Re: Help creating file on IFS

I finally checked the IBM Manual for the Open file (Open) API for the
O_TEXT_CREAT and found this interesting info:
The call to open has a fifth argument (*text file creation conversion ID*),
which is to be interpreted as either a code page or CCSID, depending on
whether the O_CODEPAGE or O_CCSID was set.

If the O_TEXT_CREAT flag is specified, all of the following flags must also
be specified: O_CREAT, O_TEXTDATA, and either O_CODEPAGE or O_CCSID. If all
of these prerequisite flags are not specified when O_TEXT_CREAT is
specified, then the call to open will fail with error condition [EINVAL].

This flag indicates that the textual data read from or written to this file
will be converted between the CCSID specified or derived from the *text
file creation conversion ID* and the CCSID of the file. When data is read
from the file, it is converted from the CCSID of the file to the CCSID
specified or derived from the *text file creation conversion ID*. When data
is written to the file, it is converted to the CCSID of the file from the
CCSID specified or derived from the *text file creation conversion ID*.
The prototype that I had for the Open API did not have the fifth parm.
I added it and the file was created with no problems.

However, I now have a different issue:
After creating the file, I wrote 2 records using the Write API and then
closed the file.
When using the WRKLNK command on the i to view the file, I can see the data.
The file attributes indicate the following:
Coded character set ID . . . . . . . . : 1252
Size of object data in bytes . . . . . : 100
Allocated size of object . . . . . . . : 8192
File format . . . . . . . . . . . . . : *TYPE2

When I map a network drive from my PC (XP Pro), I see the file, but can not
open it.
When I look at the properties for the file, it shows 0 bytes for the file
size.
The file name is I123456_0.csv.

Any suggestions anyone?



On Mon, Jun 18, 2012 at 12:09 PM, Dennis <iseries@xxxxxxxxxxxx> wrote:

If O_TEXT_CREAT happens to be the sum of O_TEXT and O_CREAT, then your
flags field will contain invalid (or at least incorrect) information.

It's usually best to avoid addition of flags, in favor of bit-logic ("or"
in this case). But I'm guessing here. I can say that the flags look a lot
like flags I use for similar function, with the exception that I don't have
O_TEXT_CREAT in my header.


++
Dennis
++
"Experience is not what happens to a man; it is what a man does with what
happens to him."
-- Aldous Huxley




Sent from my Galaxy tablet phone. Please excuse my brevity.
For any grammatic/spelling errors, there is no excuse.
++


Jeff Young <jyoung0950@xxxxxxxxx> wrote:

The value for FileDs is -1
The value for errno is 3021
The value for sterrno is The value specified for the argument is not
correct.


I am sure that one of the values in the Open statement is not correct, but
can not determine which one it is.


On Mon, Jun 18, 2012 at 10:15 AM, Dennis <iseries@xxxxxxxxxxxx> wrote:

No strerror valu returned? That is strange.

May we see the test that tells you that open() failed?
++
Dennis
++


Sent from my Galaxy tablet phone. Please excuse my brevity.
For any grammatic/spelling errors, there is no excuse.
++


Jeff Young <jyoung0950@xxxxxxxxx> wrote:

All,
I have a program that is attempting to create a file on the IFS.
I am using the IFSIO_H copybook from Scotts IFS book for the prototypes.
The snippet of code below is failing on the open.
<snip>

D IFS_File_Name S 50A

D FileDs S 10I 0

D RC S 10I 0

D Bytes_Loaded S 10I 0

D Msg S 256A Based(p_Msg)

D Test_Data S 1350A

D

// Prototypes for IFS Processing

/Copy QCopyBks,IFSIO_H

/copy QCopyBks,ERRNO_H

/Free

Test_Data = '123456179 THIS IS A TEST ITEM,213123434 THIS IS ANOTHER';

// Create file on IFS

IFS_File_Name = '/excel/xml/I' +

'12456' +

'_' +

'0' +

'.csv';

FileDs = Open(IFS_File_Name // Path & File Nmae

: O_CREAT + // Create File

O_WRONLY + // Write Only

O_CCSID + // Use Code Page

O_TEXTDATA + // Text Data

O_TEXT_CREAT // Create File

: S_IRWXU // Owner has ALL Auth

: 1252 // PC Code Page

);

p_ErrNo = sys_errno;

p_Msg = strerror (errno);
</snip>
The value received for the error message text is

--
Jeff Young
Sr. Programmer Analyst
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Sr. Programmer Analyst
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