Re: Issue with fcntl FD_CLOEXEC and execve

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Thanks a lot for the tip; I changed my fcntl call to the following: "fcntl(myfd, F_SETFD, FD_CLOEXEC)" and that fixed the problem.

I can now run and control external processes using the same API across most platforms!

I wish the man pages of fcntl could have been clearer about how you were supposed to apply the FD_CLOEXEC flag...

Yuri Edward

On 6/21/20 9:57 PM, Florian Weimer wrote:
* Yuri Edward:
  > This is the main class that performs fork, pipe, read, write and
     if (fcntl(commonfd[PIPE_WRITE], FD_CLOEXEC, 1) != 0)

That's not how fcntl works.  You need to use F_GETFD and F_SETFD to
set the FD_CLOEXEC flag.

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