[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_CHOWN
#define CAP_CHOWN            	0
#endif

#ifndef CAP_DAC_OVERRIDE
#define CAP_DAC_OVERRIDE     	1
#endif

#ifndef CAP_DAC_READ_SEARCH
#define CAP_DAC_READ_SEARCH  	2
#endif

#ifndef CAP_FOWNER
#define CAP_FOWNER           	3
#endif

#ifndef CAP_FSETID
#define CAP_FSETID           	4
#endif

#ifndef CAP_KILL
#define CAP_KILL             	5
#endif

#ifndef CAP_SETGID
#define CAP_SETGID           	6
#endif

#ifndef CAP_SETUID
#define CAP_SETUID           	7
#endif

#ifndef CAP_SETPCAP
#define CAP_SETPCAP          	8
#endif

#ifndef CAP_LINUX_IMMUTABLE
#define CAP_LINUX_IMMUTABLE  	9
#endif

#ifndef CAP_NET_BIND_SERVICE
#define CAP_NET_BIND_SERVICE 	10
#endif

#ifndef CAP_NET_BROADCAST
#define CAP_NET_BROADCAST    	11
#endif

#ifndef CAP_NET_ADMIN
#define CAP_NET_ADMIN        	12
#endif

#ifndef CAP_NET_RAW
#define CAP_NET_RAW          	13
#endif

#ifndef CAP_IPC_LOCK
#define CAP_IPC_LOCK         	14
#endif

#ifndef CAP_IPC_OWNER
#define CAP_IPC_OWNER        	15
#endif

#ifndef CAP_SYS_MODULE
#define CAP_SYS_MODULE       	16
#endif

#ifndef CAP_SYS_RAWIO
#define CAP_SYS_RAWIO        	17
#endif

#ifndef CAP_SYS_CHROOT
#define CAP_SYS_CHROOT       	18
#endif

#ifndef CAP_SYS_PTRACE
#define CAP_SYS_PTRACE       	19
#endif

#ifndef CAP_SYS_PACCT
#define CAP_SYS_PACCT        	20
#endif

#ifndef CAP_SYS_ADMIN
#define CAP_SYS_ADMIN        	21
#endif

#ifndef CAP_SYS_BOOT
#define CAP_SYS_BOOT         	22
#endif

#ifndef CAP_SYS_NICE
#define CAP_SYS_NICE         	23
#endif

#ifndef CAP_SYS_RESOURCE
#define CAP_SYS_RESOURCE     	24
#endif

#ifndef CAP_SYS_TIME
#define CAP_SYS_TIME         	25
#endif

#ifndef CAP_SYS_TTY_CONFIG
#define CAP_SYS_TTY_CONFIG   	26
#endif

#ifndef CAP_MKNOD
#define CAP_MKNOD            	27
#endif

#ifndef CAP_LEASE
#define CAP_LEASE            	28
#endif

#ifndef CAP_AUDIT_WRITE
#define CAP_AUDIT_WRITE      	29
#endif

#ifndef CAP_AUDIT_CONTROL
#define CAP_AUDIT_CONTROL    	30
#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_SYSLOG
#define CAP_SYSLOG           	34
#endif

#ifndef CAP_WAKE_ALARM
#define CAP_WAKE_ALARM       	35
#endif

#ifndef CAP_BLOCK_SUSPEND
#define CAP_BLOCK_SUSPEND    	36
#endif

#ifndef CAP_AUDIT_READ
#define CAP_AUDIT_READ		37
#endif

#ifndef CAP_PERFMON
#define CAP_PERFMON		38
#endif

#ifndef CAP_BPF
#define CAP_BPF			39
#endif

#ifndef CAP_CHECKPOINT_RESTORE
#define CAP_CHECKPOINT_RESTORE	40
#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_LEN \
	(6 + INTTYPE_TO_STRLEN(pid_t) + 1)

/* /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

#ifndef BRIDGE_VLAN_NONE
#define BRIDGE_VLAN_NONE -1 /* Bridge VLAN option set to "none". */
#endif

#ifndef BRIDGE_VLAN_ID_MAX
#define BRIDGE_VLAN_ID_MAX 4094 /* Bridge VLAN MAX VLAN ID. */
#endif

#ifndef BRIDGE_FLAGS_MASTER
#define BRIDGE_FLAGS_MASTER 1 /* Bridge command to/from parent */
#endif

#ifndef BRIDGE_VLAN_INFO_PVID
#define BRIDGE_VLAN_INFO_PVID (1<<1) /* VLAN is PVID, ingress untagged */
#endif

#ifndef BRIDGE_VLAN_INFO_UNTAGGED
#define BRIDGE_VLAN_INFO_UNTAGGED (1<<2) /* VLAN egresses untagged */
#endif

#ifndef IFLA_BRIDGE_FLAGS
#define IFLA_BRIDGE_FLAGS 0
#endif

#ifndef IFLA_BRIDGE_VLAN_INFO
#define IFLA_BRIDGE_VLAN_INFO 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)((uintptr_t)(p)))
#define PTR_TO_U64(p) ((__u64)((uintptr_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
052535c8	28	#ifndef MAX_GRBUF_SIZE
abd833eb	29	#define MAX_GRBUF_SIZE 2097152
052535c8 CB	30	#endif
052535c8 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 */
fa934e3e CB	40	#ifndef CAP_CHOWN
	41	#define CAP_CHOWN 0
	42	#endif
	43
	44	#ifndef CAP_DAC_OVERRIDE
	45	#define CAP_DAC_OVERRIDE 1
	46	#endif
	47
	48	#ifndef CAP_DAC_READ_SEARCH
	49	#define CAP_DAC_READ_SEARCH 2
	50	#endif
	51
	52	#ifndef CAP_FOWNER
	53	#define CAP_FOWNER 3
	54	#endif
	55
	56	#ifndef CAP_FSETID
	57	#define CAP_FSETID 4
	58	#endif
	59
	60	#ifndef CAP_KILL
	61	#define CAP_KILL 5
	62	#endif
	63
24b77f47	64	#ifndef CAP_SETGID
fa934e3e	65	#define CAP_SETGID 6
24b77f47 CB	66	#endif
	67
	68	#ifndef CAP_SETUID
fa934e3e CB	69	#define CAP_SETUID 7
	70	#endif
	71
	72	#ifndef CAP_SETPCAP
	73	#define CAP_SETPCAP 8
	74	#endif
	75
	76	#ifndef CAP_LINUX_IMMUTABLE
	77	#define CAP_LINUX_IMMUTABLE 9
	78	#endif
	79
	80	#ifndef CAP_NET_BIND_SERVICE
	81	#define CAP_NET_BIND_SERVICE 10
	82	#endif
	83
	84	#ifndef CAP_NET_BROADCAST
	85	#define CAP_NET_BROADCAST 11
	86	#endif
	87
	88	#ifndef CAP_NET_ADMIN
	89	#define CAP_NET_ADMIN 12
	90	#endif
	91
	92	#ifndef CAP_NET_RAW
	93	#define CAP_NET_RAW 13
	94	#endif
	95
	96	#ifndef CAP_IPC_LOCK
	97	#define CAP_IPC_LOCK 14
	98	#endif
	99
	100	#ifndef CAP_IPC_OWNER
	101	#define CAP_IPC_OWNER 15
	102	#endif
	103
	104	#ifndef CAP_SYS_MODULE
	105	#define CAP_SYS_MODULE 16
	106	#endif
	107
	108	#ifndef CAP_SYS_RAWIO
	109	#define CAP_SYS_RAWIO 17
	110	#endif
	111
	112	#ifndef CAP_SYS_CHROOT
	113	#define CAP_SYS_CHROOT 18
	114	#endif
	115
