[mirror_lxc.git] / src / lxc / macro.h

/* liblxcapi
 *
 * Copyright © 2018 Christian Brauner <christian.brauner@ubuntu.com>.
 * Copyright © 2018 Canonical Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2, as
 * published by the Free Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef __LXC_MACRO_H
#define __LXC_MACRO_H

#include <asm/types.h>
#include <limits.h>
#include <linux/if_link.h>
#include <linux/loop.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/types.h>
#include <stdint.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>

#ifndef PATH_MAX
#define PATH_MAX 4096
#endif

/* Define __S_ISTYPE if missing from the C library. */
#ifndef __S_ISTYPE
#define __S_ISTYPE(mode, mask) (((mode)&S_IFMT) == (mask))
#endif

/* capabilities */
#ifndef CAP_SYS_ADMIN
#define CAP_SYS_ADMIN 21
#endif

#ifndef CAP_SETFCAP
#define CAP_SETFCAP 31
#endif

#ifndef CAP_MAC_OVERRIDE
#define CAP_MAC_OVERRIDE 32
#endif

#ifndef CAP_MAC_ADMIN
#define CAP_MAC_ADMIN 33
#endif

#ifndef CAP_SETUID
#define CAP_SETUID 7
#endif

#ifndef CAP_SETGID
#define CAP_SETGID 6
#endif

/* prctl */
#ifndef PR_CAPBSET_READ
#define PR_CAPBSET_READ 23
#endif

#ifndef PR_CAPBSET_DROP
#define PR_CAPBSET_DROP 24
#endif

/* Control the ambient capability set */
#ifndef PR_CAP_AMBIENT
#define PR_CAP_AMBIENT 47
#endif

#ifndef PR_CAP_AMBIENT_IS_SET
#define PR_CAP_AMBIENT_IS_SET 1
#endif

#ifndef PR_CAP_AMBIENT_RAISE
#define PR_CAP_AMBIENT_RAISE 2
#endif

#ifndef PR_CAP_AMBIENT_LOWER
#define PR_CAP_AMBIENT_LOWER 3
#endif

#ifndef PR_CAP_AMBIENT_CLEAR_ALL
#define PR_CAP_AMBIENT_CLEAR_ALL 4
#endif

#ifndef PR_SET_NO_NEW_PRIVS
#define PR_SET_NO_NEW_PRIVS 38
#endif

#ifndef PR_GET_NO_NEW_PRIVS
#define PR_GET_NO_NEW_PRIVS 39
#endif

/* filesystem magic values */
#ifndef CGROUP_SUPER_MAGIC
#define CGROUP_SUPER_MAGIC 0x27e0eb
#endif

#ifndef CGROUP2_SUPER_MAGIC
#define CGROUP2_SUPER_MAGIC 0x63677270
#endif

#ifndef NSFS_MAGIC
#define NSFS_MAGIC 0x6e736673
#endif

/* current overlayfs */
#ifndef OVERLAY_SUPER_MAGIC
#define OVERLAY_SUPER_MAGIC 0x794c7630
#endif

/* legacy overlayfs */
#ifndef OVERLAYFS_SUPER_MAGIC
#define OVERLAYFS_SUPER_MAGIC 0x794c764f
#endif

/* Calculate the number of chars needed to represent a given integer as a C
 * string. Include room for '-' to indicate negative numbers and the \0 byte.
 * This is based on systemd.
 */
#define INTTYPE_TO_STRLEN(type)                   \
	(2 + (sizeof(type) <= 1                   \
		  ? 3                             \
		  : sizeof(type) <= 2             \
			? 5                       \
			: sizeof(type) <= 4       \
			      ? 10                \
			      : sizeof(type) <= 8 \
				    ? 20          \
				    : sizeof(int[-2 * (sizeof(type) > 8)])))

/* Useful macros */
#define LXC_LINELEN 4096
#define LXC_IDMAPLEN 4096
#define LXC_MAX_BUFFER 4096

