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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] Change references to /dev/xen/evtchn to /dev/evtchn
Change all references to /dev/xen/evtchn to /dev/evtchn as this is where udev creates the device entry. /dev/xen was the location that we used under devfs. In some of the tools, we were creating /dev/xen/evtchn if it did not already exist. We really should not do that.We currently use the reserved major/minor range. Strictly, this is not right as we may conflict with other software. Ideally, we should use random major/minor numbers and optionally take the major/minor number as a module parameter. Regards, Anthony Liguori # HG changeset patch
# User anthony@xxxxxxxxxxxxxxxxxxxxx
# Node ID b3cd1fd958bfa45f3194b2e950edc885e24d8261
# Parent 10a3d4fbd9b420f7a6e0e02bae068ff5a8f57cdf
Change all references to /dev/xen/evtchn to /dev/evtchn as this is where udev
creates the device entry. /dev/xen was the location that we used under
devfs. In some of the tools, we were creating /dev/xen/evtchn if it did not
already exist. We really should not do that.
We currently use the reserved major/minor range. Strictly, this is not right
as we may conflict with other software. Ideally, we should use random
major/minor numbers and optionally take the major/minor number as a module
parameter.
Signed-off-by: Anthony Liguori <aliguori@xxxxxxxxxx>
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf
freebsd-5.3-xen-sparse/i386-xen/include/evtchn.h
--- a/freebsd-5.3-xen-sparse/i386-xen/include/evtchn.h Wed Sep 7 21:35:05 2005
+++ b/freebsd-5.3-xen-sparse/i386-xen/include/evtchn.h Wed Sep 7 23:51:42 2005
@@ -96,10 +96,10 @@
#define PORT_EXCEPTION 0x8000
#define PORTIDX_MASK 0x7fff
-/* /dev/xen/evtchn resides at device number major=10, minor=200 */
+/* /dev/evtchn resides at device number major=10, minor=200 */
#define EVTCHN_MINOR 200
-/* /dev/xen/evtchn ioctls: */
+/* /dev/evtchn ioctls: */
/* EVTCHN_RESET: Clear and reinit the event buffer. Clear error condition. */
#define EVTCHN_RESET _IO('E', 1)
/* EVTCHN_BIND: Bind to the specified event-channel port. */
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf
freebsd-5.3-xen-sparse/i386-xen/xen/misc/evtchn_dev.c
--- a/freebsd-5.3-xen-sparse/i386-xen/xen/misc/evtchn_dev.c Wed Sep 7
21:35:05 2005
+++ b/freebsd-5.3-xen-sparse/i386-xen/xen/misc/evtchn_dev.c Wed Sep 7
23:51:42 2005
@@ -38,14 +38,14 @@
#ifdef linuxcrap
-/* NB. This must be shared amongst drivers if more things go in /dev/xen */
+/* NB. This must be shared amongst drivers if more things go in /dev */
static devfs_handle_t xen_dev_dir;
#endif
-/* Only one process may open /dev/xen/evtchn at any time. */
+/* Only one process may open /dev/evtchn at any time. */
static unsigned long evtchn_dev_inuse;
-/* Notification ring, accessed via /dev/xen/evtchn. */
+/* Notification ring, accessed via /dev/evtchn. */
#define EVTCHN_RING_SIZE 2048 /* 2048 16-bit entries */
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf
linux-2.6-xen-sparse/include/asm-xen/evtchn.h
--- a/linux-2.6-xen-sparse/include/asm-xen/evtchn.h Wed Sep 7 21:35:05 2005
+++ b/linux-2.6-xen-sparse/include/asm-xen/evtchn.h Wed Sep 7 23:51:42 2005
@@ -121,10 +121,10 @@
* CHARACTER-DEVICE DEFINITIONS
*/
-/* /dev/xen/evtchn resides at device number major=10, minor=201 */
+/* /dev/evtchn resides at device number major=10, minor=201 */
#define EVTCHN_MINOR 201
-/* /dev/xen/evtchn ioctls: */
+/* /dev/evtchn ioctls: */
/* EVTCHN_RESET: Clear and reinit the event buffer. Clear error condition. */
#define EVTCHN_RESET _IO('E', 1)
/* EVTCHN_BIND: Bind to teh specified event-channel port. */
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf tools/console/daemon/io.c
--- a/tools/console/daemon/io.c Wed Sep 7 21:35:05 2005
+++ b/tools/console/daemon/io.c Wed Sep 7 23:51:42 2005
@@ -252,7 +252,7 @@
close(dom->evtchn_fd);
/* Opening evtchn independently for each console is a bit
* wastefule, but that's how the code is structured... */
- dom->evtchn_fd = open("/dev/xen/evtchn", O_RDWR);
+ dom->evtchn_fd = open("/dev/evtchn", O_RDWR);
if (dom->evtchn_fd == -1) {
err = errno;
goto out;
