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authorDavid Woodhouse <dwmw2@shinybook.infradead.org>2005-06-02 16:39:11 +0100
committerDavid Woodhouse <dwmw2@shinybook.infradead.org>2005-06-02 16:39:11 +0100
commit1c3f45ab2f7f879ea482501c83899505c31f7539 (patch)
tree672465b3b9b3e2e26a8caf74ed64aa6885c52c13 /arch/um
parent4bcff1b37e7c3aed914d1ce5b45994adc7dbf455 (diff)
parente0d6d71440a3a35c6fc2dde09f8e8d4d7bd44dda (diff)
Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/Kconfig.debug4
-rw-r--r--arch/um/Kconfig_x86_644
-rw-r--r--arch/um/drivers/chan_kern.c22
-rw-r--r--arch/um/drivers/mcast_kern.c4
-rw-r--r--arch/um/drivers/mcast_user.c47
-rw-r--r--arch/um/drivers/random.c16
-rw-r--r--arch/um/drivers/ssl.c1
-rw-r--r--arch/um/drivers/stdio_console.c1
-rw-r--r--arch/um/drivers/ubd_kern.c303
-rw-r--r--arch/um/include/2_5compat.h24
-rw-r--r--arch/um/include/sysdep-i386/ptrace.h2
-rw-r--r--arch/um/include/sysdep-x86_64/checksum.h26
-rw-r--r--arch/um/include/sysdep-x86_64/ptrace.h62
-rw-r--r--arch/um/include/sysrq.h3
-rw-r--r--arch/um/kernel/Makefile2
-rw-r--r--arch/um/kernel/checksum.c0
-rw-r--r--arch/um/kernel/exec_kern.c1
-rw-r--r--arch/um/kernel/initrd.c (renamed from arch/um/kernel/initrd_kern.c)21
-rw-r--r--arch/um/kernel/initrd_user.c46
-rw-r--r--arch/um/kernel/ksyms.c1
-rw-r--r--arch/um/kernel/main.c40
-rw-r--r--arch/um/kernel/mem.c40
-rw-r--r--arch/um/kernel/process_kern.c36
-rw-r--r--arch/um/kernel/ptrace.c25
-rw-r--r--arch/um/kernel/sysrq.c21
-rw-r--r--arch/um/kernel/trap_kern.c37
-rw-r--r--arch/um/kernel/tt/ksyms.c1
-rw-r--r--arch/um/kernel/tt/process_kern.c8
-rw-r--r--arch/um/kernel/um_arch.c6
-rw-r--r--arch/um/kernel/uml.lds.S2
-rw-r--r--arch/um/sys-i386/Makefile4
-rw-r--r--arch/um/sys-i386/delay.c16
-rw-r--r--arch/um/sys-i386/sysrq.c80
-rw-r--r--arch/um/sys-ppc/sysrq.c14
-rw-r--r--arch/um/sys-x86_64/Makefile6
-rw-r--r--arch/um/sys-x86_64/delay.c33
-rw-r--r--arch/um/sys-x86_64/ksyms.c3
-rw-r--r--arch/um/sys-x86_64/ptrace.c9
-rw-r--r--arch/um/sys-x86_64/syscalls.c17
-rw-r--r--arch/um/sys-x86_64/sysrq.c11
-rw-r--r--arch/um/sys-x86_64/user-offsets.c8
41 files changed, 330 insertions, 677 deletions
diff --git a/arch/um/Kconfig.debug b/arch/um/Kconfig.debug
index b89989de364..bd41e4286d0 100644
--- a/arch/um/Kconfig.debug
+++ b/arch/um/Kconfig.debug
@@ -2,10 +2,6 @@ menu "Kernel hacking"
source "lib/Kconfig.debug"
-config FRAME_POINTER
- bool
- default y if DEBUG_INFO
-
config PT_PROXY
bool "Enable ptrace proxy"
depends on XTERM_CHAN && DEBUG_INFO && MODE_TT
diff --git a/arch/um/Kconfig_x86_64 b/arch/um/Kconfig_x86_64
index fd8d7e8982b..f162f50f0b1 100644
--- a/arch/um/Kconfig_x86_64
+++ b/arch/um/Kconfig_x86_64
@@ -6,6 +6,10 @@ config 64BIT
bool
default y
+config TOP_ADDR
+ hex
+ default 0x80000000
+
config 3_LEVEL_PGTABLES
bool
default y
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 0150038af79..14a12d6b3df 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -20,9 +20,17 @@
#include "os.h"
#ifdef CONFIG_NOCONFIG_CHAN
+
+/* The printk's here are wrong because we are complaining that there is no
+ * output device, but printk is printing to that output device. The user will
+ * never see the error. printf would be better, except it can't run on a
+ * kernel stack because it will overflow it.
+ * Use printk for now since that will avoid crashing.
+ */
+
static void *not_configged_init(char *str, int device, struct chan_opts *opts)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(NULL);
}
@@ -30,27 +38,27 @@ static void *not_configged_init(char *str, int device, struct chan_opts *opts)
static int not_configged_open(int input, int output, int primary, void *data,
char **dev_out)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-ENODEV);
}
static void not_configged_close(int fd, void *data)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
}
static int not_configged_read(int fd, char *c_out, void *data)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-EIO);
}
static int not_configged_write(int fd, const char *buf, int len, void *data)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-EIO);
}
@@ -58,7 +66,7 @@ static int not_configged_write(int fd, const char *buf, int len, void *data)
static int not_configged_console_write(int fd, const char *buf, int len,
void *data)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-EIO);
}
@@ -66,7 +74,7 @@ static int not_configged_console_write(int fd, const char *buf, int len,
static int not_configged_window_size(int fd, void *data, unsigned short *rows,
unsigned short *cols)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-ENODEV);
}
diff --git a/arch/um/drivers/mcast_kern.c b/arch/um/drivers/mcast_kern.c
index faf714e87b5..217438cdef3 100644
--- a/arch/um/drivers/mcast_kern.c
+++ b/arch/um/drivers/mcast_kern.c
@@ -73,7 +73,6 @@ int mcast_setup(char *str, char **mac_out, void *data)
struct mcast_init *init = data;
char *port_str = NULL, *ttl_str = NULL, *remain;
char *last;
- int n;
*init = ((struct mcast_init)
{ .addr = "239.192.168.1",
@@ -89,13 +88,12 @@ int mcast_setup(char *str, char **mac_out, void *data)
}
if(port_str != NULL){
- n = simple_strtoul(port_str, &last, 10);
+ init->port = simple_strtoul(port_str, &last, 10);
if((*last != '\0') || (last == port_str)){
printk(KERN_ERR "mcast_setup - Bad port : '%s'\n",
port_str);
return(0);
}
- init->port = htons(n);
}
if(ttl_str != NULL){
diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c
index 0fe1d9fa913..7a0d115b29d 100644
--- a/arch/um/drivers/mcast_user.c
+++ b/arch/um/drivers/mcast_user.c
@@ -38,7 +38,7 @@ static struct sockaddr_in *new_addr(char *addr, unsigned short port)
}
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = in_aton(addr);
- sin->sin_port = port;
+ sin->sin_port = htons(port);
return(sin);
}
@@ -55,28 +55,25 @@ static int mcast_open(void *data)
struct mcast_data *pri = data;
struct sockaddr_in *sin = pri->mcast_addr;
struct ip_mreq mreq;
- int fd, yes = 1;
+ int fd = -EINVAL, yes = 1, err = -EINVAL;;
- if ((sin->sin_addr.s_addr == 0) || (sin->sin_port == 0)) {
- fd = -EINVAL;
+ if ((sin->sin_addr.s_addr == 0) || (sin->sin_port == 0))
goto out;
- }
fd = socket(AF_INET, SOCK_DGRAM, 0);
+
if (fd < 0){
printk("mcast_open : data socket failed, errno = %d\n",
errno);
- fd = -ENOMEM;
+ fd = -errno;
goto out;
}
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) {
printk("mcast_open: SO_REUSEADDR failed, errno = %d\n",
