--- /dev/null
+++ b/alpine-overlay/linux/kernel.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _LINUX_KERNEL_H
+#define _LINUX_KERNEL_H
+
+#ifdef __GLIBC__
+#include <linux/sysinfo.h>
+#endif
+#include <linux/const.h>
+
+#endif /* _LINUX_KERNEL_H */
--- /dev/null
+++ b/alpine-overlay/linux/if_tunnel.h
@@ -0,0 +1,216 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _IF_TUNNEL_H_
+#define _IF_TUNNEL_H_
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+
+
+#define SIOCGETTUNNEL   (SIOCDEVPRIVATE + 0)
+#define SIOCADDTUNNEL   (SIOCDEVPRIVATE + 1)
+#define SIOCDELTUNNEL   (SIOCDEVPRIVATE + 2)
+#define SIOCCHGTUNNEL   (SIOCDEVPRIVATE + 3)
+#define SIOCGETPRL      (SIOCDEVPRIVATE + 4)
+#define SIOCADDPRL      (SIOCDEVPRIVATE + 5)
+#define SIOCDELPRL      (SIOCDEVPRIVATE + 6)
+#define SIOCCHGPRL      (SIOCDEVPRIVATE + 7)
+#define SIOCGET6RD      (SIOCDEVPRIVATE + 8)
+#define SIOCADD6RD      (SIOCDEVPRIVATE + 9)
+#define SIOCDEL6RD      (SIOCDEVPRIVATE + 10)
+#define SIOCCHG6RD      (SIOCDEVPRIVATE + 11)
+
+#define GRE_CSUM	__cpu_to_be16(0x8000)
+#define GRE_ROUTING	__cpu_to_be16(0x4000)
+#define GRE_KEY		__cpu_to_be16(0x2000)
+#define GRE_SEQ		__cpu_to_be16(0x1000)
+#define GRE_STRICT	__cpu_to_be16(0x0800)
+#define GRE_REC		__cpu_to_be16(0x0700)
+#define GRE_ACK		__cpu_to_be16(0x0080)
+#define GRE_FLAGS	__cpu_to_be16(0x0078)
+#define GRE_VERSION	__cpu_to_be16(0x0007)
+
+#define GRE_IS_CSUM(f)		((f) & GRE_CSUM)
+#define GRE_IS_ROUTING(f)	((f) & GRE_ROUTING)
+#define GRE_IS_KEY(f)		((f) & GRE_KEY)
+#define GRE_IS_SEQ(f)		((f) & GRE_SEQ)
+#define GRE_IS_STRICT(f)	((f) & GRE_STRICT)
+#define GRE_IS_REC(f)		((f) & GRE_REC)
+#define GRE_IS_ACK(f)		((f) & GRE_ACK)
+
+#define GRE_VERSION_0		__cpu_to_be16(0x0000)
+#define GRE_VERSION_1		__cpu_to_be16(0x0001)
+#define GRE_PROTO_PPP		__cpu_to_be16(0x880b)
+#define GRE_PPTP_KEY_MASK	__cpu_to_be32(0xffff)
+
+struct ip_tunnel_parm {
+	char			name[IFNAMSIZ];
+	int			link;
+	__be16			i_flags;
+	__be16			o_flags;
+	__be32			i_key;
+	__be32			o_key;
+	struct iphdr		iph;
+};
+
+enum {
+	IFLA_IPTUN_UNSPEC,
+	IFLA_IPTUN_LINK,
+	IFLA_IPTUN_LOCAL,
+	IFLA_IPTUN_REMOTE,
+	IFLA_IPTUN_TTL,
+	IFLA_IPTUN_TOS,
+	IFLA_IPTUN_ENCAP_LIMIT,
+	IFLA_IPTUN_FLOWINFO,
