On Mon, May 25, 2009 at 12:42 PM, Vipul Jain <[email protected]> wrote:
> Hi All,
>
> I am trying to learn adding entry in proc file system and currently
> using the the example given in
> Documentation/DocBook/procfs_example.c. I would like to make a
> entry in the proc file system that
> will print the struct timespec values on read i.e. cat . I am
> getting the following error on compilation
> and am confused as everything looks ok to me. I was wondering if
> you guys could please help me.
In the code, you are just printing a local variable without initializing it.
It can contain garbage of the stack and that is why gcc is cribbing.
static int proc_read_xtime(char *page, char **start,
off_t off, int count,
int *eof, void *data)
{
int len;
struct timespec tv;
len = sprintf(page, "xtime : tv_secs = %ld tv_nvsecs = %ld \n",
(long)tv.tv_sec, tv.tv_nsec);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
return len;
Thanks -
Manish
>
> /home/vipul/linux/ldd/test/procfs_example.c: In function
> ‘proc_read_xtime’:
> /home/vipul/linux/ldd/test/procfs_example.c:68: warning: ‘tv.tv_sec’
> is used uninitialized in this function
> /home/vipul/linux/ldd/test/procfs_example.c:68: warning: ‘tv.tv_nsec’
> is used uninitialized in this function
> Building modules, stage 2.
>
>
> Regards,
> Vipul.
>
--
Thanks -
Manish
