| 162 | } |
| 163 | |
| 164 | int |
| 165 | sys_rfork(struct thread *td, struct rfork_args *uap) |
| 166 | { |
| 167 | struct fork_req fr; |
| 168 | int error, pid; |
| 169 | |
| 170 | /* Don't allow kernel-only flags. */ |
| 171 | if ((uap->flags & RFKERNELONLY) != 0) |
| 172 | return (EINVAL); |
| 173 | /* RFSPAWN must not appear with others */ |
| 174 | if ((uap->flags & RFSPAWN) != 0 && uap->flags != RFSPAWN) |
| 175 | return (EINVAL); |
| 176 | |
| 177 | AUDIT_ARG_FFLAGS(uap->flags); |
| 178 | bzero(&fr, sizeof(fr)); |
| 179 | if ((uap->flags & RFSPAWN) != 0) { |
| 180 | fr.fr_flags = RFFDG | RFPROC | RFPPWAIT | RFMEM; |
| 181 | fr.fr_flags2 = FR2_DROPSIG_CAUGHT; |
| 182 | } else { |
| 183 | fr.fr_flags = uap->flags; |
| 184 | } |
| 185 | fr.fr_pidp = &pid; |
| 186 | error = fork1(td, &fr); |
| 187 | if (error == 0) { |
| 188 | td->td_retval[0] = pid; |
| 189 | td->td_retval[1] = 0; |
| 190 | } |
| 191 | return (error); |
| 192 | } |
| 193 | |
| 194 | int __exclusive_cache_line nprocs = 1; /* process 0 */ |
| 195 | int lastpid = 0; |