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/*
* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
* SPDX-FileCopyrightText: 2024 Kienan Stewart <kstewart@efficios.com>
*/
#ifndef LTTNG_WRAPPER_FILE_REF_H
#define LTTNG_WRAPPER_FILE_REF_H
#include <linux/file.h>
#include <linux/fs.h>
#include <lttng/kernel-version.h>
#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(6,13,0))
#include <linux/file_ref.h>
static inline __must_check
bool lttng_file_ref_get(struct file *file)
{
return file_ref_get(&file->f_ref);
}
static inline __must_check
bool lttng_file_ref_put(struct file *file)
{
return file_ref_put(&file->f_ref);
}
#else
static inline __must_check
bool lttng_file_ref_get(struct file *file)
{
atomic_long_add_unless(&file->f_count, 1, LONG_MAX);
return true;
}
static inline __must_check
bool lttng_file_ref_put(struct file *file)
{
atomic_long_dec(&file->f_count);
return true;
}
#endif
#endif /* LTTNG_WRAPPER_FILE_REF_H */
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