FreeBSD 8.x changes in shm_open

[ssanders47]

Did something change in fbsd 8.x shm_open() ?

Prior to now, shm_open() created an entry in the file system so code like:

shm_open( "/tmp/shmfile" , O_CREAT | O_EXCL| O_RDWR , 0777 );

would create the file "/tmp/shmfile".

Under fbsd 8.[0-1], I'm not seeing the entry in the file system. I've attached a simple producer/consumer test.

Thanks.

 

[SirDice]

HISTORY
The shm_open() and shm_unlink() functions first appeared in FreeBSD 4.3. The functions were reimplemented as system calls using shared memory objects directly rather than files in FreeBSD 7.0.

From shm_open(2).

 

[ssanders47]

Thanks for the quick response.