nativelibc/errno.c

#include <errno.h>

static int errno_private = 0;

#if 0

struct errentry {
	unsigned long int ntstatus;
	int errno;
};

static struct errentry errtable[] = {
	{ 0x00000000L,	0	},
	{ 0x00000102L,	ETIME	}
};

int ntstatus_to_errno(long int ntstatus) {
	int i;
	for(i = 0; i < (sizeof errtable / sizeof *errtable); i++) if(ntstatus == errtable.ntstatus) return errno_private = errtable.errno;
	return errno_private = ntstatus_to_errno_other(ntstatus);
}

#else

static int ntstatus_to_errno_other(long int ntstatus) {
	if(ntstatus <= 0xC0000403L && ntstatus >= 0xC0000401L) return EDQUOT;
	if(ntstatus <= 0xC0000079L && ntstatus >= 0xC0000076L) return EINVAL;
	if(ntstatus <= 0xC0000070L && ntstatus >= 0xC000006DL) return EACCES;
	if(ntstatus <= 0xC0000062L && ntstatus >= 0xC000005EL) return EINVAL;
	if(ntstatus <= 0xC0000018L && ntstatus >= 0xC000001BL) return EFAULT;
	if(ntstatus <= 0x80000015L && ntstatus >= 0x80000013L) return EINVAL;
	if(ntstatus <= 0x000000BFL && ntstatus >= 0x00000080L) return EOWNERDEAD;
	if(ntstatus >= 0L) return 0;

	// 0b__??0000________________________.		ntstatus
	// 0b1000__??________________________.		errno
	//   sign
	return 0x80000000 | ((ntstatus >> 4) & 0x0f000000) | (ntstatus & 0xffffff);
}

int ntstatus_to_errno(long int ntstatus) {
	switch(ntstatus){
		case 0x00000000L:
		case 0x00000103L:
		case 0xC0000011L:
		case 0xFFFFFFFFL: return errno_private = 0;
		case 0x00000102L: return errno_private = ETIME;
		case 0x00000104L:
		case 0x00000118L:
		case 0x8000002DL: return errno_private = ENOLINK;
		case 0x00000107L: return errno_private = ENOMSG;
		case 0x0000010DL:
		case 0xC0000007L:
		case 0xC0000031L:
		case 0xC0000044L:
		case 0xC000012CL:
		case 0xC00002E7L:
		case 0xC0000410L:
		case 0xC0000802L: return errno_private = EDQUOT;
		case 0x0000010EL: return errno_private = ECONNABORTED;
		case 0x00000114L: return errno_private = EHWPOISON;
		case 0x00000119L:
		case 0x80000011L:
		case 0xC0000016L: 
		case 0xC000009AL:
		case 0xC00000AEL: return errno_private = EBUSY;

		case 0x40000003L:
		case 0x4000000EL:
		case 0x40000023L:
		case 0xC000007BL: return errno_private = ENOEXEC;
		case 0x4000001BL:
		case 0x40190035L: return errno_private = EALREADY;
		case 0x401E000AL:
		case 0x80000001L:
		case 0x80000005L:
		case 0x801C0001L:
		case 0xC0000023L:
		case 0xC00000A1L: return errno_private = ENOBUFS;
		case 0x401E034BL: 
		case 0x401E034CL:
		case 0xC0000008L:
		case 0xC0000042L: return errno_private = EBADR;
		case 0x401E042FL:
		case 0x8000000FL:
		case 0xC000000EL: return errno_private = ENODEV;
		case 0x80000017L: return errno_private = EMSGSIZE;
		case 0x80000025L:
		case 0x80130004L:
		case 0xC0000037L: return errno_private = ENOTCONN;
		case 0x80000288L: return errno_private = EUCLEAN;
		case 0x80130003L: return errno_private = EISCONN;
		case 0x80190029L:
		case 0xC0000089L: return errno_private = ENODATA;
		case 0x80190031L:
		case 0xC0000022L:
		case 0xC0000038L:
		case 0xC0000043L:
		case 0xC0000046L:
		case 0xC0000054L:
		case 0xC000006AL:
		case 0xC0000072L: return errno_private = EACCES;
		case 0x80210001L:
		case 0xC0000006L:
		case 0xC0000020L:
		case 0xC000002BL:
		case 0xC0000032L:
		case 0xC000003EL:
		case 0xC000009CL: return errno_private = EIO;
		case 0xC0000002L:
		case 0xC000004FL: return errno_private = ENOSYS;
		case 0xC0000003L:
		case 0xC000000DL:
		case 0xC000001CL:
		case 0xC000001FL:
		case 0xC0000024L:
		case 0xC0000030L:
		case 0xC0000033L:
		case 0xC000004CL:
		case 0xC0000050L:
		case 0xC0000051L:
		case 0xC000005AL:
		case 0xC000005BL:
		case 0xC000006BL:
		case 0xC000006CL:
		case 0xC000007CL:
		case 0xC000007EL:
		case 0xC0000084L:
		case 0xC0000086L:
		case 0xC00000A8L: return errno_private = EINVAL;
		case 0xC0000005L:
		case 0xC0000009L:
		case 0xC000000AL: 
		case 0xC000001DL:
		case 0xC0000025L:
		case 0xC000002CL:
		case 0xC000007AL:
		case 0xC000009FL:
		case 0xC00000A0L: return errno_private = EFAULT;
		case 0xC000000FL:
		case 0xC0000034L:
		case 0xC000003AL: return errno_private = ENOENT;
		case 0xC0000010L:
		case 0xC0000057L:
		case 0xC0000069L: return errno_private = EPERM;
		case 0xC0000012L:
		case 0xC0000014L: return errno_private = EMEDIUMTYPE;
		case 0xC0000013L: return errno_private = ENOMEDIUM;
		case 0xC0000017L: return errno_private = ENOMEM;
		case 0xC0000021L: return errno_private = EADDRINUSE;
		case 0xC0000035L: return errno_private = EEXIST;
		case 0xC0000039L:
		case 0xC000003BL: return errno_private = ENOTDIR;
		case 0xC000003CL:
		case 0xC0000091L:
		case 0xC0000095L: return errno_private = EOVERFLOW;
		case 0xC0000041L: return errno_private = ECONNREFUSED;
		case 0xC000007FL: return errno_private = ENOSPC;
		case 0xC0000056L: 
		case 0xC0000467L: return errno_private = ETXTBSY;
		case 0xC000008DL: return errno_private = EDOM;
		case 0xC0000098L:
		case 0xC00000ACL:
		case 0xC00000AFL: return errno_private = EBADFD;
		case 0xC000009DL: return errno_private = ENXIO;
		case 0xC00000A2L: return errno_private = EROFS;
		case 0xC00000A3L: return errno_private = ENOMEDIUM;
		case 0xC00000A9L: return errno_private = EMEDIUMTYPE;
		case 0xC00000ABL: return errno_private = EMFILE;
		//case 0x00000080L: return errno_private = EOWNERDEAD;
		//default: return errno_private = EINVAL;
		//default: return errno_private = -1;
	}
	return errno_private = ntstatus_to_errno_other(ntstatus);
}

#endif

int *_errno() {
	return &errno_private;
}