Add generic musl arch headers. NFC.

This allows us to then remove some of our emscripten-specific
arch headers that are not longer needed (since they do not
differ from the generic version).

This is part of making musl updates easier.

See #7279

src/struct_info.json

@@ -882,7 +882,7 @@
         ]
     },
     {
-        "file": "bits/mman.h",
+        "file": "sys/mman.h",
         "defines": [
             "MAP_ANONYMOUS",
             "MAP_FAILED",

system/lib/libc/musl/arch/generic/bits/errno.h

@@ -0,0 +1,134 @@
+#define EPERM            1
+#define ENOENT           2
+#define ESRCH            3
+#define EINTR            4
+#define EIO              5
+#define ENXIO            6
+#define E2BIG            7
+#define ENOEXEC          8
+#define EBADF            9
+#define ECHILD          10
+#define EAGAIN          11
+#define ENOMEM          12
+#define EACCES          13
+#define EFAULT          14
+#define ENOTBLK         15
+#define EBUSY           16
+#define EEXIST          17
+#define EXDEV           18
+#define ENODEV          19
+#define ENOTDIR         20
+#define EISDIR          21
+#define EINVAL          22
+#define ENFILE          23
+#define EMFILE          24
+#define ENOTTY          25
+#define ETXTBSY         26
+#define EFBIG           27
+#define ENOSPC          28
+#define ESPIPE          29
+#define EROFS           30
+#define EMLINK          31
+#define EPIPE           32
+#define EDOM            33
+#define ERANGE          34
+#define EDEADLK         35
+#define ENAMETOOLONG    36
+#define ENOLCK          37
+#define ENOSYS          38
+#define ENOTEMPTY       39
+#define ELOOP           40
+#define EWOULDBLOCK     EAGAIN
+#define ENOMSG          42
+#define EIDRM           43
+#define ECHRNG          44
+#define EL2NSYNC        45
+#define EL3HLT          46
+#define EL3RST          47
+#define ELNRNG          48
+#define EUNATCH         49
+#define ENOCSI          50
+#define EL2HLT          51
+#define EBADE           52
+#define EBADR           53
+#define EXFULL          54
+#define ENOANO          55
+#define EBADRQC         56
+#define EBADSLT         57
+#define EDEADLOCK       EDEADLK
+#define EBFONT          59
+#define ENOSTR          60
+#define ENODATA         61
+#define ETIME           62
+#define ENOSR           63
+#define ENONET          64
+#define ENOPKG          65
+#define EREMOTE         66
+#define ENOLINK         67
+#define EADV            68
+#define ESRMNT          69
+#define ECOMM           70
+#define EPROTO          71
+#define EMULTIHOP       72
+#define EDOTDOT         73
+#define EBADMSG         74
+#define EOVERFLOW       75
+#define ENOTUNIQ        76
+#define EBADFD          77
+#define EREMCHG         78
+#define ELIBACC         79
+#define ELIBBAD         80
+#define ELIBSCN         81
+#define ELIBMAX         82
+#define ELIBEXEC        83
+#define EILSEQ          84
+#define ERESTART        85
+#define ESTRPIPE        86
+#define EUSERS          87
+#define ENOTSOCK        88
+#define EDESTADDRREQ    89
+#define EMSGSIZE        90
+#define EPROTOTYPE      91
+#define ENOPROTOOPT     92
+#define EPROTONOSUPPORT 93
+#define ESOCKTNOSUPPORT 94
+#define EOPNOTSUPP      95
+#define ENOTSUP         EOPNOTSUPP
+#define EPFNOSUPPORT    96
+#define EAFNOSUPPORT    97
+#define EADDRINUSE      98
+#define EADDRNOTAVAIL   99
+#define ENETDOWN        100
+#define ENETUNREACH     101
+#define ENETRESET       102
+#define ECONNABORTED    103
+#define ECONNRESET      104
+#define ENOBUFS         105
+#define EISCONN         106
+#define ENOTCONN        107
+#define ESHUTDOWN       108
+#define ETOOMANYREFS    109
+#define ETIMEDOUT       110
+#define ECONNREFUSED    111
+#define EHOSTDOWN       112
+#define EHOSTUNREACH    113
+#define EALREADY        114
+#define EINPROGRESS     115
+#define ESTALE          116
+#define EUCLEAN         117
+#define ENOTNAM         118
+#define ENAVAIL         119
+#define EISNAM          120
+#define EREMOTEIO       121
+#define EDQUOT          122
+#define ENOMEDIUM       123
+#define EMEDIUMTYPE     124
+#define ECANCELED       125
+#define ENOKEY          126
+#define EKEYEXPIRED     127
+#define EKEYREVOKED     128
+#define EKEYREJECTED    129
+#define EOWNERDEAD      130
+#define ENOTRECOVERABLE 131
+#define ERFKILL         132
+#define EHWPOISON       133

system/lib/libc/musl/arch/emscripten/bits/fcntl.h → system/lib/libc/musl/arch/generic/bits/fcntl.h

@@ -16,7 +16,7 @@
 #define O_LARGEFILE 0100000
 #define O_NOATIME  01000000
 #define O_PATH    010000000
-#define O_TMPFILE 020000000
+#define O_TMPFILE 020200000
 #define O_NDELAY O_NONBLOCK
 
