Fix: relayd: rotation failure for multi-domain session
[lttng-tools.git] / src / common / readwrite.h
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1#ifndef LTTNG_COMMON_READWRITE_H
2#define LTTNG_COMMON_READWRITE_H
3
4/*
ab5be9fa 5 * Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
33b14136 6 *
ab5be9fa 7 * SPDX-License-Identifier: LGPL-2.1-only
33b14136 8 *
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9 */
10
11#include <unistd.h>
73ec1cf9 12#include <common/macros.h>
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13
14/*
15 * lttng_read and lttng_write take care of EINTR and partial read/write.
16 * Upon success, they return the "count" received as parameter.
17 * They can return a negative value if an error occurs.
18 * If a value lower than the requested "count" is returned, it means an
83f4233d 19 * error occurred.
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20 * The error can be checked by querying errno.
21 */
22ssize_t lttng_read(int fd, void *buf, size_t count);
23ssize_t lttng_write(int fd, const void *buf, size_t count);
24
25#endif /* LTTNG_COMMON_READWRITE_H */
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