bd9Sstevel@tonic-gate return (cm[*us1] - cm[*(us2 - 1)]); 4757c478bd9Sstevel@tonic-gate } 4767c478bd9Sstevel@tonic-gate 4777c478bd9Sstevel@tonic-gate int 4787c478bd9Sstevel@tonic-gate strncasecmp(const char *s1, const char *s2, size_t n) 4797c478bd9Sstevel@tonic-gate { 4807c478bd9Sstevel@tonic-gate const unsigned char *cm = (const unsigned char *)charmap; 4817c478bd9Sstevel@tonic-gate const unsigned char *us1 = (const unsigned char *)s1; 4827c478bd9Sstevel@tonic-gate const unsigned char *us2 = (const unsigned char *)s2; 4837c478bd9Sstevel@tonic-gate 4847c478bd9Sstevel@tonic-gate while (n != 0 && cm[*us1] == cm[*us2++]) { 4857c478bd9Sstevel@tonic-gate if (*us1++ == '\0') 4867c478bd9Sstevel@tonic-gate return (0); 4877c478bd9Sstevel@tonic-gate n--; 4887c478bd9Sstevel@tonic-gate } 4897c478bd9Sstevel@tonic-gate return (n == 0 ? 0 : cm[*us1] - cm[*(us2 - 1)]); 4907c478bd9Sstevel@tonic-gate } 4917c478bd9Sstevel@tonic-gate 4927c478bd9Sstevel@tonic-gate char * 4937c478bd9Sstevel@tonic-gate strcpy(char *s1, const char *s2) 4947c478bd9Sstevel@tonic-gate { 4957c478bd9Sstevel@tonic-gate char *os1 = s1; 4967c478bd9Sstevel@tonic-gate 4977c478bd9Sstevel@tonic-gate while ((*s1++ = *s2++) != '\0') 4987c478bd9Sstevel@tonic-gate ; 4997c478bd9Sstevel@tonic-gate return (os1); 5007c478bd9Sstevel@tonic-gate } 5017c478bd9Sstevel@tonic-gate 5027c478bd9Sstevel@tonic-gate char * 5037c478bd9Sstevel@tonic-gate strncpy(char *s1, const char *s2, size_t n) 5047c478bd9Sstevel@tonic-gate { 5057c478bd9Sstevel@tonic-gate char *os1 = s1; 5067c478bd9Sstevel@tonic-gate 5077c478bd9Sstevel@tonic-gate n++; 5087c478bd9Sstevel@tonic-gate while (--n != 0 && (*s1++ = *s2++) != '\0') 5097c478bd9Sstevel@tonic-gate ; 5107c478bd9Sstevel@tonic-gate if (n != 0) 5117c478bd9Sstevel@tonic-gate while (--n != 0) 5127c478bd9Sstevel@tonic-gate *s1++ = '\0'; 5137c478bd9Sstevel@tonic-gate return (os1); 5147c478bd9Sstevel@tonic-gate } 5157c478bd9Sstevel@tonic-gate 5167c478bd9Sstevel@tonic-gate char * 5177c478bd9Sstevel@tonic-gate strrchr(const char *sp, int c) 5187c478bd9Sstevel@tonic-gate { 5197c478bd9Sstevel@tonic-gate char *r = NULL; 5207c478bd9Sstevel@tonic-gate 5217c478bd9Sstevel@tonic-gate do { 5227c478bd9Sstevel@tonic-gate if (*sp == (char)c) 5237c478bd9Sstevel@tonic-gate r = (char *)sp; 5247c478bd9Sstevel@tonic-gate } while (*sp++); 5257c478bd9Sstevel@tonic-gate 5267c478bd9Sstevel@tonic-gate return (r); 5277c478bd9Sstevel@tonic-gate } 5287c478bd9Sstevel@tonic-gate 5297c478bd9Sstevel@tonic-gate char * 5307c478bd9Sstevel@tonic-gate strstr(const char *as1, const char *as2) 5317c478bd9Sstevel@tonic-gate { 5327c478bd9Sstevel@tonic-gate const char *s1, *s2; 5337c478bd9Sstevel@tonic-gate const char *tptr; 5347c478bd9Sstevel@tonic-gate char c; 5357c478bd9Sstevel@tonic-gate 5367c478bd9Sstevel@tonic-gate s1 = as1; 5377c478bd9Sstevel@tonic-gate s2 = as2; 5387c478bd9Sstevel@tonic-gate 5397c478bd9Sstevel@tonic-gate if (s2 == NULL || *s2 == '\0') 5407c478bd9Sstevel@tonic-gate return ((char *)s1); 5417c478bd9Sstevel@tonic-gate c = *s2; 5427c478bd9Sstevel@tonic-gate 5437c478bd9Sstevel@tonic-gate while (*s1) 5447c478bd9Sstevel@tonic-gate