77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdbool.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include "time-util.h"
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int flush_fd(int fd);
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ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll);
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int loop_read_exact(int fd, void *buf, size_t nbytes, bool do_poll);
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int loop_write(int fd, const void *buf, size_t nbytes, bool do_poll);
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int pipe_eof(int fd);
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int fd_wait_for_event(int fd, int event, usec_t timeout);
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ssize_t sparse_write(int fd, const void *p, size_t sz, size_t run_length);
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#define IOVEC_SET_STRING(i, s) \
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do { \
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struct iovec *_i = &(i); \
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char *_s = (char *)(s); \
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_i->iov_base = _s; \
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_i->iov_len = strlen(_s); \
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} while(false)
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static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) {
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unsigned j;
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size_t r = 0;
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for (j = 0; j < n; j++)
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r += i[j].iov_len;
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return r;
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}
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static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) {
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unsigned j;
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for (j = 0; j < n; j++) {
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size_t sub;
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if (_unlikely_(k <= 0))
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break;
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sub = MIN(i[j].iov_len, k);
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i[j].iov_len -= sub;
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i[j].iov_base = (uint8_t*) i[j].iov_base + sub;
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k -= sub;
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}
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return k;
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}
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