[lttng-modules.git] / lttng-kernel-version.h

#ifndef _LTTNG_KERNEL_VERSION_H
#define _LTTNG_KERNEL_VERSION_H

/*
 * lttng-kernel-version.h
 *
 * Contains helpers to check more complex kernel version conditions.
 *
 * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * This library 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; only
 * version 2.1 of the License.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <linux/version.h>

/*
 * The following defines are extracted from the toplevel Linux Makefile and
 * passed on the command line -with '-D'.
 */

#ifndef LTTNG_LINUX_MAJOR
#define LTTNG_LINUX_MAJOR 0
#endif

#ifndef LTTNG_LINUX_MINOR
#define LTTNG_LINUX_MINOR 0
#endif

#ifndef LTTNG_LINUX_PATCH
#define LTTNG_LINUX_PATCH 0
#endif

/*
 * Some stable releases have overflowed the 8bits allocated to the sublevel in
 * the version code. To determine if the current kernel is affected, use the
 * sublevel version from the Makefile. This is currently true for the 4.4.256
 * and 4.9.256 stable releases.
 *
 * When the sublevel has overflowed, use the values from the Makefile instead
 * of LINUX_VERSION_CODE from the kernel headers and allocate 16bits.
 * Otherwise, keep using the version code from the headers to minimise the
 * behavior change and avoid regressions.
 *
 * Cast the result to uint64_t to prevent overflowing when we append distro
 * specific version information.
 */
#if (LTTNG_LINUX_PATCH >= 256)

#define LTTNG_KERNEL_VERSION(a, b, c) \
	((((a) << 24) + ((b) << 16) + (c)) * 1ULL)

#define LTTNG_LINUX_VERSION_CODE \
	LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH)

#else

#define LTTNG_KERNEL_VERSION(a, b, c) (KERNEL_VERSION(a, b, c) * 1ULL)
#define LTTNG_LINUX_VERSION_CODE (LINUX_VERSION_CODE * 1ULL)

#endif

#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33))
#include <generated/utsrelease.h>
#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */
#include <linux/utsrelease.h>
#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */

/*
 * This macro checks if the kernel version is between the two specified
 * versions (lower limit inclusive, upper limit exclusive).
 */
#define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \
	(LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \
	 LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high))

/* Ubuntu */

#define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))

#ifdef UTS_UBUNTU_RELEASE_ABI
#define LTTNG_UBUNTU_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI)
#else
#define LTTNG_UBUNTU_VERSION_CODE 	0
#endif

#define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
		a_high, b_high, c_high, d_high) \
	(LTTNG_UBUNTU_VERSION_CODE >= \
		LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
		LTTNG_UBUNTU_VERSION_CODE < \
		LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high))

/* Debian */

#define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f))

#ifdef DEBIAN_API_VERSION
#define LTTNG_DEBIAN_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION)
#else
#define LTTNG_DEBIAN_VERSION_CODE	0
#endif

#define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
		a_high, b_high, c_high, d_high, e_high, f_high) \
	(LTTNG_DEBIAN_VERSION_CODE >= \
		LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
		LTTNG_DEBIAN_VERSION_CODE < \
		LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))

#define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 10000) + ((e) * 100) + (f))

/* RHEL */

#ifdef RHEL_API_VERSION
#define LTTNG_RHEL_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + RHEL_API_VERSION)
#else
#define LTTNG_RHEL_VERSION_CODE		0
#endif

#define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
		a_high, b_high, c_high, d_high, e_high, f_high) \
	(LTTNG_RHEL_VERSION_CODE >= \
		LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
		LTTNG_RHEL_VERSION_CODE < \
		LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))

/* SUSE Linux enterprise */

#define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 100000) + ((e) * 100) + (f))

#ifdef SLE_API_VERSION
#define LTTNG_SLE_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + SLE_API_VERSION)
#else
#define LTTNG_SLE_VERSION_CODE 	0
#endif

#define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
		a_high, b_high, c_high, d_high, e_high, f_high) \
	(LTTNG_SLE_VERSION_CODE >= \
		LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
		LTTNG_SLE_VERSION_CODE < \
		LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))

/* Fedora */

#define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \
        (((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d))

#ifdef FEDORA_REVISION_VERSION
#define LTTNG_FEDORA_VERSION_CODE \
        ((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION)
#else
#define LTTNG_FEDORA_VERSION_CODE         0
#endif

#define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
                a_high, b_high, c_high, d_high) \
        (LTTNG_FEDORA_VERSION_CODE >= \
                LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
                LTTNG_FEDORA_VERSION_CODE < \
                LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high))

/* RT patch */

#define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))

#ifdef RT_PATCH_VERSION
#define LTTNG_RT_VERSION_CODE \
	((LTTNG_LINUX_VERSION_CODE << 16) + RT_PATCH_VERSION)
#else
#define LTTNG_RT_VERSION_CODE 	0
#endif

#define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
		a_high, b_high, c_high, d_high) \
	(LTTNG_RT_VERSION_CODE >= \
		LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
		LTTNG_RT_VERSION_CODE < \
		LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high))