+	IFLA_IPTUN_FLAGS,
+	IFLA_IPTUN_PROTO,
+	IFLA_IPTUN_PMTUDISC,
+	IFLA_IPTUN_6RD_PREFIX,
+	IFLA_IPTUN_6RD_RELAY_PREFIX,
+	IFLA_IPTUN_6RD_PREFIXLEN,
+	IFLA_IPTUN_6RD_RELAY_PREFIXLEN,
+	IFLA_IPTUN_ENCAP_TYPE,
+	IFLA_IPTUN_ENCAP_FLAGS,
+	IFLA_IPTUN_ENCAP_SPORT,
+	IFLA_IPTUN_ENCAP_DPORT,
+	IFLA_IPTUN_COLLECT_METADATA,
+	IFLA_IPTUN_FWMARK,
+	__IFLA_IPTUN_MAX,
+};
+#define IFLA_IPTUN_MAX	(__IFLA_IPTUN_MAX - 1)
+
+enum tunnel_encap_types {
+	TUNNEL_ENCAP_NONE,
+	TUNNEL_ENCAP_FOU,
+	TUNNEL_ENCAP_GUE,
+	TUNNEL_ENCAP_MPLS,
+};
+
+#define TUNNEL_ENCAP_FLAG_CSUM		(1<<0)
+#define TUNNEL_ENCAP_FLAG_CSUM6		(1<<1)
+#define TUNNEL_ENCAP_FLAG_REMCSUM	(1<<2)
+
+/* SIT-mode i_flags */
+#define	SIT_ISATAP	0x0001
+
+struct ip_tunnel_prl {
+	__be32			addr;
+	__u16			flags;
+	__u16			__reserved;
+	__u32			datalen;
+	__u32			__reserved2;
+	/* data follows */
+};
+
+/* PRL flags */
+#define	PRL_DEFAULT		0x0001
+
+struct ip_tunnel_6rd {
+	struct in6_addr		prefix;
+	__be32			relay_prefix;
+	__u16			prefixlen;
+	__u16			relay_prefixlen;
+};
+
+enum {
+	IFLA_GRE_UNSPEC,
+	IFLA_GRE_LINK,
+	IFLA_GRE_IFLAGS,
+	IFLA_GRE_OFLAGS,
+	IFLA_GRE_IKEY,
+	IFLA_GRE_OKEY,
+	IFLA_GRE_LOCAL,
+	IFLA_GRE_REMOTE,
+	IFLA_GRE_TTL,
+	IFLA_GRE_TOS,
+	IFLA_GRE_PMTUDISC,
+	IFLA_GRE_ENCAP_LIMIT,
+	IFLA_GRE_FLOWINFO,
+	IFLA_GRE_FLAGS,
+	IFLA_GRE_ENCAP_TYPE,
+	IFLA_GRE_ENCAP_FLAGS,
+	IFLA_GRE_ENCAP_SPORT,
+	IFLA_GRE_ENCAP_DPORT,
+	IFLA_GRE_COLLECT_METADATA,
+	IFLA_GRE_IGNORE_DF,
+	IFLA_GRE_FWMARK,
+	IFLA_GRE_ERSPAN_INDEX,
+	IFLA_GRE_ERSPAN_VER,
+	IFLA_GRE_ERSPAN_DIR,
+	IFLA_GRE_ERSPAN_HWID,
+	__IFLA_GRE_MAX,
+};
+
+#define IFLA_GRE_MAX	(__IFLA_GRE_MAX - 1)
+
+/* VTI-mode i_flags */
+#define VTI_ISVTI ((__be16)0x0001)
+
+enum {
+	IFLA_VTI_UNSPEC,
+	IFLA_VTI_LINK,
+	IFLA_VTI_IKEY,
+	IFLA_VTI_OKEY,
+	IFLA_VTI_LOCAL,
+	IFLA_VTI_REMOTE,
+	IFLA_VTI_FWMARK,
+	__IFLA_VTI_MAX,
+};
+
+#define IFLA_VTI_MAX	(__IFLA_VTI_MAX - 1)
+
+/* Historically, tunnel flags have been defined as __be16 and now there are
+ * no free bits left. It is strongly advised to switch the already existing
+ * userspace code to the new *_BIT definitions from down below, as __be16
+ * can't be simply cast to a wider type on LE systems. All new flags and
+ * code must use *_BIT only.
+ */
+
+#define TUNNEL_CSUM		__cpu_to_be16(0x01)
+#define TUNNEL_ROUTING		__cpu_to_be16(0x02)
+#define TUNNEL_KEY		__cpu_to_be16(0x04)
+#define TUNNEL_SEQ		__cpu_to_be16(0x08)
+#define TUNNEL_STRICT		__cpu_to_be16(0x10)
+#define TUNNEL_REC		__cpu_to_be16(0x20)
+#define TUNNEL_VERSION		__cpu_to_be16(0x40)
+#define TUNNEL_NO_KEY		__cpu_to_be16(0x80)
+#define TUNNEL_DONT_FRAGMENT    __cpu_to_be16(0x0100)
+#define TUNNEL_OAM		__cpu_to_be16(0x0200)
+#define TUNNEL_CRIT_OPT		__cpu_to_be16(0x0400)
+#define TUNNEL_GENEVE_OPT	__cpu_to_be16(0x0800)
+#define TUNNEL_VXLAN_OPT	__cpu_to_be16(0x1000)
+#define TUNNEL_NOCACHE		__cpu_to_be16(0x2000)
+#define TUNNEL_ERSPAN_OPT	__cpu_to_be16(0x4000)
+#define TUNNEL_GTP_OPT		__cpu_to_be16(0x8000)
+
+#define TUNNEL_OPTIONS_PRESENT \
+		(TUNNEL_GENEVE_OPT | TUNNEL_VXLAN_OPT | TUNNEL_ERSPAN_OPT | \
+		TUNNEL_GTP_OPT)
+
+enum {
+	IP_TUNNEL_CSUM_BIT		= 0U,
+	IP_TUNNEL_ROUTING_BIT,
+	IP_TUNNEL_KEY_BIT,
+	IP_TUNNEL_SEQ_BIT,
+	IP_TUNNEL_STRICT_BIT,
+	IP_TUNNEL_REC_BIT,
+	IP_TUNNEL_VERSION_BIT,
+	IP_TUNNEL_NO_KEY_BIT,
+	IP_TUNNEL_DONT_FRAGMENT_BIT,
+	IP_TUNNEL_OAM_BIT,
+	IP_TUNNEL_CRIT_OPT_BIT,
+	IP_TUNNEL_GENEVE_OPT_BIT,	/* OPTIONS_PRESENT */
+	IP_TUNNEL_VXLAN_OPT_BIT,	/* OPTIONS_PRESENT */
+	IP_TUNNEL_NOCACHE_BIT,
+	IP_TUNNEL_ERSPAN_OPT_BIT,	/* OPTIONS_PRESENT */
+	IP_TUNNEL_GTP_OPT_BIT,		/* OPTIONS_PRESENT */
+
+	IP_TUNNEL_VTI_BIT,
+	IP_TUNNEL_SIT_ISATAP_BIT	= IP_TUNNEL_VTI_BIT,
+
+	/* Flags starting from here are not available via the old UAPI */
+	IP_TUNNEL_PFCP_OPT_BIT,		/* OPTIONS_PRESENT */
+
+	__IP_TUNNEL_FLAG_NUM,
+};
+
+#endif /* _IF_TUNNEL_H_ */
--- /dev/null
+++ b/alpine-overlay/scsi/scsi.h
@@ -0,0 +1,150 @@
+#ifndef _SCSI_SCSI_H
+#define _SCSI_SCSI_H
+
+#define TEST_UNIT_READY 0x00
+#define REZERO_UNIT 0x01
+#define REQUEST_SENSE 0x03
+#define FORMAT_UNIT 0x04
+#define READ_BLOCK_LIMITS 0x05
+#define REASSIGN_BLOCKS 0x07
+#define READ_6 0x08
+#define WRITE_6 0x0a
+#define SEEK_6 0x0b
+#define READ_REVERSE 0x0f
+#define WRITE_FILEMARKS 0x10
+#define SPACE 0x11
+#define INQUIRY 0x12
+#define RECOVER_BUFFERED_DATA 0x14
+#define MODE_SELECT 0x15
+#define RESERVE 0x16
+#define RELEASE 0x17
+#define COPY 0x18
+#define ERASE 0x19
+#define MODE_SENSE 0x1a
+#define START_STOP 0x1b
+#define RECEIVE_DIAGNOSTIC 0x1c
+#define SEND_DIAGNOSTIC 0x1d
+#define ALLOW_MEDIUM_REMOVAL 0x1e