/* /proc/       =    6
 *                +
 * <pid-as-str> =   INTTYPE_TO_STRLEN(pid_t)
 *                +
 * /fd/         =    4
 *                +
 * <fd-as-str>  =   INTTYPE_TO_STRLEN(int)
 *                +
 * \0           =    1
 */
#define LXC_PROC_PID_FD_LEN \
	(6 + INTTYPE_TO_STRLEN(pid_t) + 4 + INTTYPE_TO_STRLEN(int) + 1)

/* /proc/        = 6
 *               +
 * <pid-as-str>  = INTTYPE_TO_STRLEN(pid_t)
 *               +
 * /status       = 7
 *               +
 * \0            = 1
 */
#define LXC_PROC_STATUS_LEN (6 + INTTYPE_TO_STRLEN(pid_t) + 7 + 1)

/* /proc/        = 6
 *               +
 * <pid-as-str>  = INTTYPE_TO_STRLEN(pid_t)
 *               +
 * /attr/        = 6
 *               +
 * /current      = 8
 *               +
 * \0            = 1
 */
#define LXC_LSMATTRLEN (6 + INTTYPE_TO_STRLEN(pid_t) + 6 + 8 + 1)

#define LXC_CMD_DATA_MAX (PATH_MAX * 2)

/* loop devices */
#ifndef LO_FLAGS_AUTOCLEAR
#define LO_FLAGS_AUTOCLEAR 4
#endif

#ifndef LOOP_CTL_GET_FREE
#define LOOP_CTL_GET_FREE 0x4C82
#endif

/* memfd_create() */
#ifndef MFD_CLOEXEC
#define MFD_CLOEXEC 0x0001U
#endif

#ifndef MFD_ALLOW_SEALING
#define MFD_ALLOW_SEALING 0x0002U
#endif

/**
 * BUILD_BUG_ON - break compile if a condition is true.
 * @condition: the condition which the compiler should know is false.
 *
 * If you have some code which relies on certain constants being equal, or
 * other compile-time-evaluated condition, you should use BUILD_BUG_ON to
 * detect if someone changes it.
 *
 * The implementation uses gcc's reluctance to create a negative array, but
 * gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments
 * to inline functions).  So as a fallback we use the optimizer; if it can't
 * prove the condition is false, it will cause a link error on the undefined
 * "__build_bug_on_failed".  This error message can be harder to track down
 * though, hence the two different methods.
 */
#ifndef __OPTIMIZE__
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2 * !!(condition)]))
#else
extern int __build_bug_on_failed;
#define BUILD_BUG_ON(condition)                              \
	do {                                                 \
		((void)sizeof(char[1 - 2 * !!(condition)])); \
		if (condition)                               \
			__build_bug_on_failed = 1;           \
	} while (0)
#endif

#define lxc_iterate_parts(__iterator, __splitme, __separators)                  \
	for (char *__p = NULL, *__it = strtok_r(__splitme, __separators, &__p); \
	     (__iterator = __it);                                               \
	     __iterator = __it = strtok_r(NULL, __separators, &__p))

#define prctl_arg(x) ((unsigned long)x)

/* networking */
#ifndef NETLINK_DUMP_STRICT_CHK
#define NETLINK_DUMP_STRICT_CHK 12
#endif

