Dear Perl Gurus,

I have a simple server app that preforks some processes that then wait for connections and serve data based on a given Perl sub.

I was examining the strace output for kicks recently ( the server works fine, no issues ) and noticed these lines along with the accept syscall:

accept(17, {sa_family=AF_INET, sin_port=htons(33604), sin_addr=inet_ad
+dr("192.168.226.139")}, [16]) = 8
ioctl(8, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfffe118) = -1 EINVAL (Inval
+id argument)
_llseek(8, 0, 0xbfffe170, SEEK_CUR)     = -1 ESPIPE (Illegal seek)
ioctl(8, SNDCTL_TMR_TIMEBASE or TCGETS, 0xbfffe118) = -1 EINVAL (Inval
+id argument)
_llseek(8, 0, 0xbfffe170, SEEK_CUR)     = -1 ESPIPE (Illegal seek)

[download]

Yes, they do appear twice. Should I be worried about these? Is there an easy way to fix them? I did some googling and the only thing I could find that sounded remotely feasible was something about mixing buffered and un-buffered IO.

Thanks in advance!

In reply to Strace showing failed ioctl/seek - How to fix? by bennymack

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.