| /* |
| * QEMU XenStore XsNode testing |
| * |
| * Copyright © 2023 Amazon.com, Inc. or its affiliates. All Rights Reserved. |
| |
| * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| * See the COPYING file in the top-level directory. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qapi/error.h" |
| #include "qemu/module.h" |
| |
| static int nr_xs_nodes; |
| static GList *xs_node_list; |
| |
| #define XS_NODE_UNIT_TEST |
| |
| /* |
| * We don't need the core Xen definitions. And we *do* want to be able |
| * to run the unit tests even on architectures that Xen doesn't support |
| * (because life's too short to bother doing otherwise, and test coverage |
| * doesn't hurt). |
| */ |
| #define __XEN_PUBLIC_XEN_H__ |
| |
| #include "hw/i386/kvm/xenstore_impl.c" |
| |
| #define DOMID_QEMU 0 |
| #define DOMID_GUEST 1 |
| |
| static void dump_ref(const char *name, XsNode *n, int indent) |
| { |
| int i; |
| |
| if (!indent && name) { |
| printf("%s:\n", name); |
| } |
| |
| for (i = 0; i < indent; i++) { |
| printf(" "); |
| } |
| |
| printf("->%p(%d, '%s'): '%.*s'%s%s\n", n, n->ref, n->name, |
| (int)(n->content ? n->content->len : strlen("<empty>")), |
| n->content ? (char *)n->content->data : "<empty>", |
| n->modified_in_tx ? " MODIFIED" : "", |
| n->deleted_in_tx ? " DELETED" : ""); |
| |
| if (n->children) { |
| g_hash_table_foreach(n->children, (void *)dump_ref, |
| GINT_TO_POINTER(indent + 2)); |
| } |
| } |
| |
| /* This doesn't happen in qemu but we want to make valgrind happy */ |
| static void xs_impl_delete(XenstoreImplState *s, bool last) |
| { |
| int err; |
| |
| xs_impl_reset_watches(s, DOMID_GUEST); |
| g_assert(!s->nr_domu_watches); |
| |
| err = xs_impl_rm(s, DOMID_QEMU, XBT_NULL, "/local"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 1); |
| |
| g_hash_table_unref(s->watches); |
| g_hash_table_unref(s->transactions); |
| xs_node_unref(s->root); |
| g_free(s); |
| |
| if (!last) { |
| return; |
| } |
| |
| if (xs_node_list) { |
| GList *l; |
| for (l = xs_node_list; l; l = l->next) { |
| XsNode *n = l->data; |
| printf("Remaining node at %p name %s ref %u\n", n, n->name, |
| n->ref); |
| } |
| } |
| g_assert(!nr_xs_nodes); |
| } |
| |
| struct compare_walk { |
| char path[XENSTORE_ABS_PATH_MAX + 1]; |
| XsNode *parent_2; |
| bool compare_ok; |
| }; |
| |
| |
| static bool compare_perms(GList *p1, GList *p2) |
| { |
| while (p1) { |
| if (!p2 || g_strcmp0(p1->data, p2->data)) { |
| return false; |
| } |
| p1 = p1->next; |
| p2 = p2->next; |
| } |
| return (p2 == NULL); |
| } |
| |
| static bool compare_content(GByteArray *c1, GByteArray *c2) |
| { |
| size_t len1 = 0, len2 = 0; |
| |
| if (c1) { |
| len1 = c1->len; |
| } |
| if (c2) { |
| len2 = c2->len; |
| } |
| if (len1 != len2) { |
| return false; |
| } |
| |
| if (!len1) { |
| return true; |
| } |
| |
| return !memcmp(c1->data, c2->data, len1); |
| } |
| |
| static void compare_child(gpointer, gpointer, gpointer); |
| |
| static void compare_nodes(struct compare_walk *cw, XsNode *n1, XsNode *n2) |
| { |
| int nr_children1 = 0, nr_children2 = 0; |
| |
| if (n1->children) { |
| nr_children1 = g_hash_table_size(n1->children); |
| } |
| if (n2->children) { |
| nr_children2 = g_hash_table_size(n2->children); |
| } |
| |
| if (n1->ref != n2->ref || |
| n1->deleted_in_tx != n2->deleted_in_tx || |
| n1->modified_in_tx != n2->modified_in_tx || |
| !compare_perms(n1->perms, n2->perms) || |
| !compare_content(n1->content, n2->content) || |
| nr_children1 != nr_children2) { |
| cw->compare_ok = false; |
| printf("Compare failure on '%s'\n", cw->path); |
| } |
| |
| if (nr_children1) { |
| XsNode *oldparent = cw->parent_2; |
