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-rw-r--r--arch/um/drivers/mconsole_kern.c250
-rw-r--r--arch/um/include/um_mmu.h2
-rw-r--r--arch/um/include/um_uaccess.h15
-rw-r--r--arch/um/kernel/ksyms.c17
4 files changed, 135 insertions, 149 deletions
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 3591c38..5f6dbb1 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -1,43 +1,35 @@
/*
* Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org)
- * Copyright (C) 2001 - 2003 Jeff Dike (jdike@addtoit.com)
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
-#include "linux/kernel.h"
-#include "linux/slab.h"
-#include "linux/init.h"
-#include "linux/notifier.h"
-#include "linux/reboot.h"
-#include "linux/utsname.h"
+#include "linux/console.h"
#include "linux/ctype.h"
#include "linux/interrupt.h"
-#include "linux/sysrq.h"
-#include "linux/workqueue.h"
+#include "linux/list.h"
+#include "linux/mm.h"
#include "linux/module.h"
-#include "linux/file.h"
-#include "linux/fs.h"
-#include "linux/namei.h"
+#include "linux/notifier.h"
+#include "linux/reboot.h"
#include "linux/proc_fs.h"
+#include "linux/slab.h"
#include "linux/syscalls.h"
-#include "linux/list.h"
-#include "linux/mm.h"
-#include "linux/console.h"
-#include "asm/irq.h"
+#include "linux/utsname.h"
+#include "linux/workqueue.h"
#include "asm/uaccess.h"
+#include "init.h"
+#include "irq_kern.h"
+#include "irq_user.h"
#include "kern_util.h"
-#include "kern.h"
#include "mconsole.h"
#include "mconsole_kern.h"
-#include "irq_user.h"
-#include "init.h"
#include "os.h"
-#include "irq_kern.h"
static int do_unlink_socket(struct notifier_block *notifier,
unsigned long what, void *data)
{
- return(mconsole_unlink_socket());
+ return mconsole_unlink_socket();
}
@@ -58,10 +50,9 @@ static void mc_work_proc(struct work_struct *unused)
struct mconsole_entry *req;
unsigned long flags;
- while(!list_empty(&mc_requests)){
+ while (!list_empty(&mc_requests)) {
local_irq_save(flags);
- req = list_entry(mc_requests.next, struct mconsole_entry,
- list);
+ req = list_entry(mc_requests.next, struct mconsole_entry, list);
list_del(&req->list);
local_irq_restore(flags);
req->request.cmd->handler(&req->request);
@@ -79,12 +70,12 @@ static irqreturn_t mconsole_interrupt(int irq, void *dev_id)
static struct mc_request req; /* that's OK */
fd = (long) dev_id;
- while (mconsole_get_request(fd, &req)){
- if(req.cmd->context == MCONSOLE_INTR)
+ while (mconsole_get_request(fd, &req)) {
+ if (req.cmd->context == MCONSOLE_INTR)
(*req.cmd->handler)(&req);
else {
new = kmalloc(sizeof(*new), GFP_NOWAIT);
- if(new == NULL)
+ if (new == NULL)
mconsole_reply(&req, "Out of memory", 1, 0);
else {
new->request = req;
@@ -93,10 +84,10 @@ static irqreturn_t mconsole_interrupt(int irq, void *dev_id)
}
}
}
- if(!list_empty(&mc_requests))
+ if (!list_empty(&mc_requests))
schedule_work(&mconsole_work);
reactivate_fd(fd, MCONSOLE_IRQ);
- return(IRQ_HANDLED);
+ return IRQ_HANDLED;
}
void mconsole_version(struct mc_request *req)
@@ -104,8 +95,8 @@ void mconsole_version(struct mc_request *req)
char version[256];
sprintf(version, "%s %s %s %s %s", utsname()->sysname,
