Hi Guys,
I am trying to get some xattr information from the READDIR procedure.
I dumped the XDR stream at the nfs4_decode_dirent function and I found
out that the first time I do an "ls" command, I could see that the RPC
packet returns the READDIR response bytestream for a single directory
entry (on Wireshark) but does not correspond to the data that I see on
the nfs4_decode_dirent's first 80 bytes. I could not see these first
80 bytes anywhere in the READDIR response and I guess the actual
bytestream for a directory entry got pushed by 80 bytes somehow when
it reached the nfs4_decode_dirent function.
I am using 3.4 kernel. I have added the following code to the
nfs4_decode_dirent after all the variable declarations:
int i;
printk("starting xdr dump\r\n");
for (i = 0; i < 128; i++) {
if ((i % 4) == 0)
printk("\r\n\t");
printk("%08x ", be32_to_cpu((unsigned long)xdr->p[i]));
}
I have the following dump:
[838540.022906] 00000001 00000000 00000001 00000001 // this
looks like junk
[838540.022909] 2e000000 00000001 00100000 00000008 // this
looks like junk
[838540.022911] 00000000 00220002 00000001 00000000 // this
looks like junk
[838540.022914] 00000002 00000002 2e2e0000 00000001 // this
looks like junk
[838540.022916] 00100000 00000008 00000000 00220002 // this
looks like junk
[838540.022918] 00000001 185e632d 4a524b2a 00000011 // this
looks like proper data, i.e. it shows my folder name and some
attributes
[838540.022921] 73656c69 6e75782d 74657374 73756974 // this
looks like proper data
[838540.022923] 65000000 00000003 0018091a 00b0a23a // ..
[838540.022926] 00020000 000000cc 00000002 27a61b50 // ..
[838540.022928] d1fbab35 00000000 00001000 00000000 ^M
[838540.022931] 00000000 00000000 00000000 00000000 ^M
[838540.022933] 00000010 01000101 00000000 00012200 ^M
[838540.022936] 704b90a3 00000000 00220100 000001ed ^M
[838540.022938] 00000006 00000005 36353533 34000000 ^M
[838540.022940] 00000005 36353533 34000000 00000000 ^M
[838540.022943] 00000000 00000000 00001000 00000000 ^M
Somehow, with this dump, the real data for decoding got pushed by 80
bytes. Any clues about this problem?
Thank you very much for your help!
Kind Regards,
Rodel
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