Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

make RANGE_TEST a function.

This commit is contained in:
yamt 2007-09-23 16:05:40 +00:00
parent 97427fb0e4
commit d71c563a36
1 changed files with 42 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
sys/uvm/uvm_mmap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: uvm_mmap.c,v 1.114 2007/07/27 08:26:38 pooka Exp $ */
/* $NetBSD: uvm_mmap.c,v 1.115 2007/09/23 16:05:40 yamt Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -51,7 +51,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_mmap.c,v 1.114 2007/07/27 08:26:38 pooka Exp $");
__KERNEL_RCSID(0, "$NetBSD: uvm_mmap.c,v 1.115 2007/09/23 16:05:40 yamt Exp $");
#include "opt_compat_netbsd.h"
#include "opt_pax.h"
@ -89,21 +89,21 @@ __KERNEL_RCSID(0, "$NetBSD: uvm_mmap.c,v 1.114 2007/07/27 08:26:38 pooka Exp $")
#define COMPAT_ZERODEV(dev) (0)
#endif
#define RANGE_TEST(addr, size, ismmap) \
do { \
vaddr_t vm_min_address = VM_MIN_ADDRESS; \
vaddr_t vm_max_address = VM_MAXUSER_ADDRESS; \
vaddr_t eaddr = addr + size; \
\
if (addr < vm_min_address) \
return EINVAL; \
if (eaddr > vm_max_address) \
return /*CONSTCOND*/ \
ismmap ? EFBIG : EINVAL; \
if (addr > eaddr) /* no wrapping! */ \
return /*CONSTCOND*/ \
ismmap ? EOVERFLOW : EINVAL; \
} while (/*CONSTCOND*/0)
static int
range_test(vaddr_t addr, vsize_t size, bool ismmap)
{
vaddr_t vm_min_address = VM_MIN_ADDRESS;
vaddr_t vm_max_address = VM_MAXUSER_ADDRESS;
vaddr_t eaddr = addr + size;
if (addr < vm_min_address)
return EINVAL;
if (eaddr > vm_max_address)
return ismmap ? EFBIG : EINVAL;
if (addr > eaddr) /* no wrapping! */
return ismmap ? EOVERFLOW : EINVAL;
return 0;
}
/*
* unimplemented VM system calls:
@ -359,8 +359,9 @@ sys_mmap(l, v, retval)
if (addr & PAGE_MASK)
return (EINVAL);
RANGE_TEST(addr, size, 1);
error = range_test(addr, size, true);
if (error)
return error;
} else if (addr == 0 || !(flags & MAP_TRYFIXED)) {
/*
@ -595,7 +596,9 @@ sys___msync13(struct lwp *l, void *v, register_t *retval)
size += pageoff;
size = (vsize_t)round_page(size);
RANGE_TEST(addr, size, 0);
error = range_test(addr, size, false);
if (error)
return error;
/*
* get map
@ -658,6 +661,7 @@ sys_munmap(struct lwp *l, void *v, register_t *retval)
vsize_t size, pageoff;
struct vm_map *map;
struct vm_map_entry *dead_entries;
int error;
/*
* get syscall args.
@ -678,7 +682,9 @@ sys_munmap(struct lwp *l, void *v, register_t *retval)
if (size == 0)
return (0);
RANGE_TEST(addr, size, 0);
error = range_test(addr, size, false);
if (error)
return error;
map = &p->p_vmspace->vm_map;
@ -736,7 +742,9 @@ sys_mprotect(struct lwp *l, void *v, register_t *retval)
size += pageoff;
size = round_page(size);
RANGE_TEST(addr, size, 0);
error = range_test(addr, size, false);
if (error)
return error;
error = uvm_map_protect(&p->p_vmspace->vm_map, addr, addr + size, prot,
false);
@ -774,7 +782,9 @@ sys_minherit(struct lwp *l, void *v, register_t *retval)
size += pageoff;
size = (vsize_t)round_page(size);
RANGE_TEST(addr, size, 0);
error = range_test(addr, size, false);
if (error)
return error;
error = uvm_map_inherit(&p->p_vmspace->vm_map, addr, addr + size,
inherit);
@ -812,7 +822,9 @@ sys_madvise(struct lwp *l, void *v, register_t *retval)
size += pageoff;
size = (vsize_t)round_page(size);
RANGE_TEST(addr, size, 0);
error = range_test(addr, size, false);
if (error)
return error;
switch (advice) {
case MADV_NORMAL:
@ -914,7 +926,9 @@ sys_mlock(struct lwp *l, void *v, register_t *retval)
size += pageoff;
size = (vsize_t)round_page(size);
RANGE_TEST(addr, size, 0);
error = range_test(addr, size, false);
if (error)
return error;
if (atop(size) + uvmexp.wired > uvmexp.wiredmax)
return (EAGAIN);
@ -962,7 +976,9 @@ sys_munlock(struct lwp *l, void *v, register_t *retval)
size += pageoff;
size = (vsize_t)round_page(size);
RANGE_TEST(addr, size, 0);
error = range_test(addr, size, false);
if (error)
return error;
error = uvm_map_pageable(&p->p_vmspace->vm_map, addr, addr+size, true,
0);