Kir Kolyshkin bb934c6aca pkg/mount: implement/use filter for mountinfo parsing ... Functions `GetMounts()` and `parseMountTable()` return all the entries as read and parsed from /proc/self/mountinfo. In many cases the caller is only interested only one or a few entries, not all of them. One good example is `Mounted()` function, which looks for a specific entry only. Another example is `RecursiveUnmount()` which is only interested in mount under a specific path. This commit adds `filter` argument to `GetMounts()` to implement two things: 1. filter out entries a caller is not interested in 2. stop processing if a caller is found what it wanted `nil` can be passed to get a backward-compatible behavior, i.e. return all the entries. A few filters are implemented: - `PrefixFilter`: filters out all entries not under `prefix` - `SingleEntryFilter`: looks for a specific entry Finally, `Mounted()` is modified to use `SingleEntryFilter()`, and `RecursiveUnmount()` is using `PrefixFilter()`. Unit tests are added to check filters are working. [v2: ditch NoFilter, use nil] [v3: ditch GetMountsFiltered()] [v4: add unit test for filters] [v5: switch to gotestyourself] Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>		2018-04-19 14:48:09 -07:00
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local.go	pkg/mount: implement/use filter for mountinfo parsing	2018-04-19 14:48:09 -07:00
local_test.go	pkg/mount: implement/use filter for mountinfo parsing	2018-04-19 14:48:09 -07:00
local_unix.go	Add canonical import comment	2018-02-05 16:51:57 -05:00
local_windows.go	Add canonical import comment	2018-02-05 16:51:57 -05:00