if (*s1++ == c) { 5457c478bd9Sstevel@tonic-gate tptr = s1; 5467c478bd9Sstevel@tonic-gate while ((c = *++s2) == *s1++ && c) 5477c478bd9Sstevel@tonic-gate ; 5487c478bd9Sstevel@tonic-gate if (c == 0) 5497c478bd9Sstevel@tonic-gate return ((char *)tptr - 1); 5507c478bd9Sstevel@tonic-gate s1 = tptr; 5517c478bd9Sstevel@tonic-gate s2 = as2; 5527c478bd9Sstevel@tonic-gate c = *s2; 5537c478bd9Sstevel@tonic-gate } 5547c478bd9Sstevel@tonic-gate 5557c478bd9Sstevel@tonic-gate return (NULL); 5567c478bd9Sstevel@tonic-gate } 5577c478bd9Sstevel@tonic-gate 5587c478bd9Sstevel@tonic-gate char * 5597c478bd9Sstevel@tonic-gate strpbrk(const char *string, const char *brkset) 5607c478bd9Sstevel@tonic-gate { 5617c478bd9Sstevel@tonic-gate const char *p; 5627c478bd9Sstevel@tonic-gate 5637c478bd9Sstevel@tonic-gate do { 5647c478bd9Sstevel@tonic-gate for (p = brkset; *p != '\0' && *p != *string; ++p) 5657c478bd9Sstevel@tonic-gate ; 5667c478bd9Sstevel@tonic-gate if (*p != '\0') 5677c478bd9Sstevel@tonic-gate return ((char *)string); 5687c478bd9Sstevel@tonic-gate } while (*string++); 5697c478bd9Sstevel@tonic-gate 5707c478bd9Sstevel@tonic-gate return (NULL); 5717c478bd9Sstevel@tonic-gate } 5727c478bd9Sstevel@tonic-gate 5737c478bd9Sstevel@tonic-gate char * 5747c478bd9Sstevel@tonic-gate strncat(char *s1, const char *s2, size_t n) 5757c478bd9Sstevel@tonic-gate { 5767c478bd9Sstevel@tonic-gate char *os1 = s1; 5777c478bd9Sstevel@tonic-gate 5787c478bd9Sstevel@tonic-gate n++; 5797c478bd9Sstevel@tonic-gate while (*s1++ != '\0') 5807c478bd9Sstevel@tonic-gate ; 5817c478bd9Sstevel@tonic-gate --s1; 5827c478bd9Sstevel@tonic-gate while ((*s1++ = *s2++) != '\0') { 5837c478bd9Sstevel@tonic-gate if (--n == 0) { 5847c478bd9Sstevel@tonic-gate s1[-1] = '\0'; 5857c478bd9Sstevel@tonic-gate break; 5867c478bd9Sstevel@tonic-gate } 5877c478bd9Sstevel@tonic-gate } 5887c478bd9Sstevel@tonic-gate return (os1); 5897c478bd9Sstevel@tonic-gate } 5907c478bd9Sstevel@tonic-gate 5917c478bd9Sstevel@tonic-gate #if defined(_BOOT) || defined(_KMDB) 5927c478bd9Sstevel@tonic-gate #define bcopy(src, dst, n) (void) memcpy((dst), (src), (n)) 5937c478bd9Sstevel@tonic-gate #endif 5947c478bd9Sstevel@tonic-gate 5957c478bd9Sstevel@tonic-gate size_t 5967c478bd9Sstevel@tonic-gate strlcat(char *dst, const char *src, size_t dstsize) 5977c478bd9Sstevel@tonic-gate { 5987c478bd9Sstevel@tonic-gate char *df = dst; 5997c478bd9Sstevel@tonic-gate size_t left = dstsize; 6007c478bd9Sstevel@tonic-gate size_t l1; 6017c478bd9Sstevel@tonic-gate size_t l2 = strlen(src); 6027c478bd9Sstevel@tonic-gate size_t copied; 6037c478bd9Sstevel@tonic-gate 6047c478bd9Sstevel@tonic-gate while (left-- != 0 && *df != '\0') 6057c478bd9Sstevel@tonic-gate df++; 606ae115bc7Smrj /*LINTED: possible ptrdiff_t overflow*/ 607ae115bc7Smrj l1 = (size_t)(df - dst); 6087c478bd9Sstevel@tonic-gate if (dstsize == l1) 6097c478bd9Sstevel@tonic-gate return (l1 + l2); 6107c478bd9Sstevel@tonic-gate 6117c478bd9Sstevel@tonic-gate copied = l1 + l2 >= dstsize ? dstsize - l1 - 1 : l2; 6127c478bd9Sstevel@tonic-gate bcopy(src, dst + l1, copied); 6137c478bd9Sstevel@tonic-gate dst[l1+copied] = '\0'; 