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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <poll.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/types.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_full(int fd, const void *buf, size_t nbytes, usec_t timeout);
static inline int loop_write(int fd, const void *buf, size_t nbytes) {
return loop_write_full(fd, buf, nbytes, 0);
}
int pipe_eof(int fd);
int ppoll_usec(struct pollfd *fds, size_t nfds, usec_t timeout);
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);
static inline bool FILE_SIZE_VALID(uint64_t l) {
/* ftruncate() and friends take an unsigned file size, but actually cannot deal with file sizes larger than
* 2^63 since the kernel internally handles it as signed value. This call allows checking for this early. */
return (l >> 63) == 0;
}
static inline bool FILE_SIZE_VALID_OR_INFINITY(uint64_t l) {
/* Same as above, but allows one extra value: -1 as indication for infinity. */
if (l == UINT64_MAX)
return true;
return FILE_SIZE_VALID(l);
}
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