|
|
This manual page is part of Xcode Tools version 3.2.2To obtain these tools:
If you are running a version of Xcode Tools other than 3.2.2, view the documentation locally:
Reading manual pagesManual pages are intended as a quick reference for people who already understand a technology.
|
SETREGID(2) BSD System Calls Manual SETREGID(2)
NAME
setregid -- set real and effective group ID
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
setregid(gid_t rgid, gid_t egid);
DESCRIPTION
The real and effective group ID's of the current process are set to the arguments. Unprivileged users
may change the real group ID to the effective group ID and vice-versa; only the super-user may make
other changes.
Supplying a value of -1 for either the real or effective group ID forces the system to substitute the
current ID in place of the -1 parameter.
The setregid() function was intended to allow swapping the real and effective group IDs in set-group-ID
programs to temporarily relinquish the set-group-ID value. This function did not work correctly; its
purpose is now better served by the use of the setegid() function (see setuid(2)).
When setting the real and effective group IDs to the same value, the standard setgid() function is pre-ferred. preferred.
ferred.
RETURN VALUES
The setregid() function returns the value 0 if successful; otherwise the value -1 is returned and the
global variable errno is set to indicate the error.
ERRORS
[EPERM] The current process is not the super-user and a change other than changing the
effective group-id to the real group-id was specified.
SEE ALSO
getgid(2), issetugid(2), setegid(2), setgid(2), setuid(2)
HISTORY
The setregid() system call appeared in 4.2BSD.
BSD April 16, 1994 BSD
|
The way to report a problem with this manual page depends on the type of problem: