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

/* SPDX-License-Identifier: LGPL-2.1+ */

#ifndef __LXC_MACRO_H
#define __LXC_MACRO_H

#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#define __STDC_FORMAT_MACROS
#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

#ifndef MAX_GRBUF_SIZE
#define MAX_GRBUF_SIZE 2097152
#endif

#define INT64_FMT "%" PRId64

/* 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_SETGID
#define CAP_SETGID 6
#endif

#ifndef CAP_SETUID
#define CAP_SETUID 7
#endif

#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

/* 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
#define LXC_NAMESPACE_NAME_MAX 256

/* /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_GET_STRICT_CHK
#define NETLINK_GET_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_NET_NS_FD
#define IFLA_NET_NS_FD 28
#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 VETH_MODE_BRIDGE
#define VETH_MODE_BRIDGE 1
#endif

#ifndef VETH_MODE_ROUTER
#define VETH_MODE_ROUTER 2
#endif

#ifndef IFLA_MACVLAN_MODE
#define IFLA_MACVLAN_MODE 1
#endif

#ifndef IFLA_IPVLAN_MODE
#define IFLA_IPVLAN_MODE 1
#endif

#ifndef IFLA_IPVLAN_ISOLATION
#define IFLA_IPVLAN_ISOLATION 2
#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

#ifndef IPVLAN_MODE_L2
#define IPVLAN_MODE_L2 0
#endif

#ifndef IPVLAN_MODE_L3
#define IPVLAN_MODE_L3 1
#endif

#ifndef IPVLAN_MODE_L3S
#define IPVLAN_MODE_L3S 2
#endif

#ifndef IPVLAN_ISOLATION_BRIDGE
#define IPVLAN_ISOLATION_BRIDGE 0
#endif

#ifndef IPVLAN_ISOLATION_PRIVATE
#define IPVLAN_ISOLATION_PRIVATE 1
#endif

#ifndef IPVLAN_ISOLATION_VEPA
#define IPVLAN_ISOLATION_VEPA 2
#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_PID(p) ((pid_t)((intptr_t)(p)))
#define PID_TO_PTR(u) ((void *)((intptr_t)(u)))

#define PTR_TO_UINT64(p) ((uint64_t)((intptr_t)(p)))

#define UINT_TO_PTR(u) ((void *) ((uintptr_t) (u)))
#define PTR_TO_USHORT(p) ((unsigned short)((uintptr_t)(p)))

#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

#define move_ptr(ptr)                                 \
	({                                            \
		typeof(ptr) __internal_ptr__ = (ptr); \
		(ptr) = NULL;                         \
		__internal_ptr__;                     \
	})

#define move_fd(fd)                         \
	({                                  \
		int __internal_fd__ = (fd); \
		(fd) = -EBADF;              \
		__internal_fd__;            \
	})

#define ret_set_errno(__ret__, __errno__)                     \
	({                                                    \
		typeof(__ret__) __internal_ret__ = (__ret__); \
		errno = (__errno__);                          \
		__internal_ret__;                             \
	})

#define ret_errno(__errno__)         \
	({                           \
		errno = (__errno__); \
		-(__errno__);        \
	})

#define free_move_ptr(a, b)          \
	({                           \
		free(a);             \
		(a) = move_ptr((b)); \
	})

/* Container's specific file/directory names */
#define LXC_CONFIG_FNAME      "config"
#define LXC_PARTIAL_FNAME     "partial"
#define LXC_ROOTFS_DNAME      "rootfs"
#define LXC_TIMESTAMP_FNAME   "ts"
#define LXC_COMMENT_FNAME     "comment"

#define ARRAY_SIZE(x)                                                        \
	(__builtin_choose_expr(!__builtin_types_compatible_p(typeof(x),      \
							     typeof(&*(x))), \
			       sizeof(x) / sizeof((x)[0]), ((void)0)))

#ifndef TIOCGPTPEER
	#if defined __sparc__
		#define TIOCGPTPEER _IO('t', 137)
	#else
		#define TIOCGPTPEER _IO('T', 0x41)
	#endif
#endif

