static ssize_t upgrade_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct partition_package *package;
int err;
size_t size;
//int len;
package = kzalloc(count, GFP_KERNEL);
if (!package) {
err = -ENOMEM;
part_err("upgrade_proc_write: fail to malloc package\n");
goto fail_malloc;
}
size = simple_write_to_buffer(package, sizeof(*package), ppos, buf, count);
if (size < 0) {
err = size;
part_err("upgrade_proc_write: fail to receive data(%zu)\n", size);
goto out;
}
err = upgrade_handler(package, size);
out:
kfree(package);
fail_malloc:
if (err)
return err;
else
return count;
}
static void run_master(void)
{
unsigned id;
size_t running = worker_processes;
master_selfwake = mog_selfwake_new();
siginit(master_wakeup_handler);
for (id = 0; id < worker_processes; id++)
fork_worker(id);
while (running > 0) {
mog_selfwake_wait(master_selfwake);
if (sigchld_hit)
sigchld_handler();
if (do_upgrade)
upgrade_handler();
if (do_exit)
running = mog_kill_each_worker(SIGQUIT);
}
}
static void main_worker_loop(const pid_t parent)
{
mog_cancel_disable(); /* mog_idleq_wait() now relies on this */
while (parent == 0 || parent == getppid()) {
mog_notify_wait(have_mgmt);
if (sigchld_hit)
sigchld_handler();
if (do_upgrade)
upgrade_handler();
if (do_exit)
cmogstored_exit();
if (have_mgmt)
mog_mnt_refresh();
else if (have_mgmt && !iostat_running && !do_exit)
/*
* maybe iostat was not installed/available/usable at
* startup, but became usable later
*/
iostat_running = mog_iostat_respawn(0);
}
syslog(LOG_INFO, "parent=%d abandoned us, dying", parent);
cmogstored_exit();
}