80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/*-*- 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 <stddef.h>
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
#include <sys/uio.h>
|
|
|
|
#include "macro.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;
|
|
}
|