Date: Sat, 7 Oct 2006 02:40:28 GMT From: Ricardo Nabinger Sanchez <rnsanchez@wait4.org> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/102694: df(1) can forget to print the unit with -h Message-ID: <200610070240.k972eSmT088967@freefall.freebsd.org>
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The following reply was made to PR bin/102694; it has been noted by GNATS. From: Ricardo Nabinger Sanchez <rnsanchez@wait4.org> To: bug-followup@FreeBSD.org Cc: ceri@FreeBSD.org Subject: Re: bin/102694: df(1) can forget to print the unit with -h Date: Fri, 6 Oct 2006 23:36:34 -0300 > Not sure if this is df(1) or libutil's humanize_number(3) > to be honest. I was looking at it and was able to reproduce it and found what's going on. What happens is that, for numbers close to the next scale (1000<= x <1024), the scaled number is big for the 6-char buffer, which in fact is told be be 6-1 bytes. From the source: humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1), bytes, "", HN_AUTOSCALE, flags); That "sizeof(buf) - (bytes < 0 ? 0 : 1)" causes humanize_number to think that the buffer has only 5 chars, thus producing: [ ][1][0][0][0][\0] If one remove that restriction, the unit comes back: [1][0][0][0][M][\0] The drawback is that it no longer scales "humanly" for numbers >= 1024, going up to 9999 (ugly). I spent a good time trying to figure out a clean and effective solution, but the best I got was to not use humanize_number, and scale the number locally. If that is good enough, I can clean up my code and send a patch. Regards. -- Ricardo Nabinger Sanchez <rnsanchez@{gmail.com,wait4.org}> Powered by FreeBSD "Left to themselves, things tend to go from bad to worse."
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