const pointers

src/interface.c

@@ -234,7 +234,7 @@ static void closeInterface(Interface * interface)
 	SECURE("interface %i: closed\n", interface->num);
 }
 
-void openAInterface(int fd, struct sockaddr *addr)
+void openAInterface(int fd, const struct sockaddr *addr)
 {
 	unsigned int i;
 
@@ -249,7 +249,7 @@ void openAInterface(int fd, struct sockaddr *addr)
 		switch (addr->sa_family) {
 #ifdef HAVE_TCP
 		case AF_INET:
-			hostname = (const char *)inet_ntoa(((struct sockaddr_in *)
+			hostname = (const char *)inet_ntoa(((const struct sockaddr_in *)
 			                                    addr)->sin_addr);
 			if (!hostname)
 				hostname = "error getting ipv4 address";
@@ -259,8 +259,8 @@ void openAInterface(int fd, struct sockaddr *addr)
 			{
 				static char host[INET6_ADDRSTRLEN + 1];
 				memset(host, 0, INET6_ADDRSTRLEN + 1);
-				if (inet_ntop(AF_INET6, (void *)
-					      &(((struct sockaddr_in6 *)addr)->
+				if (inet_ntop(AF_INET6, (const void *)
+					      &(((const struct sockaddr_in6 *)addr)->
 						sin6_addr), host,
 					      INET6_ADDRSTRLEN)) {
 					hostname = (const char *)host;
@@ -689,7 +689,7 @@ static void flushInterfaceBuffer(Interface * interface)
 	}
 }
 
-int interfacePrintWithFD(int fd, char *buffer, size_t buflen)
+int interfacePrintWithFD(int fd, const char *buffer, size_t buflen)
 {
 	static unsigned int i;
 	size_t copylen;

src/interface.h

@@ -22,10 +22,10 @@
 #include "os_compat.h"
 
 void initInterfaces(void);
-void openAInterface(int fd, struct sockaddr *addr);
+void openAInterface(int fd, const struct sockaddr *addr);
 void freeAllInterfaces(void);
 void closeOldInterfaces(void);
-int interfacePrintWithFD(int fd, char *buffer, size_t len);
+int interfacePrintWithFD(int fd, const char *buffer, size_t len);
 
 int doIOForInterfaces(void);
 

src/sllist.c

@@ -34,22 +34,22 @@ struct strnode *new_strnode(char *s)
 	return x;
 }
 
-struct strnode *new_strnode_dup(char *s, const size_t size)
+struct strnode *new_strnode_dup(const char *s, const size_t size)
 {
 	struct strnode *x = xmalloc(sizeof(struct strnode) + size);
 	x->next = NULL;
 	x->data = ((char *)x + sizeof(struct strnode));
-	memcpy((void *)x->data, (void*)s, size);
+	memcpy((void *)x->data, (const void*)s, size);
 	return x;
 }
 
-struct sllnode *new_sllnode(void *s, const size_t size)
+struct sllnode *new_sllnode(const void *s, const size_t size)
 {
 	struct sllnode *x = xmalloc(sizeof(struct sllnode) + size);
 	x->next = NULL;
 	x->size = size;
 	x->data = ((char *)x + sizeof(struct sllnode));
-	memcpy(x->data, (void *)s, size);
+	memcpy(x->data, (const void *)s, size);
 	return x;
 }
 

src/sllist.h

@@ -42,11 +42,11 @@ struct sllnode {
 
 struct strnode *new_strnode(char *s);
 
-struct strnode *new_strnode_dup(char *s, const size_t size);
+struct strnode *new_strnode_dup(const char *s, const size_t size);
 
 struct strnode *dup_strlist(struct strnode *old);
 
-struct sllnode *new_sllnode(void *s, const size_t size);
+struct sllnode *new_sllnode(const void *s, const size_t size);
 
 
 #endif /* SLLIST_H */

src/tag.c

@@ -697,7 +697,7 @@ int mpdTagsAreEqual(MpdTag * tag1, MpdTag * tag2)
 }
 
 static void appendToTagItems(MpdTag * tag, enum tag_type type,
-			     char *value, size_t len)
+			     const char *value, size_t len)
 {
 	unsigned int i = tag->numOfItems;
 	char *duplicated = xmalloc(len + 1);
@@ -718,7 +718,7 @@ static void appendToTagItems(MpdTag * tag, enum tag_type type,
 }
 
 void addItemToMpdTagWithLen(MpdTag * tag, enum tag_type itemType,
-			    char *value, size_t len)
+			    const char *value, size_t len)
 {
 	if (ignoreTagItems[itemType])
 	{

src/tag.h

@@ -73,7 +73,7 @@ void clearItemsFromMpdTag(MpdTag * tag, enum tag_type itemType);
 void freeMpdTag(MpdTag * tag);
 
 void addItemToMpdTagWithLen(MpdTag * tag, enum tag_type itemType,
-			    char *value, size_t len);
+			    const char *value, size_t len);
 
 #define addItemToMpdTag(tag, itemType, value) \
 		addItemToMpdTagWithLen(tag, itemType, value, strlen(value))