- utsname()->nodename, utsname()->release,
- utsname()->version, utsname()->machine);
+ utsname()->nodename, utsname()->release, utsname()->version,
+ utsname()->machine);
mconsole_reply(req, version, 0, 0);
}
@@ -117,7 +108,7 @@ void mconsole_log(struct mc_request *req)
ptr += strlen("log ");
len = req->len - (ptr - req->request.data);
- printk("%.*s", len, ptr);
+ printk(KERN_WARNING "%.*s", len, ptr);
mconsole_reply(req, "", 0, 0);
}
@@ -136,17 +127,17 @@ void mconsole_proc(struct mc_request *req)
char *ptr = req->request.data, *buf;
ptr += strlen("proc");
- while(isspace(*ptr)) ptr++;
+ while (isspace(*ptr)) ptr++;
proc = get_fs_type("proc");
- if(proc == NULL){
+ if (proc == NULL) {
mconsole_reply(req, "procfs not registered", 1, 0);
goto out;
}
super = (*proc->get_sb)(proc, 0, NULL, NULL);
put_filesystem(proc);
- if(super == NULL){
+ if (super == NULL) {
mconsole_reply(req, "Failed to get procfs superblock", 1, 0);
goto out;
}
@@ -161,29 +152,29 @@ void mconsole_proc(struct mc_request *req)
* if commenting out these two calls + the below read cycle. To
* make UML crash again, it was enough to readd either one.*/
err = link_path_walk(ptr, &nd);
- if(err){
+ if (err) {
mconsole_reply(req, "Failed to look up file", 1, 0);
goto out_kill;
}
file = dentry_open(nd.dentry, nd.mnt, O_RDONLY);
- if(IS_ERR(file)){
+ if (IS_ERR(file)) {
mconsole_reply(req, "Failed to open file", 1, 0);
goto out_kill;
}
/*END*/
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
- if(buf == NULL){
+ if (buf == NULL) {
mconsole_reply(req, "Failed to allocate buffer", 1, 0);
goto out_fput;
}
- if((file->f_op != NULL) && (file->f_op->read != NULL)){
+ if ((file->f_op != NULL) && (file->f_op->read != NULL)) {
do {
n = (*file->f_op->read)(file, buf, PAGE_SIZE - 1,
&file->f_pos);
- if(n >= 0){
+ if (n >= 0) {
buf[n] = '\0';
mconsole_reply(req, buf, 0, (n > 0));
}
@@ -192,7 +183,7 @@ void mconsole_proc(struct mc_request *req)
1, 0);
goto out_free;
}
- } while(n > 0);
+ } while (n > 0);
}
else mconsole_reply(req, "", 0, 0);
@@ -216,18 +207,19 @@ void mconsole_proc(struct mc_request *req)
char *ptr = req->request.data;
ptr += strlen("proc");
- while(isspace(*ptr)) ptr++;
+ while (isspace(*ptr))
+ ptr++;
snprintf(path, sizeof(path), "/proc/%s", ptr);
fd = sys_open(path, 0, 0);
if (fd < 0) {
mconsole_reply(req, "Failed to open file", 1, 0);
- printk("open %s: %d\n",path,fd);
+ printk(KERN_ERR "open %s: %d\n",path,fd);
goto out;
}
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
- if(buf == NULL){
+ if (buf == NULL) {
mconsole_reply(req, "Failed to allocate buffer", 1, 0);
goto out_close;
}
@@ -238,7 +230,7 @@ void mconsole_proc(struct mc_request *req)
mconsole_reply(req, "Read of file failed", 1, 0);
goto out_free;
}
- /*Begin the file content on his own line.*/
+ /* Begin the file content on his own line. */
if (first_chunk) {
mconsole_reply(req, "\n", 0, 1);
first_chunk = 0;
@@ -350,12 +342,12 @@ static struct mc_device *mconsole_find_dev(char *name)
struct list_head *ele;
struct mc_device *dev;
- list_for_each(ele, &mconsole_devices){
+ list_for_each(ele, &mconsole_devices) {
