The linux kernel doesnt allow hard links to directories, SUS says its
implementation specific.
cramfs gives empty directories and 0 length files the same node it
makies it difficult to distinguish from hard links.
a directory into itself. It is harder to do this correctly
than it appears. Not trying at all seems a better compromise
for the time being, untill we can implement this correctly.
As Manuel points out, this is a flawed fix, and doesnt fix the
following:
mkdir -p cpa cpb cpc
cp -a cpa cpa/cpb/cpc
Attached what appears to be a more sane fix. Apply on top of previous.
Please confirm sanity.
I was adding -s/--symbolic-link support to busybox cp when I noticed a
bug with -r/-a. Test case:
mkdir -p test/out
cd test
busybox cp -a * out/
Will never return until we run out of open files or similar.
Coreutils cp on the other hand will error with "cannot copy a directory,
`out', into itself, `out'". Patch attached.
cp does not truncate existing destinations. That is, after
running
echo foo > foo
echo fubar > fubar
cp foo fubar
the contents of fubar are
foo
r
instead of
foo
archive_xread can be replaced with bb_full_read, and archive_copy_file
with bb_copyfd*
bb_copyfd is split into two functions bb_copyfd_size and bb_copyfd_eof,
they share a common backend.
Config.h and using gcc's -fno-builtin. There are probably other files
with the similar problems.
Also, if building against uClibc, don't include asm/unistd.h in syscalls.c
and module_syscalls.c.
