refs.c: change some "flags" to "unsigned int"

Change the following functions' "flags" arguments from "int" to
"unsigned int":

 * ref_transaction_update()
 * ref_transaction_create()
 * ref_transaction_delete()
 * update_ref()
 * delete_ref()
 * lock_ref_sha1_basic()

Also change the "flags" member in "struct ref_update" to unsigned.

Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/update-ref.c

@@ -353,7 +353,8 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
 {
 	const char *refname, *oldval;
 	unsigned char sha1[20], oldsha1[20];
-	int delete = 0, no_deref = 0, read_stdin = 0, end_null = 0, flags = 0;
+	int delete = 0, no_deref = 0, read_stdin = 0, end_null = 0;
+	unsigned int flags = 0;
 	struct option options[] = {
 		OPT_STRING( 'm', NULL, &msg, N_("reason"), N_("reason of the update")),
 		OPT_BOOL('d', NULL, &delete, N_("delete the reference")),

cache.h

@@ -568,7 +568,7 @@ extern void update_index_if_able(struct index_state *, struct lock_file *);
 extern int hold_locked_index(struct lock_file *, int);
 extern void set_alternate_index_output(const char *);
 
-extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
+extern int delete_ref(const char *, const unsigned char *sha1, unsigned int flags);
 
 /* Environment bits from configuration mechanism */
 extern int trust_executable_bit;

refs.c

@@ -2256,7 +2256,7 @@ int dwim_log(const char *str, int len, unsigned char *sha1, char **log)
 static struct ref_lock *lock_ref_sha1_basic(const char *refname,
 					    const unsigned char *old_sha1,
 					    const struct string_list *skip,
-					    int flags, int *type_p)
+					    unsigned int flags, int *type_p)
 {
 	char *ref_file;
 	const char *orig_refname = refname;
@@ -2740,14 +2740,14 @@ static int delete_ref_loose(struct ref_lock *lock, int flag, struct strbuf *err)
 	return 0;
 }
 
-int delete_ref(const char *refname, const unsigned char *sha1, int delopt)
+int delete_ref(const char *refname, const unsigned char *sha1, unsigned int flags)
 {
 	struct ref_transaction *transaction;
 	struct strbuf err = STRBUF_INIT;
 
 	transaction = ref_transaction_begin(&err);
 	if (!transaction ||
-	    ref_transaction_delete(transaction, refname, sha1, delopt,
+	    ref_transaction_delete(transaction, refname, sha1, flags,
 				   sha1 && !is_null_sha1(sha1), NULL, &err) ||
 	    ref_transaction_commit(transaction, &err)) {
 		error("%s", err.buf);
@@ -3571,7 +3571,7 @@ int for_each_reflog(each_ref_fn fn, void *cb_data)
 struct ref_update {
 	unsigned char new_sha1[20];
 	unsigned char old_sha1[20];
-	int flags; /* REF_NODEREF? */
+	unsigned int flags; /* REF_NODEREF? */
 	int have_old; /* 1 if old_sha1 is valid, 0 otherwise */
 	struct ref_lock *lock;
 	int type;
@@ -3644,7 +3644,7 @@ int ref_transaction_update(struct ref_transaction *transaction,
 			   const char *refname,
 			   const unsigned char *new_sha1,
 			   const unsigned char *old_sha1,
-			   int flags, int have_old, const char *msg,
+			   unsigned int flags, int have_old, const char *msg,
 			   struct strbuf *err)
 {
 	struct ref_update *update;
@@ -3678,7 +3678,7 @@ int ref_transaction_update(struct ref_transaction *transaction,
 int ref_transaction_create(struct ref_transaction *transaction,
 			   const char *refname,
 			   const unsigned char *new_sha1,
-			   int flags, const char *msg,
+			   unsigned int flags, const char *msg,
 			   struct strbuf *err)
 {
 	return ref_transaction_update(transaction, refname, new_sha1,
@@ -3688,7 +3688,7 @@ int ref_transaction_create(struct ref_transaction *transaction,
 int ref_transaction_delete(struct ref_transaction *transaction,
 			   const char *refname,
 			   const unsigned char *old_sha1,
-			   int flags, int have_old, const char *msg,
+			   unsigned int flags, int have_old, const char *msg,
 			   struct strbuf *err)
 {
 	return ref_transaction_update(transaction, refname, null_sha1,
@@ -3697,7 +3697,7 @@ int ref_transaction_delete(struct ref_transaction *transaction,
 
 int update_ref(const char *action, const char *refname,
 	       const unsigned char *sha1, const unsigned char *oldval,
-	       int flags, enum action_on_err onerr)
+	       unsigned int flags, enum action_on_err onerr)
 {
 	struct ref_transaction *t;
 	struct strbuf err = STRBUF_INIT;
@@ -3781,7 +3781,7 @@ int ref_transaction_commit(struct ref_transaction *transaction,
 	/* Acquire all locks while verifying old values */
 	for (i = 0; i < n; i++) {
 		struct ref_update *update = updates[i];
-		int flags = update->flags;
+		unsigned int flags = update->flags;
 
 		if (is_null_sha1(update->new_sha1))
 			flags |= REF_DELETING;

refs.h

@@ -276,7 +276,7 @@ int ref_transaction_update(struct ref_transaction *transaction,
 			   const char *refname,
 			   const unsigned char *new_sha1,
 			   const unsigned char *old_sha1,
-			   int flags, int have_old, const char *msg,
+			   unsigned int flags, int have_old, const char *msg,
 			   struct strbuf *err);
 
 /*
@@ -291,7 +291,7 @@ int ref_transaction_update(struct ref_transaction *transaction,
 int ref_transaction_create(struct ref_transaction *transaction,
 			   const char *refname,
 			   const unsigned char *new_sha1,
-			   int flags, const char *msg,
+			   unsigned int flags, const char *msg,
 			   struct strbuf *err);
 
 /*
@@ -305,7 +305,7 @@ int ref_transaction_create(struct ref_transaction *transaction,
 int ref_transaction_delete(struct ref_transaction *transaction,
 			   const char *refname,
 			   const unsigned char *old_sha1,
-			   int flags, int have_old, const char *msg,
+			   unsigned int flags, int have_old, const char *msg,
 			   struct strbuf *err);
 
 /*
@@ -329,7 +329,7 @@ void ref_transaction_free(struct ref_transaction *transaction);
 /** Lock a ref and then write its file */
 int update_ref(const char *action, const char *refname,
 	       const unsigned char *sha1, const unsigned char *oldval,
-		int flags, enum action_on_err onerr);
+	       unsigned int flags, enum action_on_err onerr);
 
 extern int parse_hide_refs_config(const char *var, const char *value, const char *);
 extern int ref_is_hidden(const char *);