static int do_freeze_thaw(bool freeze, const char *name, const char *lxcpath)
{
int ret;
char v[100];
const char *state = freeze ? "FROZEN" : "THAWED";
size_t state_len = 6;
lxc_state_t new_state = freeze ? FROZEN : THAWED;
ret = lxc_cgroup_set("freezer.state", state, name, lxcpath);
if (ret < 0) {
ERROR("Failed to freeze %s", name);
return -1;
}
for (;;) {
ret = lxc_cgroup_get("freezer.state", v, sizeof(v), name, lxcpath);
if (ret < 0) {
ERROR("Failed to get freezer state of %s", name);
return -1;
}
v[99] = '\0';
v[lxc_char_right_gc(v, strlen(v))] = '\0';
ret = strncmp(v, state, state_len);
if (ret == 0) {
lxc_cmd_serve_state_clients(name, lxcpath, new_state);
lxc_monitor_send_state(name, new_state, lxcpath);
return 0;
}
sleep(1);
}
}
/*
* These are copied from conf.c. However as conf.c will be moved to using
* the callback system, they can be pulled from there eventually, so we
* don't need to pollute utils.c with these low level functions
*/
static int find_fstype_cb(char* buffer, void *data)
{
struct cbarg {
const char *rootfs;
const char *target;
int mntopt;
} *cbarg = data;
char *fstype;
/* we don't try 'nodev' entries */
if (strstr(buffer, "nodev"))
return 0;
fstype = buffer;
fstype += lxc_char_left_gc(fstype, strlen(fstype));
fstype[lxc_char_right_gc(fstype, strlen(fstype))] = '\0';
DEBUG("trying to mount '%s'->'%s' with fstype '%s'",
cbarg->rootfs, cbarg->target, fstype);
if (mount(cbarg->rootfs, cbarg->target, fstype, cbarg->mntopt, NULL)) {
DEBUG("mount failed with error: %s", strerror(errno));
return 0;
}
INFO("mounted '%s' on '%s', with fstype '%s'",
cbarg->rootfs, cbarg->target, fstype);
return 1;
}
lxc_state_t freezer_state(const char *name, const char *lxcpath)
{
int ret;
char v[100];
ret = lxc_cgroup_get("freezer.state", v, sizeof(v), name, lxcpath);
if (ret < 0)
return -1;
v[99] = '\0';
v[lxc_char_right_gc(v, strlen(v))] = '\0';
return lxc_str2state(v);
}
/*
* These are copied from conf.c. However as conf.c will be moved to using
* the callback system, they can be pulled from there eventually, so we
* don't need to pollute utils.c with these low level functions
*/
int find_fstype_cb(char *buffer, void *data)
{
struct cbarg {
const char *rootfs;
const char *target;
const char *options;
} *cbarg = data;
unsigned long mntflags;
char *mntdata;
char *fstype;
/* we don't try 'nodev' entries */
if (strstr(buffer, "nodev"))
return 0;
fstype = buffer;
fstype += lxc_char_left_gc(fstype, strlen(fstype));
fstype[lxc_char_right_gc(fstype, strlen(fstype))] = '\0';
DEBUG("Trying to mount \"%s\"->\"%s\" with FSType \"%s\"", cbarg->rootfs,
cbarg->target, fstype);
if (parse_mntopts(cbarg->options, &mntflags, &mntdata) < 0) {
free(mntdata);
return 0;
}
if (mount(cbarg->rootfs, cbarg->target, fstype, mntflags, mntdata)) {
SYSDEBUG("Failed to mount");
free(mntdata);
return 0;
}
free(mntdata);
INFO("Mounted \"%s\" on \"%s\", with FSType \"%s\"", cbarg->rootfs,
cbarg->target, fstype);
return 1;
}