On Mon, 5 Jun 2000 21:39:46 +0200  Manuel Bouyer wrote:

> >     9805 bash     RET   getuid 1859/0x743
> >     9805 bash     CALL  #164 (unimplemented setresuid)
> >     9805 bash     PSIG  SIGSYS SIG_DFL
> >     9805 bash     NAMI  "bash.core"
> 
> Are you root when you're running this ?
> I don't know what setresuid is supposed to do ...

On HP-UX it is a system call that simultaneously sets the real,
effective, and saved user ids:

http://docs.hp.com:80/dynaweb/hpux11/hpuxen1a/rvl3en1a/@Generic__BookTocView/62553/*?DwebQuery=setresuid#X

    "setresuid() sets the real, effective and/or saved user ID of the
     calling process.

    "If the current real, effective or saved user ID is equal to that
     of a user having appropriate privileges, setresuid() sets the
     real, effective and saved user IDs to ruid , euid , and suid ,
     respectively. Otherwise, setresuid() only sets the real,
     effective, and saved user IDs if ruid , euid , and suid each
     match at least one of the current real, effective, or saved user
     IDs.

    "If ruid , euid , or suid is -1, setresuid() leaves the current
     real, effective or saved user ID unchanged."

I imagine the Linux code does the same thing, but I don't have Linux
kernel source around to check.

Regards,

Giles