	116	#ifndef CAP_SYS_PTRACE
	117	#define CAP_SYS_PTRACE 19
	118	#endif
	119
	120	#ifndef CAP_SYS_PACCT
	121	#define CAP_SYS_PACCT 20
24b77f47 CB	122	#endif
24b77f47 CB	123
ba2b6354	124	#ifndef CAP_SYS_ADMIN
fa934e3e CB	125	#define CAP_SYS_ADMIN 21
	126	#endif
	127
	128	#ifndef CAP_SYS_BOOT
	129	#define CAP_SYS_BOOT 22
	130	#endif
	131
	132	#ifndef CAP_SYS_NICE
	133	#define CAP_SYS_NICE 23
	134	#endif
	135
	136	#ifndef CAP_SYS_RESOURCE
	137	#define CAP_SYS_RESOURCE 24
	138	#endif
	139
	140	#ifndef CAP_SYS_TIME
	141	#define CAP_SYS_TIME 25
	142	#endif
	143
	144	#ifndef CAP_SYS_TTY_CONFIG
	145	#define CAP_SYS_TTY_CONFIG 26
	146	#endif
	147
	148	#ifndef CAP_MKNOD
	149	#define CAP_MKNOD 27
	150	#endif
	151
	152	#ifndef CAP_LEASE
	153	#define CAP_LEASE 28
ba2b6354 CB	154	#endif
ba2b6354 CB	155
f2da98c0	156	#ifndef CAP_AUDIT_WRITE
fa934e3e	157	#define CAP_AUDIT_WRITE 29
f2da98c0 CB	158	#endif
	159
	160	#ifndef CAP_AUDIT_CONTROL
fa934e3e	161	#define CAP_AUDIT_CONTROL 30
f2da98c0 CB	162	#endif
f2da98c0 CB	163
279c45ee	164	#ifndef CAP_SETFCAP
fa934e3e	165	#define CAP_SETFCAP 31
279c45ee CB	166	#endif
	167
	168	#ifndef CAP_MAC_OVERRIDE
fa934e3e	169	#define CAP_MAC_OVERRIDE 32
279c45ee CB	170	#endif
	171
	172	#ifndef CAP_MAC_ADMIN
fa934e3e	173	#define CAP_MAC_ADMIN 33
279c45ee	174	#endif
279c45ee	175
f2da98c0	176	#ifndef CAP_SYSLOG
fa934e3e	177	#define CAP_SYSLOG 34
f2da98c0 CB	178	#endif
	179
	180	#ifndef CAP_WAKE_ALARM
fa934e3e	181	#define CAP_WAKE_ALARM 35
f2da98c0 CB	182	#endif
	183
	184	#ifndef CAP_BLOCK_SUSPEND
fa934e3e	185	#define CAP_BLOCK_SUSPEND 36
f2da98c0 CB	186	#endif
	187
	188	#ifndef CAP_AUDIT_READ
fa934e3e	189	#define CAP_AUDIT_READ 37
f2da98c0 CB	190	#endif
f2da98c0 CB	191
7b4cd468	192	#ifndef CAP_PERFMON
fa934e3e	193	#define CAP_PERFMON 38
7b4cd468 CB	194	#endif
	195
	196	#ifndef CAP_BPF
fa934e3e	197	#define CAP_BPF 39
7b4cd468 CB	198	#endif
	199
	200	#ifndef CAP_CHECKPOINT_RESTORE
fa934e3e	201	#define CAP_CHECKPOINT_RESTORE 40
7b4cd468 CB	202	#endif
7b4cd468 CB	203
ba2b6354	204	/* prctl */
1f207a5c CB	205	#ifndef PR_CAPBSET_READ
	206	#define PR_CAPBSET_READ 23
	207	#endif
	208
ba2b6354	209	#ifndef PR_CAPBSET_DROP
604ca1c0 CB	210	#define PR_CAPBSET_DROP 24
	211	#endif
	212
1f207a5c CB	213	/* Control the ambient capability set */
	214	#ifndef PR_CAP_AMBIENT
	215	#define PR_CAP_AMBIENT 47
	216	#endif
	217
	218	#ifndef PR_CAP_AMBIENT_IS_SET
	219	#define PR_CAP_AMBIENT_IS_SET 1
	220	#endif
	221
