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Implement mincore system call.

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This commit is contained in:
John Dyson 1995-10-21 17:42:28 +00:00
parent 2de56abd58
commit 02c04a2f6c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=11621
1 changed files with 25 additions and 3 deletions
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28
sys/vm/vm_mmap.c
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@ -38,7 +38,7 @@
* from: Utah $Hdr: vm_mmap.c 1.6 91/10/21$
*
* @(#)vm_mmap.c 8.4 (Berkeley) 1/12/94
* $Id: vm_mmap.c,v 1.25 1995/07/09 06:58:01 davidg Exp $
* $Id: vm_mmap.c,v 1.26 1995/07/13 08:48:31 davidg Exp $
*/
/*
@ -468,9 +468,31 @@ mincore(p, uap, retval)
struct mincore_args *uap;
int *retval;
{
vm_offset_t addr;
vm_offset_t end;
char *vec;
/* Not yet implemented */
return (EOPNOTSUPP);
addr = trunc_page((vm_offset_t) uap->addr);
end = addr + round_page((vm_size_t) uap->len);
if (VM_MAXUSER_ADDRESS > 0 && end > VM_MAXUSER_ADDRESS)
return (EINVAL);
if (end < addr)
return (EINVAL);
vec = uap->vec;
while(addr < end) {
int error;
if (pmap_extract(&p->p_vmspace->vm_pmap, addr)) {
error = subyte( vec, 1);
} else {
error = subyte( vec, 0);
}
if (error)
return EFAULT;
vec++;
addr += PAGE_SIZE;
}
return (0);
}
struct mlock_args {