[lttng-modules.git] / wrapper / fdtable.h

/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
 *
 * wrapper/fdtable.h
 *
 * Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _LTTNG_WRAPPER_FDTABLE_H
#define _LTTNG_WRAPPER_FDTABLE_H

#include <lttng-kernel-version.h>
#include <linux/fdtable.h>
#include <linux/sched.h>

#if ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,11,0)) || \
	LTTNG_KERNEL_RANGE(5,10,220, 5,11,0))
static inline
struct file *lttng_lookup_fd_rcu(unsigned int fd)
{
	return lookup_fd_rcu(fd);
}
#else
static inline
struct file *lttng_lookup_fd_rcu(unsigned int fd)
{
	return fcheck(fd);
}
#endif

#if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,7,0))

int lttng_iterate_fd(struct files_struct *files,
		unsigned int first,
		int (*cb)(const void *, struct file *, unsigned int),
		const void *ctx);

#else

/*
 * iterate_fd() appeared at commit
 * c3c073f808b22dfae15ef8412b6f7b998644139a in the Linux kernel (first
 * released kernel: v3.7).
 */
#define lttng_iterate_fd	iterate_fd

#endif

#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,4,0))

static inline bool lttng_close_on_exec(int fd, const struct fdtable *fdt)
{
	return close_on_exec(fd, fdt);
}

#else

static inline bool lttng_close_on_exec(int fd, const struct fdtable *fdt)
{
	return FD_ISSET(fd, fdt->close_on_exec);
}

#endif

#endif /* _LTTNG_WRAPPER_FDTABLE_H */
Commit	Line	Data
	1	/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
	2	*
	3	* wrapper/fdtable.h
	4	*
	5	* Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	6	*/
	7
	8	#ifndef _LTTNG_WRAPPER_FDTABLE_H
	9	#define _LTTNG_WRAPPER_FDTABLE_H
	10
	11	#include <lttng-kernel-version.h>
	12	#include <linux/fdtable.h>
	13	#include <linux/sched.h>
	14
	15	#if ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,11,0)) \|\| \
	16	LTTNG_KERNEL_RANGE(5,10,220, 5,11,0))
	17	static inline
	18	struct file *lttng_lookup_fd_rcu(unsigned int fd)
	19	{
	20	return lookup_fd_rcu(fd);
	21	}
	22	#else
	23	static inline
	24	struct file *lttng_lookup_fd_rcu(unsigned int fd)
	25	{
	26	return fcheck(fd);
	27	}
	28	#endif
	29
	30	#if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,7,0))
	31
	32	int lttng_iterate_fd(struct files_struct *files,
	33	unsigned int first,
	34	int (cb)(const void , struct file *, unsigned int),
	35	const void *ctx);
	36
	37	#else
	38
	39	/*
	40	* iterate_fd() appeared at commit
	41	* c3c073f808b22dfae15ef8412b6f7b998644139a in the Linux kernel (first
	42	* released kernel: v3.7).
	43	*/
	44	#define lttng_iterate_fd iterate_fd
	45
	46	#endif
	47
	48	#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,4,0))
	49
	50	static inline bool lttng_close_on_exec(int fd, const struct fdtable *fdt)
	51	{
	52	return close_on_exec(fd, fdt);
	53	}
	54
	55	#else
	56
	57	static inline bool lttng_close_on_exec(int fd, const struct fdtable *fdt)
	58	{
	59	return FD_ISSET(fd, fdt->close_on_exec);
	60	}
	61
	62	#endif
	63
	64	#endif /* _LTTNG_WRAPPER_FDTABLE_H */