From 89c240e3a5de561ec7164507b41121aecc299b08 Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Thu, 30 Jul 2015 14:12:09 +0200 Subject: sd-bus: fix parsing of KDBUS_CMD_LIST We *must not* assume that an entry returned by KDBUS_CMD_LIST only carries a single KDBUS_ITEM_OWNED_NAME. Similarly, we already parse multiple such items for message-metadata, so make sure we support the same on KDBUS_CMD_LIST. By relying on the kernel to return all names separately, we limit the kernel API significantly. Stop this and let the kernel decide how to return its data. --- src/bus-proxyd/driver.c | 32 +++++++++++++++++--------------- src/libsystemd/sd-bus/bus-control.c | 20 +++++++++----------- 2 files changed, 26 insertions(+), 26 deletions(-) diff --git a/src/bus-proxyd/driver.c b/src/bus-proxyd/driver.c index 1cb5ea5008..aa94c6f51b 100644 --- a/src/bus-proxyd/driver.c +++ b/src/bus-proxyd/driver.c @@ -441,27 +441,29 @@ int bus_proxy_process_driver(Proxy *p, sd_bus *a, sd_bus *b, sd_bus_message *m, name_list = (struct kdbus_info *) ((uint8_t *) a->kdbus_buffer + cmd.offset); KDBUS_FOREACH(name, name_list, cmd.list_size) { - const char *entry_name = NULL; struct kdbus_item *item; char *n; - KDBUS_ITEM_FOREACH(item, name, items) - if (item->type == KDBUS_ITEM_OWNED_NAME) - entry_name = item->name.name; - - if (!streq_ptr(entry_name, arg0)) - continue; - - if (asprintf(&n, ":1.%llu", (unsigned long long) name->id) < 0) { - err = -ENOMEM; - break; + KDBUS_ITEM_FOREACH(item, name, items) { + if (item->type == KDBUS_ITEM_OWNED_NAME) { + if (!streq_ptr(item->name.name, arg0)) + continue; + + if (asprintf(&n, ":1.%llu", (unsigned long long) name->id) < 0) { + err = -ENOMEM; + break; + } + + r = strv_consume(&owners, n); + if (r < 0) { + err = r; + break; + } + } } - r = strv_consume(&owners, n); - if (r < 0) { - err = r; + if (err < 0) break; - } } r = bus_kernel_cmd_free(a, cmd.offset); diff --git a/src/libsystemd/sd-bus/bus-control.c b/src/libsystemd/sd-bus/bus-control.c index c53666ddd0..773c264cf0 100644 --- a/src/libsystemd/sd-bus/bus-control.c +++ b/src/libsystemd/sd-bus/bus-control.c @@ -256,9 +256,7 @@ static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) { name_list = (struct kdbus_info *) ((uint8_t *) bus->kdbus_buffer + cmd.offset); KDBUS_FOREACH(name, name_list, cmd.list_size) { - struct kdbus_item *item; - const char *entry_name = NULL; if ((flags & KDBUS_LIST_UNIQUE) && name->id != previous_id) { char *n; @@ -275,15 +273,15 @@ static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) { previous_id = name->id; } - KDBUS_ITEM_FOREACH(item, name, items) - if (item->type == KDBUS_ITEM_OWNED_NAME) - entry_name = item->name.name; - - if (entry_name && service_name_is_valid(entry_name)) { - r = strv_extend(x, entry_name); - if (r < 0) { - r = -ENOMEM; - goto fail; + KDBUS_ITEM_FOREACH(item, name, items) { + if (item->type == KDBUS_ITEM_OWNED_NAME) { + if (service_name_is_valid(item->name.name)) { + r = strv_extend(x, item->name.name); + if (r < 0) { + r = -ENOMEM; + goto fail; + } + } } } } -- cgit v1.2.3-54-g00ecf