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57f8cf9cd4
Spawning subprocesses is finicky, and the correct way to do it depends on the current process state which we have no control of. Signal masks, handlers, limits, scheduling and open file descriptors are a few examples of things that inadvertently get inherited and cause issues for either the parent or the child. We introduced a temporary workaround against common issues by clearing signal masks and signal handlers known to cause issues for Xwayland, but this was only a bandaid. Introduce xwayland_spawn_func_t, which allows the compositor to specify an implementation of a process spawner that will be used to launch Xwayland whenever needed. This spawner can then do any cleanup and accounting as the compositor sees fit. The spawner takes 4 arguments: The path to Xwayland, the arguments we have constructed for Xwayland, the environment variables that must be set for Xwayland, and the file descriptors that must have CLOEXEC cleared after fork but before exec to be correctly inherited by Xwayland. A default implementation is provided both for convenience and as a sample for implementers to look at. |
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| .. | ||
| backend | ||
| interfaces | ||
| render | ||
| types | ||
| util | ||
| xwayland | ||
| backend.h | ||
| config.h.in | ||
| meson.build | ||
| version.h.in | ||
| xcursor.h | ||
| xwayland.h | ||