6147c478bd9Sstevel@tonic-gate return (l1 + l2); 6157c478bd9Sstevel@tonic-gate } 6167c478bd9Sstevel@tonic-gate 6177c478bd9Sstevel@tonic-gate size_t 6187c478bd9Sstevel@tonic-gate strlcpy(char *dst, const char *src, size_t len) 6197c478bd9Sstevel@tonic-gate { 6207c478bd9Sstevel@tonic-gate size_t slen = strlen(src); 6217c478bd9Sstevel@tonic-gate size_t copied; 6227c478bd9Sstevel@tonic-gate 6237c478bd9Sstevel@tonic-gate if (len == 0) 6247c478bd9Sstevel@tonic-gate return (slen); 6257c478bd9Sstevel@tonic-gate 6267c478bd9Sstevel@tonic-gate if (slen >= len) 6277c478bd9Sstevel@tonic-gate copied = len - 1; 6287c478bd9Sstevel@tonic-gate else 6297c478bd9Sstevel@tonic-gate copied = slen; 6307c478bd9Sstevel@tonic-gate bcopy(src, dst, copied); 6317c478bd9Sstevel@tonic-gate dst[copied] = '\0'; 6327c478bd9Sstevel@tonic-gate return (slen); 6337c478bd9Sstevel@tonic-gate } 6347c478bd9Sstevel@tonic-gate 6357c478bd9Sstevel@tonic-gate size_t 6367c478bd9Sstevel@tonic-gate strspn(const char *string, const char *charset) 6377c478bd9Sstevel@tonic-gate { 6387c478bd9Sstevel@tonic-gate const char *p, *q; 6397c478bd9Sstevel@tonic-gate 6407c478bd9Sstevel@tonic-gate for (q = string; *q != '\0'; ++q) { 6417c478bd9Sstevel@tonic-gate for (p = charset; *p != '\0' && *p != *q; ++p) 6427c478bd9Sstevel@tonic-gate ; 6437c478bd9Sstevel@tonic-gate if (*p == '\0') 6447c478bd9Sstevel@tonic-gate break; 6457c478bd9Sstevel@tonic-gate } 6467c478bd9Sstevel@tonic-gate 647ae115bc7Smrj /*LINTED: possible ptrdiff_t overflow*/ 648ae115bc7Smrj return ((size_t)(q - string)); 6497c478bd9Sstevel@tonic-gate } 6507c478bd9Sstevel@tonic-gate 651da6c28aaSamw size_t 652da6c28aaSamw strcspn(const char *string, const char *charset) 653da6c28aaSamw { 654da6c28aaSamw const char *p, *q; 655da6c28aaSamw 656da6c28aaSamw for (q = string; *q != '\0'; ++q) { 657da6c28aaSamw for (p = charset; *p != '\0' && *p != *q; ++p) 658da6c28aaSamw ; 659da6c28aaSamw if (*p != '\0') 660da6c28aaSamw break; 661da6c28aaSamw } 662da6c28aaSamw 663da6c28aaSamw /*LINTED E_PTRDIFF_OVERFLOW*/ 664da6c28aaSamw return ((size_t)(q - string)); 665da6c28aaSamw } 666da6c28aaSamw 667da6c28aaSamw /* 668da6c28aaSamw * strsep 669da6c28aaSamw * 670da6c28aaSamw * The strsep() function locates, in the string referenced by *stringp, the 671da6c28aaSamw * first occurrence of any character in the string delim (or the terminating 672da6c28aaSamw * `\0' character) and replaces it with a `\0'. The location of the next 673da6c28aaSamw * character after the delimiter character (or NULL, if the end of the 674da6c28aaSamw * string was reached) is stored in *stringp. The original value of 675da6c28aaSamw * *stringp is returned. 676da6c28aaSamw * 677da6c28aaSamw * If *stringp is initially NULL, strsep() returns NULL. 678b811a51aSVladimir Kotal * 679b811a51aSVladimir Kotal * NOTE: This instance is left for in-kernel use. Libraries and programs 680b811a51aSVladimir Kotal * should use strsep from libc. 681da6c28aaSamw */ 682da6c28aaSamw char * 683da6c28aaSamw strsep(char **stringp, const char *delim) 684da6c28aaSamw { 685da6c28aaSamw char *s; 686da6c28aaSamw const char *spanp; 687da6c28aaSamw int c, sc; 