fork() , fopen() child and parent write the same file?

Question

0.00/5 (No votes)

See more:

is there anyone can tell me how can I write to the same file opened by parent and child?

example:

int main()
{
   pid_t pid ;
   FILE *inp = fopen("test.log","w");

   pid = fork();

   if(pid == 0)
      writeFile(inp);
   else
      writeFile(inp);
}

Posted 23-Apr-13 21:15pm

Sabri M

Updated 23-Apr-13 21:16pm

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Answer 1 · 2013-04-23T21:27:00

Solution 1

In priciple you can, but that's 'the recipe to disaster' according to Multiple processes write to the same file (C)[^].

Posted 23-Apr-13 21:27pm

CPallini

Comments

[no name] 24-Apr-13 3:52am

You advice me to use write or fwrite?

CPallini 24-Apr-13 4:00am

I advice you to NOT write to the same file from the two different processes.

[no name] 24-Apr-13 5:26am

Can I open two different files for two process?

CPallini 24-Apr-13 6:02am

Of course.

[no name] 24-Apr-13 9:10am

Thanks I built a new one..