read-cache: use fixed width integer types

Use the fixed width integer types uint16_t and uint32_t for on-disk
structures; unsigned short and unsigned int do not have a guaranteed
size.

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

cache.h

@@ -101,9 +101,9 @@ unsigned long git_deflate_bound(git_zstream *, unsigned long);
 
 #define CACHE_SIGNATURE 0x44495243	/* "DIRC" */
 struct cache_header {
-	unsigned int hdr_signature;
-	unsigned int hdr_version;
-	unsigned int hdr_entries;
+	uint32_t hdr_signature;
+	uint32_t hdr_version;
+	uint32_t hdr_entries;
 };
 
 #define INDEX_FORMAT_LB 2
@@ -115,8 +115,8 @@ struct cache_header {
  * check it for equality in the 32 bits we save.
  */
 struct cache_time {
-	unsigned int sec;
-	unsigned int nsec;
+	uint32_t sec;
+	uint32_t nsec;
 };
 
 struct stat_data {

read-cache.c

@@ -1229,14 +1229,14 @@ static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int reall
 struct ondisk_cache_entry {
 	struct cache_time ctime;
 	struct cache_time mtime;
-	unsigned int dev;
-	unsigned int ino;
-	unsigned int mode;
-	unsigned int uid;
-	unsigned int gid;
-	unsigned int size;
+	uint32_t dev;
+	uint32_t ino;
+	uint32_t mode;
+	uint32_t uid;
+	uint32_t gid;
+	uint32_t size;
 	unsigned char sha1[20];
-	unsigned short flags;
+	uint16_t flags;
 	char name[FLEX_ARRAY]; /* more */
 };
 
@@ -1248,15 +1248,15 @@ struct ondisk_cache_entry {
 struct ondisk_cache_entry_extended {
 	struct cache_time ctime;
 	struct cache_time mtime;
-	unsigned int dev;
-	unsigned int ino;
-	unsigned int mode;
-	unsigned int uid;
-	unsigned int gid;
-	unsigned int size;
+	uint32_t dev;
+	uint32_t ino;
+	uint32_t mode;
+	uint32_t uid;
+	uint32_t gid;
+	uint32_t size;
 	unsigned char sha1[20];
-	unsigned short flags;
-	unsigned short flags2;
+	uint16_t flags;
+	uint16_t flags2;
 	char name[FLEX_ARRAY]; /* more */
 };