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2021-09-05util/shm: add allocate_shm_file_pairSimon Ser
This function behaves like allocate_shm_file, except it also returns a read-only FD. This is useful to share the same segment of memory with many Wayland clients.
2018-11-09Use ftruncate to set shared memory object's sizesghctoma
The posix_fallocate function should only be used with regular files.
2018-11-08Force ftruncate for shared mem. objects on FreeBSDsghctoma
FreeBSD does not allow to use posix_fallocate on shared memory objects.
2018-10-28util: use shm_open for in-memory filesemersion
shm_open is a POSIX function creating an in-memory file. Using it simplifies the code and removes the dependency on XDG_RUNTIME_DIR. The only downside is that we need to generate a random name for the shm file.