Hi:
I am facing a strange problem.
I have opened a file "File1" using fopen() and while processing the
records in the file in a loop, I have a call to access() to check
existence of "File2". The reason is to stop processing further records
when the file "File2" exists. But the access() call fails when the file
"File1" is open.
If I close "File1" before making a call to access() on "File2", then it
works. Why is this behavior?
Please help. And please excuse my C ignorance.
Regds..Shyam
16  1311  ps**********@ya hoo.com wrote: Hi:
I am facing a strange problem.
I have opened a file "File1" using fopen() and while processing the
records in the file in a loop, I have a call to access() to check
existence of "File2". The reason is to stop processing further records
when the file "File2" exists. But the access() call fails when the file
"File1" is open.
Did you check for the error? aceess() on failure should set errno.
See if you can find out something. Guessing won't take us any further.
If I close "File1" before making a call to access() on "File2", then it
works. Why is this behavior?
No idea! ps**********@ya hoo.com wrote:
I have opened a file "File1" using fopen() and while processing
the records in the file in a loop, I have a call to access() to
check existence of "File2". The reason is to stop processing
further records when the file "File2" exists. But the access()
call fails when the file "File1" is open.
If I close "File1" before making a call to access() on "File2",
then it works. Why is this behavior?
There is no such function as access() in standard C, so it must be
something you wrote yourself or provided by your system. This
makes the subject off-topic here. You can either provide the full
source of access(), together with your actual code, when we will be
able to comment on it, or you should find a newsgroup that deals
with your system.
If you want to post a followup via groups.google.c om, don't use the
broken "Reply" link at the bottom of the article. Click on "show
options" at the top of the article, then click on the "Reply" at
the bottom of the article headers.
--
Chuck F (cb********@yah oo.com) (cb********@wor ldnet.att.net)
Available for consulting/temporary embedded and systems.
<http://cbfalconer.home .att.net> USE worldnet address!
access() is an api available on Unix to determine accessibility of a
file. It is on all standard Unix flavors.
ps**********@ya hoo.com writes: I am facing a strange problem.
I have opened a file "File1" using fopen() and while processing the
records in the file in a loop, I have a call to access() to check
existence of "File2". The reason is to stop processing further records
when the file "File2" exists. But the access() call fails when the file
"File1" is open.
If I close "File1" before making a call to access() on "File2", then it
works. Why is this behavior?
access() is not defined by the C standard. Try comp.unix.progr ammer.
--
Keith Thompson (The_Other_Keit h) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this. ps**********@ya hoo.com wrote
(in article
<11************ *********@g43g2 000cwa.googlegr oups.com>): access() is an api available on Unix to determine accessibility of a
file. It is on all standard Unix flavors.
Then one of the comp.unix.* newsgroups is probably a good place
to start, huh?
--
Randy Howard (2reply remove FOOBAR)
Suman wrote: ps**********@ya hoo.com wrote:
Hi:
I am facing a strange problem.
I have opened a file "File1" using fopen() and while processing the
records in the file in a loop, I have a call to access() to check
existence of "File2". The reason is to stop processing further records
when the file "File2" exists. But the access() call fails when the file
"File1" is open.
Did you check for the error? aceess() on failure should set errno.
See if you can find out something. Guessing won't take us any further.
Also take this to a group where it is topical please. access() is not
part of the C standard and may behave completely differently on
different implementations . It might, for example, try to open a
connection to an Access database. If I close "File1" before making a call to access() on "File2", then it
works. Why is this behavior?
No idea!
At a guess there is some other problem with the code.
--
Flash Gordon
Living in interesting times.
Although my email address says spam, it is real and I read it.
On Fri, 26 Aug 2005 01:37:24 -0700, pshyamsunder wrote: access() is an api available on Unix to determine accessibility of a
file. It is on all standard Unix flavors.
However comp.lang.c is not for discussing Unix APIs, a good place for that
is comp.unix.progr ammer.
Lawrence
On Fri, 26 Aug 2005 00:17:32 -0700, pshyamsunder wrote: Hi:
I am facing a strange problem.
I have opened a file "File1" using fopen() and while processing the
records in the file in a loop, I have a call to access() to check
existence of "File2". The reason is to stop processing further records
when the file "File2" exists. But the access() call fails when the file
"File1" is open.
If I close "File1" before making a call to access() on "File2", then it
works. Why is this behavior?
First of all this is off-topic. And the second thing is your question is
too vague. You have not mentioned the error returned by access() call.
Please check man page, it contains a lot of information.
Please help. And please excuse my C ignorance.
Regds..Shyam
--
Hari
Suman wrote: ps**********@ya hoo.com wrote:
I have opened a file "File1" using fopen() and while processing
the records in the file in a loop, I have a call to access() to
check existence of "File2". The reason is to stop processing
further records when the file "File2" exists. But the access()
call fails when the file "File1" is open.
Did you check for the error? aceess() on failure should set errno.
See if you can find out something. Guessing won't take us any
further.
If I close "File1" before making a call to access() on "File2",
then it works. Why is this behavior?
No idea!
Please do not answer off-topic enquiries, other than to suggest an
appropriate newsgroup. One reason is that there is nobody here (in
principle) to criticize an off-topic reply content. Another is
that it clutters the newsgroup.
--
"If you want to post a followup via groups.google.c om, don't use
the broken "Reply" link at the bottom of the article. Click on
"show options" at the top of the article, then click on the
"Reply" at the bottom of the article headers." - Keith Thompson This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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