🚀 go-pugleaf

El Wed, 01 Sep 1999 16:37:45 GMT, Colin Mahoney <cmahoney@readysoft.es> escribi�:
|I want to create a lock file while I open a file, process it, write
|out the new file then overwrite the old one with the new one.
|
|What's the standard way to do this? I have no previous experience with
|linux, so thanks for any help.
|
|Colin Mahoney

#include <stdio.h>
#include <unistd.h>

int main(){

status = fopen("/tmp/.lock","r"); 
if (status != NULL) // Check if lockfile already exist
    {
	fprintf(stderr,"Lock file already exist in /tmp/.lock\n");
	fclose(status);
	exit(1);
}
lock = fopen("/tmp/.lock","w"); // lockfile don't exist, create one
[HERE YOU OPEN YOUR FILE, PROCESS IT
, WRITE, ETC]
fclose(lock);
ulink("/tmp/.lock"); // Delete the lockfile 

}

For more references write on the shell "info libc" (without the quotes).
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