static inline bool cgm_create(struct lxc_handler *handler)
{
int i, index=0, baselen, ret;
int32_t existed;
char result[MAXPATHLEN], *tmp;
char *cgroup_path = handler->cgroup_info->data;
// XXX we should send a hint to the cgmanager that when these
// cgroups become empty they should be deleted. Requires a cgmanager
// extension
memset(result, 0, MAXPATHLEN);
tmp = lxc_string_replace("%n", handler->name, handler->cgroup_info->cgroup_pattern);
if (!tmp)
return false;
if (strlen(tmp) > MAXPATHLEN)
return false;
strcpy(result, tmp);
baselen = strlen(result);
free(tmp);
tmp = result;
while (*tmp == '/')
tmp++;
again:
if (index == 100) { // turn this into a warn later
ERROR("cgroup error? 100 cgroups with this name already running");
return false;
}
if (index) {
ret = snprintf(result+baselen, MAXPATHLEN-baselen, "-%d", index);
if (ret < 0 || ret >= MAXPATHLEN-baselen)
return false;
}
existed = 0;
for (i = 0; i < nr_subsystems; i++) {
if (!lxc_cgmanager_create(subsystems[i], tmp, &existed)) {
ERROR("Error creating cgroup %s:%s", subsystems[i], result);
cleanup_cgroups(tmp);
return false;
}
if (existed == 1)
goto next;
}
// success
cgroup_path = strdup(tmp);
if (!cgroup_path) {
cleanup_cgroups(tmp);
return false;
}
handler->cgroup_info->data = cgroup_path;
return true;
next:
cleanup_cgroups(tmp);
index++;
goto again;
}
static inline bool cgm_create(void *hdata)
{
struct cgm_data *d = hdata;
char **slist = subsystems;
int i, index=0, baselen, ret;
int32_t existed;
char result[MAXPATHLEN], *tmp, *cgroup_path;
if (!d)
return false;
// XXX we should send a hint to the cgmanager that when these
// cgroups become empty they should be deleted. Requires a cgmanager
// extension
memset(result, 0, MAXPATHLEN);
tmp = lxc_string_replace("%n", d->name, d->cgroup_pattern);
if (!tmp)
goto bad;
if (strlen(tmp) >= MAXPATHLEN) {
free(tmp);
goto bad;
}
strcpy(result, tmp);
baselen = strlen(result);
free(tmp);
tmp = result;
while (*tmp == '/')
tmp++;
again:
if (index == 100) { // turn this into a warn later
ERROR("cgroup error? 100 cgroups with this name already running");
goto bad;
}
if (index) {
ret = snprintf(result+baselen, MAXPATHLEN-baselen, "-%d", index);
if (ret < 0 || ret >= MAXPATHLEN-baselen)
goto bad;
}
existed = 0;
if (cgm_supports_multiple_controllers)
slist = subsystems_inone;
for (i = 0; slist[i]; i++) {
if (!lxc_cgmanager_create(slist[i], tmp, &existed)) {
ERROR("Error creating cgroup %s:%s", slist[i], result);
cleanup_cgroups(tmp);
goto bad;
}
if (existed == 1)
goto next;
}
// success
cgroup_path = strdup(tmp);
if (!cgroup_path) {
cleanup_cgroups(tmp);
goto bad;
}
d->cgroup_path = cgroup_path;
cgm_dbus_disconnect();
return true;
next:
index++;
goto again;
bad:
cgm_dbus_disconnect();
return false;
}
