How to get list of open posix shared memory segments in FreeBSD

问题

In linux i can get list of opened posix shared memory segments by getting /dev/shm directory listing.

How do i programmatically get list of all opened posix shared memory segments in FreeBSD? Assuming segments opened with shm_open and i don't know even a part of a name that was used as a first argument of shm_open.

回答1:

You can't. See the comment in /sys/kern/uipc_shm.c:

 * TODO:
 *
 * (2) Need to export data to a userland tool via a sysctl.  Should ipcs(1)
 *     and ipcrm(1) be expanded or should new tools to manage both POSIX
 *     kernel semaphores and POSIX shared memory be written?
 *
 * (3) Add support for this file type to fstat(1).

回答2:

You can use posixshmcontrol utility.

来源：https://stackoverflow.com/questions/12430351/how-to-get-list-of-open-posix-shared-memory-segments-in-freebsd