X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Usermode%2FLibraries%2Flibc.so_src%2Fstring.c;h=eaddd181d0b499d33f17617b167a620d0be1013f;hb=c8e606164e7bb405295b2f14e6949d0812cfa342;hp=98692b215b9f00f510470ad2d5c68f7fc4f9c617;hpb=95a7eaaa4a1065334125b65130866f8d1048ddb7;p=tpg%2Facess2.git

diff --git a/Usermode/Libraries/libc.so_src/string.c b/Usermode/Libraries/libc.so_src/string.c
index 98692b21..eaddd181 100644
--- a/Usermode/Libraries/libc.so_src/string.c
+++ b/Usermode/Libraries/libc.so_src/string.c
@@ -19,6 +19,19 @@ EXPORT int strcmp(const char *s1, const char *s2)
 	return (int)*s1 - (int)*s2;
 }
 
+/**
+ * \fn EXPORT int strncmp(const char *s1, const char *s2)
+ * \brief Compare two strings
+ */
+EXPORT int strncmp(const char *s1, const char *s2, size_t n)
+{
+	if( n == 0 )	return 0;
+	while(n -- && *s1 == *s2 && *s1 != '\0' && *s2 != '\0') {
+		s1++; s2++;
+	}
+	return (int)*s1 - (int)*s2;
+}
+
 /**
  * \fn EXPORT char *strcpy(char *dst, const char *src)
  * \brief Copy a string to another
@@ -75,18 +88,6 @@ EXPORT int strlen(const char *str)
 	return retval;
 }
 
-/**
- * \fn EXPORT int strncmp(const char *s1, const char *s2, size_t len)
- * \brief Compare two strings with a limit
- */
-EXPORT int strncmp(const char *s1, const char *s2, size_t len)
-{
-	while(--len && *s1 == *s2 && *s1 != '\0' && *s2 != '\0') {
-		s1++; s2++;
-	}
-	return (int)*s1 - (int)*s2;
-}
-
 /**
  * \fn EXPORT char *strdup(const char *str)
  * \brief Duplicate a string using heap memory
@@ -101,6 +102,24 @@ EXPORT char *strdup(const char *str)
 	return ret;
 }
 
+/**
+ * \fn EXPORT char *strndup(const char *str, size_t maxlen)
+ * \brief Duplicate a string into the heap with a maximum length
+ * \param str	Input string buffer
+ * \param maxlen	Maximum valid size of the \a str buffer
+ * \return Heap string with the same value of \a str
+ */
+EXPORT char *strndup(const char *str, size_t maxlen)
+{
+	size_t	len;
+	char	*ret;
+	for( len = 0; len < maxlen && str[len]; len ++) ;
+	ret = malloc( len + 1);
+	memcpy( ret, str, len );
+	ret[len] = '\0';
+	return ret;
+}
+
 /**
  * \fn EXPORT char *strchr(char *str, int character)
  * \brief Locate a character in a string