errno);
- os_close_file(fd);
- fd = -EINVAL;
- goto out;
+ goto out_close;
}
/* set ttl according to config */
@@ -84,26 +81,20 @@ static int mcast_open(void *data)
sizeof(pri->ttl)) < 0) {
printk("mcast_open: IP_MULTICAST_TTL failed, error = %d\n",
errno);
- os_close_file(fd);
- fd = -EINVAL;
- goto out;
+ goto out_close;
}
/* set LOOP, so data does get fed back to local sockets */
if (setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
printk("mcast_open: IP_MULTICAST_LOOP failed, error = %d\n",
errno);
- os_close_file(fd);
- fd = -EINVAL;
- goto out;
+ goto out_close;
}
/* bind socket to mcast address */
if (bind(fd, (struct sockaddr *) sin, sizeof(*sin)) < 0) {
printk("mcast_open : data bind failed, errno = %d\n", errno);
- os_close_file(fd);
- fd = -EINVAL;
- goto out;
+ goto out_close;
}
/* subscribe to the multicast group */
@@ -117,12 +108,15 @@ static int mcast_open(void *data)
"interface on the host.\n");
printk("eth0 should be configured in order to use the "
"multicast transport.\n");
- os_close_file(fd);
- fd = -EINVAL;
+ goto out_close;
}
out:
- return(fd);
+ return fd;
+
+ out_close:
+ os_close_file(fd);
+ return err;
}
static void mcast_close(int fd, void *data)
@@ -164,14 +158,3 @@ struct net_user_info mcast_user_info = {
.delete_address = NULL,
.max_packet = MAX_PACKET - ETH_HEADER_OTHER
};
-
-/*
- * 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/drivers/random.c b/arch/um/drivers/random.c
index d43e9fab05a..f9e22198e01 100644
--- a/arch/um/drivers/random.c
+++ b/arch/um/drivers/random.c
@@ -1,5 +1,10 @@
-/* Much of this ripped from hw_random.c */
-
+/* Copyright (C) 2005 Jeff Dike <jdike@addtoit.com> */
+/* Much of this ripped from drivers/char/hw_random.c, see there for other
+ * copyright.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/miscdevice.h>
@@ -12,8 +17,6 @@
*/
#define RNG_VERSION "1.0.0"
#define RNG_MODULE_NAME "random"
-#define RNG_DRIVER_NAME RNG_MODULE_NAME " virtual driver " RNG_VERSION
-#define PFX RNG_MODULE_NAME ": "
#define RNG_MISCDEV_MINOR 183 /* official */
@@ -98,7 +101,7 @@ static int __init rng_init (void)
err = misc_register (&rng_miscdev);
if (err) {
- printk (KERN_ERR PFX "misc device register failed\n");
+ printk (KERN_ERR RNG_MODULE_NAME ": misc device register failed\n");
goto err_out_cleanup_hw;
}
@@ -120,3 +123,6 @@ static void __exit rng_cleanup (void)
module_init (rng_init);
module_exit (rng_cleanup);
+
+MODULE_DESCRIPTION("UML Host Random Number Generator (RNG) driver");
+MODULE_LICENSE("GPL");
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index a2bac429f3d..b32a77010fb 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -22,7 +22,6 @@
#include "init.h"
#include "irq_user.h"
#include "mconsole_kern.h"
-#include "2_5compat.h"
static int ssl_version = 1;
diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index 361d0be342b..afbe1e71ed8 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -28,7 +28,6 @@
#include "irq_user.h"
#include "mconsole_kern.h"
#include "init.h"
-#include "2_5compat.h"
#define MAX_TTYS (16)
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 9a56ff94308..2a7f6892c55 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -49,13 +49,12 @@
#include "irq_user.h"
#include "irq_kern.h"
#include "ubd_user.h"
-#include "2_5compat.h"
#include "os.h"
#include "mem.h"
#include "mem_kern.h"
#include "cow.h"
-enum ubd_req { UBD_READ, UBD_WRITE, UBD_MMAP };
+enum ubd_req { UBD_READ, UBD_WRITE };
struct io_thread_req {
enum ubd_req op;
@@ -68,8 +67,6 @@ struct io_thread_req {
unsigned long sector_mask;
unsigned long long cow_offset;
unsigned long bitmap_words[2];
- int map_fd;
- unsigned long long map_offset;
int error;
};
@@ -122,10 +119,6 @@ static int ubd_ioctl(struct inode * inode, struct file * file,
#define MAX_DEV (8)
-/* Changed in early boot */
-static int ubd_do_mmap = 0;
-#define UBD_MMAP_BLOCK_SIZE PAGE_SIZE
-
static struct block_device_operations ubd_blops = {
.owner = THIS_MODULE,
.open = ubd_open,
@@ -175,12 +168,6 @@ struct ubd {
int no_cow;
struct cow cow;
struct platform_device pdev;
-
- int map_writes;
- int map_reads;
- int nomap_writes;
- int nomap_reads;
- int write_maps;
};
#define DEFAULT_COW { \
@@ -200,11 +187,6 @@ struct ubd {
.openflags = OPEN_FLAGS, \
.no_cow = 0, \
.cow = DEFAULT_COW, \
- .map_writes = 0, \
- .map_reads = 0, \
- .nomap_writes = 0, \
- .nomap_reads = 0, \
- .write_maps = 0, \
}
struct ubd ubd_dev[MAX_DEV] = { [ 0 ... MAX_DEV - 1 ] = DEFAULT_UBD };
@@ -314,13 +296,6 @@ static int ubd_setup_common(char *str, int *index_out)
int major;
str++;
- if(!strcmp(str, "mmap")){
- CHOOSE_MODE(printk("mmap not supported by the ubd "
- "driver in tt mode\n"),
- ubd_do_mmap = 1);
- return(0);
- }
-
if(!strcmp(str, "sync")){
global_openflags = of_sync(global_openflags);
return(0);
@@ -464,9 +439,9 @@ static int udb_setup(char *str)
__setup("udb", udb_setup);
__uml_help(udb_setup,
"udb\n"
-" This option is here solely to catch ubd -> udb typos, which can be\n\n"
-" to impossible to catch visually unless you specifically look for\n\n"
-" them. The only result of any option starting with 'udb' is an error\n\n"
+" This option is here solely to catch ubd -> udb typos, which can be\n"
+" to impossible to catch visually unless you specifically look for\n"
+" them. The only result of any option starting with 'udb' is an error\n"
" in the boot output.\n\n"
);
@@ -524,7 +499,7 @@ static void ubd_handler(void)
{
struct io_thread_req req;
struct request *rq = elv_next_request(ubd_queue);
- int n, err;
+ int n;
do_ubd = NULL;
intr_count++;
@@ -538,19 +513,6 @@ static void ubd_handler(void)
return;
}
- if((req.op != UBD_MMAP) &&
- ((req.offset != ((__u64) (rq->sector)) << 9) ||
- (req.length != (rq->current_nr_sectors) << 9)))
- panic("I/O op mismatch");
-
- if(req.map_fd != -1){
- err = physmem_subst_mapping(req.buffer, req.map_fd,
- req.map_offset, 1);
- if(err)
- printk("ubd_handler - physmem_subst_mapping failed, "
- "err = %d\n", -err);
- }
-
ubd_finish(rq, req.error);
reactivate_fd(thread_fd, UBD_IRQ);
do_ubd_request(ubd_queue);
@@ -583,14 +545,10 @@ static int ubd_file_size(struct ubd *dev, __u64 *size_out)
static void ubd_close(struct ubd *dev)
{
- if(ubd_do_mmap)
- physmem_forget_descriptor(dev->fd);
os_close_file(dev->fd);
if(dev->cow.file == NULL)
return;
- if(ubd_do_mmap)
- physmem_forget_descriptor(dev->cow.fd);
