index: improve constness for reading blob data

Improve constness of the index_state parameter to the
'read_blob_data_from_index' function.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/cache.h b/cache.h
index 1b67f07..ef89eb4 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -599,7 +599,7 @@ extern int chmod_index_entry(struct index_state *, struct cache_entry *ce, char
 extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b);
 extern void set_object_name_for_intent_to_add_entry(struct cache_entry *ce);
 extern int index_name_is_other(const struct index_state *, const char *, int);
-extern void *read_blob_data_from_index(struct index_state *, const char *, unsigned long *);
+extern void *read_blob_data_from_index(const struct index_state *, const char *, unsigned long *);
 
 /* do stat comparison even if CE_VALID is true */
 #define CE_MATCH_IGNORE_VALID          01

diff --git a/read-cache.c b/read-cache.c
index 2eca639..7a9a7de 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -2285,7 +2285,8 @@ int index_name_is_other(const struct index_state *istate, const char *name,
        return 1;
 }
 
-void *read_blob_data_from_index(struct index_state *istate, const char *path, unsigned long *size)
+void *read_blob_data_from_index(const struct index_state *istate,
+                               const char *path, unsigned long *size)
 {
        int pos, len;
        unsigned long sz;