int
main (int argc, char *argv[])
{
guestfs_h *g;
int r, default_memsize;
/* What's the default memsize? */
g = guestfs_create ();
if (!g) error (EXIT_FAILURE, errno, "guestfs_create");
default_memsize = guestfs_get_memsize (g);
if (default_memsize == -1) exit (EXIT_FAILURE);
guestfs_close (g);
/* Check that guestfs_create parses the environment. */
setenv ("LIBGUESTFS_MEMSIZE", "799", 1);
g = guestfs_create ();
if (!g) error (EXIT_FAILURE, errno, "guestfs_create");
assert (guestfs_get_memsize (g) == 799);
guestfs_close (g);
/* Check that guestfs_create_flags with no flags parses the environment. */
setenv ("LIBGUESTFS_MEMSIZE", "798", 1);
g = guestfs_create_flags (0);
if (!g) error (EXIT_FAILURE, errno, "guestfs_create_flags");
assert (guestfs_get_memsize (g) == 798);
guestfs_close (g);
/* Check guestfs_create_flags + explicit guestfs_parse_environment. */
setenv ("LIBGUESTFS_MEMSIZE", "797", 1);
g = guestfs_create_flags (GUESTFS_CREATE_NO_ENVIRONMENT);
assert (guestfs_get_memsize (g) == default_memsize);
if (!g) error (EXIT_FAILURE, errno, "guestfs_create_flags");
setenv ("LIBGUESTFS_MEMSIZE", "796", 1);
r = guestfs_parse_environment (g);
if (r == -1) exit (EXIT_FAILURE);
assert (guestfs_get_memsize (g) == 796);
guestfs_close (g);
/* Check guestfs_parse_environment_list. */
setenv ("LIBGUESTFS_MEMSIZE", "795", 1);
g = guestfs_create_flags (GUESTFS_CREATE_NO_ENVIRONMENT);
assert (guestfs_get_memsize (g) == default_memsize);
if (!g) error (EXIT_FAILURE, errno, "guestfs_create_flags");
setenv ("LIBGUESTFS_MEMSIZE", "794", 1);
const char *local_environment[] = {
"LIBGUESTFS_MEMSIZE=793",
"LIBGUESTFS_MEMSIZE_NOT_REALLY_A_VARIABLE=1",
"FOO=bar",
"HOME=/homes",
"BLAH",
NULL
};
r = guestfs_parse_environment_list (g, (char **) local_environment);
if (r == -1) exit (EXIT_FAILURE);
assert (guestfs_get_memsize (g) == 793);
guestfs_close (g);
exit (EXIT_SUCCESS);
}
guestfs_h *
guestfs_create_flags (unsigned flags, ...)
{
guestfs_h *g;
g = calloc (1, sizeof (*g));
if (!g) return NULL;
g->state = CONFIG;
g->conn = NULL;
guestfs_int_init_error_handler (g);
g->abort_cb = abort;
g->recovery_proc = 1;
g->autosync = 1;
g->memsize = DEFAULT_MEMSIZE;
/* Start with large serial numbers so they are easy to spot
* inside the protocol.
*/
g->msg_next_serial = 0x00123400;
/* Default is uniprocessor appliance. */
g->smp = 1;
g->path = strdup (GUESTFS_DEFAULT_PATH);
if (!g->path) goto error;
#ifdef QEMU
g->hv = strdup (QEMU);
#else
/* configure --without-qemu, so set QEMU to something which will
* definitely fail. The user is expected to override the hypervisor
* by setting an environment variable or calling set_hv.
*/
g->hv = strdup ("false");
#endif
if (!g->hv) goto error;
/* Get program name. */
#if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME == 1
if (STRPREFIX (program_invocation_short_name, "lt-"))
/* Remove libtool (lt-*) prefix from short name. */
g->program = strdup (program_invocation_short_name + 3);
else
g->program = strdup (program_invocation_short_name);
#else
g->program = strdup ("");
#endif
if (!g->program) goto error;
g->identifier = strdup ("");
if (!g->identifier) goto error;
if (guestfs_int_set_backend (g, DEFAULT_BACKEND) == -1) {
warning (g, _("libguestfs was built with an invalid default backend, using 'direct' instead"));
if (guestfs_int_set_backend (g, "direct") == -1) {
warning (g, _("'direct' backend does not work"));
goto error;
}
}
if (!(flags & GUESTFS_CREATE_NO_ENVIRONMENT))
ignore_value (guestfs_parse_environment (g));
if (!(flags & GUESTFS_CREATE_NO_CLOSE_ON_EXIT)) {
g->close_on_exit = true;
/* Link the handles onto a global list. */
gl_lock_lock (handles_lock);
g->next = handles;
handles = g;
if (!atexit_handler_set) {
atexit (close_handles);
atexit_handler_set = 1;
}
gl_lock_unlock (handles_lock);
}
debug (g, "create: flags = %u, handle = %p, program = %s",
flags, g, g->program);
return g;
error:
guestfs_int_free_string_list (g->backend_settings);
free (g->backend);
free (g->identifier);
free (g->program);
free (g->path);
free (g->hv);
free (g->append);
free (g);
return NULL;
}