os_close_file(dev->cow.fd);
vfree(dev->cow.bitmap);
dev->cow.bitmap = NULL;
@@ -1010,94 +968,13 @@ static void cowify_req(struct io_thread_req *req, unsigned long *bitmap,
req->bitmap_words, bitmap_len);
}
-static int mmap_fd(struct request *req, struct ubd *dev, __u64 offset)
-{
- __u64 sector;
- unsigned char *bitmap;
- int bit, i;
-
- /* mmap must have been requested on the command line */
- if(!ubd_do_mmap)
- return(-1);
-
- /* The buffer must be page aligned */
- if(((unsigned long) req->buffer % UBD_MMAP_BLOCK_SIZE) != 0)
- return(-1);
-
- /* The request must be a page long */
- if((req->current_nr_sectors << 9) != PAGE_SIZE)
- return(-1);
-
- if(dev->cow.file == NULL)
- return(dev->fd);
-
- sector = offset >> 9;
- bitmap = (unsigned char *) dev->cow.bitmap;
- bit = ubd_test_bit(sector, bitmap);
-
- for(i = 1; i < req->current_nr_sectors; i++){
- if(ubd_test_bit(sector + i, bitmap) != bit)
- return(-1);
- }
-
- if(bit || (rq_data_dir(req) == WRITE))
- offset += dev->cow.data_offset;
-
- /* The data on disk must be page aligned */
- if((offset % UBD_MMAP_BLOCK_SIZE) != 0)
- return(-1);
-
- return(bit ? dev->fd : dev->cow.fd);
-}
-
-static int prepare_mmap_request(struct ubd *dev, int fd, __u64 offset,
- struct request *req,
- struct io_thread_req *io_req)
-{
- int err;
-
- if(rq_data_dir(req) == WRITE){
- /* Writes are almost no-ops since the new data is already in the
- * host page cache
- */
- dev->map_writes++;
- if(dev->cow.file != NULL)
- cowify_bitmap(io_req->offset, io_req->length,
- &io_req->sector_mask, &io_req->cow_offset,
- dev->cow.bitmap, dev->cow.bitmap_offset,
- io_req->bitmap_words,
- dev->cow.bitmap_len);
- }
- else {
- int w;
-
- if((dev->cow.file != NULL) && (fd == dev->cow.fd))
- w = 0;
- else w = dev->openflags.w;
-
- if((dev->cow.file != NULL) && (fd == dev->fd))
- offset += dev->cow.data_offset;
-
- err = physmem_subst_mapping(req->buffer, fd, offset, w);
- if(err){
- printk("physmem_subst_mapping failed, err = %d\n",
- -err);
- return(1);
- }
- dev->map_reads++;
- }
- io_req->op = UBD_MMAP;
- io_req->buffer = req->buffer;
- return(0);
-}
-
/* Called with ubd_io_lock held */
static int prepare_request(struct request *req, struct io_thread_req *io_req)
{
struct gendisk *disk = req->rq_disk;
struct ubd *dev = disk->private_data;
__u64 offset;
- int len, fd;
+ int len;
if(req->rq_status == RQ_INACTIVE) return(1);
@@ -1114,34 +991,12 @@ static int prepare_request(struct request *req, struct io_thread_req *io_req)
io_req->fds[0] = (dev->cow.file != NULL) ? dev->cow.fd : dev->fd;
io_req->fds[1] = dev->fd;
- io_req->map_fd = -1;
io_req->cow_offset = -1;
io_req->offset = offset;
io_req->length = len;
io_req->error = 0;
io_req->sector_mask = 0;
- fd = mmap_fd(req, dev, io_req->offset);
- if(fd > 0){
- /* If mmapping is otherwise OK, but the first access to the
- * page is a write, then it's not mapped in yet. So we have
- * to write the data to disk first, then we can map the disk
- * page in and continue normally from there.
- */
- if((rq_data_dir(req) == WRITE) && !is_remapped(req->buffer)){
- io_req->map_fd = dev->fd;
- io_req->map_offset = io_req->offset +
- dev->cow.data_offset;
- dev->write_maps++;
- }
- else return(prepare_mmap_request(dev, fd, io_req->offset, req,
- io_req));
- }
-
- if(rq_data_dir(req) == READ)
- dev->nomap_reads++;
- else dev->nomap_writes++;
-
io_req->op = (rq_data_dir(req) == READ) ? UBD_READ : UBD_WRITE;
io_req->offsets[0] = 0;
io_req->offsets[1] = dev->cow.data_offset;
@@ -1229,143 +1084,6 @@ static int ubd_ioctl(struct inode * inode, struct file * file,
return(-EINVAL);
}
-static int ubd_check_remapped(int fd, unsigned long address, int is_write,
- __u64 offset)
-{
- __u64 bitmap_offset;
- unsigned long new_bitmap[2];
- int i, err, n;
-
- /* If it's not a write access, we can't do anything about it */
- if(!is_write)
- return(0);
-
- /* We have a write */
- for(i = 0; i < sizeof(ubd_dev) / sizeof(ubd_dev[0]); i++){
- struct ubd *dev = &ubd_dev[i];
-
- if((dev->fd != fd) && (dev->cow.fd != fd))
- continue;
-
- /* It's a write to a ubd device */
-
- /* This should be impossible now */
- if(!dev->openflags.w){
- /* It's a write access on a read-only device - probably
- * shouldn't happen. If the kernel is trying to change
- * something with no intention of writing it back out,
- * then this message will clue us in that this needs
- * fixing
- */
- printk("Write access to mapped page from readonly ubd "
- "device %d\n", i);
- return(0);
- }
-
- /* It's a write to a writeable ubd device - it must be COWed
- * because, otherwise, the page would have been mapped in
- * writeable
- */
-
- if(!dev->cow.file)
- panic("Write fault on writeable non-COW ubd device %d",
- i);
-
- /* It should also be an access to the backing file since the
- * COW pages should be mapped in read-write
- */
-
- if(fd == dev->fd)
- panic("Write fault on a backing page of ubd "
- "device %d\n", i);
-
- /* So, we do the write, copying the backing data to the COW
- * file...
- */
-
- err = os_seek_file(dev->fd, offset + dev->cow.data_offset);
- if(err < 0)
- panic("Couldn't seek to %lld in COW file of ubd "
- "device %d, err = %d",
- offset + dev->cow.data_offset, i, -err);
-
- n = os_write_file(dev->fd, (void *) address, PAGE_SIZE);
- if(n != PAGE_SIZE)
- panic("Couldn't copy data to COW file of ubd "
- "device %d, err = %d", i, -n);
-
- /* ... updating the COW bitmap... */
-
- cowify_bitmap(offset, PAGE_SIZE, NULL, &bitmap_offset,
- dev->cow.bitmap, dev->cow.bitmap_offset,
- new_bitmap, dev->cow.bitmap_len);
-
- err = os_seek_file(dev->fd, bitmap_offset);
- if(err < 0)
- panic("Couldn't seek to %lld in COW file of ubd "
- "device %d, err = %d", bitmap_offset, i, -err);
-
- n = os_write_file(dev->fd, new_bitmap, sizeof(new_bitmap));
- if(n != sizeof(new_bitmap))
- panic("Couldn't update bitmap of ubd device %d, "
- "err = %d", i, -n);
-
- /* Maybe we can map the COW page in, and maybe we can't. If
- * it is a pre-V3 COW file, we can't, since the alignment will
- * be wrong. If it is a V3 or later COW file which has been
- * moved to a system with a larger page size, then maybe we
- * can't, depending on the exact location of the page.
- */
-
- offset += dev->cow.data_offset;
-
- /* Remove the remapping, putting the original anonymous page
- * back. If the COW file can be mapped in, that is done.
- * Otherwise, the COW page is read in.
