Add a "fork" of musl as //fusl.

fusl/include/scsi/sg.h

+#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