X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibsystemd%2Fsd-bus%2Fbus-control.c;h=cf733a663c50d2dbbdf33b618d42c2f8dc21b08c;hb=a2243d548830d2aff6b768a0b47a0f0a513012a5;hp=b22f4c4ff6679b9eebc15100597dccb222366553;hpb=619d7a039f9f64ffa593634c2715838ffbc17be4;p=elogind.git

diff --git a/src/libsystemd/sd-bus/bus-control.c b/src/libsystemd/sd-bus/bus-control.c
index b22f4c4ff..cf733a663 100644
--- a/src/libsystemd/sd-bus/bus-control.c
+++ b/src/libsystemd/sd-bus/bus-control.c
@@ -58,15 +58,15 @@ static int bus_request_name_kernel(sd_bus *bus, const char *name, uint64_t flags
         assert(bus);
         assert(name);
 
-        l = strlen(name);
-        size = offsetof(struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(l + 1);
+        l = strlen(name) + 1;
+        size = offsetof(struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(l);
         n = alloca0_align(size, 8);
         n->size = size;
         kdbus_translate_request_name_flags(flags, (uint64_t *) &n->flags);
 
-        n->items[0].size = KDBUS_ITEM_HEADER_SIZE + l + 1;
+        n->items[0].size = KDBUS_ITEM_HEADER_SIZE + l;
         n->items[0].type = KDBUS_ITEM_NAME;
-        memcpy(n->items[0].str, name, l+1);
+        memcpy(n->items[0].str, name, l);
 
 #ifdef HAVE_VALGRIND_MEMCHECK_H
         VALGRIND_MAKE_MEM_DEFINED(n, n->size);
@@ -153,14 +153,14 @@ static int bus_release_name_kernel(sd_bus *bus, const char *name) {
         assert(bus);
         assert(name);
 
-        l = strlen(name);
-        size = offsetof(struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(l + 1);
+        l = strlen(name) + 1;
+        size = offsetof(struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(l);
         n = alloca0_align(size, 8);
         n->size = size;
 
-        n->items[0].size = KDBUS_ITEM_HEADER_SIZE + l + 1;
+        n->items[0].size = KDBUS_ITEM_HEADER_SIZE + l;
         n->items[0].type = KDBUS_ITEM_NAME;
-        memcpy(n->items[0].str, name, l+1);
+        memcpy(n->items[0].str, name, l);
 
 #ifdef HAVE_VALGRIND_MEMCHECK_H
         VALGRIND_MAKE_MEM_DEFINED(n, n->size);
@@ -169,7 +169,7 @@ static int bus_release_name_kernel(sd_bus *bus, const char *name) {
         if (r < 0)
                 return -errno;
 
-        return n->flags;
+        return 0;
 }
 
 static int bus_release_name_dbus1(sd_bus *bus, const char *name) {
@@ -223,6 +223,23 @@ _public_ int sd_bus_release_name(sd_bus *bus, const char *name) {
                 return bus_release_name_dbus1(bus, name);
 }
 
+static int kernel_cmd_free(sd_bus *bus, uint64_t offset)
+{
+        struct kdbus_cmd_free cmd;
+        int r;
+
+        assert(bus);
+
+        cmd.flags = 0;
+        cmd.offset = offset;
+
+        r = ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd);
+        if (r < 0)
+                return -errno;
+
+        return 0;
+}
+
 static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
         struct kdbus_cmd_name_list cmd = {};
         struct kdbus_name_list *name_list;
@@ -269,9 +286,9 @@ static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
                 }
         }
 
-        r = ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd.offset);
+        r = kernel_cmd_free(bus, cmd.offset);
         if (r < 0)
-                return -errno;
+                return r;
 
         return 0;
 }
@@ -381,7 +398,7 @@ static int bus_get_owner_kdbus(
         struct kdbus_cmd_conn_info *cmd;
         struct kdbus_conn_info *conn_info;
         struct kdbus_item *item;
-        size_t size;
+        size_t size, l;
         uint64_t m, id;
         int r;
 
@@ -389,13 +406,16 @@ static int bus_get_owner_kdbus(
         if (r < 0)
                 return r;
         if (r > 0) {
-                size = offsetof(struct kdbus_cmd_conn_info, name);
+                size = offsetof(struct kdbus_cmd_conn_info, items);
                 cmd = alloca0_align(size, 8);
                 cmd->id = id;
         } else {
-                size = offsetof(struct kdbus_cmd_conn_info, name) + strlen(name) + 1;
+                l = strlen(name) + 1;
+                size = offsetof(struct kdbus_cmd_conn_info, items) + KDBUS_ITEM_SIZE(l);
                 cmd = alloca0_align(size, 8);
-                strcpy(cmd->name, name);
+                cmd->items[0].size = KDBUS_ITEM_HEADER_SIZE + l;
+                cmd->items[0].type = KDBUS_ITEM_NAME;
+                memcpy(cmd->items[0].str, name, l);
         }
 
         cmd->size = size;
@@ -593,7 +613,7 @@ static int bus_get_owner_kdbus(
         r = 0;
 
 fail:
-        ioctl(bus->input_fd, KDBUS_CMD_FREE, &cmd->offset);
+        kernel_cmd_free(bus, cmd->offset);
         return r;
 }