 #define F_DUPFD  0

system/lib/libc/musl/arch/generic/bits/fenv.h

@@ -0,0 +1,10 @@
+#define FE_ALL_EXCEPT 0
+#define FE_TONEAREST  0
+
+typedef unsigned long fexcept_t;
+
+typedef struct {
+	unsigned long __cw;
+} fenv_t;
+
+#define FE_DFL_ENV      ((const fenv_t *) -1)

system/lib/libc/musl/arch/emscripten/bits/ioctl.h → system/lib/libc/musl/arch/generic/bits/ioctl.h

@@ -46,16 +46,23 @@
 #define TIOCSETD	0x5423
 #define TIOCGETD	0x5424
 #define TCSBRKP		0x5425
-#define TIOCTTYGSTRUCT	0x5426
 #define TIOCSBRK	0x5427
 #define TIOCCBRK	0x5428
 #define TIOCGSID	0x5429
+#define TIOCGRS485	0x542E
+#define TIOCSRS485	0x542F
 #define TIOCGPTN	0x80045430
 #define TIOCSPTLCK	0x40045431
+#define TIOCGDEV	0x80045432
 #define TCGETX		0x5432
 #define TCSETX		0x5433
 #define TCSETXF		0x5434
 #define TCSETXW		0x5435
+#define TIOCSIG		0x40045436
+#define TIOCVHANGUP	0x5437
+#define TIOCGPKT	0x80045438
+#define TIOCGPTLCK	0x80045439
+#define TIOCGEXCL	0x80045440
 
 #define FIONCLEX	0x5450
 #define FIOCLEX		0x5451
@@ -72,8 +79,6 @@
 
 #define TIOCMIWAIT	0x545C
 #define TIOCGICOUNT	0x545D
-#define TIOCGHAYESESP   0x545E
-#define TIOCSHAYESESP   0x545F
 #define FIOQSIZE	0x5460
 
 #define TIOCPKT_DATA		 0
@@ -108,7 +113,6 @@ struct winsize {
 #define TIOCM_OUT1      0x2000
 #define TIOCM_OUT2      0x4000
 #define TIOCM_LOOP      0x8000
-#define TIOCM_MODEM_BITS TIOCM_OUT2
 
 #define N_TTY           0
 #define N_SLIP          1
@@ -157,6 +161,7 @@ struct winsize {
 #define SIOCSIFMEM      0x8920
 #define SIOCGIFMTU      0x8921
 #define SIOCSIFMTU      0x8922
+#define SIOCSIFNAME     0x8923
 #define SIOCSIFHWADDR   0x8924
 #define SIOCGIFENCAP    0x8925
 #define SIOCSIFENCAP    0x8926
@@ -195,3 +200,5 @@ struct winsize {
 
 #define SIOCDEVPRIVATE		0x89F0
 #define SIOCPROTOPRIVATE	0x89E0
+
+#include <bits/ioctl_fix.h>

system/lib/libc/musl/arch/emscripten/bits/ipc.h → system/lib/libc/musl/arch/generic/bits/ipc.h

@@ -1,5 +1,4 @@
-struct ipc_perm
-{
+struct ipc_perm {
 	key_t __ipc_perm_key;
 	uid_t uid;
 	gid_t gid;

system/lib/libc/musl/arch/emscripten/bits/msg.h → system/lib/libc/musl/arch/generic/bits/msg.h

@@ -1,5 +1,4 @@
-struct msqid_ds
-{
+struct msqid_ds {
 	struct ipc_perm msg_perm;
 	time_t msg_stime;
 	int __unused1;

system/lib/libc/musl/arch/emscripten/bits/sem.h → system/lib/libc/musl/arch/generic/bits/sem.h

@@ -4,8 +4,13 @@ struct semid_ds {
 	time_t __unused1;
 	time_t sem_ctime;
 	time_t __unused2;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
 	unsigned short sem_nsems;
 	char __sem_nsems_pad[sizeof(time_t)-sizeof(short)];
+#else
+	char __sem_nsems_pad[sizeof(time_t)-sizeof(short)];
+	unsigned short sem_nsems;
+#endif
 	time_t __unused3;
 	time_t __unused4;
 };

system/lib/libc/musl/arch/emscripten/bits/shm.h → system/lib/libc/musl/arch/generic/bits/shm.h

@@ -1,7 +1,6 @@
 #define SHMLBA 4096
 
-struct shmid_ds
-{
+struct shmid_ds {
 	struct ipc_perm shm_perm;
 	size_t shm_segsz;
 	time_t shm_atime;
@@ -16,3 +15,14 @@ struct shmid_ds
 	unsigned long __pad1;
 	unsigned long __pad2;
 };
+
+struct shminfo {
+	unsigned long shmmax, shmmin, shmmni, shmseg, shmall, __unused[4];
+};
+
+struct shm_info {
+	int __used_ids;
+	unsigned long shm_tot, shm_rss, shm_swp;
+	unsigned long __swap_attempts, __swap_successes;
+};
+

system/lib/libc/musl/arch/emscripten/bits/socket.h → system/lib/libc/musl/arch/generic/bits/socket.h

@@ -1,5 +1,4 @@
-struct msghdr
-{
+struct msghdr {
 	void *msg_name;
 	socklen_t msg_namelen;
 	struct iovec *msg_iov;
@@ -9,8 +8,7 @@ struct msghdr
 	int msg_flags;
 };
 
-struct cmsghdr
-{
+struct cmsghdr {
 	socklen_t cmsg_len;
 	int cmsg_level;
 	int cmsg_type;