-static void modprobe_remove_lttng(const struct kern_modules_param *modules,
- int entries, int required)
-{
- int ret = 0, i;
- char modprobe[256];
-
- for (i = entries - 1; i >= 0; i--) {
- ret = snprintf(modprobe, sizeof(modprobe),
- "/sbin/modprobe -r -q %s",
- modules[i].name);
- if (ret < 0) {
- PERROR("snprintf modprobe -r");
- return;
- }
- modprobe[sizeof(modprobe) - 1] = '\0';
- ret = system(modprobe);
- if (ret == -1) {
- ERR("Unable to launch modprobe -r for module %s",
- modules[i].name);
- } else if (required && WEXITSTATUS(ret) != 0) {
- ERR("Unable to remove module %s",
- modules[i].name);
- } else {
- DBG("Modprobe removal successful %s",
- modules[i].name);
- }
- }
-}
-
-/*
- * Remove control kernel module(s) in reverse load order.
- */
-void modprobe_remove_lttng_control(void)
-{
- modprobe_remove_lttng(kern_modules_control_core,
- ARRAY_SIZE(kern_modules_control_core),
- LTTNG_MOD_REQUIRED);
-}
-
-static void free_probes(void)
-{
- int i;
-
- if (!probes) {
- return;
- }
- for (i = 0; i < nr_probes; ++i) {
- free(probes[i].name);
- }
- free(probes);
- probes = NULL;
- nr_probes = 0;
-}
-
-/*
- * Remove data kernel modules in reverse load order.
- */
-void modprobe_remove_lttng_data(void)
-{
- if (!probes) {
- return;
- }
- modprobe_remove_lttng(probes, nr_probes, LTTNG_MOD_OPTIONAL);
- free_probes();
-}
-
-/*
- * Remove all kernel modules in reverse order.
- */
-void modprobe_remove_lttng_all(void)
-{
- modprobe_remove_lttng_data();
- modprobe_remove_lttng_control();
-}
-