/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <stdbool.h> #include <sys/types.h> #include <sys/uio.h> #include "time-util.h" int flush_fd(int fd); ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll); int loop_read_exact(int fd, void *buf, size_t nbytes, bool do_poll); int loop_write(int fd, const void *buf, size_t nbytes, bool do_poll); int pipe_eof(int fd); int fd_wait_for_event(int fd, int event, usec_t timeout); ssize_t sparse_write(int fd, const void *p, size_t sz, size_t run_length); #define IOVEC_SET_STRING(i, s) \ do { \ struct iovec *_i = &(i); \ char *_s = (char *)(s); \ _i->iov_base = _s; \ _i->iov_len = strlen(_s); \ } while(false) static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) { unsigned j; size_t r = 0; for (j = 0; j < n; j++) r += i[j].iov_len; return r; } static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) { unsigned j; for (j = 0; j < n; j++) { size_t sub; if (_unlikely_(k <= 0)) break; sub = MIN(i[j].iov_len, k); i[j].iov_len -= sub; i[j].iov_base = (uint8_t*) i[j].iov_base + sub; k -= sub; } return k; }