#endif /* __LXC_MACRO_H */
Commit	Line	Data
cc73685d	1	/* SPDX-License-Identifier: LGPL-2.1+ */
279c45ee CB	2
	3	#ifndef __LXC_MACRO_H
	4	#define __LXC_MACRO_H
	5
900b6606 CB	6	#ifndef _GNU_SOURCE
	7	#define _GNU_SOURCE 1
	8	#endif
	9	#define __STDC_FORMAT_MACROS
85de58d6	10	#include <asm/types.h>
b3509169	11	#include <limits.h>
85de58d6 CB	12	#include <linux/if_link.h>
	13	#include <linux/loop.h>
	14	#include <linux/netlink.h>
	15	#include <linux/rtnetlink.h>
938980ba	16	#include <linux/types.h>
245532a2	17	#include <stdint.h>
2259663c	18	#include <string.h>
85de58d6 CB	19	#include <sys/mount.h>
85de58d6 CB	20	#include <sys/socket.h>
b1234129	21	#include <sys/un.h>
2955a58a	22	#include <unistd.h>
85de58d6	23
b3509169 CB	24	#ifndef PATH_MAX
	25	#define PATH_MAX 4096
	26	#endif
	27
41b43296	28	#ifndef MAX_GRBUF_SIZE
af12eb5d	29	#define MAX_GRBUF_SIZE 2097152
41b43296 CB	30	#endif
41b43296 CB	31
900b6606 CB	32	#define INT64_FMT "%" PRId64
900b6606 CB	33
279c45ee CB	34	/* Define __S_ISTYPE if missing from the C library. */
	35	#ifndef __S_ISTYPE
	36	#define __S_ISTYPE(mode, mask) (((mode)&S_IFMT) == (mask))
	37	#endif
	38
ba2b6354	39	/* capabilities */
0d6d83fd CB	40	#ifndef CAP_SETGID
	41	#define CAP_SETGID 6
	42	#endif
	43
	44	#ifndef CAP_SETUID
	45	#define CAP_SETUID 7
	46	#endif
	47
ba2b6354 CB	48	#ifndef CAP_SYS_ADMIN
	49	#define CAP_SYS_ADMIN 21
	50	#endif
	51
279c45ee CB	52	#ifndef CAP_SETFCAP
	53	#define CAP_SETFCAP 31
	54	#endif
	55
	56	#ifndef CAP_MAC_OVERRIDE
	57	#define CAP_MAC_OVERRIDE 32
	58	#endif
	59
	60	#ifndef CAP_MAC_ADMIN
	61	#define CAP_MAC_ADMIN 33
	62	#endif
279c45ee	63
ba2b6354	64	/* prctl */
1f207a5c CB	65	#ifndef PR_CAPBSET_READ
	66	#define PR_CAPBSET_READ 23
	67	#endif
	68
ba2b6354	69	#ifndef PR_CAPBSET_DROP
604ca1c0 CB	70	#define PR_CAPBSET_DROP 24
	71	#endif
	72
1f207a5c CB	73	/* Control the ambient capability set */
	74	#ifndef PR_CAP_AMBIENT
	75	#define PR_CAP_AMBIENT 47
	76	#endif
	77
	78	#ifndef PR_CAP_AMBIENT_IS_SET
	79	#define PR_CAP_AMBIENT_IS_SET 1
	80	#endif
	81
	82	#ifndef PR_CAP_AMBIENT_RAISE
	83	#define PR_CAP_AMBIENT_RAISE 2
	84	#endif
	85
	86	#ifndef PR_CAP_AMBIENT_LOWER
	87	#define PR_CAP_AMBIENT_LOWER 3
	88	#endif
	89
	90	#ifndef PR_CAP_AMBIENT_CLEAR_ALL
	91	#define PR_CAP_AMBIENT_CLEAR_ALL 4
	92	#endif
	93
ba2b6354	94	#ifndef PR_SET_NO_NEW_PRIVS
604ca1c0 CB	95	#define PR_SET_NO_NEW_PRIVS 38
	96	#endif
	97
ba2b6354	98	#ifndef PR_GET_NO_NEW_PRIVS
604ca1c0 CB	99	#define PR_GET_NO_NEW_PRIVS 39
	100	#endif
	101
ba2b6354	102	/* filesystem magic values */
279c45ee CB	103	#ifndef CGROUP_SUPER_MAGIC
	104	#define CGROUP_SUPER_MAGIC 0x27e0eb
