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Old 04-22-2009, 03:36 AM   #1
arun.raj
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Registered: Apr 2009
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Is it possible to use file descriptor after main returns


Hello All,

I want to use the file descriptor opened by application_1 in another application_2, i.e

./application_1 :
main()
{
fd_1 = open( file );
return fd_1;
}

./application_2 fd_1
main()
{
ret = read( fd_1 );
return fd;
}

My concern is once application_1 main returns all open fds will be closed right ?

Thanks in advance .

Thanks,
 
Old 04-22-2009, 05:24 AM   #2
Sergei Steshenko
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Do you want to organize IPC (Inter-Process-Communications) ?
 
Old 04-22-2009, 06:10 AM   #3
bigearsbilly
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Registered: Mar 2004
Location: england
Distribution: FreeBSD, Debian, Mint, Puppy
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of course.
all files are closed on exit.
 
Old 04-23-2009, 06:24 AM   #4
jisjis
LQ Newbie
 
Registered: Apr 2009
Posts: 18

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Quote:
Originally Posted by arun.raj View Post
Hello All,

I want to use the file descriptor opened by application_1 in another application_2, i.e

./application_1 :
main()
{
fd_1 = open( file );
return fd_1;
}

./application_2 fd_1
main()
{
ret = read( fd_1 );
return fd;
}

My concern is once application_1 main returns all open fds will be closed right ?

Thanks in advance .

Thanks,


Why dont you write the fd_1 = open( file ); bit in your application_2 itself ?

Linux

Last edited by jisjis; 04-26-2009 at 04:42 AM.
 
  


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