3 * Copyright (c) 2001,2003,2004 David H. Hovemeyer <daveho@cs.umd.edu>
4 * Copyright (c) 2003, Jeffrey K. Hollingsworth <hollings@cs.umd.edu>
6 * Permission is hereby granted, free of charge, to any person
7 * obtaining a copy of this software and associated documentation
8 * files (the "Software"), to deal in the Software without restriction,
9 * including without limitation the rights to use, copy, modify, merge,
10 * publish, distribute, sublicense, and/or sell copies of the Software,
11 * and to permit persons to whom the Software is furnished to do so,
12 * subject to the following conditions:
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
18 * ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
19 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
20 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
21 * SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
22 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
25 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 /* Modifications by Jack Lange <jarusl@cs.northwestern.edu> */
33 * These are slow and simple implementations of a subset of
34 * the standard C library string functions.
35 * We also have an implementation of snprintf().
44 #define NEED_STRNLEN 0
46 #define NEED_STRNCMP 0
48 #define NEED_STRNCAT 0
50 #define NEED_STRNCPY 0
54 #define NEED_STRRCHR 0
55 #define NEED_STRPBRK 0
59 #include <palacios/vmm_string.h>
60 #include <palacios/vmm.h>
64 void* memset(void* s, int c, size_t n)
66 unsigned char* p = (unsigned char*) s;
69 *p++ = (unsigned char) c;
78 void* memcpy(void *dst, const void* src, size_t n)
80 unsigned char* d = (unsigned char*) dst;
81 const unsigned char* s = (const unsigned char*) src;
94 int memcmp(const void *s1_, const void *s2_, size_t n)
96 const signed char *s1 = s1_, *s2 = s2_;
112 size_t strlen(const char* s)
125 * This it a GNU extension.
126 * It is like strlen(), but it will check at most maxlen
127 * characters for the terminating nul character,
128 * returning maxlen if it doesn't find a nul.
129 * This is very useful for checking the length of untrusted
130 * strings (e.g., from user space).
132 size_t strnlen(const char *s, size_t maxlen)
135 while (len < maxlen && *s++ != '\0')
143 int strcmp(const char* s1, const char* s2)
147 if (cmp != 0 || *s1 == '\0' || *s2 == '\0')
157 int strncmp(const char* s1, const char* s2, size_t limit)
162 if (cmp != 0 || *s1 == '\0' || *s2 == '\0')
169 /* limit reached and equal */
176 char *strcat(char *s1, const char *s2)
182 while(*s2) *s1++ = *s2++;
191 char *strncat(char *s1, const char *s2, size_t limit)
198 if(*s2 == '\0') break;
209 char *strcpy(char *dest, const char *src)
224 char *strncpy(char *dest, const char *src, size_t limit)
228 while (*src != '\0' && limit > 0) {
242 char *strdup(const char *s1)
246 ret = V3_Malloc(strlen(s1) + 1);
257 int atoi(const char *buf)
261 while (*buf >= '0' && *buf <= '9') {
273 char *strchr(const char *s, int c)
286 char *strrchr(const char *s, int c)
288 size_t len = strlen(s);
289 const char *p = s + len;
301 char *strpbrk(const char *s, const char *accept)
303 size_t setLen = strlen(accept);
307 for (i = 0; i < setLen; ++i) {