Re: Setuid function does not work in Linux ?!

From: Average Joe (joe_at_pong.tunestar.net)
Date: 02/19/04

  • Next message: Seth: "Re: Dish 501 DVR file system type?" 
    Date: Thu, 19 Feb 2004 21:53:01 GMT

    On 2004-02-19, Daniel Pope <daniel-po@shaw.ca> wrote:
    > I'm not new in Linux (nor as programmer) but I'm facing this problem:
    > I (badly)neede to make a SUID C program BUT any time when I run the program
    > the setuid (seteuid ent the similar) function does not work at all and I get
    > the runtime message error code(errno=1):
    > "OPERATION NOT PERMITTED".
    > I asked my provider if some default security settings on my Linux system
    > prevents it from working properly but he doesn't know.
    > Any hint would be greatly appreciated.
    > Thank you in advance!

    Are you running the program as 'nobody' (or equivelant userID of 65535?)

    Some systems will not allow you to setuid on that magic number. A way to
    check is run it as another user and see if that does it. If so, you'll
    probably need to tweak the web server and/or your userID for 'nobody'
    to avoid that number.

    (I had a similiar problem awhile back and couldn't figure it out, someone
    from the perl crowd helped me.)

    Jamie

  • Next message: Seth: "Re: Dish 501 DVR file system type?"

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