	105	#endif
	106
	107	#ifndef CGROUP2_SUPER_MAGIC
	108	#define CGROUP2_SUPER_MAGIC 0x63677270
	109	#endif
	110
f26dc127 CB	111	#ifndef NSFS_MAGIC
	112	#define NSFS_MAGIC 0x6e736673
	113	#endif
	114
ba2b6354	115	/* current overlayfs */
37ef15bb CB	116	#ifndef OVERLAY_SUPER_MAGIC
	117	#define OVERLAY_SUPER_MAGIC 0x794c7630
	118	#endif
	119
ba2b6354 CB	120	/* legacy overlayfs */
	121	#ifndef OVERLAYFS_SUPER_MAGIC
	122	#define OVERLAYFS_SUPER_MAGIC 0x794c764f
	123	#endif
	124
f246d9b8 CB	125	/* Calculate the number of chars needed to represent a given integer as a C
	126	* string. Include room for '-' to indicate negative numbers and the \0 byte.
	127	* This is based on systemd.
	128	*/
	129	#define INTTYPE_TO_STRLEN(type) \
	130	(2 + (sizeof(type) <= 1 \
	131	? 3 \
	132	: sizeof(type) <= 2 \
	133	? 5 \
	134	: sizeof(type) <= 4 \
	135	? 10 \
	136	: sizeof(type) <= 8 \
	137	? 20 \
	138	: sizeof(int[-2 * (sizeof(type) > 8)])))
	139
279c45ee	140	/* Useful macros */
279c45ee CB	141	#define LXC_LINELEN 4096
	142	#define LXC_IDMAPLEN 4096
	143	#define LXC_MAX_BUFFER 4096
b280bc38	144	#define LXC_NAMESPACE_NAME_MAX 256
0c5ea884	145
279c45ee CB	146	/* /proc/ = 6
279c45ee CB	147	* +
0c5ea884	148	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
279c45ee CB	149	* +
	150	* /fd/ = 4
	151	* +
0c5ea884	152	* <fd-as-str> = INTTYPE_TO_STRLEN(int)
279c45ee CB	153	* +
	154	* \0 = 1
	155	*/
0c9b1f82 CB	156	#define LXC_PROC_PID_FD_LEN \
	157	(6 + INTTYPE_TO_STRLEN(pid_t) + 4 + INTTYPE_TO_STRLEN(int) + 1)
	158
	159	/* /proc/ = 6
	160	* +
	161	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
	162	* +
	163	* /status = 7
	164	* +
	165	* \0 = 1
	166	*/
	167	#define LXC_PROC_STATUS_LEN (6 + INTTYPE_TO_STRLEN(pid_t) + 7 + 1)
	168
	169	/* /proc/ = 6
	170	* +
	171	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
	172	* +
	173	* /attr/ = 6
	174	* +
	175	* /current = 8
	176	* +
	177	* \0 = 1
	178	*/
	179	#define LXC_LSMATTRLEN (6 + INTTYPE_TO_STRLEN(pid_t) + 6 + 8 + 1)
0c5ea884	180
3c736187	181	#define LXC_CMD_DATA_MAX (PATH_MAX * 2)
279c45ee CB	182
	183	/* loop devices */
	184	#ifndef LO_FLAGS_AUTOCLEAR
	185	#define LO_FLAGS_AUTOCLEAR 4
	186	#endif
	187
	188	#ifndef LOOP_CTL_GET_FREE
	189	#define LOOP_CTL_GET_FREE 0x4C82
	190	#endif
	191
	192	/* memfd_create() */
	193	#ifndef MFD_CLOEXEC
	194	#define MFD_CLOEXEC 0x0001U
	195	#endif
	196
	197	#ifndef MFD_ALLOW_SEALING
	198	#define MFD_ALLOW_SEALING 0x0002U
	199	#endif
	200
	201	/**
	202	* BUILD_BUG_ON - break compile if a condition is true.
	203	* @condition: the condition which the compiler should know is false.