- */
-
- if(!physmem_remove_mapping((void *) address))
- panic("Address 0x%lx not remapped by ubd device %d",
- address, i);
- if((offset % UBD_MMAP_BLOCK_SIZE) == 0)
- physmem_subst_mapping((void *) address, dev->fd,
- offset, 1);
- else {
- err = os_seek_file(dev->fd, offset);
- if(err < 0)
- panic("Couldn't seek to %lld in COW file of "
- "ubd device %d, err = %d", offset, i,
- -err);
-
- n = os_read_file(dev->fd, (void *) address, PAGE_SIZE);
- if(n != PAGE_SIZE)
- panic("Failed to read page from offset %llx of "
- "COW file of ubd device %d, err = %d",
- offset, i, -n);
- }
-
- return(1);
- }
-
- /* It's not a write on a ubd device */
- return(0);
-}
-
-static struct remapper ubd_remapper = {
- .list = LIST_HEAD_INIT(ubd_remapper.list),
- .proc = ubd_check_remapped,
-};
-
-static int ubd_remapper_setup(void)
-{
- if(ubd_do_mmap)
- register_remapper(&ubd_remapper);
-
- return(0);
-}
-
-__initcall(ubd_remapper_setup);
-
static int same_backing_files(char *from_cmdline, char *from_cow, char *cow)
{
struct uml_stat buf1, buf2;
@@ -1568,15 +1286,6 @@ void do_io(struct io_thread_req *req)
int err;
__u64 off;
- if(req->op == UBD_MMAP){
- /* Touch the page to force the host to do any necessary IO to
- * get it into memory
- */
- n = *((volatile int *) req->buffer);
- req->error = update_bitmap(req);
- return;
- }
-
nsectors = req->length / req->sectorsize;
start = 0;
do {
diff --git a/arch/um/include/2_5compat.h b/arch/um/include/2_5compat.h
deleted file mode 100644
index abdb015a4d7..00000000000
--- a/arch/um/include/2_5compat.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __2_5_COMPAT_H__
-#define __2_5_COMPAT_H__
-
-#define INIT_HARDSECT(arr, maj, sizes)
-
-#define SET_PRI(task) do ; while(0)
-
-#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/include/sysdep-i386/ptrace.h b/arch/um/include/sysdep-i386/ptrace.h
index 84ec7ff5cf8..6eaeb991998 100644
--- a/arch/um/include/sysdep-i386/ptrace.h
+++ b/arch/um/include/sysdep-i386/ptrace.h
@@ -31,7 +31,6 @@ extern int sysemu_supported;
#ifdef UML_CONFIG_MODE_SKAS
#include "skas_ptregs.h"
-#include "sysdep/faultinfo.h"
#define REGS_IP(r) ((r)[HOST_IP])
#define REGS_SP(r) ((r)[HOST_SP])
@@ -59,6 +58,7 @@ extern int sysemu_supported;
#define PTRACE_SYSEMU_SINGLESTEP 32
#endif
+#include "sysdep/faultinfo.h"
#include "choose-mode.h"
union uml_pt_regs {
diff --git a/arch/um/include/sysdep-x86_64/checksum.h b/arch/um/include/sysdep-x86_64/checksum.h
index 572c6c19be3..ea97005af69 100644
--- a/arch/um/include/sysdep-x86_64/checksum.h
+++ b/arch/um/include/sysdep-x86_64/checksum.h
@@ -9,8 +9,6 @@
#include "linux/in6.h"
#include "asm/uaccess.h"
-extern unsigned int csum_partial_copy_from(const unsigned char *src, unsigned char *dst, int len,
- int sum, int *err_ptr);
extern unsigned csum_partial(const unsigned char *buff, unsigned len,
unsigned sum);
@@ -31,10 +29,15 @@ unsigned int csum_partial_copy_nocheck(const unsigned char *src, unsigned char *
}
static __inline__
-unsigned int csum_partial_copy_from_user(const unsigned char *src, unsigned char *dst,
- int len, int sum, int *err_ptr)
+unsigned int csum_partial_copy_from_user(const unsigned char *src,
+ unsigned char *dst, int len, int sum,
+ int *err_ptr)
{
- return csum_partial_copy_from(src, dst, len, sum, err_ptr);
+ if(copy_from_user(dst, src, len)){
+ *err_ptr = -EFAULT;
+ return(-1);
+ }
+ return csum_partial(dst, len, sum);
}
/**
@@ -137,15 +140,6 @@ static inline unsigned add32_with_carry(unsigned a, unsigned b)
return a;
}
-#endif
+extern unsigned short ip_compute_csum(unsigned char * buff, int len);
-/*
- * 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:
- */
+#endif
diff --git a/arch/um/include/sysdep-x86_64/ptrace.h b/arch/um/include/sysdep-x86_64/ptrace.h
index 348e8fcd513..be8acd5efd9 100644
--- a/arch/um/include/sysdep-x86_64/ptrace.h
+++ b/arch/um/include/sysdep-x86_64/ptrace.h
@@ -135,6 +135,7 @@ extern int mode_tt;
__CHOOSE_MODE(SC_EFLAGS(UPT_SC(r)), REGS_EFLAGS((r)->skas.regs))
#define UPT_SC(r) ((r)->tt.sc)
#define UPT_SYSCALL_NR(r) __CHOOSE_MODE((r)->tt.syscall, (r)->skas.syscall)
+#define UPT_SYSCALL_RET(r) UPT_RAX(r)
extern int user_context(unsigned long sp);
@@ -196,32 +197,32 @@ struct syscall_args {
#define UPT_SET(regs, reg, val) \
- ({ unsigned long val; \
+ ({ unsigned long __upt_val = val; \
switch(reg){ \
- case R8: UPT_R8(regs) = val; break; \
- case R9: UPT_R9(regs) = val; break; \
- case R10: UPT_R10(regs) = val; break; \
- case R11: UPT_R11(regs) = val; break; \
- case R12: UPT_R12(regs) = val; break; \
- case R13: UPT_R13(regs) = val; break; \
- case R14: UPT_R14(regs) = val; break; \
- case R15: UPT_R15(regs) = val; break; \
- case RIP: UPT_IP(regs) = val; break; \
- case RSP: UPT_SP(regs) = val; break; \
- case RAX: UPT_RAX(regs) = val; break; \
- case RBX: UPT_RBX(regs) = val; break; \
- case RCX: UPT_RCX(regs) = val; break; \
- case RDX: UPT_RDX(regs) = val; break; \
- case RSI: UPT_RSI(regs) = val; break; \
- case RDI: UPT_RDI(regs) = val; break; \
- case RBP: UPT_RBP(regs) = val; break; \
- case ORIG_RAX: UPT_ORIG_RAX(regs) = val; break; \
- case CS: UPT_CS(regs) = val; break; \
- case DS: UPT_DS(regs) = val; break; \
- case ES: UPT_ES(regs) = val; break; \
- case FS: UPT_FS(regs) = val; break; \
- case GS: UPT_GS(regs) = val; break; \
- case EFLAGS: UPT_EFLAGS(regs) = val; break; \
+ case R8: UPT_R8(regs) = __upt_val; break; \
+ case R9: UPT_R9(regs) = __upt_val; break; \
+ case R10: UPT_R10(regs) = __upt_val; break; \
+ case R11: UPT_R11(regs) = __upt_val; break; \
+ case R12: UPT_R12(regs) = __upt_val; break; \
+ case R13: UPT_R13(regs) = __upt_val; break; \
+ case R14: UPT_R14(regs) = __upt_val; break; \
+ case R15: UPT_R15(regs) = __upt_val; break; \
+ case RIP: UPT_IP(regs) = __upt_val; break; \
+ case RSP: UPT_SP(regs) = __upt_val; break; \
+ case RAX: UPT_RAX(regs) = __upt_val; break; \
+ case RBX: UPT_RBX(regs) = __upt_val; break; \
+ case RCX: UPT_RCX(regs) = __upt_val; break; \
+ case RDX: UPT_RDX(regs) = __upt_val; break; \
+ case RSI: UPT_RSI(regs) = __upt_val; break; \
+ case RDI: UPT_RDI(regs) = __upt_val; break; \
+ case RBP: UPT_RBP(regs) = __upt_val; break; \
