Bug#230857: Preinst should rename old devpts.sh to mountkernfs
On Mon, 15 Mar 2004 23:35:36, Thomas Hood wrote:
> On Mon, 2004-03-15 at 22:43, Thomas Hood wrote:
> > The readlink program doesn't use the C Library realpath().
> > Check it out -- it uses its own xreadlink() and readlink()
> > functions.
> On checking the code myself I see that it actually uses
> canonicalize_file_name(). This function is defined in
> coreutils-5.0.91/lib/canonicalize.c but /bin/readlink as
> built in Debian actually uses the libc function of the same
> name. So you were right.
> > realpath() is also described as tolerating a missing final component.
> > We should test it to see if it works.
> I just tested it and it doesn't work. Specifically,
> realpath("/tmp/foo",NULL) returns NULL if /tmp/foo is a symlink
> to /tmp/bar. So there is indeed a bug either in the implementation
> or the documenation of realpath().
sysvinit_2.85-10 contains a conforming readlink program in
debian/readlink.c which is installed in /lib/init/readlink.
It's not optimized for speed (too many strcpy's etc - yes, I check
for buffer overflows) but I'm reasonably sure it is correct.