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NAME

     cr_seeothergids — determine visibility of objects given their group memberships

SYNOPSIS

     int
     cr_seeothergids(struct ucred *u1, struct ucred *u2);

DESCRIPTION

     This function determines the visibility of objects in the kernel based on the group IDs in
     the credentials u1 and u2 associated with them.

     The visibility of objects is influenced by the sysctl(8) variable
     security.bsd.see_other_gids.  If this variable is non-zero then all objects in the kernel
     are visible to each other irrespective of their group membership.  If this variable is zero
     then the object with credentials u2 is visible to the object with credentials u1 if either
     u1 is the super-user credential, or if at least one of u1's group IDs is present in u2's
     group set.

SYSCTL VARIABLES

     security.bsd.see_other_gids
             Must be non-zero if objects with unprivileged credentials are to be able to see each
             other.

RETURN VALUES

     This function returns zero if the object with credential u1 can “see” the object with
     credential u2, or ESRCH otherwise.

SEE ALSO

     cr_seeotheruids(9), p_candebug(9)