+ case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \
+ case CS: UPT_CS(regs) = __upt_val; break; \
+ case DS: UPT_DS(regs) = __upt_val; break; \
+ case ES: UPT_ES(regs) = __upt_val; break; \
+ case FS: UPT_FS(regs) = __upt_val; break; \
+ case GS: UPT_GS(regs) = __upt_val; break; \
+ case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \
default : \
panic("Bad register in UPT_SET : %d\n", reg); \
break; \
@@ -245,14 +246,3 @@ struct syscall_args {
CHOOSE_MODE((&(r)->tt.faultinfo), (&(r)->skas.faultinfo))
#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/include/sysrq.h b/arch/um/include/sysrq.h
index 2ce9423460b..c8d332b56b9 100644
--- a/arch/um/include/sysrq.h
+++ b/arch/um/include/sysrq.h
@@ -1,6 +1,7 @@
#ifndef __UM_SYSRQ_H
#define __UM_SYSRQ_H
-extern void show_trace(unsigned long *stack);
+struct task_struct;
+extern void show_trace(struct task_struct* task, unsigned long *stack);
#endif
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index 9736ca27c5f..a8918e80df9 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -14,7 +14,7 @@ obj-y = config.o exec_kern.o exitcode.o \
tlb.o trap_kern.o trap_user.o uaccess_user.o um_arch.o umid.o \
user_util.o
-obj-$(CONFIG_BLK_DEV_INITRD) += initrd_kern.o initrd_user.o
+obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
obj-$(CONFIG_GPROF) += gprof_syms.o
obj-$(CONFIG_GCOV) += gmon_syms.o
obj-$(CONFIG_TTY_LOG) += tty_log.o
diff --git a/arch/um/kernel/checksum.c b/arch/um/kernel/checksum.c
deleted file mode 100644
index e69de29bb2d..00000000000
--- a/arch/um/kernel/checksum.c
+++ /dev/null
diff --git a/arch/um/kernel/exec_kern.c b/arch/um/kernel/exec_kern.c
index 49ddabe69be..efd222ffe20 100644
--- a/arch/um/kernel/exec_kern.c
+++ b/arch/um/kernel/exec_kern.c
@@ -16,7 +16,6 @@
#include "kern.h"
#include "irq_user.h"
#include "tlb.h"
-#include "2_5compat.h"
#include "os.h"
#include "time_user.h"
#include "choose-mode.h"
diff --git a/arch/um/kernel/initrd_kern.c b/arch/um/kernel/initrd.c
index fc568af468b..82ecf904b09 100644
--- a/arch/um/kernel/initrd_kern.c
+++ b/arch/um/kernel/initrd.c
@@ -41,12 +41,31 @@ static int __init uml_initrd_setup(char *line, int *add)
return 0;
}
-__uml_setup("initrd=", uml_initrd_setup,
+__uml_setup("initrd=", uml_initrd_setup,
"initrd=<initrd image>\n"
" This is used to boot UML from an initrd image. The argument is the\n"
" name of the file containing the image.\n\n"
);
+int load_initrd(char *filename, void *buf, int size)
+{
+ int fd, n;
+
+ fd = os_open_file(filename, of_read(OPENFLAGS()), 0);
+ if(fd < 0){
+ printk("Opening '%s' failed - err = %d\n", filename, -fd);
+ return(-1);
+ }
+ n = os_read_file(fd, buf, size);
+ if(n != size){
+ printk("Read of %d bytes from '%s' failed, err = %d\n", size,
+ filename, -n);
+ return(-1);
+ }
+
+ os_close_file(fd);
+ return(0);
+}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
diff --git a/arch/um/kernel/initrd_user.c b/arch/um/kernel/initrd_user.c
deleted file mode 100644
index cb90681e151..00000000000
--- a/arch/um/kernel/initrd_user.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-
-#include "user_util.h"
-#include "kern_util.h"
-#include "user.h"
-#include "initrd.h"
-#include "os.h"
-
-int load_initrd(char *filename, void *buf, int size)
-{
- int fd, n;
-
- fd = os_open_file(filename, of_read(OPENFLAGS()), 0);
- if(fd < 0){
- printk("Opening '%s' failed - err = %d\n", filename, -fd);
- return(-1);
- }
- n = os_read_file(fd, buf, size);
- if(n != size){
- printk("Read of %d bytes from '%s' failed, err = %d\n", size,
- filename, -n);
- return(-1);
- }
-
- os_close_file(fd);
- return(0);
-}
-
-/*
- * 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 78d69dc74b2..99439fa15ef 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -57,6 +57,7 @@ EXPORT_SYMBOL(copy_to_user_tt);
EXPORT_SYMBOL(strncpy_from_user_skas);
EXPORT_SYMBOL(copy_to_user_skas);
EXPORT_SYMBOL(copy_from_user_skas);
+EXPORT_SYMBOL(clear_user_skas);
#endif
EXPORT_SYMBOL(uml_strdup);
diff --git a/arch/um/kernel/main.c b/arch/um/kernel/main.c
index a17c49703f9..e42e6364ca1 100644
--- a/arch/um/kernel/main.c
+++ b/arch/um/kernel/main.c
@@ -71,7 +71,7 @@ static __init void do_uml_initcalls(void)
static void last_ditch_exit(int sig)
{
- CHOOSE_MODE(kmalloc_ok = 0, (void) 0);
+ kmalloc_ok = 0;
signal(SIGINT, SIG_DFL);
signal(SIGTERM, SIG_DFL);
signal(SIGHUP, SIG_DFL);
@@ -87,7 +87,7 @@ int main(int argc, char **argv, char **envp)
{
char **new_argv;
sigset_t mask;
- int ret, i;
+ int ret, i, err;
/* Enable all signals except SIGIO - in some environments, we can
* enter with some signals blocked
@@ -160,27 +160,29 @@ int main(int argc, char **argv, char **envp)
*/
change_sig(SIGPROF, 0);
- /* Reboot */
- if(ret){
- int err;
-
- printf("\n");
+ /* This signal stuff used to be in the reboot case. However,
+ * sometimes a SIGVTALRM can come in when we're halting (reproducably
+ * when writing out gcov information, presumably because that takes
+ * some time) and cause a segfault.
+ */
- /* stop timers and set SIG*ALRM to be ignored */
- disable_timer();
+ /* stop timers and set SIG*ALRM to be ignored */
+ disable_timer();
- /* disable SIGIO for the fds and set SIGIO to be ignored */
- err = deactivate_all_fds();
- if(err)
- printf("deactivate_all_fds failed, errno = %d\n",
- -err);
+ /* disable SIGIO for the fds and set SIGIO to be ignored */
+ err = deactivate_all_fds();
+ if(err)
+ printf("deactivate_all_fds failed, errno = %d\n", -err);
- /* Let any pending signals fire now. This ensures
- * that they won't be delivered after the exec, when
- * they are definitely not expected.
- */
- unblock_signals();
+ /* Let any pending signals fire now. This ensures
+ * that they won't be delivered after the exec, when
+ * they are definitely not expected.
+ */
+ unblock_signals();
+ /* Reboot */
+ if(ret){
+ printf("\n");
execvp(new_argv[0], new_argv);
perror("Failed to exec kernel");
ret = 1;
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index f156661781c..c22825f13e4 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -100,12 +100,37 @@ void mem_init(void)
#endif
}
+/*
+ * Create a page table and place a pointer to it in a middle page
+ * directory entry.