	204	*
	205	* If you have some code which relies on certain constants being equal, or
	206	* other compile-time-evaluated condition, you should use BUILD_BUG_ON to
	207	* detect if someone changes it.
	208	*
	209	* The implementation uses gcc's reluctance to create a negative array, but
	210	* gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments
	211	* to inline functions). So as a fallback we use the optimizer; if it can't
	212	* prove the condition is false, it will cause a link error on the undefined
	213	* "__build_bug_on_failed". This error message can be harder to track down
	214	* though, hence the two different methods.
	215	*/
	216	#ifndef __OPTIMIZE__
ba2b6354	217	#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2 * !!(condition)]))
279c45ee CB	218	#else
279c45ee CB	219	extern int __build_bug_on_failed;
ba2b6354 CB	220	#define BUILD_BUG_ON(condition) \
	221	do { \
	222	((void)sizeof(char[1 - 2 * !!(condition)])); \
	223	if (condition) \
	224	__build_bug_on_failed = 1; \
	225	} while (0)
279c45ee CB	226	#endif
	227
	228	#define lxc_iterate_parts(__iterator, __splitme, __separators) \
	229	for (char __p = NULL, __it = strtok_r(__splitme, __separators, &__p); \
	230	(__iterator = __it); \
	231	__iterator = __it = strtok_r(NULL, __separators, &__p))
	232
b81689a1 CB	233	#define prctl_arg(x) ((unsigned long)x)
b81689a1 CB	234
4fb34c04	235	/* networking */
c8ca5a43 CB	236	#ifndef NETLINK_GET_STRICT_CHK
c8ca5a43 CB	237	#define NETLINK_GET_STRICT_CHK 12
8df6fa99 CB	238	#endif
8df6fa99 CB	239
d38f5b17 CB	240	#ifndef SOL_NETLINK
	241	#define SOL_NETLINK 270
	242	#endif
	243
4fb34c04 CB	244	#ifndef IFLA_LINKMODE
	245	#define IFLA_LINKMODE 17
	246	#endif
	247
	248	#ifndef IFLA_LINKINFO
	249	#define IFLA_LINKINFO 18
	250	#endif
	251
	252	#ifndef IFLA_NET_NS_PID
	253	#define IFLA_NET_NS_PID 19
	254	#endif
	255
0037ab49 TP	256	#ifndef IFLA_NET_NS_FD
	257	#define IFLA_NET_NS_FD 28
	258	#endif
	259
4fb34c04 CB	260	#ifndef IFLA_INFO_KIND
	261	#define IFLA_INFO_KIND 1
	262	#endif
	263
	264	#ifndef IFLA_VLAN_ID
	265	#define IFLA_VLAN_ID 1
	266	#endif
	267
	268	#ifndef IFLA_INFO_DATA
	269	#define IFLA_INFO_DATA 2
	270	#endif
	271
	272	#ifndef VETH_INFO_PEER
	273	#define VETH_INFO_PEER 1
	274	#endif
	275
3f0ed090 TP	276	#ifndef VETH_MODE_BRIDGE
	277	#define VETH_MODE_BRIDGE 1
	278	#endif
	279
	280	#ifndef VETH_MODE_ROUTER
	281	#define VETH_MODE_ROUTER 2
	282	#endif
	283
4fb34c04 CB	284	#ifndef IFLA_MACVLAN_MODE
	285	#define IFLA_MACVLAN_MODE 1
	286	#endif
	287
c9f52382	288	#ifndef IFLA_IPVLAN_MODE
	289	#define IFLA_IPVLAN_MODE 1
	290	#endif
	291
