static void
write_uid_gid_map (uid_t sandbox_uid,
uid_t parent_uid,
uid_t sandbox_gid,
uid_t parent_gid,
bool deny_groups)
{
cleanup_free char *uid_map = NULL;
cleanup_free char *gid_map = NULL;
uid_map = xasprintf ("%d %d 1\n", sandbox_uid, parent_uid);
if (write_file_at (proc_fd, "self/uid_map", uid_map) != 0)
die_with_error ("setting up uid map");
if (deny_groups &&
write_file_at (proc_fd, "self/setgroups", "deny\n") != 0)
die_with_error ("error writing to setgroups");
gid_map = xasprintf ("%d %d 1\n", sandbox_gid, parent_gid);
if (write_file_at (proc_fd, "self/gid_map", gid_map) != 0)
die_with_error ("setting up gid map");
}
static int append_to_file(char* path, void* buffer, int len)
{
return write_file_at(path, -1, buffer, len);
}
static int update_history_values_header(int count)
{
g_history_values_header.items_count += count;
return write_file_at(g_history_path, g_history_values_header_offset,
&g_history_values_header, sizeof(history_values_header_t));
}
static int update_statistics_header()
{
g_statistics_header.items_count++;
return write_file_at(g_statistics_path, g_statistics_header_offset,
&g_statistics_header, sizeof(statistics_header_t));
}