+ */
+static void __init one_page_table_init(pmd_t *pmd)
+{
+ if (pmd_none(*pmd)) {
+ pte_t *pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+ set_pmd(pmd, __pmd(_KERNPG_TABLE +
+ (unsigned long) __pa(pte)));
+ if (pte != pte_offset_kernel(pmd, 0))
+ BUG();
+ }
+}
+
+static void __init one_md_table_init(pud_t *pud)
+{
+#ifdef CONFIG_3_LEVEL_PGTABLES
+ pmd_t *pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+ set_pud(pud, __pud(_KERNPG_TABLE + (unsigned long) __pa(pmd_table)));
+ if (pmd_table != pmd_offset(pud, 0))
+ BUG();
+#endif
+}
+
static void __init fixrange_init(unsigned long start, unsigned long end,
pgd_t *pgd_base)
{
pgd_t *pgd;
+ pud_t *pud;
pmd_t *pmd;
- pte_t *pte;
int i, j;
unsigned long vaddr;
@@ -115,15 +140,12 @@ static void __init fixrange_init(unsigned long start, unsigned long end,
pgd = pgd_base + i;
for ( ; (i < PTRS_PER_PGD) && (vaddr < end); pgd++, i++) {
- pmd = (pmd_t *)pgd;
+ pud = pud_offset(pgd, vaddr);
+ if (pud_none(*pud))
+ one_md_table_init(pud);
+ pmd = pmd_offset(pud, vaddr);
for (; (j < PTRS_PER_PMD) && (vaddr != end); pmd++, j++) {
- if (pmd_none(*pmd)) {
- pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
- set_pmd(pmd, __pmd(_KERNPG_TABLE +
- (unsigned long) __pa(pte)));
- if (pte != pte_offset_kernel(pmd, 0))
- BUG();
- }
+ one_page_table_init(pmd);
vaddr += PMD_SIZE;
}
j = 0;
diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c
index c1adf7ba3fd..804c6bbdf67 100644
--- a/arch/um/kernel/process_kern.c
+++ b/arch/um/kernel/process_kern.c
@@ -43,7 +43,6 @@
#include "tlb.h"
#include "frame_kern.h"
#include "sigcontext.h"
-#include "2_5compat.h"
#include "os.h"
#include "mode.h"
#include "mode_kern.h"
@@ -55,18 +54,6 @@
*/
struct cpu_task cpu_tasks[NR_CPUS] = { [0 ... NR_CPUS - 1] = { -1, NULL } };
-struct task_struct *get_task(int pid, int require)
-{
- struct task_struct *ret;
-
- read_lock(&tasklist_lock);
- ret = find_task_by_pid(pid);
- read_unlock(&tasklist_lock);
-
- if(require && (ret == NULL)) panic("get_task couldn't find a task\n");
- return(ret);
-}
-
int external_pid(void *t)
{
struct task_struct *task = t ? t : current;
@@ -189,7 +176,6 @@ void default_idle(void)
while(1){
/* endless idle loop with no priority at all */
- SET_PRI(current);
/*
* although we are an idle CPU, we do not want to
@@ -212,11 +198,6 @@ int page_size(void)
return(PAGE_SIZE);
}
-unsigned long page_mask(void)
-{
- return(PAGE_MASK);
-}
-
void *um_virt_to_phys(struct task_struct *task, unsigned long addr,
pte_t *pte_out)
{
@@ -349,11 +330,6 @@ char *uml_strdup(char *string)
return(new);
}
-void *get_init_task(void)
-{
- return(&init_thread_union.thread_info.task);
-}
-
int copy_to_user_proc(void __user *to, void *from, int size)
{
return(copy_to_user(to, from, size));
@@ -480,15 +456,3 @@ unsigned long arch_align_stack(unsigned long sp)
return sp & ~0xf;
}
#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/ptrace.c b/arch/um/kernel/ptrace.c
index 2b75d8d9ba7..71af4d50389 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -28,9 +28,9 @@ static inline void set_singlestepping(struct task_struct *child, int on)
child->thread.singlestep_syscall = 0;
#ifdef SUBARCH_SET_SINGLESTEPPING
- SUBARCH_SET_SINGLESTEPPING(child, on)
+ SUBARCH_SET_SINGLESTEPPING(child, on);
#endif
- }
+}
/*
* Called by kernel/ptrace.c when detaching..
@@ -83,7 +83,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
}
#ifdef SUBACH_PTRACE_SPECIAL
- SUBARCH_PTRACE_SPECIAL(child,request,addr,data)
+ SUBARCH_PTRACE_SPECIAL(child,request,addr,data);
#endif
ret = ptrace_check_attach(child, request == PTRACE_KILL);
@@ -322,11 +322,9 @@ void syscall_trace(union uml_pt_regs *regs, int entryexit)
UPT_SYSCALL_ARG2(regs),
UPT_SYSCALL_ARG3(regs),
UPT_SYSCALL_ARG4(regs));
- else {
- int res = UPT_SYSCALL_RET(regs);
- audit_syscall_exit(current, AUDITSC_RESULT(res),
- res);
- }
+ else audit_syscall_exit(current,
+ AUDITSC_RESULT(UPT_SYSCALL_RET(regs)),
+ UPT_SYSCALL_RET(regs));
}
/* Fake a debug trap */
@@ -356,14 +354,3 @@ void syscall_trace(union uml_pt_regs *regs, int entryexit)
current->exit_code = 0;
}
}
-
-/*
- * 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/sysrq.c b/arch/um/kernel/sysrq.c
index e630438f9e7..f80850091e7 100644
--- a/arch/um/kernel/sysrq.c
+++ b/arch/um/kernel/sysrq.c
@@ -3,6 +3,7 @@
* Licensed under the GPL
*/
+#include "linux/config.h"
#include "linux/sched.h"
#include "linux/kernel.h"
#include "linux/module.h"
@@ -12,14 +13,14 @@
#include "sysrq.h"
#include "user_util.h"
-void show_trace(unsigned long * stack)
+/* Catch non-i386 SUBARCH's. */
+#if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT)
+void show_trace(struct task_struct *task, unsigned long * stack)
{
- /* XXX: Copy the CONFIG_FRAME_POINTER stack-walking backtrace from
- * arch/i386/kernel/traps.c, and then move this to sys-i386/sysrq.c.*/
unsigned long addr;
if (!stack) {
- stack = (unsigned long*) &stack;
+ stack = (unsigned long*) &stack;
WARN_ON(1);
}
@@ -35,6 +36,7 @@ void show_trace(unsigned long * stack)
}
printk("\n");
}
+#endif
/*
* stack dumps generator - this is used by arch-independent code.
@@ -44,7 +46,7 @@ void dump_stack(void)
{
unsigned long stack;
- show_trace(&stack);
+ show_trace(current, &stack);
}
EXPORT_SYMBOL(dump_stack);
@@ -59,7 +61,11 @@ void show_stack(struct task_struct *task, unsigned long *esp)
int i;
if (esp == NULL) {
- if (task != current) {
+ if (task != current && task != NULL) {
+ /* XXX: Isn't this bogus? I.e. isn't this the
+ * *userspace* stack of this task? If not so, use this
+ * even when task == current (as in i386).
+ */
esp = (unsigned long *) KSTK_ESP(task);
/* Which one? No actual difference - just coding style.*/
//esp = (unsigned long *) PT_REGS_IP(&task->thread.regs);
@@ -77,5 +83,6 @@ void show_stack(struct task_struct *task, unsigned long *esp)
printk("%08lx ", *stack++);
}
- show_trace(esp);
+ printk("Call Trace: \n");
+ show_trace(current, esp);
}
diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c
index 5fca2c61eb9..c20aef12059 100644
--- a/arch/um/kernel/trap_kern.c
+++ b/arch/um/kernel/trap_kern.c
@@ -23,7 +23,6 @@
#include "kern.h"
#include "chan_kern.h"
#include "mconsole_kern.h"
-#include "2_5compat.h"
#include "mem.h"
#include "mem_kern.h"
@@ -57,10 +56,11 @@ int handle_page_fault(unsigned long address, unsigned long ip,
*code_out = SEGV_ACCERR;
if(is_write && !(vma->vm_flags & VM_WRITE))
goto out;
+
+ if(!(vma->vm_flags & (VM_READ | VM_EXEC)))
+ goto out;
+
page = address & PAGE_MASK;
- pgd = pgd_offset(mm, page);
- pud = pud_offset(pgd, page);
- pmd = pmd_offset(pud, page);
do {
survive:
switch (handle_mm_fault(mm, vma, address, is_write)){
@@ -106,33 +106,6 @@ out_of_memory:
goto out;
}
-LIST_HEAD(physmem_remappers);
-
-void register_remapper(struct remapper *info)
-{
- list_add(&info->list, &physmem_remappers);
-}
-
-static int check_remapped_addr(unsigned long address, int is_write)
-{
- struct remapper *remapper;
- struct list_head *ele;
- __u64 offset;
- int fd;
-
- fd = phys_mapping(__pa(address), &offset);
- if(fd == -1)
- return(0);
-
- list_for_each(ele, &physmem_remappers){
- remapper = list_entry(ele, struct remapper, list);
- if((*remapper->proc)(fd, address, is_write, offset))
- return(1);
- }
-
- return(0);
-}
-
/*
* We give a *copy* of the faultinfo in the regs to segv.
