From: Felix Fietkau <nbd@openwrt.org>
Date: Tue, 3 Jun 2014 21:44:19 +0000 (+0200)
Subject: dns: constify various functions
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=4f9d5a0e19d4b480e5b36b5b3b76906f9b35939e;p=oweals%2Fmdnsd.git

dns: constify various functions

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---

diff --git a/dns.c b/dns.c
index cf8c3d5..5390fe6 100644
--- a/dns.c
+++ b/dns.c
@@ -100,7 +100,7 @@ dns_send_packet(int fd, struct iovec *iov, int iov_len)
 }
 
 void
-dns_send_question(struct uloop_fd *u, char *question, int type)
+dns_send_question(struct uloop_fd *u, const char *question, int type)
 {
 	static struct dns_header h = {
 		.questions = cpu_to_be16(1),
@@ -157,7 +157,7 @@ dns_init_answer(void)
 }
 
 void
-dns_add_answer(int type, uint8_t *rdata, uint16_t rdlength)
+dns_add_answer(int type, const uint8_t *rdata, uint16_t rdlength)
 {
 	struct dns_reply *a = &dns_reply[dns_answer_cnt];
 	if (dns_answer_cnt == MAX_ANSWER)
@@ -169,7 +169,7 @@ dns_add_answer(int type, uint8_t *rdata, uint16_t rdlength)
 }
 
 void
-dns_send_answer(struct uloop_fd *u, char *answer)
+dns_send_answer(struct uloop_fd *u, const char *answer)
 {
 	uint8_t buffer[256];
 	struct dns_header h = { 0 };
@@ -223,7 +223,7 @@ dns_send_answer(struct uloop_fd *u, char *answer)
 }
 
 static int
-scan_name(uint8_t *buffer, int len)
+scan_name(const uint8_t *buffer, int len)
 {
 	int offset = 0;
 
@@ -306,7 +306,7 @@ dns_consume_answer(uint8_t **data, int *len)
 }
 
 char*
-dns_consume_name(uint8_t *base, int blen, uint8_t **data, int *len)
+dns_consume_name(const uint8_t *base, int blen, uint8_t **data, int *len)
 {
 	int nlen = scan_name(*data, *len);
 
diff --git a/dns.h b/dns.h
index 4590123..c52d842 100644
--- a/dns.h
+++ b/dns.h
@@ -66,11 +66,11 @@ struct dns_question {
 
 extern char rdata_buffer[MAX_DATA_LEN + 1];
 
-extern void dns_send_question(struct uloop_fd *u, char *question, int type);
+extern void dns_send_question(struct uloop_fd *u, const char *question, int type);
 extern void dns_init_answer(void);
-extern void dns_add_answer(int type, uint8_t *rdata, uint16_t rdlength);
-extern void dns_send_answer(struct uloop_fd *u, char *answer);
-extern char* dns_consume_name(uint8_t *base, int blen, uint8_t **data, int *len);
+extern void dns_add_answer(int type, const uint8_t *rdata, uint16_t rdlength);
+extern void dns_send_answer(struct uloop_fd *u, const char *answer);
+extern char* dns_consume_name(const uint8_t *base, int blen, uint8_t **data, int *len);
 extern struct dns_answer* dns_consume_answer(uint8_t **data, int *len);
 extern struct dns_question* dns_consume_question(uint8_t **data, int *len);
 extern struct dns_header* dns_consume_header(uint8_t **data, int *len);