#ifndef SOL_NETLINK
#define SOL_NETLINK 270
#endif

#ifndef IFLA_LINKMODE
#define IFLA_LINKMODE 17
#endif

#ifndef IFLA_LINKINFO
#define IFLA_LINKINFO 18
#endif

#ifndef IFLA_NET_NS_PID
#define IFLA_NET_NS_PID 19
#endif

#ifndef IFLA_INFO_KIND
#define IFLA_INFO_KIND 1
#endif

#ifndef IFLA_VLAN_ID
#define IFLA_VLAN_ID 1
#endif

#ifndef IFLA_INFO_DATA
#define IFLA_INFO_DATA 2
#endif

#ifndef VETH_INFO_PEER
#define VETH_INFO_PEER 1
#endif

#ifndef IFLA_MACVLAN_MODE
#define IFLA_MACVLAN_MODE 1
#endif

#ifndef IFLA_NEW_NETNSID
#define IFLA_NEW_NETNSID 45
#endif

#ifdef IFLA_IF_NETNSID
#ifndef IFLA_TARGET_NETNSID
#define IFLA_TARGET_NETNSID = IFLA_IF_NETNSID
#endif
#else
#define IFLA_IF_NETNSID 46
#define IFLA_TARGET_NETNSID 46
#endif

#ifndef IFA_TARGET_NETNSID
#define IFA_TARGET_NETNSID 10
#endif

#ifndef IFLA_STATS
#define IFLA_STATS 7
#endif

#ifndef IFLA_STATS64
#define IFLA_STATS64 23
#endif

#ifndef RTM_NEWNSID
#define RTM_NEWNSID 88
#endif

#ifndef RTM_GETNSID
#define RTM_GETNSID 90
#endif

#ifndef NLMSG_ERROR
#define NLMSG_ERROR 0x2
#endif

#ifndef MACVLAN_MODE_PRIVATE
#define MACVLAN_MODE_PRIVATE 1
#endif

#ifndef MACVLAN_MODE_VEPA
#define MACVLAN_MODE_VEPA 2
#endif

#ifndef MACVLAN_MODE_BRIDGE
#define MACVLAN_MODE_BRIDGE 4
#endif

#ifndef MACVLAN_MODE_PASSTHRU
#define MACVLAN_MODE_PASSTHRU 8
#endif

/* Attributes of RTM_NEWNSID/RTM_GETNSID messages */
enum {
	__LXC_NETNSA_NONE,
#define __LXC_NETNSA_NSID_NOT_ASSIGNED -1
	__LXC_NETNSA_NSID,
	__LXC_NETNSA_PID,
	__LXC_NETNSA_FD,
	__LXC_NETNSA_MAX,
};

/* Length of abstract unix domain socket socket address. */
#define LXC_AUDS_ADDR_LEN sizeof(((struct sockaddr_un *)0)->sun_path)

/* mount */
#ifndef MS_PRIVATE
#define MS_PRIVATE (1<<18)
#endif

#ifndef MS_SLAVE
#define MS_SLAVE (1 << 19)
#endif

#ifndef MS_LAZYTIME
#define MS_LAZYTIME (1<<25)
#endif

#ifndef MS_REC
#define MS_REC 16384
#endif

/* open */
#ifndef O_PATH
#define O_PATH      010000000
#endif

#ifndef O_NOFOLLOW
#define O_NOFOLLOW  00400000
#endif

/* sockets */
#ifndef SOCK_CLOEXEC
#define SOCK_CLOEXEC 02000000
#endif

/* pointer conversion macros */
#define PTR_TO_INT(p) ((int)((intptr_t)(p)))
#define INT_TO_PTR(u) ((void *)((intptr_t)(u)))

#define PTR_TO_INTMAX(p) ((intmax_t)((intptr_t)(p)))
#define INTMAX_TO_PTR(u) ((void *)((intptr_t)(u)))

#define LXC_INVALID_UID ((uid_t)-1)
#define LXC_INVALID_GID ((gid_t)-1)

#define STRLITERALLEN(x) (sizeof(""x"") - 1)
#define STRARRAYLEN(x) (sizeof(x) - 1)

/* Maximum number of bytes sendfile() is able to send in one go. */
#define LXC_SENDFILE_MAX 0x7ffff000

