Re: [Libguestfs] [PATCH libnbd] tests: Add a test of nbd_{set, get}_socket_activation_name

Also test that the expected environment variable is set when connecting to nbdkit. This test requires nbdkit >= 1.35.2 which added support for -D nbdkit.environ=1 to dump the environment, and will be skipped with other versions. --- .gitignore | 1 + tests/Makefile.am | 8 +++ tests/socket-activation-name.c | 99 ++++++++++++++++++++++++++++++++++ 3 files changed, 108 insertions(+) + /* Check firstly that it defaults to empty string. */ + r = nbd_get_socket_activation_name (nbd); + assert (r != NULL); + assert (strcmp (r, "") == 0); + free (r); + + /* Check we can set it to something and read that back. */ + assert (nbd_set_socket_activation_name (nbd, "hello") == 0); + r = nbd_get_socket_activation_name (nbd); + assert (r != NULL); + assert (strcmp (r, "hello") == 0); + free (r); + + /* Run external nbdkit and check the LISTEN_FDNAMES environment + * variable is set. We need to capture the debug output of nbdkit, + * hence the journey through the shell. + */ + unlink (DEBUG_FILE); + char *cmd[] = { + "sh", "-c", + "exec 2> " DEBUG_FILE "\n" + "exec nbdkit -v -D nbdkit.environ=1 null 1024\n", + NULL + }; + if (nbd_connect_systemd_socket_activation (nbd, cmd) == -1) { + fprintf (stderr, "%s\n", nbd_get_error ()); + exit (EXIT_FAILURE); + }