test-pkt-line: introduce a packet-line test helper

diff --git a/transport-helper.c b/transport-helper.c
index 33cff38cc0b9b4a2d05b26544c9edda9caa33e9a..508015023176290ec0f8d78043d852cdd37d5ce6 100644 (file)
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -11,6 +11,7 @@
 #include "sigchain.h"
 #include "argv-array.h"
 #include "refs.h"
+#include "transport-internal.h"
 
 static int debug;
 
@@ -44,8 +45,7 @@ static void sendline(struct helper_data *helper, struct strbuf *buffer)
 {
        if (debug)
                fprintf(stderr, "Debug: Remote helper: -> %s", buffer->buf);
-       if (write_in_full(helper->helper->in, buffer->buf, buffer->len)
-               != buffer->len)
+       if (write_in_full(helper->helper->in, buffer->buf, buffer->len) < 0)
                die_errno("Full write to remote helper failed");
 }
 
@@ -74,7 +74,7 @@ static void write_constant(int fd, const char *str)
 {
        if (debug)
                fprintf(stderr, "Debug: Remote helper: -> %s", str);
-       if (write_in_full(fd, str, strlen(str)) != strlen(str))
+       if (write_in_full(fd, str, strlen(str)) < 0)
                die_errno("Full write to remote helper failed");
 }
 
@@ -536,7 +536,7 @@ static int fetch_with_import(struct transport *transport,
                else
                        private = xstrdup(name);
                if (private) {
-                       if (read_ref(private, posn->old_oid.hash) < 0)
+                       if (read_ref(private, &posn->old_oid) < 0)
                                die("Could not read ref %s", private);
                        free(private);
                }
@@ -604,6 +604,7 @@ static int process_connect_service(struct transport *transport,
                        cmdbuf.buf);
 
 exit:
+       strbuf_release(&cmdbuf);
        fclose(input);
        return ret;
 }
@@ -650,7 +651,7 @@ static int fetch(struct transport *transport,
 
        if (process_connect(transport, 0)) {
                do_take_over(transport);
-               return transport->fetch(transport, nr_heads, to_fetch);
+               return transport->vtable->fetch(transport, nr_heads, to_fetch);
        }
 
        count = 0;
@@ -795,7 +796,8 @@ static int push_update_refs_status(struct helper_data *data,
                private = apply_refspecs(data->refspecs, data->refspec_nr, ref->name);
                if (!private)
                        continue;
-               update_ref("update by helper", private, ref->new_oid.hash, NULL, 0, 0);
+               update_ref("update by helper", private, &ref->new_oid, NULL,
+                          0, 0);
                free(private);
        }
        strbuf_release(&buf);
@@ -881,7 +883,8 @@ static int push_refs_with_push(struct transport *transport,
                        struct strbuf cas = STRBUF_INIT;
                        strbuf_addf(&cas, "%s:%s",
                                    ref->name, oid_to_hex(&ref->old_oid_expect));
-                       string_list_append(&cas_options, strbuf_detach(&cas, NULL));
+                       string_list_append_nodup(&cas_options,
+                                                strbuf_detach(&cas, NULL));
                }
        }
        if (buf.len == 0) {
@@ -896,6 +899,7 @@ static int push_refs_with_push(struct transport *transport,
        strbuf_addch(&buf, '\n');
        sendline(data, &buf);
        strbuf_release(&buf);
+       string_list_clear(&cas_options, 0);
 
        return push_update_refs_status(data, remote_refs, flags);
 }
@@ -927,9 +931,10 @@ static int push_refs_with_export(struct transport *transport,
                struct object_id oid;
 
                private = apply_refspecs(data->refspecs, data->refspec_nr, ref->name);
-               if (private && !get_sha1(private, oid.hash)) {
+               if (private && !get_oid(private, &oid)) {
                        strbuf_addf(&buf, "^%s", private);
-                       string_list_append(&revlist_args, strbuf_detach(&buf, NULL));
+                       string_list_append_nodup(&revlist_args,
+                                                strbuf_detach(&buf, NULL));
                        oidcpy(&ref->old_oid, &oid);
                }
                free(private);
@@ -941,10 +946,9 @@ static int push_refs_with_export(struct transport *transport,
                                        int flag;
 
                                        /* Follow symbolic refs (mainly for HEAD). */
-                                       name = resolve_ref_unsafe(
-                                                ref->peer_ref->name,
-                                                RESOLVE_REF_READING,
-                                                oid.hash, &flag);
+                                       name = resolve_ref_unsafe(ref->peer_ref->name,
+                                                                 RESOLVE_REF_READING,
+                                                                 &oid, &flag);
                                        if (!name || !(flag & REF_ISSYMREF))
                                                name = ref->peer_ref->name;
 
@@ -987,7 +991,7 @@ static int push_refs(struct transport *transport,
 
        if (process_connect(transport, 1)) {
                do_take_over(transport);
-               return transport->push_refs(transport, remote_refs, flags);
+               return transport->vtable->push_refs(transport, remote_refs, flags);
        }
 
        if (!remote_refs) {
@@ -1035,7 +1039,7 @@ static struct ref *get_refs_list(struct transport *transport, int for_push)
 
        if (process_connect(transport, for_push)) {
                do_take_over(transport);
-               return transport->get_refs_list(transport, for_push);
+               return transport->vtable->get_refs_list(transport, for_push);
        }
 
        if (data->push && for_push)
@@ -1066,8 +1070,7 @@ static struct ref *get_refs_list(struct transport *transport, int for_push)
                if (eon) {
                        if (has_attribute(eon + 1, "unchanged")) {
                                (*tail)->status |= REF_STATUS_UPTODATE;
-                               if (read_ref((*tail)->name,
-                                            (*tail)->old_oid.hash) < 0)
+                               if (read_ref((*tail)->name, &(*tail)->old_oid) < 0)
                                        die(_("Could not read ref %s"),
                                            (*tail)->name);
                        }
@@ -1084,6 +1087,15 @@ static struct ref *get_refs_list(struct transport *transport, int for_push)
        return ret;
 }
 
+static struct transport_vtable vtable = {
+       set_helper_option,
+       get_refs_list,
+       fetch,
+       push_refs,
+       connect_helper,
+       release_helper
+};
+
 int transport_helper_init(struct transport *transport, const char *name)
 {
        struct helper_data *data = xcalloc(1, sizeof(*data));
@@ -1095,12 +1107,7 @@ int transport_helper_init(struct transport *transport, const char *name)
                debug = 1;
 
        transport->data = data;
-       transport->set_option = set_helper_option;
-       transport->get_refs_list = get_refs_list;
-       transport->fetch = fetch;
-       transport->push_refs = push_refs;
-       transport->disconnect = release_helper;
-       transport->connect = connect_helper;
+       transport->vtable = &vtable;
        transport->smart_options = &(data->transport_options);
        return 0;
 }
@@ -1117,6 +1124,13 @@ int transport_helper_init(struct transport *transport, const char *name)
 __attribute__((format (printf, 1, 2)))
 static void transfer_debug(const char *fmt, ...)
 {
+       /*
+        * NEEDSWORK: This function is sometimes used from multiple threads, and
+        * we end up using debug_enabled racily. That "should not matter" since
+        * we always write the same value, but it's still wrong. This function
+        * is listed in .tsan-suppressions for the time being.
+        */
+
        va_list args;
        char msgbuf[PBUFFERSIZE];
        static int debug_enabled = -1;