Date: Sat, 27 Nov 2010 17:07:15 -0200 From: "Carlos A. M. dos Santos" <unixmania@gmail.com> To: Dimitry Andric <dim@freebsd.org> Cc: FreeBSD-Hackers <freebsd-hackers@freebsd.org>, d@delphij.net Subject: Re: Is it possible to have file removed upon process exit? Message-ID: <AANLkTikH_uD1-yUe6KTufBvs9zRdQ%2BiMVQWcavBYRXU9@mail.gmail.com> In-Reply-To: <4CF13D7A.4060904@FreeBSD.org> References: <4CEEC3BD.3080204@delphij.net> <4CF13D7A.4060904@FreeBSD.org>
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On Sat, Nov 27, 2010 at 3:18 PM, Dimitry Andric <dim@freebsd.org> wrote:
> On 2010-11-25 21:14, Xin LI wrote:
>>
>> For certain applications it is sometimes desirable to (e.g. for unix
>> domain sockets) have file removed when the process quit, regardless
>> whether the process is quit cleanly. Is there a clean way to do this?
>
> Maybe your process could be the child of a parent which cleans up
> afterwards? (This is an analogy from real life. ;)
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
static char filename[] = "/tmp/tmpfXXXXXX";
static int fd = 0;
int main(void) {
if ((fd = mkstemp(filename)) >= 0) {
pid_t pid;
if ((pid = fork()) > 0) {
/* parent */
wait(NULL);
printf("unlinking '%s'\n", filename);
unlink(filename);
return EXIT_SUCCESS;
} else {
/* child */
printf("file name is '%s'\n", filename);
sleep(10);
abort();
}
}
return EXIT_FAILURE;
}
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