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

fusl/include/stropts.h

+#ifndef _STROPTS_H
+#define _STROPTS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define __SID           ('S' << 8)
+
+#define I_NREAD         (__SID | 1)
+#define I_PUSH          (__SID | 2)
+#define I_POP           (__SID | 3)
+#define I_LOOK          (__SID | 4)
+#define I_FLUSH         (__SID | 5)
+#define I_SRDOPT        (__SID | 6)
+#define I_GRDOPT        (__SID | 7)
+#define I_STR           (__SID | 8)
+#define I_SETSIG        (__SID | 9)
+#define I_GETSIG        (__SID |10)
+#define I_FIND          (__SID |11)
+#define I_LINK          (__SID |12)
+#define I_UNLINK        (__SID |13)
+#define I_PEEK          (__SID |15)
+#define I_FDINSERT      (__SID |16)
+#define I_SENDFD        (__SID |17)
+#define I_RECVFD        (__SID |14)
+#define I_SWROPT        (__SID |19)
+#define I_GWROPT        (__SID |20)
+#define I_LIST          (__SID |21)
+#define I_PLINK         (__SID |22)
+#define I_PUNLINK       (__SID |23)
+#define I_FLUSHBAND     (__SID |28)
+#define I_CKBAND        (__SID |29)
+#define I_GETBAND       (__SID |30)
+#define I_ATMARK        (__SID |31)
+#define I_SETCLTIME     (__SID |32)
+#define I_GETCLTIME     (__SID |33)
+#define I_CANPUT        (__SID |34)
+
+#define FMNAMESZ        8
+
+#define FLUSHR          0x01
+#define FLUSHW          0x02
+#define FLUSHRW         0x03
+#define FLUSHBAND       0x04
+
+#define S_INPUT         0x0001
+#define S_HIPRI         0x0002
+#define S_OUTPUT        0x0004
+#define S_MSG           0x0008
+#define S_ERROR         0x0010
+#define S_HANGUP        0x0020
+#define S_RDNORM        0x0040
+#define S_WRNORM        S_OUTPUT
+#define S_RDBAND        0x0080
+#define S_WRBAND        0x0100
+#define S_BANDURG       0x0200
+
+#define RS_HIPRI        0x01
+
+#define RNORM           0x0000
+#define RMSGD           0x0001
+#define RMSGN           0x0002
+#define RPROTDAT        0x0004
+#define RPROTDIS        0x0008
+#define RPROTNORM       0x0010
+#define RPROTMASK       0x001C
+
+#define SNDZERO         0x001
+#define SNDPIPE         0x002
+
+#define ANYMARK         0x01
+#define LASTMARK        0x02
+
+#define MUXID_ALL       (-1)
+
+#define MSG_HIPRI       0x01
+#define MSG_ANY         0x02
+#define MSG_BAND        0x04
+
+#define MORECTL         1
+#define MOREDATA        2
+
+struct bandinfo {
+        unsigned char bi_pri;
+        int bi_flag;
+};
+
+struct strbuf {
+        int maxlen;
+        int len;
+        char *buf;
+};
+
+struct strpeek {
+        struct strbuf ctlbuf;
+        struct strbuf databuf;
+        unsigned flags;
+};
+
+struct strfdinsert {
+        struct strbuf ctlbuf;
+        struct strbuf databuf;
+        unsigned flags;
+        int fildes;
+        int offset;
+};
+
+struct strioctl {
+        int ic_cmd;
+        int ic_timout;
+        int ic_len;
+        char *ic_dp;
+};
+
+struct strrecvfd {
+        int fd;
+        int uid;
+        int gid;
+        char __fill[8];
+};
+
+struct str_mlist {
+        char l_name[FMNAMESZ + 1];
+};
+
+struct str_list {
+        int sl_nmods;
+        struct str_mlist *sl_modlist;
+};
+
+int isastream(int);
+int ioctl(int, int, ...);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif