Re: Is there a way to get "EINVAL" style string
|[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]|
Hi Michael On 22/04/12 22:25, Michael Kerrisk (man-pages) wrote:
Hi Jon, On Sun, Apr 22, 2012 at 11:14 PM, Jon Grant<jg@xxxxxxxx> wrote:Hello I was looking at the man pages looking for a way to get a string of the errno value meaning. This is kind of a user question. This API returns "returns a pointer to a string that describes the error code": http://man7.org/linux/man-pages/man3/strerror.3.html However, this is a description, e.g. "Invalid argument". Is there a function that would return "EINVAL" or "ENOENT" as the string?None that I know of. (In passing, I dealt with exactly this problem for my book with a script that generated the string names; see http://man7.org/tlpi/code/online/dist/lib/ename.c.inc.html and http://man7.org/tlpi/code/online/dist/lib/error_functions.c.html)
Interesting. I saw on the ename.c page that the numbers were in the table hard coded -- is it guaranteed that 90 will always correspond to EPROTOTYPE on a unixy system?
Could I suggest that the text on the man page be updated to clarify what would be returned: "returns a pointer to a string that describes the error code. e.g. "Invalid argument" if EINVAL was the errnum."Done for 3.40.
Great, thank you! Jon -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html