#endif /* __LXC_MACRO_H */
Commit	Line	Data
279c45ee CB	1	/* liblxcapi
	2	*
	3	* Copyright © 2018 Christian Brauner <christian.brauner@ubuntu.com>.
	4	* Copyright © 2018 Canonical Ltd.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2, as
	8	* published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License along
	16	* with this program; if not, write to the Free Software Foundation, Inc.,
	17	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	18	*/
	19
	20	#ifndef __LXC_MACRO_H
	21	#define __LXC_MACRO_H
	22
85de58d6	23	#include <asm/types.h>
b3509169	24	#include <limits.h>
85de58d6 CB	25	#include <linux/if_link.h>
	26	#include <linux/loop.h>
	27	#include <linux/netlink.h>
	28	#include <linux/rtnetlink.h>
938980ba	29	#include <linux/types.h>
245532a2	30	#include <stdint.h>
2259663c	31	#include <string.h>
85de58d6 CB	32	#include <sys/mount.h>
85de58d6 CB	33	#include <sys/socket.h>
b1234129	34	#include <sys/un.h>
2955a58a	35	#include <unistd.h>
85de58d6	36
b3509169 CB	37	#ifndef PATH_MAX
	38	#define PATH_MAX 4096
	39	#endif
	40
279c45ee CB	41	/* Define __S_ISTYPE if missing from the C library. */
	42	#ifndef __S_ISTYPE
	43	#define __S_ISTYPE(mode, mask) (((mode)&S_IFMT) == (mask))
	44	#endif
	45
ba2b6354 CB	46	/* capabilities */
	47	#ifndef CAP_SYS_ADMIN
	48	#define CAP_SYS_ADMIN 21
	49	#endif
	50
279c45ee CB	51	#ifndef CAP_SETFCAP
	52	#define CAP_SETFCAP 31
	53	#endif
	54
	55	#ifndef CAP_MAC_OVERRIDE
	56	#define CAP_MAC_OVERRIDE 32
	57	#endif
	58
	59	#ifndef CAP_MAC_ADMIN
	60	#define CAP_MAC_ADMIN 33
	61	#endif
279c45ee	62
279c45ee CB	63	#ifndef CAP_SETUID
	64	#define CAP_SETUID 7
	65	#endif
	66
	67	#ifndef CAP_SETGID
	68	#define CAP_SETGID 6
	69	#endif
	70
ba2b6354	71	/* prctl */
1f207a5c CB	72	#ifndef PR_CAPBSET_READ
	73	#define PR_CAPBSET_READ 23
	74	#endif
	75
ba2b6354	76	#ifndef PR_CAPBSET_DROP
604ca1c0 CB	77	#define PR_CAPBSET_DROP 24
	78	#endif
	79
1f207a5c CB	80	/* Control the ambient capability set */
	81	#ifndef PR_CAP_AMBIENT
	82	#define PR_CAP_AMBIENT 47
	83	#endif
	84
	85	#ifndef PR_CAP_AMBIENT_IS_SET
	86	#define PR_CAP_AMBIENT_IS_SET 1
	87	#endif
	88
	89	#ifndef PR_CAP_AMBIENT_RAISE
	90	#define PR_CAP_AMBIENT_RAISE 2
	91	#endif
	92
	93	#ifndef PR_CAP_AMBIENT_LOWER
	94	#define PR_CAP_AMBIENT_LOWER 3
	95	#endif
	96
	97	#ifndef PR_CAP_AMBIENT_CLEAR_ALL
	98	#define PR_CAP_AMBIENT_CLEAR_ALL 4
	99	#endif
	100
ba2b6354	101	#ifndef PR_SET_NO_NEW_PRIVS
604ca1c0 CB	102	#define PR_SET_NO_NEW_PRIVS 38
	103	#endif
	104
ba2b6354	105	#ifndef PR_GET_NO_NEW_PRIVS
604ca1c0 CB	106	#define PR_GET_NO_NEW_PRIVS 39
	107	#endif
	108
