On Wed, Jul 29, 2020 at 09:11:17PM +0100, Al Viro wrote:
> On Wed, Jul 22, 2020 at 11:12:19PM +0200, Jiri Olsa wrote:
>
> > +BPF_CALL_3(bpf_d_path, struct path *, path, char *, buf, u32, sz)
> > +{
> > + char *p = d_path(path, buf, sz - 1);
> > + int len;
> > +
> > + if (IS_ERR(p)) {
> > +
On Wed, Jul 29, 2020 at 09:17:40PM +0100, Al Viro wrote:
> On Wed, Jul 22, 2020 at 11:12:19PM +0200, Jiri Olsa wrote:
>
> > +BTF_SET_START(btf_whitelist_d_path)
> > +BTF_ID(func, vfs_truncate)
> > +BTF_ID(func, vfs_fallocate)
> > +BTF_ID(func, dentry_open)
> > +BTF_ID(func, vfs_getattr)
> > +BTF_I
On Wed, Jul 22, 2020 at 11:12:19PM +0200, Jiri Olsa wrote:
> +BTF_SET_START(btf_whitelist_d_path)
> +BTF_ID(func, vfs_truncate)
> +BTF_ID(func, vfs_fallocate)
> +BTF_ID(func, dentry_open)
> +BTF_ID(func, vfs_getattr)
> +BTF_ID(func, filp_close)
> +BTF_SET_END(btf_whitelist_d_path)
While we are at
On Wed, Jul 22, 2020 at 11:12:19PM +0200, Jiri Olsa wrote:
> +BPF_CALL_3(bpf_d_path, struct path *, path, char *, buf, u32, sz)
> +{
> + char *p = d_path(path, buf, sz - 1);
> + int len;
> +
> + if (IS_ERR(p)) {
> + len = PTR_ERR(p);
> + } else {
> + len = s
On Tue, Jul 28, 2020 at 12:47:03PM -0700, Andrii Nakryiko wrote:
> On Wed, Jul 22, 2020 at 2:14 PM Jiri Olsa wrote:
> >
> > Adding d_path helper function that returns full path for
> > given 'struct path' object, which needs to be the kernel
> > BTF 'path' object. The path is returned in buffer pr
On Wed, Jul 22, 2020 at 2:14 PM Jiri Olsa wrote:
>
> Adding d_path helper function that returns full path for
> given 'struct path' object, which needs to be the kernel
> BTF 'path' object. The path is returned in buffer provided
> 'buf' of size 'sz' and is zero terminated.
>
> bpf_d_path(&file-
Adding d_path helper function that returns full path for
given 'struct path' object, which needs to be the kernel
BTF 'path' object. The path is returned in buffer provided
'buf' of size 'sz' and is zero terminated.
bpf_d_path(&file->f_path, buf, size);
The helper calls directly d_path function