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf tools/debugger/pdb/evtchn.ml
--- a/tools/debugger/pdb/evtchn.ml Wed Sep 7 21:35:05 2005
+++ b/tools/debugger/pdb/evtchn.ml Wed Sep 7 23:51:42 2005
@@ -7,7 +7,7 @@
* @version 1
*)
-let dev_name = "/dev/xen/evtchn" (* EVTCHN_DEV_NAME *)
+let dev_name = "/dev/evtchn" (* EVTCHN_DEV_NAME *)
let dev_major = 10 (* EVTCHN_DEV_MAJOR *)
let dev_minor = 201 (* EVTCHN_DEV_MINOR *)
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf tools/debugger/pdb/pdb_caml_evtchn.c
--- a/tools/debugger/pdb/pdb_caml_evtchn.c Wed Sep 7 21:35:05 2005
+++ b/tools/debugger/pdb/pdb_caml_evtchn.c Wed Sep 7 23:51:42 2005
@@ -32,24 +32,9 @@
int evtchn_fd;
struct stat st;
- /* Make sure any existing device file links to correct device. */
- if ( (lstat(filename, &st) != 0) ||
- !S_ISCHR(st.st_mode) ||
- (st.st_rdev != makedev(major, minor)) )
- {
- (void)unlink(filename);
- }
-
- reopen:
evtchn_fd = open(filename, O_RDWR);
if ( evtchn_fd == -1 )
{
- if ( (errno == ENOENT) &&
- ((mkdir("/dev/xen", 0755) == 0) || (errno == EEXIST)) &&
- (mknod(filename, S_IFCHR|0600, makedev(major,minor)) == 0) )
- {
- goto reopen;
- }
return -errno;
}
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf tools/debugger/pdb/pdb_xen.c
--- a/tools/debugger/pdb/pdb_xen.c Wed Sep 7 21:35:05 2005
+++ b/tools/debugger/pdb/pdb_xen.c Wed Sep 7 23:51:42 2005
@@ -44,7 +44,7 @@
#include <sys/ioctl.h>
-/* /dev/xen/evtchn ioctls */
+/* /dev/evtchn ioctls */
#define EVTCHN_RESET _IO('E', 1) /* clear & reinit buffer */
#define EVTCHN_BIND _IO('E', 2) /* bind to event channel */
#define EVTCHN_UNBIND _IO('E', 3) /* unbind from event channel */
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf tools/ioemu/target-i386-dm/helper2.c
--- a/tools/ioemu/target-i386-dm/helper2.c Wed Sep 7 21:35:05 2005
+++ b/tools/ioemu/target-i386-dm/helper2.c Wed Sep 7 23:51:42 2005
@@ -524,7 +524,7 @@
return NULL;
//use nonblock reading not polling, may change in future.
- evtchn_fd = open("/dev/xen/evtchn", O_RDWR|O_NONBLOCK);
+ evtchn_fd = open("/dev/evtchn", O_RDWR|O_NONBLOCK);
if (evtchn_fd == -1) {
perror("open");
return NULL;
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h Wed Sep 7 21:35:05 2005
+++ b/tools/libxc/xenctrl.h Wed Sep 7 23:51:42 2005
@@ -344,10 +344,10 @@
/**
* This function generates a notify event on a bound port.
*
- * Notifies can be read within Linux by opening /dev/xen/evtchn and reading
+ * Notifies can be read within Linux by opening /dev/evtchn and reading
* a 16 bit value. The result will be the port the event occurred on. When
* events occur, the port is masked until the 16 bit port value is written back
- * to the file. When /dev/xen/evtchn is opened, it has to be bound via an
+ * to the file. When /dev/evtchn is opened, it has to be bound via an
* ioctl to each port to listen on. The ioctl for binding is _IO('E', 2). The
* parameter is the port to listen on.
*
diff -r 10a3d4fbd9b4 -r b3cd1fd958bf tools/xenstore/xenstored_domain.c
--- a/tools/xenstore/xenstored_domain.c Wed Sep 7 21:35:05 2005
+++ b/tools/xenstore/xenstored_domain.c Wed Sep 7 23:51:42 2005
@@ -433,15 +433,11 @@
{
}
-#define EVTCHN_DEV_NAME "/dev/xen/evtchn"
-#define EVTCHN_DEV_MAJOR 10
-#define EVTCHN_DEV_MINOR 201
+#define EVTCHN_DEV_NAME "/dev/evtchn"
/* Returns the event channel handle. */
int domain_init(void)
{
- struct stat st;
-
/* The size of the ringbuffer: half a page minus head structure. */
ringbuf_datasize = getpagesize() / 2 - sizeof(struct ringbuf_head);
@@ -458,19 +454,8 @@
#ifdef TESTING
eventchn_fd = fake_open_eventchn();
#else
- /* Make sure any existing device file links to correct device. */
- if ((lstat(EVTCHN_DEV_NAME, &st) != 0) || !S_ISCHR(st.st_mode) ||
- (st.st_rdev != makedev(EVTCHN_DEV_MAJOR, EVTCHN_DEV_MINOR)))
- (void)unlink(EVTCHN_DEV_NAME);
-
- reopen:
eventchn_fd = open(EVTCHN_DEV_NAME, O_NONBLOCK|O_RDWR);
if (eventchn_fd == -1) {
- if ((errno == ENOENT) &&
- ((mkdir("/dev/xen", 0755) == 0) || (errno == EEXIST)) &&
- (mknod(EVTCHN_DEV_NAME, S_IFCHR|0600,
- makedev(EVTCHN_DEV_MAJOR, EVTCHN_DEV_MINOR)) == 0))
- goto reopen;
return -errno;
}
#endif
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