* This must be done, since nesting SEGVs could overwrite
@@ -151,8 +124,6 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc)
flush_tlb_kernel_vm();
return(0);
}
- else if(check_remapped_addr(address & PAGE_MASK, is_write))
- return(0);
else if(current->mm == NULL)
panic("Segfault with no mm");
err = handle_page_fault(address, ip, is_write, is_user, &si.si_code);
diff --git a/arch/um/kernel/tt/ksyms.c b/arch/um/kernel/tt/ksyms.c
index 92ec85d67c7..84a9385a8fe 100644
--- a/arch/um/kernel/tt/ksyms.c
+++ b/arch/um/kernel/tt/ksyms.c
@@ -12,6 +12,7 @@ EXPORT_SYMBOL(__do_copy_to_user);
EXPORT_SYMBOL(__do_strncpy_from_user);
EXPORT_SYMBOL(__do_strnlen_user);
EXPORT_SYMBOL(__do_clear_user);
+EXPORT_SYMBOL(clear_user_tt);
EXPORT_SYMBOL(tracing_pid);
EXPORT_SYMBOL(honeypot);
diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index df810ca8fc1..776310fd5b8 100644
--- a/arch/um/kernel/tt/process_kern.c
+++ b/arch/um/kernel/tt/process_kern.c
@@ -32,10 +32,6 @@ void *switch_to_tt(void *prev, void *next, void *last)
unsigned long flags;
int err, vtalrm, alrm, prof, cpu;
char c;
- /* jailing and SMP are incompatible, so this doesn't need to be
- * made per-cpu
- */
- static int reading;
from = prev;
to = next;
@@ -59,13 +55,11 @@ void *switch_to_tt(void *prev, void *next, void *last)
c = 0;
set_current(to);
- reading = 0;
err = os_write_file(to->thread.mode.tt.switch_pipe[1], &c, sizeof(c));
if(err != sizeof(c))
panic("write of switch_pipe failed, err = %d", -err);
- reading = 1;
- if(from->thread.mode.tt.switch_pipe[0] == -1)
+ if(from->thread.mode.tt.switch_pipe[0] == -1)
os_kill_process(os_getpid(), 0);
err = os_read_file(from->thread.mode.tt.switch_pipe[0], &c, sizeof(c));
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 4d10ec372a6..418427107b2 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -111,12 +111,6 @@ struct seq_operations cpuinfo_op = {
.show = show_cpuinfo,
};
-pte_t * __bad_pagetable(void)
-{
- panic("Someone should implement __bad_pagetable");
- return(NULL);
-}
-
/* Set in linux_main */
unsigned long host_task_size;
unsigned long task_size;
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index 76eadb30918..dd5355500bd 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -73,6 +73,8 @@ SECTIONS
.got : { *(.got.plt) *(.got) }
.dynamic : { *(.dynamic) }
+ .tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
+ .tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
/* We want the small data sections together, so single-instruction offsets
can access them all, and initialized data all before uninitialized, so
we can shorten the on-disk segment size. */
diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile
index fcd67c3414e..4351e560550 100644
--- a/arch/um/sys-i386/Makefile
+++ b/arch/um/sys-i386/Makefile
@@ -9,11 +9,11 @@ USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o
SYMLINKS = bitops.c semaphore.c highmem.c module.c
+include arch/um/scripts/Makefile.rules
+
bitops.c-dir = lib
semaphore.c-dir = kernel
highmem.c-dir = mm
module.c-dir = kernel
subdir- := util
-
-include arch/um/scripts/Makefile.rules
diff --git a/arch/um/sys-i386/delay.c b/arch/um/sys-i386/delay.c
index e9892eef51c..2c11b9770e8 100644
--- a/arch/um/sys-i386/delay.c
+++ b/arch/um/sys-i386/delay.c
@@ -1,5 +1,7 @@
-#include "linux/delay.h"
-#include "asm/param.h"
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <asm/param.h>
void __delay(unsigned long time)
{
@@ -20,13 +22,19 @@ void __udelay(unsigned long usecs)
int i, n;
n = (loops_per_jiffy * HZ * usecs) / MILLION;
- for(i=0;i<n;i++) ;
+ for(i=0;i<n;i++)
+ cpu_relax();
}
+EXPORT_SYMBOL(__udelay);
+
void __const_udelay(unsigned long usecs)
{
int i, n;
n = (loops_per_jiffy * HZ * usecs) / MILLION;
- for(i=0;i<n;i++) ;
+ for(i=0;i<n;i++)
+ cpu_relax();
}
+
+EXPORT_SYMBOL(__const_udelay);
diff --git a/arch/um/sys-i386/sysrq.c b/arch/um/sys-i386/sysrq.c
index 281fc7b8ca0..e3706d15c4f 100644
--- a/arch/um/sys-i386/sysrq.c
+++ b/arch/um/sys-i386/sysrq.c
@@ -3,12 +3,15 @@
* Licensed under the GPL
*/
+#include "linux/config.h"
#include "linux/kernel.h"
#include "linux/smp.h"
#include "linux/sched.h"
+#include "linux/kallsyms.h"
#include "asm/ptrace.h"
#include "sysrq.h"
+/* This is declared by <linux/sched.h> */
void show_regs(struct pt_regs *regs)
{
printk("\n");
@@ -31,5 +34,80 @@ void show_regs(struct pt_regs *regs)
0xffff & PT_REGS_DS(regs),
0xffff & PT_REGS_ES(regs));
- show_trace((unsigned long *) &regs);
+ show_trace(NULL, (unsigned long *) &regs);
}
+
+/* Copied from i386. */
+static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
+{
+ return p > (void *)tinfo &&
+ p < (void *)tinfo + THREAD_SIZE - 3;
+}
+
+/* Adapted from i386 (we also print the address we read from). */
+static inline unsigned long print_context_stack(struct thread_info *tinfo,
+ unsigned long *stack, unsigned long ebp)
+{
+ unsigned long addr;
+
+#ifdef CONFIG_FRAME_POINTER
+ while (valid_stack_ptr(tinfo, (void *)ebp)) {
+ addr = *(unsigned long *)(ebp + 4);
+ printk("%08lx: [<%08lx>]", ebp + 4, addr);
+ print_symbol(" %s", addr);
+ printk("\n");
+ ebp = *(unsigned long *)ebp;
+ }
+#else
+ while (valid_stack_ptr(tinfo, stack)) {
+ addr = *stack;
+ if (__kernel_text_address(addr)) {
+ printk("%08lx: [<%08lx>]", (unsigned long) stack, addr);
+ print_symbol(" %s", addr);
+ printk("\n");
+ }
+ stack++;
+ }
+#endif
+ return ebp;
+}
+
+void show_trace(struct task_struct* task, unsigned long * stack)
+{
+ unsigned long ebp;
+ struct thread_info *context;
+
+ /* Turn this into BUG_ON if possible. */
+ if (!stack) {
+ stack = (unsigned long*) &stack;
+ printk("show_trace: got NULL stack, implicit assumption task == current");
+ WARN_ON(1);
+ }
+
+ if (!task)
+ task = current;
+
+ if (task != current) {
+ //ebp = (unsigned long) KSTK_EBP(task);
+ /* Which one? No actual difference - just coding style.*/
+ ebp = (unsigned long) PT_REGS_EBP(&task->thread.regs);
