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RE: RE: My preferred T-shirt size is...

by Anonymous Monk
on Jul 25, 2000 at 16:20 UTC ( #24266=note: print w/replies, xml ) Need Help??


in reply to RE: My preferred T-shirt size is...
in thread My preferred T-shirt size is...

Funny. I'm average height (1.75m), only a bit overweight, and a XL fits rather well. (It's a GNU T-shirt I bought on a 25% discount from Richard Stallman when he was here in Rio. I guess the FSF takes "computer lab guts" into account when making those...) -- Kaufmann
  • Comment on RE: RE: My preferred T-shirt size is...

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[oiskuu]: glibc getlogin just does ttyname() and falls back on getutline(); it's not security related at all. (reminds me of sendmail and remote finger services of the naive early spam era)
[Corion]: But yes, "who started this process" is interesting information :)
[tye]: no, I really believe that "login user" was added as a fundamental bit of info about each process in order to enhance the usefulness of auditing
[Corion]: Ah - if that information is saved in a file, then you could theoretically spam that file and confuse getlogin(). So, don't use it for authentication :)
[tye]: that is what getlogin() certainly *used* to do. I don't believe that is what it certainly should do.
[davido]: /var/run/utmp is 664 i think.
[tye]: Note that my "man getlogin" says that it uses stdin when it should use /dev/tty (calling a glibc bug). But that does not appear to be the case when I test it. But maybe Perl's getlogin() is not using glibc's getlogin().
[oiskuu]: well, run a strace and see what the getlogin does for you.... As I said. SELinux probably has those security labels. But not regular linux.
[tye]: for example, read https://unix. stackexchange.com/ questions/146138/ loginuid-should-be -allowed-to-change -or-not-mutable-or -not
[tye]: I'm not using SELinux and it certainly appears to disagree with you. shrug

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