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Groups > linux.debian.user > #241896

Re: Trying to setup obexd but Operation not permitted

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David Wright wrote:

> Because both tests are run by hand, that does make it easier to strace
> what's going on in more detail than the debug output. For example, the
> open's flags are listed.

I forgot to mention that home is actually a link to home-lisa which is the
mount point for the NFS share.

I now used strace
writev(2, [{iov_base="obexd[23074]: PUT(0x2), <unknown"..., iov_len=39},
{iov_base="\n", iov_len=1}], 2) = 40
sendto(3, "<31>Nov  5 18:04:33 obexd[23074]"..., 59, MSG_NOSIGNAL, NULL, 0)
= 59
openat(AT_FDCWD, "/home/user/Downloads/20211105_090338.jpg", O_WRONLY
O_CREAT|O_TRUNC, 0600) = 8
fstat(8, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
lstat("/home", {st_mode=S_IFLNK|0777, st_size=10, ...}) = 0
readlink("/home", "home-lisa/", 4095)   = 10
lstat("/home-lisa", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/home-lisa/user", {st_mode=S_IFDIR|0755, st_size=20480, ...}) = 0
lstat("/home-lisa/user/Downloads", {st_mode=S_IFDIR|0700,
st_size=4096, ...}) = 0
lstat("/home-lisa/user/Downloads/20211105_090338.jpg", {st_mode=S_IFREG
0600, st_size=0, ...}) = 0
close(8)                                = 0
getpid()                                = 23074
writev(2, [{iov_base="obexd[23074]: open(/home/user"..., iov_len=92},
{iov_base="\n", iov_len=1}], 2) = 93
sendto(3, "<27>Nov  5 18:04:33 obexd[23074]"..., 112, MSG_NOSIGNAL, NULL, 0)
= 112
getpid()                                = 23074
writev(2, [{iov_base="obexd[23074]: PUT(0x2), Forbidde"..., iov_len=39},
{iov_base="\n", iov_len=1}], 2) = 40

so you see it resolves the link, but then fails with Forbidden.

Now I conducted the same test after createing a symlink to the local
directory (thus exclude NFS as root for the problem)

The result is the same
sendto(3, "<31>Nov  5 18:22:28 obexd[23364]"..., 59, MSG_NOSIGNAL, NULL, 0)
= 59
openat(AT_FDCWD, "/data/local/Downloads.test/20211105_090338.jpg", O_WRONLY
O_CREAT|O_TRUNC, 0600) = 8
fstat(8, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
lstat("/data", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/data/local", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/data/local/Downloads.test", {st_mode=S_IFLNK|0777, st_size=10, ...})
= 0
readlink("/data/local/Downloads.test", "Downloads/", 4095) = 10
lstat("/data/local/Downloads", {st_mode=S_IFDIR|0700, st_size=4096, ...}) =

0
lstat("/data/local/Downloads/20211105_090338.jpg", {st_mode=S_IFREG|0600,
st_size=0, ...}) = 0
close(8)                                = 0
getpid()                                = 23364
writev(2, [{iov_base="obexd[23364]: open(/data/local/D"..., iov_len=95},
{iov_base="\n", iov_len=1}], 2) = 96
sendto(3, "<27>Nov  5 18:22:28 obexd[23364]"..., 115, MSG_NOSIGNAL, NULL, 0)
= 115
getpid()                                = 23364
writev(2, [{iov_base="obexd[23364]: PUT(0x2), Forbidde"..., iov_len=39},
{iov_base="\n", iov_len=1}], 2) = 40
sendto(3, "<31>Nov  5 18:22:28 obexd[23364]"..., 59, MSG_NOSIGNAL, NULL, 0)
= 59

Conclusion: the problem is related to the directory link in the path and to
me it looks like a problem in obexd

How do you see this?

-- 
FCD6 3719 0FFB F1BF 38EA 4727 5348 5F1F DCFE BCB0

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Thread

Trying to setup obexd but Operation not permitted deloptes <emanoil.kotsev@deloptes.org> - 2021-11-04 17:50 +0100
  Re: Trying to setup obexd but Operation not permitted Greg Wooledge <greg@wooledge.org> - 2021-11-04 18:10 +0100
    Re: Trying to setup obexd but Operation not permitted deloptes <emanoil.kotsev@deloptes.org> - 2021-11-04 19:40 +0100
      Re: Trying to setup obexd but Operation not permitted Burhan Hanoglu <burhanoglu@gmail.com> - 2021-11-04 20:50 +0100
        Re: Trying to setup obexd but Operation not permitted deloptes <emanoil.kotsev@deloptes.org> - 2021-11-05 09:50 +0100
          Re: Trying to setup obexd but Operation not permitted Greg Wooledge <greg@wooledge.org> - 2021-11-05 12:30 +0100
            Re: Trying to setup obexd but Operation not permitted deloptes <emanoil.kotsev@deloptes.org> - 2021-11-05 14:50 +0100
              Re: Trying to setup obexd but Operation not permitted Greg Wooledge <greg@wooledge.org> - 2021-11-05 16:10 +0100
                Re: Trying to setup obexd but Operation not permitted Greg Wooledge <greg@wooledge.org> - 2021-11-05 17:00 +0100
                Re: Trying to setup obexd but Operation not permitted David Wright <deblis@lionunicorn.co.uk> - 2021-11-05 17:10 +0100
                Re: Trying to setup obexd but Operation not permitted deloptes <emanoil.kotsev@deloptes.org> - 2021-11-05 18:30 +0100
                Re: Trying to setup obexd but Operation not permitted Greg Wooledge <greg@wooledge.org> - 2021-11-05 18:40 +0100
                Re: Trying to setup obexd but Operation not permitted deloptes <emanoil.kotsev@deloptes.org> - 2021-11-05 19:20 +0100
                Re: Trying to setup obexd but Operation not permitted deloptes <emanoil.kotsev@deloptes.org> - 2021-11-05 18:10 +0100
                Re: Trying to setup obexd but Operation not permitted Greg Wooledge <greg@wooledge.org> - 2021-11-05 18:20 +0100
                Re: Trying to setup obexd but Operation not permitted deloptes <emanoil.kotsev@deloptes.org> - 2021-11-05 19:10 +0100
                Re: Trying to setup obexd but Operation not permitted "Thomas Schmitt" <scdbackup@gmx.net> - 2021-11-05 19:10 +0100
                Re: Trying to setup obexd but Operation not permitted deloptes <emanoil.kotsev@deloptes.org> - 2021-11-05 19:30 +0100

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