#endif /* _LTTNG_KERNEL_VERSION_H */
Commit	Line	Data
5fa38800 MD	1	#ifndef _LTTNG_KERNEL_VERSION_H
	2	#define _LTTNG_KERNEL_VERSION_H
	3
	4	/*
	5	* lttng-kernel-version.h
	6	*
	7	* Contains helpers to check more complex kernel version conditions.
	8	*
	9	* Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	10	*
	11	* This library is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU Lesser General Public
	13	* License as published by the Free Software Foundation; only
	14	* version 2.1 of the License.
	15	*
	16	* This library is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	19	* Lesser General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU Lesser General Public
	22	* License along with this library; if not, write to the Free Software
	23	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	24	*/
	25
	26	#include <linux/version.h>
9f61c55f	27
82151df0 MJ	28	/*
	29	* The following defines are extracted from the toplevel Linux Makefile and
	30	* passed on the command line -with '-D'.
	31	*/
	32
	33	#ifndef LTTNG_LINUX_MAJOR
	34	#define LTTNG_LINUX_MAJOR 0
	35	#endif
	36
	37	#ifndef LTTNG_LINUX_MINOR
	38	#define LTTNG_LINUX_MINOR 0
	39	#endif
	40
	41	#ifndef LTTNG_LINUX_PATCH
	42	#define LTTNG_LINUX_PATCH 0
	43	#endif
	44
	45	/*
	46	* Some stable releases have overflowed the 8bits allocated to the sublevel in
	47	* the version code. To determine if the current kernel is affected, use the
	48	* sublevel version from the Makefile. This is currently true for the 4.4.256
	49	* and 4.9.256 stable releases.
	50	*
	51	* When the sublevel has overflowed, use the values from the Makefile instead
	52	* of LINUX_VERSION_CODE from the kernel headers and allocate 16bits.
	53	* Otherwise, keep using the version code from the headers to minimise the
	54	* behavior change and avoid regressions.
1dc55aa6 MJ	55	*
	56	* Cast the result to uint64_t to prevent overflowing when we append distro
	57	* specific version information.
82151df0 MJ	58	*/
	59	#if (LTTNG_LINUX_PATCH >= 256)
	60
	61	#define LTTNG_KERNEL_VERSION(a, b, c) \
1dc55aa6	62	((((a) << 24) + ((b) << 16) + (c)) * 1ULL)
82151df0 MJ	63
	64	#define LTTNG_LINUX_VERSION_CODE \
	65	LTTNG_KERNEL_VERSION(LTTNG_LINUX_MAJOR, LTTNG_LINUX_MINOR, LTTNG_LINUX_PATCH)
	66
	67	#else
	68
1dc55aa6 MJ	69	#define LTTNG_KERNEL_VERSION(a, b, c) (KERNEL_VERSION(a, b, c) * 1ULL)
1dc55aa6 MJ	70	#define LTTNG_LINUX_VERSION_CODE (LINUX_VERSION_CODE * 1ULL)
360d3efe	71
82151df0 MJ	72	#endif
82151df0 MJ	73
360d3efe	74	#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33))
9f61c55f	75	#include <generated/utsrelease.h>
360d3efe	76	#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */
7b10d281	77	#include <linux/utsrelease.h>
360d3efe	78	#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) */
5fa38800 MD	79
	80	/*
	81	* This macro checks if the kernel version is between the two specified
144bbfd5	82	* versions (lower limit inclusive, upper limit exclusive).
5fa38800 MD	83	*/
5fa38800 MD	84	#define LTTNG_KERNEL_RANGE(a_low, b_low, c_low, a_high, b_high, c_high) \
360d3efe MJ	85	(LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(a_low, b_low, c_low) && \
360d3efe MJ	86	LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(a_high, b_high, c_high))
5fa38800	87
c94ac1ac MJ	88	/* Ubuntu */
c94ac1ac MJ	89
3e5941df	90	#define LTTNG_UBUNTU_KERNEL_VERSION(a, b, c, d) \
07842fef	91	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))
3e5941df	92
05732a66	93	#ifdef UTS_UBUNTU_RELEASE_ABI
3e5941df	94	#define LTTNG_UBUNTU_VERSION_CODE \
07842fef	95	((LTTNG_LINUX_VERSION_CODE << 16) + UTS_UBUNTU_RELEASE_ABI)
05732a66 MD	96	#else
	97	#define LTTNG_UBUNTU_VERSION_CODE 0
	98	#endif
3e5941df JD	99
	100	#define LTTNG_UBUNTU_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
	101	a_high, b_high, c_high, d_high) \
05732a66	102	(LTTNG_UBUNTU_VERSION_CODE >= \
3e5941df JD	103	LTTNG_UBUNTU_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
	104	LTTNG_UBUNTU_VERSION_CODE < \
