NAME

       setgroups — set group access list

LIBRARY

       Standard C Library (libc, -lc)

SYNOPSIS

       #include <sys/param.h>
       #include <unistd.h>

       int
       setgroups(int ngroups, const gid_t *gidset);

DESCRIPTION

       The setgroups() system call sets the group access list of the current user process according to the array
       gidset.   The  ngroups  argument  indicates  the  number of entries in the array and must be no more than
       {NGROUPS_MAX}+1.

       Only the super-user may set a new group list.

RETURN VALUES

       The setgroups() 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

       The setgroups() system call will fail if:

       [EPERM]            The caller is not the super-user.

       [EINVAL]           The number specified in the ngroups argument is larger than the {NGROUPS_MAX}+1 limit.

       [EFAULT]           The address specified for gidset is outside the process address space.

SEE ALSO

       getgroups(2), initgroups(3)

HISTORY

       The setgroups() system call appeared in 4.2BSD.

Debian                                           April 16, 1994                                     SETGROUPS(2)