1 files changed, 109 insertions, 0 deletions
diff --git a/src/lib/string.c b/src/lib/string.c
index 2e71489ff6..a19f017852 100644
--- a/src/lib/string.c
+++ b/src/lib/string.c
@@ -1,9 +1,14 @@
+#include <assert.h>
+#include <rules.h>
 #include <string.h>
 #include <stddef.h>
 #include <stdlib.h>
 
 char *strdup(const char *s)
 {
+	if (!ENV_RAMSTAGE)
+		dead_code();	/* This can't be used without malloc(). */
+
 	size_t sz = strlen(s) + 1;
 	char *d = malloc(sz);
 	if (d)
@@ -13,6 +18,9 @@ char *strdup(const char *s)
 
 char *strconcat(const char *s1, const char *s2)
 {
+	if (!ENV_RAMSTAGE)
+		dead_code();	/* This can't be used without malloc(). */
+
 	size_t sz_1 = strlen(s1);
 	size_t sz_2 = strlen(s2);
 	char *d = malloc(sz_1 + sz_2 + 1);
@@ -22,3 +30,104 @@ char *strconcat(const char *s1, const char *s2)
 	}
 	return d;
 }
+
+size_t strnlen(const char *src, size_t max)
+{
+	size_t i = 0;
+	while ((*src++) && (i < max))
+		i++;
+	return i;
+}
+
+size_t strlen(const char *src)
+{
+	size_t i = 0;
+	while (*src++)
+		i++;
+	return i;
+}
+
+char *strchr(const char *s, int c)
+{
+	do {
+		if (*s == c)
+			return (char *)s;
+	} while (*s++);
+
+	return NULL;
+}
+
+char *strrchr(const char *s, int c)
+{
+	char *p = NULL;
+
+	do {
+		if (*s == c)
+			p = (char *)s;
+	} while (*s++);
+
+	return p;
+}
+
+char *strncpy(char *to, const char *from, int count)
+{
+	char *ret = to;
+	char data;
+
+	while (count > 0) {
+		count--;
+		data = *from++;
+		*to++  = data;
+		if (data == '\0')
+			break;
+	}
+
+	while (count > 0) {
+		count--;
+		*to++ = '\0';
+	}
+	return ret;
+}
+
+char *strcpy(char *dst, const char *src)
+{
+	char *ptr = dst;
+
+	while (*src)
+		*dst++ = *src++;
+	*dst = '\0';
+
+	return ptr;
+}
+
+int strcmp(const char *s1, const char *s2)
+{
+	int r;
+
+	while ((r = (*s1 - *s2)) == 0 && *s1) {
+		s1++;
+		s2++;
+	}
+	return r;
+}
+
+int strncmp(const char *s1, const char *s2, int maxlen)
+{
+	int i;
+
+	for (i = 0; i < maxlen; i++) {
+		if ((s1[i] != s2[i]) || (s1[i] == '\0'))
+			return s1[i] - s2[i];
+	}
+
+	return 0;
+}
+
+unsigned int skip_atoi(char **s)
+{
+	unsigned int i = 0;
+
+	while (isdigit(**s))
+		i = i*10 + *((*s)++) - '0';
+	return i;
+}