+#define SET_WINDOW 0x24
+#define READ_CAPACITY 0x25
+#define READ_10 0x28
+#define WRITE_10 0x2a
+#define SEEK_10 0x2b
+#define WRITE_VERIFY 0x2e
+#define VERIFY 0x2f
+#define SEARCH_HIGH 0x30
+#define SEARCH_EQUAL 0x31
+#define SEARCH_LOW 0x32
+#define SET_LIMITS 0x33
+#define PRE_FETCH 0x34
+#define READ_POSITION 0x34
+#define SYNCHRONIZE_CACHE 0x35
+#define LOCK_UNLOCK_CACHE 0x36
+#define READ_DEFECT_DATA 0x37
+#define MEDIUM_SCAN 0x38
+#define COMPARE 0x39
+#define COPY_VERIFY 0x3a
+#define WRITE_BUFFER 0x3b
+#define READ_BUFFER 0x3c
+#define UPDATE_BLOCK 0x3d
+#define READ_LONG 0x3e
+#define WRITE_LONG 0x3f
+#define CHANGE_DEFINITION 0x40
+#define WRITE_SAME 0x41
+#define READ_TOC 0x43
+#define LOG_SELECT 0x4c
+#define LOG_SENSE 0x4d
+#define MODE_SELECT_10 0x55
+#define RESERVE_10 0x56
+#define RELEASE_10 0x57
+#define MODE_SENSE_10 0x5a
+#define PERSISTENT_RESERVE_IN 0x5e
+#define PERSISTENT_RESERVE_OUT 0x5f
+#define MOVE_MEDIUM 0xa5
+#define READ_12 0xa8
+#define WRITE_12 0xaa
+#define WRITE_VERIFY_12 0xae
+#define SEARCH_HIGH_12 0xb0
+#define SEARCH_EQUAL_12 0xb1
+#define SEARCH_LOW_12 0xb2
+#define READ_ELEMENT_STATUS 0xb8
+#define SEND_VOLUME_TAG 0xb6
+#define WRITE_LONG_2 0xea
+#define GOOD 0x00
+#define CHECK_CONDITION 0x01
+#define CONDITION_GOOD 0x02
+#define BUSY 0x04
+#define INTERMEDIATE_GOOD 0x08
+#define INTERMEDIATE_C_GOOD 0x0a
+#define RESERVATION_CONFLICT 0x0c
+#define COMMAND_TERMINATED 0x11
+#define QUEUE_FULL 0x14
+#define STATUS_MASK 0x3e
+#define NO_SENSE 0x00
+#define RECOVERED_ERROR 0x01
+#define NOT_READY 0x02
+#define MEDIUM_ERROR 0x03
+#define HARDWARE_ERROR 0x04
+#define ILLEGAL_REQUEST 0x05
+#define UNIT_ATTENTION 0x06
+#define DATA_PROTECT 0x07
+#define BLANK_CHECK 0x08
+#define COPY_ABORTED 0x0a
+#define ABORTED_COMMAND 0x0b
+#define VOLUME_OVERFLOW 0x0d
+#define MISCOMPARE 0x0e
+#define TYPE_DISK 0x00
+#define TYPE_TAPE 0x01
+#define TYPE_PROCESSOR 0x03
+#define TYPE_WORM 0x04
+#define TYPE_ROM 0x05
+#define TYPE_SCANNER 0x06
+#define TYPE_MOD 0x07
+#define TYPE_MEDIUM_CHANGER 0x08
+#define TYPE_ENCLOSURE 0x0d
+#define TYPE_NO_LUN 0x7f
+#define COMMAND_COMPLETE 0x00
+#define EXTENDED_MESSAGE 0x01
+#define EXTENDED_MODIFY_DATA_POINTER 0x00
+#define EXTENDED_SDTR 0x01
+#define EXTENDED_EXTENDED_IDENTIFY 0x02
+#define EXTENDED_WDTR 0x03
+#define SAVE_POINTERS 0x02
+#define RESTORE_POINTERS 0x03