	292	#ifndef IFLA_IPVLAN_ISOLATION
	293	#define IFLA_IPVLAN_ISOLATION 2
	294	#endif
	295
4fb34c04 CB	296	#ifndef IFLA_NEW_NETNSID
	297	#define IFLA_NEW_NETNSID 45
	298	#endif
	299
cc6119a0 CB	300	#ifdef IFLA_IF_NETNSID
	301	#ifndef IFLA_TARGET_NETNSID
	302	#define IFLA_TARGET_NETNSID = IFLA_IF_NETNSID
	303	#endif
	304	#else
4fb34c04	305	#define IFLA_IF_NETNSID 46
cc6119a0 CB	306	#define IFLA_TARGET_NETNSID 46
	307	#endif
	308
	309	#ifndef IFA_TARGET_NETNSID
	310	#define IFA_TARGET_NETNSID 10
4fb34c04 CB	311	#endif
4fb34c04 CB	312
da5efb6f CB	313	#ifndef IFLA_STATS
	314	#define IFLA_STATS 7
	315	#endif
	316
	317	#ifndef IFLA_STATS64
	318	#define IFLA_STATS64 23
	319	#endif
cc6119a0	320
873c6e87 CB	321	#ifndef RTM_NEWNSID
	322	#define RTM_NEWNSID 88
	323	#endif
	324
938980ba CB	325	#ifndef RTM_GETNSID
	326	#define RTM_GETNSID 90
	327	#endif
	328
4e3ed0d1 CB	329	#ifndef NLMSG_ERROR
	330	#define NLMSG_ERROR 0x2
	331	#endif
	332
7b15813c CB	333	#ifndef MACVLAN_MODE_PRIVATE
	334	#define MACVLAN_MODE_PRIVATE 1
	335	#endif
	336
	337	#ifndef MACVLAN_MODE_VEPA
	338	#define MACVLAN_MODE_VEPA 2
	339	#endif
	340
	341	#ifndef MACVLAN_MODE_BRIDGE
	342	#define MACVLAN_MODE_BRIDGE 4
	343	#endif
	344
	345	#ifndef MACVLAN_MODE_PASSTHRU
	346	#define MACVLAN_MODE_PASSTHRU 8
	347	#endif
	348
c9f52382	349	#ifndef IPVLAN_MODE_L2
	350	#define IPVLAN_MODE_L2 0
	351	#endif
	352
	353	#ifndef IPVLAN_MODE_L3
	354	#define IPVLAN_MODE_L3 1
	355	#endif
	356
	357	#ifndef IPVLAN_MODE_L3S
	358	#define IPVLAN_MODE_L3S 2
	359	#endif
	360
	361	#ifndef IPVLAN_ISOLATION_BRIDGE
	362	#define IPVLAN_ISOLATION_BRIDGE 0
	363	#endif
	364
	365	#ifndef IPVLAN_ISOLATION_PRIVATE
	366	#define IPVLAN_ISOLATION_PRIVATE 1
	367	#endif
	368
	369	#ifndef IPVLAN_ISOLATION_VEPA
	370	#define IPVLAN_ISOLATION_VEPA 2
	371	#endif
	372
cc6119a0 CB	373	/* Attributes of RTM_NEWNSID/RTM_GETNSID messages */
	374	enum {
	375	__LXC_NETNSA_NONE,
	376	#define __LXC_NETNSA_NSID_NOT_ASSIGNED -1
	377	__LXC_NETNSA_NSID,
	378	__LXC_NETNSA_PID,
	379	__LXC_NETNSA_FD,
	380	__LXC_NETNSA_MAX,
	381	};
	382
b1234129 CB	383	/* Length of abstract unix domain socket socket address. */
	384	#define LXC_AUDS_ADDR_LEN sizeof(((struct sockaddr_un *)0)->sun_path)
	385
c881c810	386	/* mount */
6e5655e0 CB	387	#ifndef MS_PRIVATE
6e5655e0 CB	388	#define MS_PRIVATE (1<<18)
c881c810 CB	389	#endif
	390
	391	#ifndef MS_SLAVE
	392	#define MS_SLAVE (1 << 19)
	393	#endif
	394
6e5655e0 CB	395	#ifndef MS_LAZYTIME
	396	#define MS_LAZYTIME (1<<25)
	397	#endif
	398
	399	#ifndef MS_REC
	400	#define MS_REC 16384
	401	#endif
	402
37ef15bb CB	403	/* open */