688da6c28aaSamw char *tok; 689da6c28aaSamw 690da6c28aaSamw if ((s = *stringp) == NULL) 691da6c28aaSamw return (NULL); 692da6c28aaSamw 693da6c28aaSamw for (tok = s; ; ) { 694da6c28aaSamw c = *s++; 695da6c28aaSamw spanp = delim; 696da6c28aaSamw do { 697da6c28aaSamw if ((sc = *spanp++) == c) { 698da6c28aaSamw if (c == 0) 699da6c28aaSamw s = NULL; 700da6c28aaSamw else 701da6c28aaSamw s[-1] = 0; 702da6c28aaSamw *stringp = s; 703da6c28aaSamw return (tok); 704da6c28aaSamw } 705da6c28aaSamw } while (sc != 0); 706da6c28aaSamw } 707da6c28aaSamw /* NOTREACHED */ 708da6c28aaSamw } 709da6c28aaSamw 7107c478bd9Sstevel@tonic-gate /* 7117c478bd9Sstevel@tonic-gate * Unless mentioned otherwise, all of the routines below should be added to 7127c478bd9Sstevel@tonic-gate * the Solaris DDI as necessary. For now, only provide them to standalone. 7137c478bd9Sstevel@tonic-gate */ 7147c478bd9Sstevel@tonic-gate #if defined(_BOOT) || defined(_KMDB) 7157c478bd9Sstevel@tonic-gate char * 7167c478bd9Sstevel@tonic-gate strtok(char *string, const char *sepset) 7177c478bd9Sstevel@tonic-gate { 7187c478bd9Sstevel@tonic-gate char *p, *q, *r; 7197c478bd9Sstevel@tonic-gate static char *savept; 7207c478bd9Sstevel@tonic-gate 7217c478bd9Sstevel@tonic-gate /* 7227c478bd9Sstevel@tonic-gate * Set `p' to our current location in the string. 7237c478bd9Sstevel@tonic-gate */ 7247c478bd9Sstevel@tonic-gate p = (string == NULL) ? savept : string; 7257c478bd9Sstevel@tonic-gate if (p == NULL) 7267c478bd9Sstevel@tonic-gate return (NULL); 7277c478bd9Sstevel@tonic-gate 7287c478bd9Sstevel@tonic-gate /* 7297c478bd9Sstevel@tonic-gate * Skip leading separators; bail if no tokens remain. 7307c478bd9Sstevel@tonic-gate */ 7317c478bd9Sstevel@tonic-gate q = p + strspn(p, sepset); 7327c478bd9Sstevel@tonic-gate if (*q == '\0') 7337c478bd9Sstevel@tonic-gate return (NULL); 7347c478bd9Sstevel@tonic-gate 7357c478bd9Sstevel@tonic-gate /* 7367c478bd9Sstevel@tonic-gate * Mark the end of the token and set `savept' for the next iteration. 7377c478bd9Sstevel@tonic-gate */ 7387c478bd9Sstevel@tonic-gate if ((r = strpbrk(q, sepset)) == NULL) 7397c478bd9Sstevel@tonic-gate savept = NULL; 7407c478bd9Sstevel@tonic-gate else { 7417c478bd9Sstevel@tonic-gate *r = '\0'; 7427c478bd9Sstevel@tonic-gate savept = ++r; 7437c478bd9Sstevel@tonic-gate } 7447c478bd9Sstevel@tonic-gate 7457c478bd9Sstevel@tonic-gate return (q); 7467c478bd9Sstevel@tonic-gate } 7477c478bd9Sstevel@tonic-gate 7487c478bd9Sstevel@tonic-gate /* 7497c478bd9Sstevel@tonic-gate * The strlen() routine isn't shared with the kernel because it has its own 7507c478bd9Sstevel@tonic-gate * hand-tuned assembly version. 7517c478bd9Sstevel@tonic-gate */ 7527c478bd9Sstevel@tonic-gate size_t 7537c478bd9Sstevel@tonic-gate strlen(const char *s) 7547c478bd9Sstevel@tonic-gate { 7557c478bd9Sstevel@tonic-gate size_t n = 0; 7567c478bd9Sstevel@tonic-gate 7577c478bd9Sstevel@tonic-gate while (*s++) 7587c478bd9Sstevel@tonic-gate n++; 7597c478bd9Sstevel@tonic-gate return (n); 7607c478bd9Sstevel@tonic-gate } 7617c478bd9Sstevel@tonic-gate 7627c478bd9Sstevel@tonic-gate #endif /* _BOOT || _KMDB */ 7637c478bd9Sstevel@tonic-gate 7647637daddSmyers /* 7657637daddSmyers * Returns the number of non-NULL bytes in string argument, 7667637daddSmyers * but not more than maxlen. Does not look past str + maxlen. 