dev = list_entry(ele, struct mc_device, list);
- if(!strncmp(name, dev->name, strlen(dev->name)))
- return(dev);
+ if (!strncmp(name, dev->name, strlen(dev->name)))
+ return dev;
}
- return(NULL);
+ return NULL;
}
#define UNPLUGGED_PER_PAGE \
@@ -377,15 +369,15 @@ static int mem_config(char *str, char **error_out)
int err = -EINVAL, i, add;
char *ret;
- if(str[0] != '='){
+ if (str[0] != '=') {
*error_out = "Expected '=' after 'mem'";
goto out;
}
str++;
- if(str[0] == '-')
+ if (str[0] == '-')
add = 0;
- else if(str[0] == '+'){
+ else if (str[0] == '+') {
add = 1;
}
else {
@@ -395,7 +387,7 @@ static int mem_config(char *str, char **error_out)
str++;
diff = memparse(str, &ret);
- if(*ret != '\0'){
+ if (*ret != '\0') {
*error_out = "Failed to parse memory increment";
goto out;
}
@@ -403,17 +395,17 @@ static int mem_config(char *str, char **error_out)
diff /= PAGE_SIZE;
down(&plug_mem_mutex);
- for(i = 0; i < diff; i++){
+ for (i = 0; i < diff; i++) {
struct unplugged_pages *unplugged;
void *addr;
- if(add){
- if(list_empty(&unplugged_pages))
+ if (add) {
+ if (list_empty(&unplugged_pages))
break;
unplugged = list_entry(unplugged_pages.next,
struct unplugged_pages, list);
- if(unplug_index > 0)
+ if (unplug_index > 0)
addr = unplugged->pages[--unplug_index];
else {
list_del(&unplugged->list);
@@ -428,11 +420,11 @@ static int mem_config(char *str, char **error_out)
struct page *page;
page = alloc_page(GFP_ATOMIC);
- if(page == NULL)
+ if (page == NULL)
break;
unplugged = page_address(page);
- if(unplug_index == UNPLUGGED_PER_PAGE){
+ if (unplug_index == UNPLUGGED_PER_PAGE) {
list_add(&unplugged->list, &unplugged_pages);
unplug_index = 0;
}
@@ -444,9 +436,9 @@ static int mem_config(char *str, char **error_out)
struct unplugged_pages,
list);
err = os_drop_memory(addr, PAGE_SIZE);
- if(err){
- printk("Failed to release memory - "
- "errno = %d\n", err);
+ if (err) {
+ printk(KERN_ERR "Failed to release "
+ "memory - errno = %d\n", err);
*error_out = "Failed to release memory";
goto out_unlock;
}
@@ -500,10 +492,10 @@ static struct mc_device mem_mc = {
static int __init mem_mc_init(void)
{
- if(can_drop_memory())
+ if (can_drop_memory())
mconsole_register_dev(&mem_mc);
- else printk("Can't release memory to the host - memory hotplug won't "
- "be supported\n");
+ else printk(KERN_ERR "Can't release memory to the host - memory "
+ "hotplug won't be supported\n");
return 0;
}
@@ -518,7 +510,7 @@ static void mconsole_get_config(int (*get_config)(char *, char *, int,
char default_buf[CONFIG_BUF_SIZE], *error, *buf;
int n, size;
- if(get_config == NULL){
+ if (get_config == NULL) {
mconsole_reply(req, "No get_config routine defined", 1, 0);
return;
}
@@ -527,30 +519,30 @@ static void mconsole_get_config(int (*get_config)(char *, char *, int,
size = ARRAY_SIZE(default_buf);
buf = default_buf;
- while(1){
+ while (1) {
n = (*get_config)(name, buf, size, &error);
- if(error != NULL){
+ if (error != NULL) {
mconsole_reply(req, error, 1, 0);
goto out;
}
- if(n <= size){
+ if (n <= size) {
mconsole_reply(req, buf, 0, 0);
goto out;
}
- if(buf != default_buf)
+ if (buf != default_buf)
