Date: Sun, 06 Jul 2003 09:17:09 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Matthew Emmerton <matt@gsicomp.on.ca> Cc: freebsd-hackers@freebsd.org Subject: Re: RFC: Change to sys_errlist Message-ID: <3F084B85.5CF7F6B0@mindspring.com> References: <001901c34256$95e4db10$1200a8c0@gsicomp.on.ca>
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Matthew Emmerton wrote: > This is a RFC on a change to sys_errlist for errno = 0. > > On Linux, if perror() or strerror() is called with errno = 0, the resulting > string is "Success". > On FreeBSD, the resulting string is "Unknown error: 0". > > I think that FreeBSD's output is unintentionally confusing, as errno = 0 > implies success. > > The following patch will change the output to the Linux behaviour. > > I appreciate any comments. Actually, I ran into a situation on MacOS X the other day that had a system call with a -1 return code with an errno == 0. I would personally like to distinguish this case, if only for the purpose of catching kernel errors. Saying "Success" when in fact the system call is returning -1 is a bogus thing to do. -- Terry
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