Heh, I was looking over http://www.gossamer-threads.com/lists/linux/kernel/103611 a little while ago :) The same question was asked 16 years ago. Apparently the answer then was that it was easier than fixing the code. Quoting Theodore Ts'o (tytso@xxxxxxx): > The fact that we need CAP_SYS_RAIO for FIBMAP is pretty silly, given > that FIEMAP does not require privileges --- and in fact the preferred > interface. Why not just simply drop the requirement for privileges > for FIBMAP? > > (Seth, Serge, this isn't a real objection to your patch; but the fact > that FIBMAP requires root has always been a bit silly, and this would > be a great opportunity to simplify things a bit.) > > - Ted > > > On Fri, Dec 04, 2015 at 01:11:43PM -0600, Serge E. Hallyn wrote: > > Quoting Seth Forshee (seth.forshee@xxxxxxxxxxxxx): > > > Signed-off-by: Seth Forshee <seth.forshee@xxxxxxxxxxxxx> > > > > Acked-by: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx> > > > > > --- > > > fs/ioctl.c | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > diff --git a/fs/ioctl.c b/fs/ioctl.c > > > index 5d01d2638ca5..45c371bed7ee 100644 > > > --- a/fs/ioctl.c > > > +++ b/fs/ioctl.c > > > @@ -55,7 +55,7 @@ static int ioctl_fibmap(struct file *filp, int __user *p) > > > /* do we support this mess? */ > > > if (!mapping->a_ops->bmap) > > > return -EINVAL; > > > - if (!capable(CAP_SYS_RAWIO)) > > > + if (!ns_capable(filp->f_inode->i_sb->s_user_ns, CAP_SYS_RAWIO)) > > > return -EPERM; > > > res = get_user(block, p); > > > if (res) > > > -- > > > 1.9.1 > > > > > > -- > > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > Please read the FAQ at http://www.tux.org/lkml/ > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
