/* runcap - run program and capture its output Copyright (C) 2017 Sergey Poznyakoff Runcap is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Runcap is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Runcap. If not, see . */ #include #include #include #include "runcap.h" off_t runcap_tell(struct runcap *rc, int sd) { struct stream_capture *cap; off_t off; cap = runcap_get_capture(rc, sd); if (!cap) return -1; if (cap->sc_storfd != -1) { off = lseek(cap->sc_storfd, 0, SEEK_CUR); if (off == -1) return -1; off -= cap->sc_level; } else off = 0; return off + cap->sc_cur; }