kfree(buf);
size = n;
buf = kmalloc(size, GFP_KERNEL);
- if(buf == NULL){
+ if (buf == NULL) {
mconsole_reply(req, "Failed to allocate buffer", 1, 0);
return;
}
}
out:
- if(buf != default_buf)
+ if (buf != default_buf)
kfree(buf);
}
@@ -561,19 +553,20 @@ void mconsole_config(struct mc_request *req)
int err;
ptr += strlen("config");
- while(isspace(*ptr)) ptr++;
+ while (isspace(*ptr))
+ ptr++;
dev = mconsole_find_dev(ptr);
- if(dev == NULL){
+ if (dev == NULL) {
mconsole_reply(req, "Bad configuration option", 1, 0);
return;
}
name = &ptr[strlen(dev->name)];
ptr = name;
- while((*ptr != '=') && (*ptr != '\0'))
+ while ((*ptr != '=') && (*ptr != '\0'))
ptr++;
- if(*ptr == '='){
+ if (*ptr == '=') {
err = (*dev->config)(name, &error_string);
mconsole_reply(req, error_string, err, 0);
}
@@ -588,9 +581,9 @@ void mconsole_remove(struct mc_request *req)
int err, start, end, n;
ptr += strlen("remove");
- while(isspace(*ptr)) ptr++;
+ while (isspace(*ptr)) ptr++;
dev = mconsole_find_dev(ptr);
- if(dev == NULL){
+ if (dev == NULL) {
mconsole_reply(req, "Bad remove option", 1, 0);
return;
}
@@ -599,11 +592,11 @@ void mconsole_remove(struct mc_request *req)
err = 1;
n = (*dev->id)(&ptr, &start, &end);
- if(n < 0){
+ if (n < 0) {
err_msg = "Couldn't parse device number";
goto out;
}
- else if((n < start) || (n > end)){
+ else if ((n < start) || (n > end)) {
sprintf(error, "Invalid device number - must be between "
"%d and %d", start, end);
err_msg = error;
@@ -612,16 +605,16 @@ void mconsole_remove(struct mc_request *req)
err_msg = NULL;
err = (*dev->remove)(n, &err_msg);
- switch(err){
+ switch(err) {
case 0:
err_msg = "";
break;
case -ENODEV:
- if(err_msg == NULL)
+ if (err_msg == NULL)
err_msg = "Device doesn't exist";
break;
case -EBUSY:
- if(err_msg == NULL)
+ if (err_msg == NULL)
err_msg = "Device is currently open";
break;
default:
@@ -647,19 +640,19 @@ static void console_write(struct console *console, const char *string,
struct list_head *ele;
int n;
- if(list_empty(&clients))
+ if (list_empty(&clients))
return;
- while(1){
+ while (1) {
n = min((size_t) len, ARRAY_SIZE(console_buf) - console_index);
strncpy(&console_buf[console_index], string, n);
console_index += n;
string += n;
len -= n;
- if(len == 0)
+ if (len == 0)
return;
- list_for_each(ele, &clients){
+ list_for_each(ele, &clients) {
struct mconsole_output *entry;
entry = list_entry(ele, struct mconsole_output, list);
@@ -717,12 +710,13 @@ void mconsole_sysrq(struct mc_request *req)
char *ptr = req->request.data;
ptr += strlen("sysrq");
- while(isspace(*ptr)) ptr++;
+ while (isspace(*ptr)) ptr++;
- /* With 'b', the system will shut down without a chance to reply,
+ /*
+ * With 'b', the system will shut down without a chance to reply,
* so in this case, we reply first.
*/
- if(*ptr == 'b')
+ if (*ptr == 'b')
mconsole_reply(req, "", 0, 0);
with_console(req, sysrq_proc, ptr);
@@ -742,7 +736,8 @@ static void stack_proc(void *arg)
switch_to(from, to, from);
}
-/* Mconsole stack trace
+/*
+ * Mconsole stack trace
* Added by Allan Graves, Jeff Dike
* Dumps a stacks registers to the linux console.
* Usage stack <pid>.