	105	LTTNG_UBUNTU_KERNEL_VERSION(a_high, b_high, c_high, d_high))
	106
c94ac1ac MJ	107	/* Debian */
c94ac1ac MJ	108
72e6c528	109	#define LTTNG_DEBIAN_KERNEL_VERSION(a, b, c, d, e, f) \
360d3efe	110	(((LTTNG_KERNEL_VERSION(a, b, c)) * 1000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
72e6c528	111
05732a66	112	#ifdef DEBIAN_API_VERSION
72e6c528	113	#define LTTNG_DEBIAN_VERSION_CODE \
360d3efe	114	((LTTNG_LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION)
05732a66 MD	115	#else
	116	#define LTTNG_DEBIAN_VERSION_CODE 0
	117	#endif
72e6c528 MD	118
	119	#define LTTNG_DEBIAN_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
	120	a_high, b_high, c_high, d_high, e_high, f_high) \
05732a66	121	(LTTNG_DEBIAN_VERSION_CODE >= \
72e6c528 MD	122	LTTNG_DEBIAN_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
	123	LTTNG_DEBIAN_VERSION_CODE < \
	124	LTTNG_DEBIAN_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
	125
c94ac1ac	126	#define LTTNG_RHEL_KERNEL_VERSION(a, b, c, d, e, f) \
a7781f7b	127	(((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
c94ac1ac MJ	128
c94ac1ac MJ	129	/* RHEL */
f30ae671	130
c94ac1ac	131	#ifdef RHEL_API_VERSION
f30ae671	132	#define LTTNG_RHEL_VERSION_CODE \
a7781f7b	133	((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + RHEL_API_VERSION)
f30ae671 MD	134	#else
	135	#define LTTNG_RHEL_VERSION_CODE 0
	136	#endif
	137
c94ac1ac MJ	138	#define LTTNG_RHEL_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
c94ac1ac MJ	139	a_high, b_high, c_high, d_high, e_high, f_high) \
f30ae671	140	(LTTNG_RHEL_VERSION_CODE >= \
c94ac1ac	141	LTTNG_RHEL_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
f30ae671	142	LTTNG_RHEL_VERSION_CODE < \
c94ac1ac MJ	143	LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
c94ac1ac MJ	144
ce66b486 MJ	145	/* SUSE Linux enterprise */
	146
	147	#define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \
e362ba5e	148	(((LTTNG_KERNEL_VERSION(a, b, c)) * 100000000ULL) + ((d) * 100000) + ((e) * 100) + (f))
ce66b486 MJ	149
	150	#ifdef SLE_API_VERSION
	151	#define LTTNG_SLE_VERSION_CODE \
e362ba5e	152	((LTTNG_LINUX_VERSION_CODE * 100000000ULL) + SLE_API_VERSION)
ce66b486 MJ	153	#else
	154	#define LTTNG_SLE_VERSION_CODE 0
	155	#endif
	156
	157	#define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
	158	a_high, b_high, c_high, d_high, e_high, f_high) \
	159	(LTTNG_SLE_VERSION_CODE >= \
	160	LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
	161	LTTNG_SLE_VERSION_CODE < \
	162	LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
	163
26d6737c LG	164	/* Fedora */
	165
	166	#define LTTNG_FEDORA_KERNEL_VERSION(a, b, c, d) \
360d3efe	167	(((LTTNG_KERNEL_VERSION(a, b, c)) * 10000ULL) + (d))
26d6737c LG	168
	169	#ifdef FEDORA_REVISION_VERSION
	170	#define LTTNG_FEDORA_VERSION_CODE \
360d3efe	171	((LTTNG_LINUX_VERSION_CODE * 10000ULL) + FEDORA_REVISION_VERSION)
26d6737c LG	172	#else
	173	#define LTTNG_FEDORA_VERSION_CODE 0
	174	#endif
	175
	176	#define LTTNG_FEDORA_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
	177	a_high, b_high, c_high, d_high) \
	178	(LTTNG_FEDORA_VERSION_CODE >= \
	179	LTTNG_FEDORA_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
	180	LTTNG_FEDORA_VERSION_CODE < \
	181	LTTNG_FEDORA_KERNEL_VERSION(a_high, b_high, c_high, d_high))
	182
c94ac1ac	183	/* RT patch */
f30ae671	184
b4c8e4d3	185	#define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
ea14d581	186	(((LTTNG_KERNEL_VERSION(a, b, c)) << 16) + (d))
b4c8e4d3 MJ	187
	188	#ifdef RT_PATCH_VERSION
	189	#define LTTNG_RT_VERSION_CODE \
ea14d581	190	((LTTNG_LINUX_VERSION_CODE << 16) + RT_PATCH_VERSION)
b4c8e4d3 MJ	191	#else
	192	#define LTTNG_RT_VERSION_CODE 0
	193	#endif
	194
	195	#define LTTNG_RT_KERNEL_RANGE(a_low, b_low, c_low, d_low, \
	196	a_high, b_high, c_high, d_high) \
	197	(LTTNG_RT_VERSION_CODE >= \
	198	LTTNG_RT_KERNEL_VERSION(a_low, b_low, c_low, d_low) && \
	199	LTTNG_RT_VERSION_CODE < \
	200	LTTNG_RT_KERNEL_VERSION(a_high, b_high, c_high, d_high))
	201
5fa38800	202	#endif /* _LTTNG_KERNEL_VERSION_H */