View Source: setresuid(2) - Waikato Linux Users Group

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SETRESUID
!!!SETRESUID
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
SEE ALSO
----
!!NAME


setresuid, setresgid - set real, effective and saved user or group ID
!!SYNOPSIS


__#include __


__int setresuid(uid_t__ ''ruid''__, uid_t__
''euid''__, uid_t__ ''suid''__);
int setresgid(gid_t__ ''rgid''__, gid_t__
''egid''__, gid_t__ ''sgid''__);__
!!DESCRIPTION


__setresuid__ (introduced in Linux 2.1.44) sets the real
user ID, the effective user ID, and the saved set-user-ID of
the current process.


Unprivileged user processes (i.e., processes with each of
real, effective and saved user ID nonzero) may change the
real, effective and saved user ID, each to one of: the
current uid, the current effective uid or the current saved
uid.


The super-user may set real, effective and saved user ID to
arbitrary values.


If one of the parameters equals -1, the corresponding value
is not changed.


Completely analogously, __setresgid__ sets the real,
effective and saved group ID's of the current process, with
the same restrictions for processes with each of real,
effective and saved user ID nonzero.
!!RETURN VALUE


On success, zero is returned. On error, -1 is returned, and
''errno'' is set appropriately.
!!ERRORS


__EPERM__


The current process was not privileged and tried to change
the IDs is a not allowed way.
!!CONFORMING TO


This call is Linux-specific.
!!SEE ALSO


getuid(2), setuid(2), getreuid(2),
setreuid(2), getresuid(2)
----

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Last edited on Tuesday, June 4, 2002 12:23:46 am by "perry"

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