+#define DISCONNECT 0x04
+#define INITIATOR_ERROR 0x05
+#define ABORT 0x06
+#define MESSAGE_REJECT 0x07
+#define NOP 0x08
+#define MSG_PARITY_ERROR 0x09
+#define LINKED_CMD_COMPLETE 0x0a
+#define LINKED_FLG_CMD_COMPLETE 0x0b
+#define BUS_DEVICE_RESET 0x0c
+#define INITIATE_RECOVERY 0x0f
+#define RELEASE_RECOVERY 0x10
+#define SIMPLE_QUEUE_TAG 0x20
+#define HEAD_OF_QUEUE_TAG 0x21
+#define ORDERED_QUEUE_TAG 0x22
+#define SCSI_IOCTL_GET_IDLUN 0x5382
+#define SCSI_IOCTL_TAGGED_ENABLE 0x5383
+#define SCSI_IOCTL_TAGGED_DISABLE 0x5384
+#define SCSI_IOCTL_PROBE_HOST 0x5385
+#define SCSI_IOCTL_GET_BUS_NUMBER 0x5386
+
+struct ccs_modesel_head {
+	unsigned char _r1;
+	unsigned char medium;
+	unsigned char _r2;
+	unsigned char block_desc_length;
+	unsigned char density;
+	unsigned char number_blocks_hi;
+	unsigned char number_blocks_med;
+	unsigned char number_blocks_lo;
+	unsigned char _r3;
+	unsigned char block_length_hi;
+	unsigned char block_length_med;
+	unsigned char block_length_lo;
+};
+
+#endif
+
--- /dev/null
+++ b/alpine-overlay/scsi/scsi_ioctl.h
@@ -0,0 +1,11 @@
+#ifndef _SCSI_IOCTL_H
+#define _SCSI_IOCTL_H
+#define SCSI_IOCTL_SEND_COMMAND 1
+#define SCSI_IOCTL_TEST_UNIT_READY 2
+#define SCSI_IOCTL_BENCHMARK_COMMAND 3
+#define SCSI_IOCTL_SYNC 4
+#define SCSI_IOCTL_START_UNIT 5
+#define SCSI_IOCTL_STOP_UNIT 6
+#define SCSI_IOCTL_DOORLOCK 0x5380
+#define SCSI_IOCTL_DOORUNLOCK 0x5381
+#endif
--- /dev/null
+++ b/alpine-overlay/scsi/sg.h
@@ -0,0 +1,129 @@
+#ifndef _SCSI_SG_H
+#define _SCSI_SG_H
+
+#define SG_DXFER_NONE -1
+#define SG_DXFER_TO_DEV -2
+#define SG_DXFER_FROM_DEV -3
+#define SG_DXFER_TO_FROM_DEV -4
+#define SG_FLAG_DIRECT_IO 1
+#define SG_FLAG_LUN_INHIBIT 2
+#define SG_FLAG_NO_DXFER 0x10000
+#define SG_INFO_OK_MASK 0x1
+#define SG_INFO_OK 0x0
+#define SG_INFO_CHECK 0x1
+#define SG_INFO_DIRECT_IO_MASK 0x6
+#define SG_INFO_INDIRECT_IO 0x0
+#define SG_INFO_DIRECT_IO 0x2
+#define SG_INFO_MIXED_IO 0x4
+#define SG_EMULATED_HOST 0x2203
+#define SG_SET_TRANSFORM 0x2204
+#define SG_GET_TRANSFORM 0x2205
+#define SG_SET_RESERVED_SIZE 0x2275
+#define SG_GET_RESERVED_SIZE 0x2272
+#define SG_GET_SCSI_ID 0x2276
+#define SG_SET_FORCE_LOW_DMA 0x2279
+#define SG_GET_LOW_DMA 0x227a
+#define SG_SET_FORCE_PACK_ID 0x227b
+#define SG_GET_PACK_ID 0x227c
+#define SG_GET_NUM_WAITING 0x227d
+#define SG_GET_SG_TABLESIZE 0x227F