	404	#ifndef O_PATH
	405	#define O_PATH 010000000
	406	#endif
	407
	408	#ifndef O_NOFOLLOW
	409	#define O_NOFOLLOW 00400000
	410	#endif
	411
604ca1c0 CB	412	/* sockets */
	413	#ifndef SOCK_CLOEXEC
	414	#define SOCK_CLOEXEC 02000000
	415	#endif
	416
245532a2 CB	417	/* pointer conversion macros */
	418	#define PTR_TO_INT(p) ((int)((intptr_t)(p)))
	419	#define INT_TO_PTR(u) ((void *)((intptr_t)(u)))
	420
565eb353 CB	421	#define PTR_TO_PID(p) ((pid_t)((intptr_t)(p)))
565eb353 CB	422	#define PID_TO_PTR(u) ((void *)((intptr_t)(u)))
9234406b	423
bf651989 CB	424	#define PTR_TO_UINT64(p) ((uint64_t)((intptr_t)(p)))
bf651989 CB	425
b4c9fc14 TP	426	#define UINT_TO_PTR(u) ((void *) ((uintptr_t) (u)))
	427	#define PTR_TO_USHORT(p) ((unsigned short)((uintptr_t)(p)))
	428
b962868f CB	429	#define LXC_INVALID_UID ((uid_t)-1)
	430	#define LXC_INVALID_GID ((gid_t)-1)
	431
36dee4a2 CB	432	#define STRLITERALLEN(x) (sizeof(""x"") - 1)
	433	#define STRARRAYLEN(x) (sizeof(x) - 1)
	434
7c4d9466 CB	435	/* Maximum number of bytes sendfile() is able to send in one go. */
	436	#define LXC_SENDFILE_MAX 0x7ffff000
	437
e4edf5d7 CB	438	#define move_ptr(ptr) \
	439	({ \
	440	typeof(ptr) __internal_ptr__ = (ptr); \
	441	(ptr) = NULL; \
	442	__internal_ptr__; \
c74da4ab CB	443	})
c74da4ab CB	444
240fecd0 CB	445	#define move_fd(fd) \
	446	({ \
	447	int __internal_fd__ = (fd); \
	448	(fd) = -EBADF; \
	449	__internal_fd__; \
4101805b CB	450	})
4101805b CB	451
d7d1e27a CB	452	#define ret_set_errno(__ret__, __errno__) \
	453	({ \
	454	typeof(__ret__) __internal_ret__ = (__ret__); \
	455	errno = (__errno__); \
	456	__internal_ret__; \
c581d2a6 CB	457	})
c581d2a6 CB	458
d7d1e27a CB	459	#define ret_errno(__errno__) \
	460	({ \
	461	errno = (__errno__); \
	462	-(__errno__); \
9958e6fe CB	463	})
9958e6fe CB	464
d7d1e27a CB	465	#define free_move_ptr(a, b) \
	466	({ \
	467	free(a); \
	468	(a) = move_ptr((b)); \
46383a85 CB	469	})
46383a85 CB	470
eff0e7bb RK	471	/* Container's specific file/directory names */
	472	#define LXC_CONFIG_FNAME "config"
	473	#define LXC_PARTIAL_FNAME "partial"
	474	#define LXC_ROOTFS_DNAME "rootfs"
	475	#define LXC_TIMESTAMP_FNAME "ts"
	476	#define LXC_COMMENT_FNAME "comment"
	477
bf651989 CB	478	#define ARRAY_SIZE(x) \
	479	(__builtin_choose_expr(!__builtin_types_compatible_p(typeof(x), \
	480	typeof(&*(x))), \
	481	sizeof(x) / sizeof((x)[0]), ((void)0)))
	482
3615d54a CB	483	#ifndef TIOCGPTPEER
	484	#if defined __sparc__
	485	#define TIOCGPTPEER _IO('t', 137)
	486	#else
	487	#define TIOCGPTPEER _IO('T', 0x41)
	488	#endif
	489	#endif
	490
279c45ee	491	#endif /* __LXC_MACRO_H */