	222	#ifndef PR_CAP_AMBIENT_RAISE
	223	#define PR_CAP_AMBIENT_RAISE 2
	224	#endif
	225
	226	#ifndef PR_CAP_AMBIENT_LOWER
	227	#define PR_CAP_AMBIENT_LOWER 3
	228	#endif
	229
	230	#ifndef PR_CAP_AMBIENT_CLEAR_ALL
	231	#define PR_CAP_AMBIENT_CLEAR_ALL 4
	232	#endif
	233
ba2b6354	234	#ifndef PR_SET_NO_NEW_PRIVS
604ca1c0 CB	235	#define PR_SET_NO_NEW_PRIVS 38
	236	#endif
	237
ba2b6354	238	#ifndef PR_GET_NO_NEW_PRIVS
604ca1c0 CB	239	#define PR_GET_NO_NEW_PRIVS 39
	240	#endif
	241
ba2b6354	242	/* filesystem magic values */
279c45ee CB	243	#ifndef CGROUP_SUPER_MAGIC
	244	#define CGROUP_SUPER_MAGIC 0x27e0eb
	245	#endif
	246
	247	#ifndef CGROUP2_SUPER_MAGIC
	248	#define CGROUP2_SUPER_MAGIC 0x63677270
	249	#endif
	250
f26dc127 CB	251	#ifndef NSFS_MAGIC
	252	#define NSFS_MAGIC 0x6e736673
	253	#endif
	254
ba2b6354	255	/* current overlayfs */
37ef15bb CB	256	#ifndef OVERLAY_SUPER_MAGIC
	257	#define OVERLAY_SUPER_MAGIC 0x794c7630
	258	#endif
	259
ba2b6354 CB	260	/* legacy overlayfs */
	261	#ifndef OVERLAYFS_SUPER_MAGIC
	262	#define OVERLAYFS_SUPER_MAGIC 0x794c764f
	263	#endif
	264
f246d9b8 CB	265	/* Calculate the number of chars needed to represent a given integer as a C
	266	* string. Include room for '-' to indicate negative numbers and the \0 byte.
	267	* This is based on systemd.
	268	*/
	269	#define INTTYPE_TO_STRLEN(type) \
	270	(2 + (sizeof(type) <= 1 \
	271	? 3 \
	272	: sizeof(type) <= 2 \
	273	? 5 \
	274	: sizeof(type) <= 4 \
	275	? 10 \
	276	: sizeof(type) <= 8 \
	277	? 20 \
	278	: sizeof(int[-2 * (sizeof(type) > 8)])))
	279
279c45ee	280	/* Useful macros */
279c45ee CB	281	#define LXC_LINELEN 4096
	282	#define LXC_IDMAPLEN 4096
	283	#define LXC_MAX_BUFFER 4096
b280bc38	284	#define LXC_NAMESPACE_NAME_MAX 256
0c5ea884	285
c538837d CB	286	/* /proc/ = 6
	287	* +
	288	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
	289	* +
	290	* /fd/ = 4
	291	* +
	292	* <fd-as-str> = INTTYPE_TO_STRLEN(int)
	293	* +
	294	* \0 = 1
	295	*/
	296	#define LXC_PROC_PID_LEN \
	297	(6 + INTTYPE_TO_STRLEN(pid_t) + 1)
	298
279c45ee CB	299	/* /proc/ = 6
279c45ee CB	300	* +
0c5ea884	301	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
279c45ee CB	302	* +
	303	* /fd/ = 4
	304	* +
0c5ea884	305	* <fd-as-str> = INTTYPE_TO_STRLEN(int)
279c45ee CB	306	* +
	307	* \0 = 1
	308	*/
0c9b1f82 CB	309	#define LXC_PROC_PID_FD_LEN \
	310	(6 + INTTYPE_TO_STRLEN(pid_t) + 4 + INTTYPE_TO_STRLEN(int) + 1)
	311
	312	/* /proc/ = 6
	313	* +