| cw->parent_2 = n2; |
| g_hash_table_foreach(n1->children, compare_child, cw); |
| |
| cw->parent_2 = oldparent; |
| } |
| } |
| |
| static void compare_child(gpointer key, gpointer val, gpointer opaque) |
| { |
| struct compare_walk *cw = opaque; |
| char *childname = key; |
| XsNode *child1 = val; |
| XsNode *child2 = g_hash_table_lookup(cw->parent_2->children, childname); |
| int pathlen = strlen(cw->path); |
| |
| if (!child2) { |
| cw->compare_ok = false; |
| printf("Child '%s' does not exist under '%s'\n", childname, cw->path); |
| return; |
| } |
| |
| strncat(cw->path, "/", sizeof(cw->path) - 1); |
| strncat(cw->path, childname, sizeof(cw->path) - 1); |
| |
| compare_nodes(cw, child1, child2); |
| cw->path[pathlen] = '\0'; |
| } |
| |
| static bool compare_trees(XsNode *n1, XsNode *n2) |
| { |
| struct compare_walk cw; |
| |
| cw.path[0] = '\0'; |
| cw.parent_2 = n2; |
| cw.compare_ok = true; |
| |
| if (!n1 || !n2) { |
| return false; |
| } |
| |
| compare_nodes(&cw, n1, n2); |
| return cw.compare_ok; |
| } |
| |
| static void compare_tx(gpointer key, gpointer val, gpointer opaque) |
| { |
| XenstoreImplState *s2 = opaque; |
| XsTransaction *t1 = val, *t2; |
| unsigned int tx_id = GPOINTER_TO_INT(key); |
| |
| t2 = g_hash_table_lookup(s2->transactions, key); |
| g_assert(t2); |
| |
| g_assert(t1->tx_id == tx_id); |
| g_assert(t2->tx_id == tx_id); |
| g_assert(t1->base_tx == t2->base_tx); |
| g_assert(t1->dom_id == t2->dom_id); |
| if (!compare_trees(t1->root, t2->root)) { |
| printf("Comparison failure in TX %u after serdes:\n", tx_id); |
| dump_ref("Original", t1->root, 0); |
| dump_ref("Deserialised", t2->root, 0); |
| g_assert(0); |
| } |
| g_assert(t1->nr_nodes == t2->nr_nodes); |
| } |
| |
| static int write_str(XenstoreImplState *s, unsigned int dom_id, |
| unsigned int tx_id, const char *path, |
| const char *content) |
| { |
| GByteArray *d = g_byte_array_new(); |
| int err; |
| |
| g_byte_array_append(d, (void *)content, strlen(content)); |
| err = xs_impl_write(s, dom_id, tx_id, path, d); |
| g_byte_array_unref(d); |
| return err; |
| } |
| |
| static void watch_cb(void *_str, const char *path, const char *token) |
| { |
| GString *str = _str; |
| |
| g_string_append(str, path); |
| g_string_append(str, token); |
| } |
| |
| static void check_serdes(XenstoreImplState *s) |
| { |
| XenstoreImplState *s2 = xs_impl_create(DOMID_GUEST); |
| GByteArray *bytes = xs_impl_serialize(s); |
| int nr_transactions1, nr_transactions2; |
| int ret; |
| |
| ret = xs_impl_deserialize(s2, bytes, DOMID_GUEST, watch_cb, NULL); |
| g_assert(!ret); |
| |
| g_byte_array_unref(bytes); |
| |
| g_assert(s->last_tx == s2->last_tx); |
| g_assert(s->root_tx == s2->root_tx); |
| |
| if (!compare_trees(s->root, s2->root)) { |
| printf("Comparison failure in main tree after serdes:\n"); |
| dump_ref("Original", s->root, 0); |
| dump_ref("Deserialised", s2->root, 0); |
| g_assert(0); |
| } |
| |
| nr_transactions1 = g_hash_table_size(s->transactions); |
| nr_transactions2 = g_hash_table_size(s2->transactions); |
| g_assert(nr_transactions1 == nr_transactions2); |
| |
| g_hash_table_foreach(s->transactions, compare_tx, s2); |
| |
| g_assert(s->nr_domu_watches == s2->nr_domu_watches); |
| g_assert(s->nr_domu_transactions == s2->nr_domu_transactions); |
| g_assert(s->nr_nodes == s2->nr_nodes); |
| xs_impl_delete(s2, false); |
| } |
| |
| static XenstoreImplState *setup(void) |
| { |
| XenstoreImplState *s = xs_impl_create(DOMID_GUEST); |
| char *abspath; |
| GList *perms; |
| int err; |
| |
| abspath = g_strdup_printf("/local/domain/%u", DOMID_GUEST); |
| |
