void
vmcmdset_extend(struct exec_vmcmd_set *evsp)
{
struct exec_vmcmd *nvcp;
u_int ocnt;
#ifdef DIAGNOSTIC
if (evsp->evs_used < evsp->evs_cnt)
panic("vmcmdset_extend: not necessary");
#endif
/* figure out number of entries in new set */
if ((ocnt = evsp->evs_cnt) != 0) {
evsp->evs_cnt += ocnt;
VMCMD_EVCNT_INCR(extends);
} else
evsp->evs_cnt = EXEC_DEFAULT_VMCMD_SETSIZE;
/* allocate it */
nvcp = kmem_alloc(evsp->evs_cnt * sizeof(struct exec_vmcmd), KM_SLEEP);
/* free the old struct, if there was one, and record the new one */
if (ocnt) {
memcpy(nvcp, evsp->evs_cmds,
(ocnt * sizeof(struct exec_vmcmd)));
kmem_free(evsp->evs_cmds, ocnt * sizeof(struct exec_vmcmd));
}
evsp->evs_cmds = nvcp;
}
void
kill_vmcmds(struct exec_vmcmd_set *evsp)
{
struct exec_vmcmd *vcp;
u_int i;
VMCMD_EVCNT_INCR(kills);
if (evsp->evs_cnt == 0)
return;
for (i = 0; i < evsp->evs_used; i++) {
vcp = &evsp->evs_cmds[i];
if (vcp->ev_vp != NULL)
vrele(vcp->ev_vp);
}
kmem_free(evsp->evs_cmds, evsp->evs_cnt * sizeof(struct exec_vmcmd));
evsp->evs_used = evsp->evs_cnt = 0;
}
void
new_vmcmd(struct exec_vmcmd_set *evsp,
int (*proc)(struct lwp * l, struct exec_vmcmd *),
u_long len, u_long addr, struct vnode *vp, u_long offset,
u_int prot, int flags)
{
struct exec_vmcmd *vcp;
VMCMD_EVCNT_INCR(calls);
if (evsp->evs_used >= evsp->evs_cnt)
vmcmdset_extend(evsp);
vcp = &evsp->evs_cmds[evsp->evs_used++];
vcp->ev_proc = proc;
vcp->ev_len = len;
vcp->ev_addr = addr;
if ((vcp->ev_vp = vp) != NULL)
vref(vp);
vcp->ev_offset = offset;
vcp->ev_prot = prot;
vcp->ev_flags = flags;
}
void
new_vmcmd(struct exec_vmcmd_set *evsp,
int (*proc)(struct lwp * l, struct exec_vmcmd *),
vsize_t len, vaddr_t addr, struct vnode *vp, u_long offset,
u_int prot, int flags)
{
struct exec_vmcmd *vcp;
VMCMD_EVCNT_INCR(calls);
KASSERT(proc != vmcmd_map_pagedvn || (vp->v_iflag & VI_TEXT));
KASSERT(vp == NULL || vp->v_usecount > 0);
if (evsp->evs_used >= evsp->evs_cnt)
vmcmdset_extend(evsp);
vcp = &evsp->evs_cmds[evsp->evs_used++];
vcp->ev_proc = proc;
vcp->ev_len = len;
vcp->ev_addr = addr;
if ((vcp->ev_vp = vp) != NULL)
vref(vp);
vcp->ev_offset = offset;
vcp->ev_prot = prot;
vcp->ev_flags = flags;
}
