Add original unix v6

source/s4/errlst.c

@@ -0,0 +1,36 @@
+char	*sys_errlist[] {
+	"Error 0",
+	"Not super-user",
+	"No such file or directory",
+	"No such process",
+	"Interrupted system call",
+	"I/O error",
+	"No such device or address",
+	"Arg list too long",
+	"Exec format error",
+	"Bad file number",
+	"No children",
+	"No more processes",
+	"Not enough core",
+	"Permission denied",
+	"Error 14",
+	"Block device required",
+	"Mount device busy",
+	"File exists",
+	"Cross-device link",
+	"No such device",
+	"Not a directory",
+	"Is a directory",
+	"Invalid argument",
+	"File table overflow",
+	"Too many open files",
+	"Not a typewriter",
+	"Text file busy",
+	"File too large",
+	"No space left on device",
+	"Illegal seek",
+	"Read-only file system",
+	"Too many links",
+	"Broken Pipe",
+};
+int	sys_nerr { sizeof sys_errlist/sizeof sys_errlist[0] };