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    From
    SubjectRe: Anybody out there? (ETXTBSY)
    Date
    H. Peter Anvin writes the following:
    >
    >Followup to: <19980827023536.C9225@dot.cygnus.com>
    >By author: Richard Henderson <rth@cygnus.com>
    >In newsgroup: linux.dev.kernel
    >>
    >> ETXTBSY is explicitly not set on shared libraries. If you turn
    >> it on, it is impossible to upgrade libc.so.
    >>
    >
    >That shouldn't be; it just means it has to be unlinked before it can
    >be replaced (if you're doing it by hand, mv -f). It has to, anyway,
    >to avoid catastrophic failure of running programs.

    Indeed... If you attempt to upgrade libc.so by doing a "cat newlibc.so >
    /lib/libc.so", then all processes using libc.so are going to die horribly.
    Better hope that cat is statically linked, or else it's probably going to die
    (ironically as a result of its own actions) before having finished. Then you
    have a truncated libc.so, and the real fun begins.

    --
    Alan Curry

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