ba2b6354	109	/* filesystem magic values */
279c45ee CB	110	#ifndef CGROUP_SUPER_MAGIC
	111	#define CGROUP_SUPER_MAGIC 0x27e0eb
	112	#endif
	113
	114	#ifndef CGROUP2_SUPER_MAGIC
	115	#define CGROUP2_SUPER_MAGIC 0x63677270
	116	#endif
	117
f26dc127 CB	118	#ifndef NSFS_MAGIC
	119	#define NSFS_MAGIC 0x6e736673
	120	#endif
	121
ba2b6354	122	/* current overlayfs */
37ef15bb CB	123	#ifndef OVERLAY_SUPER_MAGIC
	124	#define OVERLAY_SUPER_MAGIC 0x794c7630
	125	#endif
	126
ba2b6354 CB	127	/* legacy overlayfs */
	128	#ifndef OVERLAYFS_SUPER_MAGIC
	129	#define OVERLAYFS_SUPER_MAGIC 0x794c764f
	130	#endif
	131
f246d9b8 CB	132	/* Calculate the number of chars needed to represent a given integer as a C
	133	* string. Include room for '-' to indicate negative numbers and the \0 byte.
	134	* This is based on systemd.
	135	*/
	136	#define INTTYPE_TO_STRLEN(type) \
	137	(2 + (sizeof(type) <= 1 \
	138	? 3 \
	139	: sizeof(type) <= 2 \
	140	? 5 \
	141	: sizeof(type) <= 4 \
	142	? 10 \
	143	: sizeof(type) <= 8 \
	144	? 20 \
	145	: sizeof(int[-2 * (sizeof(type) > 8)])))
	146
279c45ee	147	/* Useful macros */
279c45ee CB	148	#define LXC_LINELEN 4096
	149	#define LXC_IDMAPLEN 4096
	150	#define LXC_MAX_BUFFER 4096
0c5ea884	151
279c45ee CB	152	/* /proc/ = 6
279c45ee CB	153	* +
0c5ea884	154	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
279c45ee CB	155	* +
	156	* /fd/ = 4
	157	* +
0c5ea884	158	* <fd-as-str> = INTTYPE_TO_STRLEN(int)
279c45ee CB	159	* +
	160	* \0 = 1
	161	*/
0c9b1f82 CB	162	#define LXC_PROC_PID_FD_LEN \
	163	(6 + INTTYPE_TO_STRLEN(pid_t) + 4 + INTTYPE_TO_STRLEN(int) + 1)
	164
	165	/* /proc/ = 6
	166	* +
	167	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
	168	* +
	169	* /status = 7
	170	* +
	171	* \0 = 1
	172	*/
	173	#define LXC_PROC_STATUS_LEN (6 + INTTYPE_TO_STRLEN(pid_t) + 7 + 1)
	174
	175	/* /proc/ = 6
	176	* +
	177	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
	178	* +
	179	* /attr/ = 6
	180	* +
	181	* /current = 8
	182	* +
	183	* \0 = 1
	184	*/
	185	#define LXC_LSMATTRLEN (6 + INTTYPE_TO_STRLEN(pid_t) + 6 + 8 + 1)
0c5ea884	186
3c736187	187	#define LXC_CMD_DATA_MAX (PATH_MAX * 2)
279c45ee CB	188
	189	/* loop devices */
	190	#ifndef LO_FLAGS_AUTOCLEAR
	191	#define LO_FLAGS_AUTOCLEAR 4
	192	#endif
	193
	194	#ifndef LOOP_CTL_GET_FREE
	195	#define LOOP_CTL_GET_FREE 0x4C82
	196	#endif
	197
	198	/* memfd_create() */
	199	#ifndef MFD_CLOEXEC
	200	#define MFD_CLOEXEC 0x0001U
	201	#endif
	202
	203	#ifndef MFD_ALLOW_SEALING
	204	#define MFD_ALLOW_SEALING 0x0002U
	205	#endif
	206
	207	/**
	208	* BUILD_BUG_ON - break compile if a condition is true.