	314	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
	315	* +
	316	* /status = 7
	317	* +
	318	* \0 = 1
	319	*/
	320	#define LXC_PROC_STATUS_LEN (6 + INTTYPE_TO_STRLEN(pid_t) + 7 + 1)
	321
	322	/* /proc/ = 6
	323	* +
	324	* <pid-as-str> = INTTYPE_TO_STRLEN(pid_t)
	325	* +
	326	* /attr/ = 6
	327	* +
	328	* /current = 8
	329	* +
	330	* \0 = 1
	331	*/
	332	#define LXC_LSMATTRLEN (6 + INTTYPE_TO_STRLEN(pid_t) + 6 + 8 + 1)
0c5ea884	333
3c736187	334	#define LXC_CMD_DATA_MAX (PATH_MAX * 2)
279c45ee CB	335
	336	/* loop devices */
	337	#ifndef LO_FLAGS_AUTOCLEAR
	338	#define LO_FLAGS_AUTOCLEAR 4
	339	#endif
	340
	341	#ifndef LOOP_CTL_GET_FREE
	342	#define LOOP_CTL_GET_FREE 0x4C82
	343	#endif
	344
	345	/* memfd_create() */
	346	#ifndef MFD_CLOEXEC
	347	#define MFD_CLOEXEC 0x0001U
	348	#endif
	349
	350	#ifndef MFD_ALLOW_SEALING
	351	#define MFD_ALLOW_SEALING 0x0002U
	352	#endif
	353
	354	/**
	355	* BUILD_BUG_ON - break compile if a condition is true.
	356	* @condition: the condition which the compiler should know is false.
	357	*
	358	* If you have some code which relies on certain constants being equal, or
	359	* other compile-time-evaluated condition, you should use BUILD_BUG_ON to
	360	* detect if someone changes it.
	361	*
	362	* The implementation uses gcc's reluctance to create a negative array, but
	363	* gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments
	364	* to inline functions). So as a fallback we use the optimizer; if it can't
	365	* prove the condition is false, it will cause a link error on the undefined
	366	* "__build_bug_on_failed". This error message can be harder to track down
	367	* though, hence the two different methods.
	368	*/
	369	#ifndef __OPTIMIZE__
ba2b6354	370	#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2 * !!(condition)]))
279c45ee CB	371	#else
279c45ee CB	372	extern int __build_bug_on_failed;
ba2b6354 CB	373	#define BUILD_BUG_ON(condition) \
	374	do { \
	375	((void)sizeof(char[1 - 2 * !!(condition)])); \
	376	if (condition) \
	377	__build_bug_on_failed = 1; \
	378	} while (0)
279c45ee CB	379	#endif
	380
	381	#define lxc_iterate_parts(__iterator, __splitme, __separators) \
	382	for (char __p = NULL, __it = strtok_r(__splitme, __separators, &__p); \
	383	(__iterator = __it); \
	384	__iterator = __it = strtok_r(NULL, __separators, &__p))
	385
b81689a1 CB	386	#define prctl_arg(x) ((unsigned long)x)
b81689a1 CB	387
4fb34c04	388	/* networking */
