- rip = u.u_procp;
-#if defined(tahoe)
- rpp->p_ckey = rip->p_ckey;
- rpp->p_dkey = 0;
-#endif
- rpp->p_stat = SIDL;
- timerclear(&rpp->p_realtimer.it_value);
- rpp->p_flag = SLOAD | (rip->p_flag & (SPAGV|SCTTY|SHPUX));
- if (isvfork) {
- rpp->p_flag |= SVFORK;
- rpp->p_ndx = rip->p_ndx;
- } else
- rpp->p_ndx = rpp - proc;
- bcopy(rip->p_comm, rpp->p_comm, MAXCOMLEN+1);
- bcopy(rip->p_logname, rpp->p_logname, MAXLOGNAME);
- rpp->p_uid = rip->p_uid;
- rpp->p_ruid = rip->p_ruid;
- rpp->p_rgid = rip->p_rgid;
- rpp->p_pgrp = rip->p_pgrp;
- rpp->p_pgrpnxt = rip->p_pgrpnxt;
- rip->p_pgrpnxt = rpp;
- rpp->p_nice = rip->p_nice;
- rpp->p_textp = isvfork ? 0 : rip->p_textp;
- rpp->p_pid = mpid;
- rpp->p_ppid = rip->p_pid;
- rpp->p_pptr = rip;
- rpp->p_osptr = rip->p_cptr;
- if (rip->p_cptr)
- rip->p_cptr->p_ysptr = rpp;
- rpp->p_ysptr = NULL;
- rpp->p_cptr = NULL;
- rip->p_cptr = rpp;
- rpp->p_time = 0;
- bzero((caddr_t)&rpp->p_utime, sizeof (struct timeval));
- bzero((caddr_t)&rpp->p_stime, sizeof (struct timeval));
- rpp->p_cpu = 0;
- rpp->p_sigmask = rip->p_sigmask;
- rpp->p_sigcatch = rip->p_sigcatch;
- rpp->p_sigignore = rip->p_sigignore;
- /* take along any pending signals like stops? */
- if (isvfork) {
- rpp->p_tsize = rpp->p_dsize = rpp->p_mmsize = rpp->p_ssize = 0;
- rpp->p_szpt = clrnd(ctopt(HIGHPAGES));
- forkstat.cntvfork++;
- forkstat.sizvfork += rip->p_dsize + rip->p_ssize;
- } else {
- rpp->p_tsize = rip->p_tsize;
- rpp->p_dsize = rip->p_dsize;
- rpp->p_mmsize = rip->p_mmsize;
- rpp->p_ssize = rip->p_ssize;
- rpp->p_szpt = rip->p_szpt;
- forkstat.cntfork++;
- forkstat.sizfork += rip->p_dsize + rip->p_ssize;
- }
-#ifdef KTRACE
- if (rip->p_traceflag&KTRFAC_INHERIT) {
- rpp->p_traceflag = rip->p_traceflag;
- if ((rpp->p_tracep = rip->p_tracep) != NULL)
- VREF(rpp->p_tracep);
- } else {
- rpp->p_tracep = NULL;
- rpp->p_traceflag = 0;
+ bzero(&p2->p_startzero,
+ (unsigned) ((caddr_t)&p2->p_endzero - (caddr_t)&p2->p_startzero));
+ bcopy(&p1->p_startcopy, &p2->p_startcopy,
+ (unsigned) ((caddr_t)&p2->p_endcopy - (caddr_t)&p2->p_startcopy));
+ p2->p_spare[0] = 0; /* XXX - should be in zero range */
+ p2->p_spare[1] = 0; /* XXX - should be in zero range */
+ p2->p_spare[2] = 0; /* XXX - should be in zero range */
+ p2->p_spare[3] = 0; /* XXX - should be in zero range */
+
+ /*
+ * Duplicate sub-structures as needed.
+ * Increase reference counts on shared objects.
+ * The p_stats and p_sigacts substructs are set in vm_fork.
+ */
+ MALLOC(p2->p_cred, struct pcred *, sizeof(struct pcred),
+ M_SUBPROC, M_WAITOK);
+ bcopy(p1->p_cred, p2->p_cred, sizeof(*p2->p_cred));
+ p2->p_cred->p_refcnt = 1;
+ crhold(p1->p_ucred);
+
+ p2->p_fd = fdcopy(p1);
+ /*
+ * If p_limit is still copy-on-write, bump refcnt,
+ * otherwise get a copy that won't be modified.
+ * (If PL_SHAREMOD is clear, the structure is shared
+ * copy-on-write.)
+ */
+ if (p1->p_limit->p_lflags & PL_SHAREMOD)
+ p2->p_limit = limcopy(p1->p_limit);
+ else {
+ p2->p_limit = p1->p_limit;
+ p2->p_limit->p_refcnt++;