subr_uio.c (d241a0e67ff3a44947931bf8c841d9786c59efd7) subr_uio.c (89f6b8632cc94bca2738b4fcc26e1189ef4f5dde)
1/*-
2 * Copyright (c) 1982, 1986, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

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40#include "opt_zero.h"
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/limits.h>
46#include <sys/lock.h>
47#include <sys/mman.h>
1/*-
2 * Copyright (c) 1982, 1986, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

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40#include "opt_zero.h"
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/limits.h>
46#include <sys/lock.h>
47#include <sys/mman.h>
48#include <sys/mutex.h>
49#include <sys/proc.h>
50#include <sys/resourcevar.h>
48#include <sys/proc.h>
49#include <sys/resourcevar.h>
50#include <sys/rwlock.h>
51#include <sys/sched.h>
52#include <sys/sysctl.h>
53#include <sys/vnode.h>
54
55#include <vm/vm.h>
56#include <vm/vm_param.h>
57#include <vm/vm_extern.h>
58#include <vm/vm_page.h>

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99 KASSERT(kern_pg->queue == PQ_NONE && kern_pg->wire_count == 1,
100 ("vm_pgmoveco: kern_pg is not correctly wired"));
101
102 if ((vm_map_lookup(&map, uaddr,
103 VM_PROT_WRITE, &entry, &uobject,
104 &upindex, &prot, &wired)) != KERN_SUCCESS) {
105 return(EFAULT);
106 }
51#include <sys/sched.h>
52#include <sys/sysctl.h>
53#include <sys/vnode.h>
54
55#include <vm/vm.h>
56#include <vm/vm_param.h>
57#include <vm/vm_extern.h>
58#include <vm/vm_page.h>

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99 KASSERT(kern_pg->queue == PQ_NONE && kern_pg->wire_count == 1,
100 ("vm_pgmoveco: kern_pg is not correctly wired"));
101
102 if ((vm_map_lookup(&map, uaddr,
103 VM_PROT_WRITE, &entry, &uobject,
104 &upindex, &prot, &wired)) != KERN_SUCCESS) {
105 return(EFAULT);
106 }
107 VM_OBJECT_LOCK(uobject);
107 VM_OBJECT_WLOCK(uobject);
108retry:
109 if ((user_pg = vm_page_lookup(uobject, upindex)) != NULL) {
110 if (vm_page_sleep_if_busy(user_pg, TRUE, "vm_pgmoveco"))
111 goto retry;
112 vm_page_lock(user_pg);
113 pmap_remove_all(user_pg);
114 vm_page_free(user_pg);
115 vm_page_unlock(user_pg);
116 } else {
117 /*
118 * Even if a physical page does not exist in the
119 * object chain's first object, a physical page from a
120 * backing object may be mapped read only.
121 */
122 if (uobject->backing_object != NULL)
123 pmap_remove(map->pmap, uaddr, uaddr + PAGE_SIZE);
124 }
125 vm_page_insert(kern_pg, uobject, upindex);
126 vm_page_dirty(kern_pg);
108retry:
109 if ((user_pg = vm_page_lookup(uobject, upindex)) != NULL) {
110 if (vm_page_sleep_if_busy(user_pg, TRUE, "vm_pgmoveco"))
111 goto retry;
112 vm_page_lock(user_pg);
113 pmap_remove_all(user_pg);
114 vm_page_free(user_pg);
115 vm_page_unlock(user_pg);
116 } else {
117 /*
118 * Even if a physical page does not exist in the
119 * object chain's first object, a physical page from a
120 * backing object may be mapped read only.
121 */
122 if (uobject->backing_object != NULL)
123 pmap_remove(map->pmap, uaddr, uaddr + PAGE_SIZE);
124 }
125 vm_page_insert(kern_pg, uobject, upindex);
126 vm_page_dirty(kern_pg);
127 VM_OBJECT_UNLOCK(uobject);
127 VM_OBJECT_WUNLOCK(uobject);
128 vm_map_lookup_done(map, entry);
129 return(KERN_SUCCESS);
130}
131#endif /* SOCKET_SEND_COW */
132
133int
134copyin_nofault(const void *udaddr, void *kaddr, size_t len)
135{

--- 470 unchanged lines hidden --- 		128 vm_map_lookup_done(map, entry);
129 return(KERN_SUCCESS);
130}
131#endif /* SOCKET_SEND_COW */
132
133int
134copyin_nofault(const void *udaddr, void *kaddr, size_t len)
135{

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