| err = write_str(s, DOMID_QEMU, XBT_NULL, abspath, ""); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 4); |
| |
| perms = g_list_append(NULL, g_strdup_printf("n%u", DOMID_QEMU)); |
| perms = g_list_append(perms, g_strdup_printf("r%u", DOMID_GUEST)); |
| |
| err = xs_impl_set_perms(s, DOMID_QEMU, XBT_NULL, abspath, perms); |
| g_assert(!err); |
| |
| g_list_free_full(perms, g_free); |
| g_free(abspath); |
| |
| abspath = g_strdup_printf("/local/domain/%u/some", DOMID_GUEST); |
| |
| err = write_str(s, DOMID_QEMU, XBT_NULL, abspath, ""); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 5); |
| |
| perms = g_list_append(NULL, g_strdup_printf("n%u", DOMID_GUEST)); |
| |
| err = xs_impl_set_perms(s, DOMID_QEMU, XBT_NULL, abspath, perms); |
| g_assert(!err); |
| |
| g_list_free_full(perms, g_free); |
| g_free(abspath); |
| |
| return s; |
| } |
| |
| static void test_xs_node_simple(void) |
| { |
| GByteArray *data = g_byte_array_new(); |
| XenstoreImplState *s = setup(); |
| GString *guest_watches = g_string_new(NULL); |
| GString *qemu_watches = g_string_new(NULL); |
| GList *items = NULL; |
| XsNode *old_root; |
| uint64_t gencnt; |
| int err; |
| |
| g_assert(s); |
| |
| err = xs_impl_watch(s, DOMID_GUEST, "some", "guestwatch", |
| watch_cb, guest_watches); |
| g_assert(!err); |
| g_assert(guest_watches->len == strlen("someguestwatch")); |
| g_assert(!strcmp(guest_watches->str, "someguestwatch")); |
| g_string_truncate(guest_watches, 0); |
| |
| err = xs_impl_watch(s, 0, "/local/domain/1/some", "qemuwatch", |
| watch_cb, qemu_watches); |
| g_assert(!err); |
| g_assert(qemu_watches->len == strlen("/local/domain/1/someqemuwatch")); |
| g_assert(!strcmp(qemu_watches->str, "/local/domain/1/someqemuwatch")); |
| g_string_truncate(qemu_watches, 0); |
| |
| /* Read gives ENOENT when it should */ |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "foo", data); |
| g_assert(err == ENOENT); |
| |
| /* Write works */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/relative/path", |
| "something"); |
| g_assert(s->nr_nodes == 7); |
| g_assert(!err); |
| g_assert(!strcmp(guest_watches->str, |
| "some/relative/pathguestwatch")); |
| g_assert(!strcmp(qemu_watches->str, |
| "/local/domain/1/some/relative/pathqemuwatch")); |
| |
| g_string_truncate(qemu_watches, 0); |
| g_string_truncate(guest_watches, 0); |
| xs_impl_reset_watches(s, 0); |
| |
| /* Read gives back what we wrote */ |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/relative/path", data); |
| g_assert(!err); |
| g_assert(data->len == strlen("something")); |
| g_assert(!memcmp(data->data, "something", data->len)); |
| |
| /* Even if we use an abolute path */ |
| g_byte_array_set_size(data, 0); |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, |
| "/local/domain/1/some/relative/path", data); |
| g_assert(!err); |
| g_assert(data->len == strlen("something")); |
| |
| g_assert(!qemu_watches->len); |
| g_assert(!guest_watches->len); |
| /* Keep a copy, to force COW mode */ |
| old_root = xs_node_ref(s->root); |
| |
| /* Write somewhere we aren't allowed, in COW mode */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "/local/domain/badplace", |
| "moredata"); |
| g_assert(err == EACCES); |
| g_assert(s->nr_nodes == 7); |
| |
| /* Write works again */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, |
| "/local/domain/1/some/relative/path2", |
| "something else"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 8); |
| g_assert(!qemu_watches->len); |
| g_assert(!strcmp(guest_watches->str, "some/relative/path2guestwatch")); |
| g_string_truncate(guest_watches, 0); |
| |
| /* Overwrite an existing node */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/relative/path", |
