Re: [PATCH] d_ino considered harmful

From: Arnd Bergmann
Date: Wed Jun 16 2010 - 15:11:25 EST


On Wednesday 16 June 2010 20:59:13 Valerie Aurora wrote:
> @@ -91,7 +91,9 @@ static int fillonedir(void * __buf, const char * name, int namlen, loff_t offset
>
> if (buf->result)
> return -EINVAL;
> - d_ino = ino;
> + /* Use of d_ino without st_dev is always buggy. */
> + d_ino = 0;
> +
> if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
> buf->result = -EOVERFLOW;
> return -EOVERFLOW;

Isn't this just the path taken by sys_oldreaddir?

Glibc (at least on my box) translates all user calls to readdir into
sys_getdents or sys_getdents64, so I think you'd also need to change
filldir() and filldir64() for your testing.

Arnd
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