Manipulates the "watch list" associated with an inotify instance.
Each item ("watch") in the watch list specifies the pathname of a file
or directory, along with some set of events that the kernel should
monitor for the file referred to by that pathname. Either creates a new
watch item, or modifies an existing watch. Each watch has a unique
"watch descriptor", which is returned by this function.
Manipulates the "watch list" associated with an inotify instance. Each item ("watch") in the watch list specifies the pathname of a file or directory, along with some set of events that the kernel should monitor for the file referred to by that pathname. Either creates a new watch item, or modifies an existing watch. Each watch has a unique "watch descriptor", which is returned by this function.