| "another thing"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 8); |
| g_assert(!qemu_watches->len); |
| g_assert(!strcmp(guest_watches->str, "some/relative/pathguestwatch")); |
| g_string_truncate(guest_watches, 0); |
| |
| /* We can list the two files we wrote */ |
| err = xs_impl_directory(s, DOMID_GUEST, XBT_NULL, "some/relative", &gencnt, |
| &items); |
| g_assert(!err); |
| g_assert(items); |
| g_assert(gencnt == 2); |
| g_assert(!strcmp(items->data, "path")); |
| g_assert(items->next); |
| g_assert(!strcmp(items->next->data, "path2")); |
| g_assert(!items->next->next); |
| g_list_free_full(items, g_free); |
| |
| err = xs_impl_unwatch(s, DOMID_GUEST, "some", "guestwatch", |
| watch_cb, guest_watches); |
| g_assert(!err); |
| |
| err = xs_impl_unwatch(s, DOMID_GUEST, "some", "guestwatch", |
| watch_cb, guest_watches); |
| g_assert(err == ENOENT); |
| |
| err = xs_impl_watch(s, DOMID_GUEST, "some/relative/path2", "watchp2", |
| watch_cb, guest_watches); |
| g_assert(!err); |
| g_assert(guest_watches->len == strlen("some/relative/path2watchp2")); |
| g_assert(!strcmp(guest_watches->str, "some/relative/path2watchp2")); |
| g_string_truncate(guest_watches, 0); |
| |
| err = xs_impl_watch(s, DOMID_GUEST, "/local/domain/1/some/relative", |
| "watchrel", watch_cb, guest_watches); |
| g_assert(!err); |
| g_assert(guest_watches->len == |
| strlen("/local/domain/1/some/relativewatchrel")); |
| g_assert(!strcmp(guest_watches->str, |
| "/local/domain/1/some/relativewatchrel")); |
| g_string_truncate(guest_watches, 0); |
| |
| /* Write somewhere else which already existed */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/relative", "moredata"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 8); |
| |
| /* Write somewhere we aren't allowed */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "/local/domain/badplace", |
| "moredata"); |
| g_assert(err == EACCES); |
| |
| g_assert(!strcmp(guest_watches->str, |
| "/local/domain/1/some/relativewatchrel")); |
| g_string_truncate(guest_watches, 0); |
| |
| g_byte_array_set_size(data, 0); |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/relative", data); |
| g_assert(!err); |
| g_assert(data->len == strlen("moredata")); |
| g_assert(!memcmp(data->data, "moredata", data->len)); |
| |
| /* Overwrite existing data */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/relative", "otherdata"); |
| g_assert(!err); |
| g_string_truncate(guest_watches, 0); |
| |
| g_byte_array_set_size(data, 0); |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/relative", data); |
| g_assert(!err); |
| g_assert(data->len == strlen("otherdata")); |
| g_assert(!memcmp(data->data, "otherdata", data->len)); |
| |
| /* Remove the subtree */ |
| err = xs_impl_rm(s, DOMID_GUEST, XBT_NULL, "some/relative"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 5); |
| |
| /* Each watch fires with the least specific relevant path */ |
| g_assert(strstr(guest_watches->str, |
| "some/relative/path2watchp2")); |
| g_assert(strstr(guest_watches->str, |
| "/local/domain/1/some/relativewatchrel")); |
| g_string_truncate(guest_watches, 0); |
| |
| g_byte_array_set_size(data, 0); |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/relative", data); |
| g_assert(err == ENOENT); |
| g_byte_array_unref(data); |
| |
| xs_impl_reset_watches(s, DOMID_GUEST); |
| g_string_free(qemu_watches, true); |
| g_string_free(guest_watches, true); |
| xs_node_unref(old_root); |
| xs_impl_delete(s, true); |
| } |
| |
| |
| static void do_test_xs_node_tx(bool fail, bool commit) |
| { |
| XenstoreImplState *s = setup(); |
| GString *watches = g_string_new(NULL); |