	209	* @condition: the condition which the compiler should know is false.
	210	*
	211	* If you have some code which relies on certain constants being equal, or
	212	* other compile-time-evaluated condition, you should use BUILD_BUG_ON to
	213	* detect if someone changes it.
	214	*
	215	* The implementation uses gcc's reluctance to create a negative array, but
	216	* gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments
	217	* to inline functions). So as a fallback we use the optimizer; if it can't
	218	* prove the condition is false, it will cause a link error on the undefined
	219	* "__build_bug_on_failed". This error message can be harder to track down
	220	* though, hence the two different methods.
	221	*/
	222	#ifndef __OPTIMIZE__
ba2b6354	223	#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2 * !!(condition)]))
279c45ee CB	224	#else
279c45ee CB	225	extern int __build_bug_on_failed;
ba2b6354 CB	226	#define BUILD_BUG_ON(condition) \
	227	do { \
	228	((void)sizeof(char[1 - 2 * !!(condition)])); \
	229	if (condition) \
	230	__build_bug_on_failed = 1; \
	231	} while (0)
279c45ee CB	232	#endif
	233
	234	#define lxc_iterate_parts(__iterator, __splitme, __separators) \
	235	for (char __p = NULL, __it = strtok_r(__splitme, __separators, &__p); \
	236	(__iterator = __it); \
	237	__iterator = __it = strtok_r(NULL, __separators, &__p))
	238
b81689a1 CB	239	#define prctl_arg(x) ((unsigned long)x)
b81689a1 CB	240
4fb34c04	241	/* networking */
8df6fa99 CB	242	#ifndef NETLINK_DUMP_STRICT_CHK
	243	#define NETLINK_DUMP_STRICT_CHK 12
	244	#endif
	245
d38f5b17 CB	246	#ifndef SOL_NETLINK
	247	#define SOL_NETLINK 270
	248	#endif
	249
4fb34c04 CB	250	#ifndef IFLA_LINKMODE
	251	#define IFLA_LINKMODE 17
	252	#endif
	253
	254	#ifndef IFLA_LINKINFO
	255	#define IFLA_LINKINFO 18
	256	#endif
	257
	258	#ifndef IFLA_NET_NS_PID
	259	#define IFLA_NET_NS_PID 19
	260	#endif
	261
	262	#ifndef IFLA_INFO_KIND
	263	#define IFLA_INFO_KIND 1
	264	#endif
	265
	266	#ifndef IFLA_VLAN_ID
	267	#define IFLA_VLAN_ID 1
	268	#endif
	269
	270	#ifndef IFLA_INFO_DATA
	271	#define IFLA_INFO_DATA 2
	272	#endif
	273
	274	#ifndef VETH_INFO_PEER
	275	#define VETH_INFO_PEER 1
	276	#endif
	277
	278	#ifndef IFLA_MACVLAN_MODE
	279	#define IFLA_MACVLAN_MODE 1
	280	#endif
	281
	282	#ifndef IFLA_NEW_NETNSID
	283	#define IFLA_NEW_NETNSID 45
	284	#endif
	285
cc6119a0 CB	286	#ifdef IFLA_IF_NETNSID
	287	#ifndef IFLA_TARGET_NETNSID
	288	#define IFLA_TARGET_NETNSID = IFLA_IF_NETNSID
	289	#endif
	290	#else
4fb34c04	291	#define IFLA_IF_NETNSID 46
cc6119a0 CB	292	#define IFLA_TARGET_NETNSID 46