@@ -754,17 +749,21 @@ void mconsole_stack(struct mc_request *req)
struct task_struct *from = NULL;
struct task_struct *to = NULL;
- /* Would be nice:
+ /*
+ * Would be nice:
* 1) Send showregs output to mconsole.
* 2) Add a way to stack dump all pids.
*/
ptr += strlen("stack");
- while(isspace(*ptr)) ptr++;
+ while (isspace(*ptr))
+ ptr++;
- /* Should really check for multiple pids or reject bad args here */
+ /*
+ * Should really check for multiple pids or reject bad args here
+ */
/* What do the arguments in mconsole_reply mean? */
- if(sscanf(ptr, "%d", &pid_requested) == 0){
+ if (sscanf(ptr, "%d", &pid_requested) == 0) {
mconsole_reply(req, "Please specify a pid", 1, 0);
return;
}
@@ -772,14 +771,15 @@ void mconsole_stack(struct mc_request *req)
from = current;
to = find_task_by_pid(pid_requested);
- if((to == NULL) || (pid_requested == 0)) {
+ if ((to == NULL) || (pid_requested == 0)) {
mconsole_reply(req, "Couldn't find that pid", 1, 0);
return;
}
with_console(req, stack_proc, to);
}
-/* Changed by mconsole_setup, which is __setup, and called before SMP is
+/*
+ * Changed by mconsole_setup, which is __setup, and called before SMP is
* active.
*/
static char *notify_socket = NULL;
@@ -791,13 +791,14 @@ static int __init mconsole_init(void)
int err;
char file[256];
- if(umid_file_name("mconsole", file, sizeof(file))) return(-1);
+ if (umid_file_name("mconsole", file, sizeof(file)))
+ return -1;
snprintf(mconsole_socket_name, sizeof(file), "%s", file);
sock = os_create_unix_socket(file, sizeof(file), 1);
- if (sock < 0){
- printk("Failed to initialize management console\n");
- return(1);
+ if (sock < 0) {
+ printk(KERN_ERR "Failed to initialize management console\n");
+ return 1;
}
register_reboot_notifier(&reboot_notifier);
@@ -805,14 +806,14 @@ static int __init mconsole_init(void)
err = um_request_irq(MCONSOLE_IRQ, sock, IRQ_READ, mconsole_interrupt,
IRQF_DISABLED | IRQF_SHARED | IRQF_SAMPLE_RANDOM,
"mconsole", (void *)sock);
- if (err){
- printk("Failed to get IRQ for management console\n");
- return(1);
+ if (err) {
+ printk(KERN_ERR "Failed to get IRQ for management console\n");
+ return 1;
}
- if(notify_socket != NULL){
+ if (notify_socket != NULL) {
notify_socket = kstrdup(notify_socket, GFP_KERNEL);
- if(notify_socket != NULL)
+ if (notify_socket != NULL)
mconsole_notify(notify_socket, MCONSOLE_SOCKET,
mconsole_socket_name,
strlen(mconsole_socket_name) + 1);
@@ -820,9 +821,9 @@ static int __init mconsole_init(void)
"string\n");
}
- printk("mconsole (version %d) initialized on %s\n",
+ printk(KERN_INFO "mconsole (version %d) initialized on %s\n",
MCONSOLE_VERSION, mconsole_socket_name);
- return(0);
+ return 0;
}
__initcall(mconsole_init);
@@ -833,10 +834,10 @@ static int write_proc_mconsole(struct file *file, const char __user *buffer,
char *buf;
buf = kmalloc(count + 1, GFP_KERNEL);
- if(buf == NULL)
- return(-ENOMEM);
+ if (buf == NULL)
+ return -ENOMEM;
- if(copy_from_user(buf, buffer, count)){
+ if (copy_from_user(buf, buffer, count)) {
count = -EFAULT;
goto out;
}
@@ -846,24 +847,26 @@ static int write_proc_mconsole(struct file *file, const char __user *buffer,
mconsole_notify(notify_socket, MCONSOLE_USER_NOTIFY, buf, count);
out:
kfree(buf);
- return(count);
+ return count;
