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semget and permission denied
- From: Marcello <piteko at yahoo dot com>
- To: cygwin at cygwin dot com
- Date: Wed, 28 Nov 2001 09:05:50 -0800 (PST)
- Subject: semget and permission denied
Hi,
I am working with semaphores. When I try to get a semaphore, I use
semget, but it returns me a value <0. The strerror is: Permission
denied
I tried in different ways, but it still doesn't work...
Can you help me?
--------------------------------------------------------------------
#include <sys/types.h>
#include <sys/ipc.h>
union semun {
int val;
struct semid_ds *buf;
ushort * array;
} argument;
#include <sys/sem.h>
#include <stdio.h>
#include <errno.h>
extern int errno;
main()
{
key_t id;
int c=19;
if (( id=semget((key_t)ftok("./semabinit.c", c), 1, 0666 |
IPC_CREAT))== -1)
printf("strerror says open failed: %s\n", strerror( errno ) );
return(id);
}
=====
c:\>ptk
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