J Duff wrote:
> I want to obtain status information for a disk using C code from within the
> OpenSolaris kernel. What function do I use?
>
> I can get the information using the command line by entering “stat
> /dev/dsk/c4t10d0s0”. So, I tried the following C code:
>
> /* The include below should have angle brackets, but */
> /* they caused the included text to be stripped in this post??? */
> #include sys/stat.h
> …
> struct stat fstatus;
> int rc = stat(“/dev/c4t10d0s0”, &fstatus);
>
> When I build the code above using the nightly script, I receive the
> compilation message “warning: implicit function declaration: stat
> (E_NO_IMPLICIT_DECL_ALLOWED).”
>
> I really just want to obtain the disk’s device number (dev_t). Is there a
> better way to do this from within the kernel code?
>
In the kernel, its kind of tricky. The stat() function is available in
userland, but not the kernel. My guess is that you should investigate
the ldi interfaces in sys/sunldi.h, but without more information about
why you think you need the dev_t, its hard to be sure. (dev_t's are
supposed to be mostly a private implementation detail.)
-- Garrett
> Duff
>
>
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