static int
snapshot_sync(struct volume *v)
{
struct file_header sentinel, conf;
int next, block = 0;
uint32_t seq;
next = snapshot_next_free(v, &seq);
block = config_find(v, &conf, &sentinel);
if (is_config(&conf) && conf.seq != seq) {
conf.magic = 0;
volume_erase(v, next * v->block_size, 2 * v->block_size);
}
if (is_config(&sentinel) && (sentinel.seq != seq)) {
sentinel.magic = 0;
volume_erase(v, block * v->block_size, v->block_size);
}
if (!is_config(&conf) && !is_config(&sentinel)) {
// ULOG_ERR("no config found\n");
} else if (((is_config(&conf) && is_config(&sentinel)) &&
(memcmp(conf.md5, sentinel.md5, sizeof(conf.md5)) || (conf.seq != sentinel.seq))) ||
(is_config(&conf) && !is_config(&sentinel))) {
uint32_t seq;
int next = snapshot_next_free(v, &seq);
int ret = snapshot_read_file(v, next, "/tmp/config.tar.gz", CONF);
if (ret > 0) {
if (sentinel_write(v, conf.seq))
ULOG_ERR("failed to write sentinel data");
}
} else if (!is_config(&conf) && is_config(&sentinel) && next) {
int ret = snapshot_read_file(v, block, "/tmp/config.tar.gz", CONF);
if (ret > 0)
if (volatile_write(v, sentinel.seq))
ULOG_ERR("failed to write sentinel data");
} else
ULOG_INFO("config in sync\n");
unlink("/tmp/config.tar.gz");
return 0;
}
struct usb_interface_descriptor *first_interface(const struct usb_config_descriptor *d, int check_descr)
{
char *ptr = (char*)d;
if (check_descr && !is_config(d)) {
return 0;
}
ptr += d->bLength;
return (struct usb_interface_descriptor *)ptr;
}
bool ignore(struct file *file)
{
if ((file->is_config) ||
is_config(file->filename) || // ideally we trust the manifest but short term reapply check here
(file->is_state) ||
is_state(file->filename) || // ideally we trust the manifest but short term reapply check here
(file->is_boot && fix && file->is_deleted) || // shouldn't happen
(file->is_boot && !fix && !file->is_deleted) || // default ignore
(ignore_orphans && file->is_orphan)) {
update_skip++;
file->do_not_update = 1;
return true;
}
return false;
}
/* Determines whether or not FILE should be ignored for this swupd action. Note
* that boot files are ignored only if they are marked as deleted; this does
* not happen in current manifests produced by swupd-server, but this check is
* enabled in case swupd-server ever allows for deleted boot files in manifests
* in the future.
*/
bool ignore(struct file *file)
{
if ((OS_IS_STATELESS && file->is_config) ||
(OS_IS_STATELESS && is_config(file->filename)) || // ideally we trust the manifest but short term reapply check here
(file->is_state) ||
is_state(file->filename) || // ideally we trust the manifest but short term reapply check here
(file->is_boot && file->is_deleted) ||
(ignore_orphans && file->is_orphan) ||
(file->is_ghosted)) {
update_skip++;
file->do_not_update = 1;
return true;
}
return false;
}
static void config_file_heuristics(struct file *file)
{
if (is_config(file->filename)) {
file->is_config = 1;
}
}