On Thu, 14 Dec 2006 14:03:28 +0100
Silviu Craciunas <[EMAIL PROTECTED]> wrote:
> On Wed, 2006-12-13 at 15:53 -0800, Stephen Hemminger wrote:
> > The connection between file and network device is through many
> > layers and there is no direct binding. It could be 0 to N interfaces
> > and even be d
On Wed, 2006-12-13 at 15:53 -0800, Stephen Hemminger wrote:
> The connection between file and network device is through many
> layers and there is no direct binding. It could be 0 to N interfaces
> and even be data dependent.
you mean protocol dependent? yes,it goes trough the layer of the vfs bu
On Wed, 13 Dec 2006 20:19:51 +0100 (MET)
Jan Engelhardt <[EMAIL PROTECTED]> wrote:
>
> >in fs/read_write.c, the vfs_read function does:
> >
> >file->f_op->read(file, buf, count, pos);
> >
> >after this call is it possible to determine where the
> >data is coming from?
> >e.g., the first hard disk
>in fs/read_write.c, the vfs_read function does:
>
>file->f_op->read(file, buf, count, pos);
>
>after this call is it possible to determine where the
>data is coming from?
>e.g., the first hard disk, a pipe or from a socket.
For hard disks:
file->f_dentry->d_inode->d_sb->s_bdev gives you the bl
On Wed, 2006-12-13 at 12:03 +0100, Jan Engelhardt wrote:
> >> >thanks for the reply, the block device can be determined with the major
> >> >and minor numbers , what I would be more interested in is if one can get
> >> >the net_device struct from the file struct
> >>
> >> Just how are you supposed
>> >thanks for the reply, the block device can be determined with the major
>> >and minor numbers , what I would be more interested in is if one can get
>> >the net_device struct from the file struct
>>
>> Just how are you supposed to match files and network devices?
>>
>
>from the struct file y
On Wed, 2006-12-13 at 10:59 +0100, Jan Engelhardt wrote:
> >thanks for the reply, the block device can be determined with the major
> >and minor numbers , what I would be more interested in is if one can get
> >the net_device struct from the file struct
>
> Just how are you supposed to match files
>thanks for the reply, the block device can be determined with the major
>and minor numbers , what I would be more interested in is if one can get
>the net_device struct from the file struct
Just how are you supposed to match files and network devices?
-`J'
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On Mon, 2006-12-11 at 19:34 +0100, Brice Goglin wrote:
> Silviu Craciunas wrote:
> > quick question for the gurus.. is it possible to determine the hardware
> > device from a file struct during read/write system call. For example in
> > fs/read_write.c when doing a vfs_read.
> >
>
> file->f_d
Silviu Craciunas wrote:
> quick question for the gurus.. is it possible to determine the hardware
> device from a file struct during read/write system call. For example in
> fs/read_write.c when doing a vfs_read.
>
file->f_dentry->d_inode gives you the inode. If the inode is on top of a
block
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