}
static int create_proc_mconsole(void)
{
struct proc_dir_entry *ent;
- if(notify_socket == NULL) return(0);
+ if (notify_socket == NULL)
+ return 0;
ent = create_proc_entry("mconsole", S_IFREG | 0200, NULL);
- if(ent == NULL){
- printk(KERN_INFO "create_proc_mconsole : create_proc_entry failed\n");
- return(0);
+ if (ent == NULL) {
+ printk(KERN_INFO "create_proc_mconsole : create_proc_entry "
+ "failed\n");
+ return 0;
}
ent->read_proc = NULL;
ent->write_proc = write_proc_mconsole;
- return(0);
+ return 0;
}
static DEFINE_SPINLOCK(notify_spinlock);
@@ -884,12 +887,12 @@ __initcall(create_proc_mconsole);
static int mconsole_setup(char *str)
{
- if(!strncmp(str, NOTIFY, strlen(NOTIFY))){
+ if (!strncmp(str, NOTIFY, strlen(NOTIFY))) {
str += strlen(NOTIFY);
notify_socket = str;
}
else printk(KERN_ERR "mconsole_setup : Unknown option - '%s'\n", str);
- return(1);
+ return 1;
}
__setup("mconsole", mconsole_setup);
@@ -907,11 +910,12 @@ static int notify_panic(struct notifier_block *self, unsigned long unused1,
{
char *message = ptr;
- if(notify_socket == NULL) return(0);
+ if (notify_socket == NULL)
+ return 0;
mconsole_notify(notify_socket, MCONSOLE_PANIC, message,
strlen(message) + 1);
- return(0);
+ return 0;
}
static struct notifier_block panic_exit_notifier = {
@@ -924,14 +928,14 @@ static int add_notifier(void)
{
atomic_notifier_chain_register(&panic_notifier_list,
&panic_exit_notifier);
- return(0);
+ return 0;
}
__initcall(add_notifier);
char *mconsole_notify_socket(void)
{
- return(notify_socket);
+ return notify_socket;
}
EXPORT_SYMBOL(mconsole_notify_socket);
diff --git a/arch/um/include/um_mmu.h b/arch/um/include/um_mmu.h
index 03bd4b9..668da84 100644
--- a/arch/um/include/um_mmu.h
+++ b/arch/um/include/um_mmu.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
diff --git a/arch/um/include/um_uaccess.h b/arch/um/include/um_uaccess.h
index b1629b1..5ef311a 100644
--- a/arch/um/include/um_uaccess.h
+++ b/arch/um/include/um_uaccess.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
@@ -10,7 +10,7 @@
#define __under_task_size(addr, size) \
(((unsigned long) (addr) < TASK_SIZE) && \
- (((unsigned long) (addr) + (size)) < TASK_SIZE))
+ (((unsigned long) (addr) + (size)) < TASK_SIZE))
#define __access_ok_vsyscall(type, addr, size) \
((type == VERIFY_READ) && \
@@ -90,14 +90,3 @@ extern int clear_user(void __user *mem, int len);
extern int strnlen_user(const void __user *str, int len);
#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 996412c..341234d 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -1,22 +1,15 @@
/*
- * Copyright (C) 2001 - 2004 Jeff Dike (jdike@addtoit.com)
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#include "linux/module.h"
-#include "linux/string.h"
-#include "linux/smp_lock.h"
-#include "linux/spinlock.h"
-#include "linux/highmem.h"
-#include "asm/current.h"
-#include "asm/processor.h"
-#include "asm/unistd.h"
-#include "asm/pgalloc.h"
-#include "asm/pgtable.h"
-#include "asm/page.h"
+#include "linux/syscalls.h"
+#include "asm/a.out.h"
#include "asm/tlbflush.h"
-#include "kern_util.h"
+#include "asm/uaccess.h"
#include "as-layout.h"
+#include "kern_util.h"
#include "mem_user.h"
#include "os.h"
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