Re: weird bash autocomplete issue

Kay Sievers
2008-12-16T21:41:09Z

On Tue, Dec 16, 2008 at 21:46, <devzero@web.de> wrote:
>> On Tue, Dec 16, 2008 at 20:37, Roland <devzero@web.de> wrote:
>> > i have come across a weird autocomplete issue i assume it is related to
>> > btrfs.
>> >
>> > let`s have some dirs:
>> >
>> > /non-btrfs-mount
>> > ./linux
>> > ./testdir
>> >
>> > /brtfs-mount
>> > ./linux
>> > ./testdir
>> >
>> > now, if i do "cd t<tab>" in /non-btrfs-mount, "t" autocompletes to "testdir"
>> > same for l<tab>inux - bash autocompletes as expected.
>> >
>> > now, the weird thing is, that on /btrfs-mount this behaves different.
>> >
>> > autocompletion for testdir works, but not for linux dir. weird.
>> >
>> > can someone reproduce this ?
>>
>> Open another shell, find the bash process pid of the first shell with:
>> ps afx
>> and do:
>> strace -p <pid>
>> Go back to the first shell, hit <tab>, and the trace should show
>> what's going on. You see a significant difference there?
>
>
> ok, here we go (i hope i did not cut important parts).
> i don`t see the real issue, but i did another interesting finding - see below
>
>
> bad (cd l<tab>):
>
> open(".", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|O_CLOEXEC) = 3
> fstat64(3, {st_dev=makedev(0, 19), st_ino=256, st_mode=S_IFDIR|0555, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=8, st_size=18, st_atime=2008/12/16-21:32:38, st_mtime=2008/12/16-21:32:37, st_ctime=2008/12/16-21:32:37}) = 0
> getdents64(3, {{d_ino=256, d_off=2, d_type=DT_DIR, d_reclen=24, d_name="."} {d_ino=256, d_off=2, d_type=DT_DIR, d_reclen=24, d_name=".."} {d_ino=257, d_off=3, d_type=DT_DIR, d_reclen=24, d_name="test"} {d_ino=258, d_off=9223372036854775807, d_type=DT_DIR, d_reclen=32, d_name="linux"}}, 4096) = 104
> _llseek(3, 3, [3], SEEK_SET) = 0
> getdents64(3, {{d_ino=258, d_off=9223372036854775807, d_type=DT_DIR, d_reclen=32, d_name="linux"}}, 4096) = 32

On Tue, Dec 16, 2008 at 22:26, <devzero@web.de> wrote:
> i assume it has something to do with the large value for d_off of the last dirent ?

Looks like, 9223372036854775807 is just LLONG_MAX.

Kay