+ } else {
+ asm ("movl %%ebp, %0" : "=r" (ebp) : );
+ }
+
+ context = (struct thread_info *)
+ ((unsigned long)stack & (~(THREAD_SIZE - 1)));
+ print_context_stack(context, stack, ebp);
+
+ /*while (((long) stack & (THREAD_SIZE-1)) != 0) {
+ addr = *stack;
+ if (__kernel_text_address(addr)) {
+ printk("%08lx: [<%08lx>]", (unsigned long) stack, addr);
+ print_symbol(" %s", addr);
+ printk("\n");
+ }
+ stack++;
+ }*/
+ printk("\n");
+}
+
diff --git a/arch/um/sys-ppc/sysrq.c b/arch/um/sys-ppc/sysrq.c
index 82d6e9335bb..2f816f1a0ff 100644
--- a/arch/um/sys-ppc/sysrq.c
+++ b/arch/um/sys-ppc/sysrq.c
@@ -27,17 +27,5 @@ void show_regs(struct pt_regs_subarch *regs)
0xffff & regs->xds, 0xffff & regs->xes);
#endif
- show_trace(&regs->gpr[1]);
+ show_trace(current, &regs->gpr[1]);
}
-
-
-/*
- * 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/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile
index 3d7da911cc8..608466ad6b2 100644
--- a/arch/um/sys-x86_64/Makefile
+++ b/arch/um/sys-x86_64/Makefile
@@ -14,11 +14,11 @@ obj-$(CONFIG_MODULES) += module.o um_module.o
USER_OBJS := ptrace_user.o sigcontext.o
-include arch/um/scripts/Makefile.rules
-
SYMLINKS = bitops.c csum-copy.S csum-partial.c csum-wrappers.c memcpy.S \
semaphore.c thunk.S module.c
+include arch/um/scripts/Makefile.rules
+
bitops.c-dir = lib
csum-copy.S-dir = lib
csum-partial.c-dir = lib
@@ -28,6 +28,4 @@ semaphore.c-dir = kernel
thunk.S-dir = lib
module.c-dir = kernel
-CFLAGS_csum-partial.o := -Dcsum_partial=arch_csum_partial
-
subdir- := util
diff --git a/arch/um/sys-x86_64/delay.c b/arch/um/sys-x86_64/delay.c
index 651332aeec2..137f4446b43 100644
--- a/arch/um/sys-x86_64/delay.c
+++ b/arch/um/sys-x86_64/delay.c
@@ -5,40 +5,37 @@
* Licensed under the GPL
*/
-#include "linux/delay.h"
-#include "asm/processor.h"
-#include "asm/param.h"
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <asm/processor.h>
+#include <asm/param.h>
void __delay(unsigned long loops)
{
unsigned long i;
- for(i = 0; i < loops; i++) ;
+ for(i = 0; i < loops; i++)
+ cpu_relax();
}
void __udelay(unsigned long usecs)
{
- int i, n;
+ unsigned long i, n;
n = (loops_per_jiffy * HZ * usecs) / MILLION;
- for(i=0;i<n;i++) ;
+ for(i=0;i<n;i++)
+ cpu_relax();
}
+EXPORT_SYMBOL(__udelay);
+
void __const_udelay(unsigned long usecs)
{
- int i, n;
+ unsigned long i, n;
n = (loops_per_jiffy * HZ * usecs) / MILLION;
- for(i=0;i<n;i++) ;
+ for(i=0;i<n;i++)
+ cpu_relax();
}
-/*
- * 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:
- */
+EXPORT_SYMBOL(__const_udelay);
diff --git a/arch/um/sys-x86_64/ksyms.c b/arch/um/sys-x86_64/ksyms.c
index a27f0ee6a4f..85927380820 100644
--- a/arch/um/sys-x86_64/ksyms.c
+++ b/arch/um/sys-x86_64/ksyms.c
@@ -16,5 +16,4 @@ EXPORT_SYMBOL(__up_wakeup);
EXPORT_SYMBOL(__memcpy);
/* Networking helper routines. */
-/*EXPORT_SYMBOL(csum_partial_copy_from);
-EXPORT_SYMBOL(csum_partial_copy_to);*/
+EXPORT_SYMBOL(ip_compute_csum);
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c
index b593bb256f2..74eee5c7c6d 100644
--- a/arch/um/sys-x86_64/ptrace.c
+++ b/arch/um/sys-x86_64/ptrace.c
@@ -5,10 +5,11 @@
*/
#define __FRAME_OFFSETS
-#include "asm/ptrace.h"
-#include "linux/sched.h"
-#include "linux/errno.h"
-#include "asm/elf.h"
+#include <asm/ptrace.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/elf.h>
/* XXX x86_64 */
unsigned long not_ss;
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
index dd9914642b8..6f44f40204e 100644
--- a/arch/um/sys-x86_64/syscalls.c
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -15,6 +15,7 @@
#include "asm/unistd.h"
#include "asm/prctl.h" /* XXX This should get the constants from libc */
#include "choose-mode.h"
+#include "kern.h"
asmlinkage long sys_uname64(struct new_utsname __user * name)
{
@@ -132,23 +133,27 @@ static long arch_prctl_tt(int code, unsigned long addr)
#ifdef CONFIG_MODE_SKAS
+/* XXX: Must also call arch_prctl in the host, beside saving the segment bases! */
static long arch_prctl_skas(int code, unsigned long addr)
{
long ret = 0;
switch(code){
- case ARCH_SET_GS:
- current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
- break;
case ARCH_SET_FS:
current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr;
break;
+ case ARCH_SET_GS:
+ current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
+ break;
case ARCH_GET_FS:
- ret = put_user(current->thread.regs.regs.skas.regs[GS / sizeof(unsigned long)], &addr);
+ ret = put_user(current->thread.regs.regs.skas.
+ regs[FS_BASE / sizeof(unsigned long)],
+ (unsigned long __user *)addr);
break;
case ARCH_GET_GS:
- ret = put_user(current->thread.regs.regs.skas.regs[FS / sizeof(unsigned \
-long)], &addr);
+ ret = put_user(current->thread.regs.regs.skas.
+ regs[GS_BASE / sizeof(unsigned long)],
+ (unsigned long __user *)addr);
break;
default:
ret = -EINVAL;
diff --git a/arch/um/sys-x86_64/sysrq.c b/arch/um/sys-x86_64/sysrq.c
index ddf74691a61..d0a25af19a5 100644
--- a/arch/um/sys-x86_64/sysrq.c
+++ b/arch/um/sys-x86_64/sysrq.c
@@ -36,14 +36,5 @@ void __show_regs(struct pt_regs * regs)
void show_regs(struct pt_regs *regs)
{
__show_regs(regs);
- show_trace((unsigned long *) &regs);
+ show_trace(current, (unsigned long *) &regs);
}
-
-/* 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/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c
index 5e14792e483..513d17ceafd 100644
--- a/arch/um/sys-x86_64/user-offsets.c
+++ b/arch/um/sys-x86_64/user-offsets.c
@@ -3,6 +3,14 @@
#include <signal.h>
#define __FRAME_OFFSETS
#include <asm/ptrace.h>
+#include <asm/types.h>
+/* For some reason, x86_64 defines u64 and u32 only in <pci/types.h>, which I
+ * refuse to include here, even though they're used throughout the headers.
+ * These are used in asm/user.h, and that include can't be avoided because of
+ * the sizeof(struct user_regs_struct) below.
+ */
+typedef __u64 u64;
+typedef __u32 u32;
#include <asm/user.h>
#define DEFINE(sym, val) \