what's wrong with my programme

[vincent chan]

Hi All,

I wrote a programme to manage a block of shm about 1 or 2 months ago.It was
all right.But it broken down when I run it at today.I checked and found the
error was caused by the code as follow:

        key_t shm_key = ftok(SHM_IDENTIFY,0);
        if(shm_key == -1)
        {
                perror("ftok error");
                return -1;
        }

error info:
        ftok error: No such file or directory

I have no idea about it at all,I didn't change my code,totally.and this is
my ubuntu's version info:
        Linux version 2.6.20-16-generic (root at terranova) (gcc version 4.1.2
(Ubuntu 4.1.2-0ubuntu4))
        Ubuntu 7.04

I wonder if the reason is the update?

Regards,
Vincent
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