c8ca5a43 CB	389	#ifndef NETLINK_GET_STRICT_CHK
c8ca5a43 CB	390	#define NETLINK_GET_STRICT_CHK 12
8df6fa99 CB	391	#endif
8df6fa99 CB	392
d38f5b17 CB	393	#ifndef SOL_NETLINK
	394	#define SOL_NETLINK 270
	395	#endif
	396
4fb34c04 CB	397	#ifndef IFLA_LINKMODE
	398	#define IFLA_LINKMODE 17
	399	#endif
	400
	401	#ifndef IFLA_LINKINFO
	402	#define IFLA_LINKINFO 18
	403	#endif
	404
	405	#ifndef IFLA_NET_NS_PID
	406	#define IFLA_NET_NS_PID 19
	407	#endif
	408
0037ab49 TP	409	#ifndef IFLA_NET_NS_FD
	410	#define IFLA_NET_NS_FD 28
	411	#endif
	412
4fb34c04 CB	413	#ifndef IFLA_INFO_KIND
	414	#define IFLA_INFO_KIND 1
	415	#endif
	416
	417	#ifndef IFLA_VLAN_ID
	418	#define IFLA_VLAN_ID 1
	419	#endif
	420
	421	#ifndef IFLA_INFO_DATA
	422	#define IFLA_INFO_DATA 2
	423	#endif
	424
	425	#ifndef VETH_INFO_PEER
	426	#define VETH_INFO_PEER 1
	427	#endif
	428
3f0ed090 TP	429	#ifndef VETH_MODE_BRIDGE
	430	#define VETH_MODE_BRIDGE 1
	431	#endif
	432
	433	#ifndef VETH_MODE_ROUTER
	434	#define VETH_MODE_ROUTER 2
	435	#endif
	436
4fb34c04 CB	437	#ifndef IFLA_MACVLAN_MODE
	438	#define IFLA_MACVLAN_MODE 1
	439	#endif
	440
c9f52382	441	#ifndef IFLA_IPVLAN_MODE
	442	#define IFLA_IPVLAN_MODE 1
	443	#endif
	444
	445	#ifndef IFLA_IPVLAN_ISOLATION
	446	#define IFLA_IPVLAN_ISOLATION 2
	447	#endif
	448
4fb34c04 CB	449	#ifndef IFLA_NEW_NETNSID
	450	#define IFLA_NEW_NETNSID 45
	451	#endif
	452
cc6119a0 CB	453	#ifdef IFLA_IF_NETNSID
	454	#ifndef IFLA_TARGET_NETNSID
	455	#define IFLA_TARGET_NETNSID = IFLA_IF_NETNSID
	456	#endif
	457	#else
4fb34c04	458	#define IFLA_IF_NETNSID 46
cc6119a0 CB	459	#define IFLA_TARGET_NETNSID 46
	460	#endif
	461
	462	#ifndef IFA_TARGET_NETNSID
	463	#define IFA_TARGET_NETNSID 10
4fb34c04 CB	464	#endif
4fb34c04 CB	465
da5efb6f CB	466	#ifndef IFLA_STATS
	467	#define IFLA_STATS 7
	468	#endif
	469
	470	#ifndef IFLA_STATS64
	471	#define IFLA_STATS64 23
	472	#endif
cc6119a0	473
873c6e87 CB	474	#ifndef RTM_NEWNSID
	475	#define RTM_NEWNSID 88
	476	#endif
	477
938980ba CB	478	#ifndef RTM_GETNSID
	479	#define RTM_GETNSID 90
	480	#endif
	481
4e3ed0d1 CB	482	#ifndef NLMSG_ERROR
	483	#define NLMSG_ERROR 0x2
	484	#endif
	485
7b15813c CB	486	#ifndef MACVLAN_MODE_PRIVATE
	487	#define MACVLAN_MODE_PRIVATE 1
	488	#endif
	489
	490	#ifndef MACVLAN_MODE_VEPA
	491	#define MACVLAN_MODE_VEPA 2
	492	#endif
	493
	494	#ifndef MACVLAN_MODE_BRIDGE
	495	#define MACVLAN_MODE_BRIDGE 4
	496	#endif
	497
	498	#ifndef MACVLAN_MODE_PASSTHRU