7677637daddSmyers */ 7687637daddSmyers size_t 7697637daddSmyers strnlen(const char *s, size_t maxlen) 7707637daddSmyers { 7717637daddSmyers size_t n = 0; 7727637daddSmyers 7737637daddSmyers while (maxlen != 0 && *s != 0) { 7747637daddSmyers s++; 7757637daddSmyers maxlen--; 7767637daddSmyers n++; 7777637daddSmyers } 7787637daddSmyers 7797637daddSmyers return (n); 7807637daddSmyers } 7817637daddSmyers 7827637daddSmyers 7837c478bd9Sstevel@tonic-gate #ifdef _KERNEL 7847c478bd9Sstevel@tonic-gate /* 7857c478bd9Sstevel@tonic-gate * Check for a valid C identifier: 7867c478bd9Sstevel@tonic-gate * a letter or underscore, followed by 7877c478bd9Sstevel@tonic-gate * zero or more letters, digits and underscores. 7887c478bd9Sstevel@tonic-gate */ 7897c478bd9Sstevel@tonic-gate 7907c478bd9Sstevel@tonic-gate #define IS_DIGIT(c) ((c) >= '0' && (c) <= '9') 7917c478bd9Sstevel@tonic-gate 7927c478bd9Sstevel@tonic-gate #define IS_ALPHA(c) \ 7937c478bd9Sstevel@tonic-gate (((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z')) 7947c478bd9Sstevel@tonic-gate 7957c478bd9Sstevel@tonic-gate int 7967c478bd9Sstevel@tonic-gate strident_valid(const char *id) 7977c478bd9Sstevel@tonic-gate { 7987c478bd9Sstevel@tonic-gate int c = *id++; 7997c478bd9Sstevel@tonic-gate 8007c478bd9Sstevel@tonic-gate if (!IS_ALPHA(c) && c != '_') 8017c478bd9Sstevel@tonic-gate return (0); 8027c478bd9Sstevel@tonic-gate while ((c = *id++) != 0) { 8037c478bd9Sstevel@tonic-gate if (!IS_ALPHA(c) && !IS_DIGIT(c) && c != '_') 8047c478bd9Sstevel@tonic-gate return (0); 8057c478bd9Sstevel@tonic-gate } 8067c478bd9Sstevel@tonic-gate return (1); 8077c478bd9Sstevel@tonic-gate } 8087c478bd9Sstevel@tonic-gate 8097c478bd9Sstevel@tonic-gate /* 8107c478bd9Sstevel@tonic-gate * Convert a string into a valid C identifier by replacing invalid 8117c478bd9Sstevel@tonic-gate * characters with '_'. Also makes sure the string is nul-terminated 8127c478bd9Sstevel@tonic-gate * and takes up at most n bytes. 8137c478bd9Sstevel@tonic-gate */ 8147c478bd9Sstevel@tonic-gate void 8157c478bd9Sstevel@tonic-gate strident_canon(char *s, size_t n) 8167c478bd9Sstevel@tonic-gate { 8177c478bd9Sstevel@tonic-gate char c; 8187c478bd9Sstevel@tonic-gate char *end = s + n - 1; 8197c478bd9Sstevel@tonic-gate 8207c478bd9Sstevel@tonic-gate ASSERT(n > 0); 8217c478bd9Sstevel@tonic-gate 8227c478bd9Sstevel@tonic-gate if ((c = *s) == 0) 8237c478bd9Sstevel@tonic-gate return; 8247c478bd9Sstevel@tonic-gate 8257c478bd9Sstevel@tonic-gate if (!IS_ALPHA(c) && c != '_') 8267c478bd9Sstevel@tonic-gate *s = '_'; 8277c478bd9Sstevel@tonic-gate 8287c478bd9Sstevel@tonic-gate while (s < end && ((c = *(++s)) != 0)) { 8297c478bd9Sstevel@tonic-gate if (!IS_ALPHA(c) && !IS_DIGIT(c) && c != '_') 8307c478bd9Sstevel@tonic-gate *s = '_'; 8317c478bd9Sstevel@tonic-gate } 8327c478bd9Sstevel@tonic-gate *s = 0; 8337c478bd9Sstevel@tonic-gate } 8347c478bd9Sstevel@tonic-gate 8357c478bd9Sstevel@tonic-gate #endif /* _KERNEL */ 836