| GByteArray *data = g_byte_array_new(); |
| unsigned int tx_id = XBT_NULL; |
| int err; |
| |
| g_assert(s); |
| |
| /* Set a watch */ |
| err = xs_impl_watch(s, DOMID_GUEST, "some", "watch", |
| watch_cb, watches); |
| g_assert(!err); |
| g_assert(watches->len == strlen("somewatch")); |
| g_assert(!strcmp(watches->str, "somewatch")); |
| g_string_truncate(watches, 0); |
| |
| /* Write something */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/relative/path", |
| "something"); |
| g_assert(s->nr_nodes == 7); |
| g_assert(!err); |
| g_assert(!strcmp(watches->str, |
| "some/relative/pathwatch")); |
| g_string_truncate(watches, 0); |
| |
| /* Create a transaction */ |
| err = xs_impl_transaction_start(s, DOMID_GUEST, &tx_id); |
| g_assert(!err); |
| |
| if (fail) { |
| /* Write something else in the root */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/relative/path", |
| "another thing"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 7); |
| g_assert(!strcmp(watches->str, |
| "some/relative/pathwatch")); |
| g_string_truncate(watches, 0); |
| } |
| |
| g_assert(!watches->len); |
| |
| /* Perform a write in the transaction */ |
| err = write_str(s, DOMID_GUEST, tx_id, "some/relative/path", |
| "something else"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 7); |
| g_assert(!watches->len); |
| |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/relative/path", data); |
| g_assert(!err); |
| if (fail) { |
| g_assert(data->len == strlen("another thing")); |
| g_assert(!memcmp(data->data, "another thing", data->len)); |
| } else { |
| g_assert(data->len == strlen("something")); |
| g_assert(!memcmp(data->data, "something", data->len)); |
| } |
| g_byte_array_set_size(data, 0); |
| |
| err = xs_impl_read(s, DOMID_GUEST, tx_id, "some/relative/path", data); |
| g_assert(!err); |
| g_assert(data->len == strlen("something else")); |
| g_assert(!memcmp(data->data, "something else", data->len)); |
| g_byte_array_set_size(data, 0); |
| |
| check_serdes(s); |
| |
| /* Attempt to commit the transaction */ |
| err = xs_impl_transaction_end(s, DOMID_GUEST, tx_id, commit); |
| if (commit && fail) { |
| g_assert(err == EAGAIN); |
| } else { |
| g_assert(!err); |
| } |
| if (commit && !fail) { |
| g_assert(!strcmp(watches->str, |
| "some/relative/pathwatch")); |
| g_string_truncate(watches, 0); |
| } else { |
| g_assert(!watches->len); |
| } |
| g_assert(s->nr_nodes == 7); |
| |
| check_serdes(s); |
| |
| err = xs_impl_unwatch(s, DOMID_GUEST, "some", "watch", |
| watch_cb, watches); |
| g_assert(!err); |
| |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/relative/path", data); |
| g_assert(!err); |
| if (fail) { |
| g_assert(data->len == strlen("another thing")); |
| g_assert(!memcmp(data->data, "another thing", data->len)); |
| } else if (commit) { |
| g_assert(data->len == strlen("something else")); |
| g_assert(!memcmp(data->data, "something else", data->len)); |
| } else { |
| g_assert(data->len == strlen("something")); |
| g_assert(!memcmp(data->data, "something", data->len)); |
| } |
| g_byte_array_unref(data); |
| g_string_free(watches, true); |
| xs_impl_delete(s, true); |
| } |
| |
| static void test_xs_node_tx_fail(void) |
| { |
| do_test_xs_node_tx(true, true); |
| } |
| |
| static void test_xs_node_tx_abort(void) |
| { |
| do_test_xs_node_tx(false, false); |
| do_test_xs_node_tx(true, false); |
| } |
| static void test_xs_node_tx_succeed(void) |
| { |
| do_test_xs_node_tx(false, true); |
| } |
| |
| static void test_xs_node_tx_rm(void) |
| { |
| XenstoreImplState *s = setup(); |
| GString *watches = g_string_new(NULL); |
| GByteArray *data = g_byte_array_new(); |
