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Posted to dev@mina.apache.org by "Bobby Powers (JIRA)" <ji...@apache.org> on 2010/12/04 00:36:10 UTC
[jira] Commented: (SSHD-100) [sftp] open(2) w/ O_CREAT|O_TRUNC
works, but O_CREAT alone fails
[ https://issues.apache.org/jira/browse/SSHD-100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12966733#action_12966733 ]
Bobby Powers commented on SSHD-100:
-----------------------------------
Jira ate the debugging output (you might want to edit this message or view source for better indentation):
unique: 39, opcode: LOOKUP (1), nodeid: 1, insize: 45
LOOKUP /test
getattr /test
NODEID: 2
unique: 39, success, outsize: 144
unique: 40, opcode: LOOKUP (1), nodeid: 2, insize: 45
LOOKUP /test/abc2
getattr /test/abc2
unique: 40, error: -2 (No such file or directory), outsize: 16
unique: 41, opcode: CREATE (35), nodeid: 2, insize: 61
create flags: 0x8041 /test/abc2 0100644 umask=0022
unique: 41, error: -2 (No such file or directory), outsize: 16
unique: 42, opcode: LOOKUP (1), nodeid: 2, insize: 45
LOOKUP /test/abc3
getattr /test/abc3
unique: 42, error: -2 (No such file or directory), outsize: 16
unique: 43, opcode: CREATE (35), nodeid: 2, insize: 61
create flags: 0x8241 /test/abc3 0100644 umask=0022
create[25271456] flags: 0x8241 /test/abc3
fgetattr[25271456] /test/abc3
NODEID: 4
unique: 43, success, outsize: 160
unique: 44, opcode: FLUSH (25), nodeid: 4, insize: 64
flush[25271456]
unique: 44, success, outsize: 16
unique: 45, opcode: RELEASE (18), nodeid: 4, insize: 64
release[25271456] flags: 0x8001
unique: 45, success, outsize: 16
> [sftp] open(2) w/ O_CREAT|O_TRUNC works, but O_CREAT alone fails
> ----------------------------------------------------------------
>
> Key: SSHD-100
> URL: https://issues.apache.org/jira/browse/SSHD-100
> Project: MINA SSHD
> Issue Type: Bug
> Reporter: Bobby Powers
> Attachments: test.c
>
>
> Hi folks,
> I've mounted an sftp directory using sshfs like so:
> # sshfs -d -p 9022 bpowers@$SERVER_NAME:/bpowers /home/bpowers/Desktop/wintest
> The following sequences of commands shows the problem:
> root@bpowers-laptop:/home/bpowers/Desktop/wintest/test# rm -f bar
> root@bpowers-laptop:/home/bpowers/Desktop/wintest/test# touch bar
> touch: cannot touch `bar': No such file or directory
> root@bpowers-laptop:/home/bpowers/Desktop/wintest/test# echo "foo" > bar
> root@bpowers-laptop:/home/bpowers/Desktop/wintest/test# cat bar
> foo
> root@bpowers-laptop:/home/bpowers/Desktop/wintest/test# rm bar
> root@bpowers-laptop:/home/bpowers/Desktop/wintest/test# touch bar
> touch: cannot touch `bar': No such file or directory
> ...
> I've reduced it to a simple test case. Running the attached program gives me the following:
> root@bpowers-laptop:/home/bpowers/Desktop/wintest/test# /home/bpowers/creat_test
> /home/bpowers/Desktop/wintest/test/abc2: No such file or directory
> /home/bpowers/Desktop/wintest/test/abc3: worked.
> The difference is in the flags passed to open(2), and the consequence of this is that I cannot use cp or rsync to create any files over sftp (although they will update existing files).
> see attachment for the source of creat_test, which can be compiled with:
> $ gcc -o creat_test test.c
> and
> $ man 2 open
> for a description of the flags.
> Debugging output from sshfs shows the following:
> unique: 39, opcode: LOOKUP (1), nodeid: 1, insize: 45
> LOOKUP /test
> getattr /test
> NODEID: 2
> unique: 39, success, outsize: 144
> unique: 40, opcode: LOOKUP (1), nodeid: 2, insize: 45
> LOOKUP /test/abc2
> getattr /test/abc2
> unique: 40, error: -2 (No such file or directory), outsize: 16
> unique: 41, opcode: CREATE (35), nodeid: 2, insize: 61
> create flags: 0x8041 /test/abc2 0100644 umask=0022
> unique: 41, error: -2 (No such file or directory), outsize: 16
> unique: 42, opcode: LOOKUP (1), nodeid: 2, insize: 45
> LOOKUP /test/abc3
> getattr /test/abc3
> unique: 42, error: -2 (No such file or directory), outsize: 16
> unique: 43, opcode: CREATE (35), nodeid: 2, insize: 61
> create flags: 0x8241 /test/abc3 0100644 umask=0022
> create[25271456] flags: 0x8241 /test/abc3
> fgetattr[25271456] /test/abc3
> NODEID: 4
> unique: 43, success, outsize: 160
> unique: 44, opcode: FLUSH (25), nodeid: 4, insize: 64
> flush[25271456]
> unique: 44, success, outsize: 16
> unique: 45, opcode: RELEASE (18), nodeid: 4, insize: 64
> release[25271456] flags: 0x8001
> unique: 45, success, outsize: 16
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