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setgroups(2)                BSD System Calls Manual               setgroups(2)


NAME

     setgroups -- set group access list


SYNOPSIS

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

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


DESCRIPTION

     Setgroups() sets the group access list of the current user process
     according to the array gidset.  The parameter ngroups indicates the num-
     ber of entries in the array and must be no more than {NGROUPS_MAX}.

     Only the super-user may set new groups.

     Use of setgroups() is highly discouraged.


RETURN VALUES

     A 0 value is returned on success, -1 on error, with an error code stored
     in errno.


ERRORS

     The setgroups() call will fail if:

     [EINVAL]           The value of ngroups is greater than {NGROUPS_MAX}.

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

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


SEE ALSO

     getgroups(2), initgroups(3)


HISTORY

     The setgroups() function call appeared in 4.2BSD.

4.2 Berkeley Distribution     September 15, 2010     4.2 Berkeley Distribution

Mac OS X 10.9.1 - Generated Mon Jan 6 15:15:27 CST 2014
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