| unsigned int tx_id = XBT_NULL; |
| int err; |
| |
| g_assert(s); |
| |
| /* Set a watch */ |
| err = xs_impl_watch(s, DOMID_GUEST, "some", "watch", |
| watch_cb, watches); |
| g_assert(!err); |
| g_assert(watches->len == strlen("somewatch")); |
| g_assert(!strcmp(watches->str, "somewatch")); |
| g_string_truncate(watches, 0); |
| |
| /* Write something */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/deep/dark/relative/path", |
| "something"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 9); |
| g_assert(!strcmp(watches->str, |
| "some/deep/dark/relative/pathwatch")); |
| g_string_truncate(watches, 0); |
| |
| /* Create a transaction */ |
| err = xs_impl_transaction_start(s, DOMID_GUEST, &tx_id); |
| g_assert(!err); |
| |
| /* Delete the tree in the transaction */ |
| err = xs_impl_rm(s, DOMID_GUEST, tx_id, "some/deep/dark"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 9); |
| g_assert(!watches->len); |
| |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/deep/dark/relative/path", |
| data); |
| g_assert(!err); |
| g_assert(data->len == strlen("something")); |
| g_assert(!memcmp(data->data, "something", data->len)); |
| g_byte_array_set_size(data, 0); |
| |
| check_serdes(s); |
| |
| /* Commit the transaction */ |
| err = xs_impl_transaction_end(s, DOMID_GUEST, tx_id, true); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 6); |
| |
| g_assert(!strcmp(watches->str, "some/deep/darkwatch")); |
| g_string_truncate(watches, 0); |
| |
| /* Now the node is gone */ |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/deep/dark/relative/path", |
| data); |
| g_assert(err == ENOENT); |
| g_byte_array_unref(data); |
| |
| err = xs_impl_unwatch(s, DOMID_GUEST, "some", "watch", |
| watch_cb, watches); |
| g_assert(!err); |
| |
| g_string_free(watches, true); |
| xs_impl_delete(s, true); |
| } |
| |
| static void test_xs_node_tx_resurrect(void) |
| { |
| XenstoreImplState *s = setup(); |
| GString *watches = g_string_new(NULL); |
| GByteArray *data = g_byte_array_new(); |
| unsigned int tx_id = XBT_NULL; |
| int err; |
| |
| g_assert(s); |
| |
| /* Write something */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/deep/dark/relative/path", |
| "something"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 9); |
| |
| /* Another node to remain shared */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/place/safe", "keepme"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| |
| /* This node will be wiped and resurrected */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/deep/dark", |
| "foo"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| |
| /* Set a watch */ |
| err = xs_impl_watch(s, DOMID_GUEST, "some", "watch", |
| watch_cb, watches); |
| g_assert(!err); |
| g_assert(watches->len == strlen("somewatch")); |
| g_assert(!strcmp(watches->str, "somewatch")); |
| g_string_truncate(watches, 0); |
| |
| /* Create a transaction */ |
| err = xs_impl_transaction_start(s, DOMID_GUEST, &tx_id); |
| g_assert(!err); |
| |
| /* Delete the tree in the transaction */ |
| err = xs_impl_rm(s, DOMID_GUEST, tx_id, "some/deep"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| g_assert(!watches->len); |
| |
| /* Resurrect part of it */ |
| err = write_str(s, DOMID_GUEST, tx_id, "some/deep/dark/different/path", |
| "something"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| |
| check_serdes(s); |
| |
| /* Commit the transaction */ |
| err = xs_impl_transaction_end(s, DOMID_GUEST, tx_id, true); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| |
| check_serdes(s); |
| |
| /* lost data */ |
| g_assert(strstr(watches->str, "some/deep/dark/different/pathwatch")); |
| /* topmost deleted */ |
| g_assert(strstr(watches->str, "some/deep/dark/relativewatch")); |
| /* lost data */ |
| g_assert(strstr(watches->str, "some/deep/darkwatch")); |
| |
| g_string_truncate(watches, 0); |
| |
| /* Now the node is gone */ |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/deep/dark/relative/path", |
| data); |
| g_assert(err == ENOENT); |
| g_byte_array_unref(data); |
| |
| check_serdes(s); |
| |
| err = xs_impl_unwatch(s, DOMID_GUEST, "some", "watch", |
| watch_cb, watches); |
| g_assert(!err); |
| |
| g_string_free(watches, true); |
| xs_impl_delete(s, true); |
| } |
| |
| static void test_xs_node_tx_resurrect2(void) |
| { |
| XenstoreImplState *s = setup(); |
| GString *watches = g_string_new(NULL); |
| GByteArray *data = g_byte_array_new(); |
| unsigned int tx_id = XBT_NULL; |
| int err; |
| |
| g_assert(s); |
| |
| /* Write something */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/deep/dark/relative/path", |
| "something"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 9); |
| |
| /* Another node to remain shared */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/place/safe", "keepme"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| |
| /* This node will be wiped and resurrected */ |
| err = write_str(s, DOMID_GUEST, XBT_NULL, "some/deep/dark", |
| "foo"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| |
| /* Set a watch */ |
| err = xs_impl_watch(s, DOMID_GUEST, "some", "watch", |
| watch_cb, watches); |
| g_assert(!err); |
| g_assert(watches->len == strlen("somewatch")); |
| g_assert(!strcmp(watches->str, "somewatch")); |
| g_string_truncate(watches, 0); |
| |
| /* Create a transaction */ |
| err = xs_impl_transaction_start(s, DOMID_GUEST, &tx_id); |
| g_assert(!err); |
| |
| /* Delete the tree in the transaction */ |
| err = xs_impl_rm(s, DOMID_GUEST, tx_id, "some/deep"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| g_assert(!watches->len); |
| |
| /* Resurrect part of it */ |
| err = write_str(s, DOMID_GUEST, tx_id, "some/deep/dark/relative/path", |
| "something"); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| |
| check_serdes(s); |
| |
| /* Commit the transaction */ |
| err = xs_impl_transaction_end(s, DOMID_GUEST, tx_id, true); |
| g_assert(!err); |
| g_assert(s->nr_nodes == 11); |
| |
| check_serdes(s); |
| |
| /* lost data */ |
| g_assert(strstr(watches->str, "some/deep/dark/relative/pathwatch")); |
| /* lost data */ |
| g_assert(strstr(watches->str, "some/deep/darkwatch")); |
| |
| g_string_truncate(watches, 0); |
| |
| /* Now the node is gone */ |
| err = xs_impl_read(s, DOMID_GUEST, XBT_NULL, "some/deep/dark/relative/path", |
| data); |
| g_assert(!err); |
| g_assert(data->len == strlen("something")); |
| g_assert(!memcmp(data->data, "something", data->len)); |
| |
| g_byte_array_unref(data); |
| |
| check_serdes(s); |
| |
| err = xs_impl_unwatch(s, DOMID_GUEST, "some", "watch", |
| watch_cb, watches); |
| g_assert(!err); |
| |
| g_string_free(watches, true); |
| xs_impl_delete(s, true); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| g_test_init(&argc, &argv, NULL); |
| module_call_init(MODULE_INIT_QOM); |
| |
| g_test_add_func("/xs_node/simple", test_xs_node_simple); |
| g_test_add_func("/xs_node/tx_abort", test_xs_node_tx_abort); |
| g_test_add_func("/xs_node/tx_fail", test_xs_node_tx_fail); |
| g_test_add_func("/xs_node/tx_succeed", test_xs_node_tx_succeed); |
| g_test_add_func("/xs_node/tx_rm", test_xs_node_tx_rm); |
| g_test_add_func("/xs_node/tx_resurrect", test_xs_node_tx_resurrect); |
| g_test_add_func("/xs_node/tx_resurrect2", test_xs_node_tx_resurrect2); |
| |
| return g_test_run(); |
| } |
