From e422ca0f292d08a873deacdbffbb6c6cbd79f88a Mon Sep 17 00:00:00 2001
From: "Ondrej Zajicek (work)" <santiago@crfreenet.org>
Date: Tue, 24 Nov 2015 13:52:26 +0100
Subject: [PATCH] Some consts for function arguments

Patch from Pavel Tvrdik
---
 lib/ip.c        | 6 +++---
 lib/ip.h        | 4 ++--
 lib/patmatch.c  | 2 +-
 lib/string.h    | 2 +-
 lib/unaligned.h | 4 ++--
 5 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/lib/ip.c b/lib/ip.c
index e1bfba49..2061a1f7 100644
--- a/lib/ip.c
+++ b/lib/ip.c
@@ -233,7 +233,7 @@ ip6_ntop(ip6_addr a, char *b)
 }
 
 int
-ip4_pton(char *a, ip4_addr *o)
+ip4_pton(const char *a, ip4_addr *o)
 {
   int i;
   unsigned long int l;
@@ -258,11 +258,11 @@ ip4_pton(char *a, ip4_addr *o)
 }
 
 int
-ip6_pton(char *a, ip6_addr *o)
+ip6_pton(const char *a, ip6_addr *o)
 {
   u16 words[8];
   int i, j, k, l, hfil;
-  char *start;
+  const char *start;
 
   if (a[0] == ':')			/* Leading :: */
   {
diff --git a/lib/ip.h b/lib/ip.h
index 90bb7f8a..e33adc6e 100644
--- a/lib/ip.h
+++ b/lib/ip.h
@@ -446,8 +446,8 @@ static inline char * ip4_ntox(ip4_addr a, char *b)
 static inline char * ip6_ntox(ip6_addr a, char *b)
 { return b + bsprintf(b, "%08x.%08x.%08x.%08x", _I0(a), _I1(a), _I2(a), _I3(a)); }
 
-int ip4_pton(char *a, ip4_addr *o);
-int ip6_pton(char *a, ip6_addr *o);
+int ip4_pton(const char *a, ip4_addr *o);
+int ip6_pton(const char *a, ip6_addr *o);
 
 // XXXX these functions must be redesigned or removed
 #ifdef IPV6
diff --git a/lib/patmatch.c b/lib/patmatch.c
index 923e8f86..d2e1e313 100644
--- a/lib/patmatch.c
+++ b/lib/patmatch.c
@@ -16,7 +16,7 @@
 #endif
 
 int
-MATCH_FUNC_NAME(byte *p, byte *s)
+MATCH_FUNC_NAME(const byte *p, const byte *s)
 {
   while (*p)
     {
diff --git a/lib/string.h b/lib/string.h
index 528a1a19..218f7b1c 100644
--- a/lib/string.h
+++ b/lib/string.h
@@ -22,6 +22,6 @@ int buffer_vprint(buffer *buf, const char *fmt, va_list args);
 int buffer_print(buffer *buf, const char *fmt, ...);
 void buffer_puts(buffer *buf, const char *str);
 
-int patmatch(byte *pat, byte *str);
+int patmatch(const byte *pat, const byte *str);
 
 #endif
diff --git a/lib/unaligned.h b/lib/unaligned.h
index a2dbae4f..dc777fbf 100644
--- a/lib/unaligned.h
+++ b/lib/unaligned.h
@@ -20,7 +20,7 @@
 #include "lib/string.h"
 
 static inline u16
-get_u16(void *p)
+get_u16(const void *p)
 {
   u16 x;
   memcpy(&x, p, 2);
@@ -28,7 +28,7 @@ get_u16(void *p)
 }
 
 static inline u32
-get_u32(void *p)
+get_u32(const void *p)
 {
   u32 x;
   memcpy(&x, p, 4);