rtapi_strlcpy(3)

rtapi_strlcpy will copy at most sz chars from src to dst. Always leaves dst NUL-terminated except if sz is 0.

rtapi_strxcpy(dst, src) checks that dst is an array with known size, and calls rtapi_strlcpy(dst, src, sizeof(dst)). If it is not an array with a known size, it is a (possibly cryptic!) syntax error.

rtapi_strlcat will append characters from src to dst, stopping when the end of src is reached, or dst uses sz-many bytes of storage including the tailing null.

rtapi_strxcat(dst, src) checks that dst is an array with known size, and calls rtapi_strlcat(dst, src, sizeof(dst)). If it is not an array with a known size, it is a (possibly cryptic!) syntax error.

The total length of the string strlcpy or strlcat tried to create. For strlcpy() that means the length of src. If the return value is greater than or equal to sz, the result was truncated.

strlcpy(3bsd), strlcat(3bsd)