	293	#endif
	294
	295	#ifndef IFA_TARGET_NETNSID
	296	#define IFA_TARGET_NETNSID 10
4fb34c04 CB	297	#endif
4fb34c04 CB	298
da5efb6f CB	299	#ifndef IFLA_STATS
	300	#define IFLA_STATS 7
	301	#endif
	302
	303	#ifndef IFLA_STATS64
	304	#define IFLA_STATS64 23
	305	#endif
cc6119a0	306
873c6e87 CB	307	#ifndef RTM_NEWNSID
	308	#define RTM_NEWNSID 88
	309	#endif
	310
938980ba CB	311	#ifndef RTM_GETNSID
	312	#define RTM_GETNSID 90
	313	#endif
	314
4e3ed0d1 CB	315	#ifndef NLMSG_ERROR
	316	#define NLMSG_ERROR 0x2
	317	#endif
	318
7b15813c CB	319	#ifndef MACVLAN_MODE_PRIVATE
	320	#define MACVLAN_MODE_PRIVATE 1
	321	#endif
	322
	323	#ifndef MACVLAN_MODE_VEPA
	324	#define MACVLAN_MODE_VEPA 2
	325	#endif
	326
	327	#ifndef MACVLAN_MODE_BRIDGE
	328	#define MACVLAN_MODE_BRIDGE 4
	329	#endif
	330
	331	#ifndef MACVLAN_MODE_PASSTHRU
	332	#define MACVLAN_MODE_PASSTHRU 8
	333	#endif
	334
cc6119a0 CB	335	/* Attributes of RTM_NEWNSID/RTM_GETNSID messages */
	336	enum {
	337	__LXC_NETNSA_NONE,
	338	#define __LXC_NETNSA_NSID_NOT_ASSIGNED -1
	339	__LXC_NETNSA_NSID,
	340	__LXC_NETNSA_PID,
	341	__LXC_NETNSA_FD,
	342	__LXC_NETNSA_MAX,
	343	};
	344
b1234129 CB	345	/* Length of abstract unix domain socket socket address. */
	346	#define LXC_AUDS_ADDR_LEN sizeof(((struct sockaddr_un *)0)->sun_path)
	347
c881c810	348	/* mount */
6e5655e0 CB	349	#ifndef MS_PRIVATE
6e5655e0 CB	350	#define MS_PRIVATE (1<<18)
c881c810 CB	351	#endif
	352
	353	#ifndef MS_SLAVE
	354	#define MS_SLAVE (1 << 19)
	355	#endif
	356
6e5655e0 CB	357	#ifndef MS_LAZYTIME
	358	#define MS_LAZYTIME (1<<25)
	359	#endif
	360
	361	#ifndef MS_REC
	362	#define MS_REC 16384
	363	#endif
	364
37ef15bb CB	365	/* open */
	366	#ifndef O_PATH
	367	#define O_PATH 010000000
	368	#endif
	369
	370	#ifndef O_NOFOLLOW
	371	#define O_NOFOLLOW 00400000
	372	#endif
	373
604ca1c0 CB	374	/* sockets */
	375	#ifndef SOCK_CLOEXEC
	376	#define SOCK_CLOEXEC 02000000
	377	#endif
	378
245532a2 CB	379	/* pointer conversion macros */
	380	#define PTR_TO_INT(p) ((int)((intptr_t)(p)))
	381	#define INT_TO_PTR(u) ((void *)((intptr_t)(u)))
	382
9234406b CB	383	#define PTR_TO_INTMAX(p) ((intmax_t)((intptr_t)(p)))
	384	#define INTMAX_TO_PTR(u) ((void *)((intptr_t)(u)))
	385
b962868f CB	386	#define LXC_INVALID_UID ((uid_t)-1)
	387	#define LXC_INVALID_GID ((gid_t)-1)
	388
36dee4a2 CB	389	#define STRLITERALLEN(x) (sizeof(""x"") - 1)
	390	#define STRARRAYLEN(x) (sizeof(x) - 1)
	391
7c4d9466 CB	392	/* Maximum number of bytes sendfile() is able to send in one go. */
	393	#define LXC_SENDFILE_MAX 0x7ffff000
	394
279c45ee	395	#endif /* __LXC_MACRO_H */