On Tue, Sep 27, 2011 at 7:09 PM, Dan Bassett <dbass...@oreilly.com> wrote:
> I did some more digging after finding some more debugging flags for
> start_udev and I have more information today. After serializing udev's
> startup process, it looks like the boot process always hangs in the same
> spot. During the processing of the persistent storage rules that ship with
> udev, the following rule is encountered:
>
> KERNEL!="sr*", IMPORT{program}="/sbin/blkid -o udev -p $tempnode"
>
> This results in /sbin/blkid being run for ubd0/a as such:
>
> util_run_program: '/sbin/blkid -o udev -p /dev/.tmp-block-98:0' started
The attached patch should fix the issue.
Please confirm. :-)
--
Thanks,
//richard
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 620f5b7..0491e40 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -513,8 +513,37 @@ __uml_exitcall(kill_io_thread);
static inline int ubd_file_size(struct ubd *ubd_dev, __u64 *size_out)
{
char *file;
+ int fd;
+ int err;
+
+ __u32 version;
+ __u32 align;
+ char *backing_file;
+ time_t mtime;
+ unsigned long long size;
+ int sector_size;
+ int bitmap_offset;
+
+ if (ubd_dev->file && ubd_dev->cow.file) {
+ file = ubd_dev->cow.file;
+
+ goto out;
+ }
- file = ubd_dev->cow.file ? ubd_dev->cow.file : ubd_dev->file;
+ fd = os_open_file(ubd_dev->file, global_openflags, 0);
+ if (fd < 0)
+ return fd;
+
+ err = read_cow_header(file_reader, &fd, &version, &backing_file, \
+ &mtime, &size, §or_size, &align, &bitmap_offset);
+ os_close_file(fd);
+
+ if(err == -EINVAL)
+ file = ubd_dev->file;
+ else
+ file = backing_file;
+
+out:
return os_file_size(file, size_out);
}
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