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| author | John Dyson <dyson@FreeBSD.org> | 1995-10-21 17:42:28 +0000 |
|---|---|---|
| committer | John Dyson <dyson@FreeBSD.org> | 1995-10-21 17:42:28 +0000 |
| commit | 02c04a2f6c83ee28ed637d120296d04da8f03372 (patch) | |
| tree | 509256e2d1d12e5f15ad0021e1b5528db6a106f1 | |
| parent | 2de56abd58d00c2e89ed19b4191744290b24c54a (diff) | |
| download | src-02c04a2f6c83ee28ed637d120296d04da8f03372.tar.gz src-02c04a2f6c83ee28ed637d120296d04da8f03372.zip | |
Implement mincore system call.
Notes
Notes:
svn path=/head/; revision=11621
| -rw-r--r-- | sys/vm/vm_mmap.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/sys/vm/vm_mmap.c b/sys/vm/vm_mmap.c index 3beba3cbcbc1..fb955fe44f5b 100644 --- a/sys/vm/vm_mmap.c +++ b/sys/vm/vm_mmap.c @@ -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 { |