+#define SG_GET_VERSION_NUM 0x2282
+#define SG_SCSI_RESET 0x2284
+#define SG_SCSI_RESET_NOTHING 0
+#define SG_SCSI_RESET_DEVICE 1
+#define SG_SCSI_RESET_BUS 2
+#define SG_SCSI_RESET_HOST 3
+#define SG_IO 0x2285
+#define SG_GET_REQUEST_TABLE 0x2286
+#define SG_SET_KEEP_ORPHAN 0x2287
+#define SG_GET_KEEP_ORPHAN 0x2288
+#define SG_SCATTER_SZ (8 * 4096)
+#define SG_DEFAULT_RETRIES 1
+#define SG_DEF_FORCE_LOW_DMA 0
+#define SG_DEF_FORCE_PACK_ID 0
+#define SG_DEF_KEEP_ORPHAN 0
+#define SG_DEF_RESERVED_SIZE SG_SCATTER_SZ
+#define SG_MAX_QUEUE 16
+#define SG_BIG_BUFF SG_DEF_RESERVED_SIZE
+#define SG_MAX_SENSE 16
+#define SG_SET_TIMEOUT 0x2201
+#define SG_GET_TIMEOUT 0x2202
+#define SG_GET_COMMAND_Q 0x2270
+#define SG_SET_COMMAND_Q 0x2271
+#define SG_SET_DEBUG 0x227e
+#define SG_NEXT_CMD_LEN 0x2283
+#define SG_DEFAULT_TIMEOUT (60*100) /* 60*HZ */
+#define SG_DEF_COMMAND_Q 0
+#define SG_DEF_UNDERRUN_FLAG 0
+
+typedef struct sg_iovec {
+	void *iov_base;
+	unsigned long iov_len;
+} sg_iovec_t;
+
+typedef struct sg_io_hdr { 
+	int interface_id; 
+	int dxfer_direction; 
+	unsigned char cmd_len;
+	unsigned char mx_sb_len;
+	unsigned short iovec_count;
+	unsigned dxfer_len;
+	void *dxferp;
+	unsigned char *cmdp;
+	unsigned char *sbp;
+	unsigned timeout;
+	unsigned flags;
+	int pack_id;
+	void *usr_ptr;
+	unsigned char status;
+	unsigned char masked_status;
+	unsigned char msg_status;
+	unsigned char sb_len_wr;
+	unsigned short host_status;
+	unsigned short driver_status;
+	int resid; 
+	unsigned int duration;
+	unsigned int info;
+} sg_io_hdr_t;
+
+struct sg_scsi_id {
+	int host_no;
+	int channel;
+	int scsi_id;
+	int lun;
+	int scsi_type;
+	short h_cmd_per_lun;
+	short d_queue_depth;
+	int unused[2];
+};
+
+typedef struct sg_req_info {
+	char req_state;
+	char orphan;
+	char sg_io_owned;
+	char problem;
+	int pack_id;
+	void *usr_ptr;
+	unsigned duration; 
+	int unused; 
+} sg_req_info_t;
+
+typedef struct sg_io_hdr Sg_io_hdr;
+typedef struct sg_io_vec Sg_io_vec;
+typedef struct sg_scsi_id Sg_scsi_id;
+typedef struct sg_req_info Sg_req_info;
+
+struct sg_header {
+	int pack_len;
+	int reply_len;
+	int pack_id;
+	int result;
+	unsigned twelve_byte:1;
+	unsigned target_status:5;
+	unsigned host_status:8;
+	unsigned driver_status:8;
+	unsigned other_flags:10;
+	unsigned char sense_buffer[SG_MAX_SENSE];
+};
+
+#endif