	499	#define MACVLAN_MODE_PASSTHRU 8
	500	#endif
	501
c9f52382	502	#ifndef IPVLAN_MODE_L2
	503	#define IPVLAN_MODE_L2 0
	504	#endif
	505
	506	#ifndef IPVLAN_MODE_L3
	507	#define IPVLAN_MODE_L3 1
	508	#endif
	509
	510	#ifndef IPVLAN_MODE_L3S
	511	#define IPVLAN_MODE_L3S 2
	512	#endif
	513
	514	#ifndef IPVLAN_ISOLATION_BRIDGE
	515	#define IPVLAN_ISOLATION_BRIDGE 0
	516	#endif
	517
	518	#ifndef IPVLAN_ISOLATION_PRIVATE
	519	#define IPVLAN_ISOLATION_PRIVATE 1
	520	#endif
	521
	522	#ifndef IPVLAN_ISOLATION_VEPA
	523	#define IPVLAN_ISOLATION_VEPA 2
	524	#endif
	525
53a9ba7f TP	526	#ifndef BRIDGE_VLAN_NONE
	527	#define BRIDGE_VLAN_NONE -1 /* Bridge VLAN option set to "none". */
	528	#endif
	529
2abd5206 TP	530	#ifndef BRIDGE_VLAN_ID_MAX
	531	#define BRIDGE_VLAN_ID_MAX 4094 /* Bridge VLAN MAX VLAN ID. */
	532	#endif
	533
59315a06	534	#ifndef BRIDGE_FLAGS_MASTER
0dc9a142	535	#define BRIDGE_FLAGS_MASTER 1 /* Bridge command to/from parent */
59315a06 TP	536	#endif
	537
	538	#ifndef BRIDGE_VLAN_INFO_PVID
	539	#define BRIDGE_VLAN_INFO_PVID (1<<1) /* VLAN is PVID, ingress untagged */
	540	#endif
	541
	542	#ifndef BRIDGE_VLAN_INFO_UNTAGGED
	543	#define BRIDGE_VLAN_INFO_UNTAGGED (1<<2) /* VLAN egresses untagged */
	544	#endif
	545
	546	#ifndef IFLA_BRIDGE_FLAGS
	547	#define IFLA_BRIDGE_FLAGS 0
	548	#endif
	549
	550	#ifndef IFLA_BRIDGE_VLAN_INFO
	551	#define IFLA_BRIDGE_VLAN_INFO 2
	552	#endif
	553
cc6119a0 CB	554	/* Attributes of RTM_NEWNSID/RTM_GETNSID messages */
	555	enum {
	556	__LXC_NETNSA_NONE,
	557	#define __LXC_NETNSA_NSID_NOT_ASSIGNED -1
	558	__LXC_NETNSA_NSID,
	559	__LXC_NETNSA_PID,
	560	__LXC_NETNSA_FD,
	561	__LXC_NETNSA_MAX,
	562	};
	563
b1234129 CB	564	/* Length of abstract unix domain socket socket address. */
	565	#define LXC_AUDS_ADDR_LEN sizeof(((struct sockaddr_un *)0)->sun_path)
	566
c881c810	567	/* mount */
6e5655e0 CB	568	#ifndef MS_PRIVATE
6e5655e0 CB	569	#define MS_PRIVATE (1<<18)
c881c810 CB	570	#endif
	571
	572	#ifndef MS_SLAVE
	573	#define MS_SLAVE (1 << 19)
	574	#endif
	575
6e5655e0 CB	576	#ifndef MS_LAZYTIME
	577	#define MS_LAZYTIME (1<<25)
	578	#endif
	579
	580	#ifndef MS_REC
	581	#define MS_REC 16384
	582	#endif
	583
37ef15bb CB	584	/* open */
	585	#ifndef O_PATH
	586	#define O_PATH 010000000
	587	#endif
	588
	589	#ifndef O_NOFOLLOW
	590	#define O_NOFOLLOW 00400000
	591	#endif
	592
604ca1c0 CB	593	/* sockets */
	594	#ifndef SOCK_CLOEXEC
	595	#define SOCK_CLOEXEC 02000000
	596	#endif
	597
245532a2 CB	598	/* pointer conversion macros */
	599	#define PTR_TO_INT(p) ((int)((intptr_t)(p)))
	600	#define INT_TO_PTR(u) ((void *)((intptr_t)(u)))
	601
565eb353 CB	602	#define PTR_TO_PID(p) ((pid_t)((intptr_t)(p)))
565eb353 CB	603	#define PID_TO_PTR(u) ((void *)((intptr_t)(u)))
9234406b	604
7d2f7ae1 CB	605	#define PTR_TO_UINT64(p) ((uint64_t)((uintptr_t)(p)))
7d2f7ae1 CB	606	#define PTR_TO_U64(p) ((__u64)((uintptr_t)(p)))
bf651989	607
372adece TP	608	#define UINT_TO_PTR(u) ((void *) ((uintptr_t) (u)))
	609	#define PTR_TO_USHORT(p) ((unsigned short)((uintptr_t)(p)))
	610
b962868f CB	611	#define LXC_INVALID_UID ((uid_t)-1)
	612	#define LXC_INVALID_GID ((gid_t)-1)
	613
36dee4a2 CB	614	#define STRLITERALLEN(x) (sizeof(""x"") - 1)
	615	#define STRARRAYLEN(x) (sizeof(x) - 1)
	616
7c4d9466 CB	617	/* Maximum number of bytes sendfile() is able to send in one go. */
	618	#define LXC_SENDFILE_MAX 0x7ffff000
	619
e4edf5d7 CB	620	#define move_ptr(ptr) \
	621	({ \
	622	typeof(ptr) __internal_ptr__ = (ptr); \
	623	(ptr) = NULL; \
	624	__internal_ptr__; \
c74da4ab CB	625	})
c74da4ab CB	626
240fecd0 CB	627	#define move_fd(fd) \
	628	({ \
	629	int __internal_fd__ = (fd); \
	630	(fd) = -EBADF; \
	631	__internal_fd__; \
4101805b CB	632	})
4101805b CB	633
d7d1e27a CB	634	#define ret_set_errno(__ret__, __errno__) \
	635	({ \
	636	typeof(__ret__) __internal_ret__ = (__ret__); \
	637	errno = (__errno__); \
	638	__internal_ret__; \
c581d2a6 CB	639	})
c581d2a6 CB	640
d7d1e27a CB	641	#define ret_errno(__errno__) \
	642	({ \
	643	errno = (__errno__); \
	644	-(__errno__); \
9958e6fe CB	645	})
9958e6fe CB	646
d7d1e27a CB	647	#define free_move_ptr(a, b) \
	648	({ \
	649	free(a); \
	650	(a) = move_ptr((b)); \
46383a85 CB	651	})
46383a85 CB	652
eff0e7bb RK	653	/* Container's specific file/directory names */
	654	#define LXC_CONFIG_FNAME "config"
	655	#define LXC_PARTIAL_FNAME "partial"
	656	#define LXC_ROOTFS_DNAME "rootfs"
	657	#define LXC_TIMESTAMP_FNAME "ts"
	658	#define LXC_COMMENT_FNAME "comment"
	659
bf651989 CB	660	#define ARRAY_SIZE(x) \
	661	(__builtin_choose_expr(!__builtin_types_compatible_p(typeof(x), \
	662	typeof(&*(x))), \
	663	sizeof(x) / sizeof((x)[0]), ((void)0)))
	664
07002a08 CB	665	#ifndef TIOCGPTPEER
	666	#if defined __sparc__
	667	#define TIOCGPTPEER _IO('t', 137)
	668	#else
	669	#define TIOCGPTPEER _IO('T', 0x41)
	670	#endif
	671	#endif
	672
279c45ee	673	#endif /* __LXC_MACRO_H */