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    SubjectRe: [PATCH] Support single byte reads from integers published in procfs by kernel/sysctl.c
    Date (Eric W. Biederman) writes:

    >> [ I also note that the patch allows multiple short reads (not necessarily
    >> just a single byte at a time) from these entries in procfs. ]
    >> I think there is a reasonable userspace expectation that entities
    >> that present themselves as text files to produce results that are
    >> consistent with the userspace model of a text file.
    >> For a more concrete example, consider the following BusyBox ash(1) code:
    >> read X < /proc/sys/kernel/threads-max
    >> Y=$(cat /proc/sys/kernel/threads-max)
    >> read A < /proc/sys/kernel/core_pattern
    >> B=$(cat /proc/sys/kernel/core_pattern)
    >> The fact that these yield different results is surprising given that
    >> the user sees these as text files.

    To be precise /proc/sys/kernel/threads-max does not present itself as
    an ordinary text file. It reports that it's file length is 0 bytes
    long. That is different from an ordinary text file.


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      Last update: 2012-01-23 17:43    [W:0.022 / U:12.312 seconds]
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