setgroups(2) - NetBSD Manual Pages

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SETGROUPS(2)              NetBSD Programmer's 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 ac-
     cording to the array gidset. The parameter ngroups indicates the number
     of entries in the array and must be no more than {NGROUPS_MAX}.

     Only the super-user may set new groups.


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 ad-
                   dress space.


SEE ALSO

     getgroups(2),  initgroups(3)


HISTORY

     The setgroups() function call appeared in 4.2BSD.

4.2 Berkeley Distribution       April 16, 1994                               1