Signed-off-by: Sebastiaan van Stijn <[email protected]>

mount: update github.com/moby/sys/mountinfo v0.5.0

Signed-off-by: Kathryn Baldauf <[email protected]>

Instead of copy/pasting the code to check individual mountedBy*
implementations, add a list and a loop to check them.

The only special thing is, we have to check if the name of the function
being tested is "mountedByStat", to skip erroring out on bind mounts.
Otherwise the code is the same.

Signed-off-by: Kir Kolyshkin <[email protected]>

Since commit 7a52162 Mount is not implemented on Darwin, so
mount() is left unused.

Also, mount errors are only used from mount(), and thus are not used on
Darwin.

This fixes a bunch of warnings from "unused" and "deadcode" lints.

Signed-off-by: Kir Kolyshkin <[email protected]>

mount: fix unused/deadcode warnings on Mac

Add lcow supported signals to windows signal map

Fixes: dbd468b
Signed-off-by: Kir Kolyshkin <[email protected]>

MountedFast is a method of detecting a mount point without reading
mountinfo from procfs. A caller can only trust the result if no error
and sure == true are returned. Otherwise, other methods (e.g. parsing
/proc/mounts) have to be used. If unsure, use Mounted instead (which
uses MountedFast, but falls back to parsing mountinfo if needed).

If a non-existent path is specified, an appropriate error (rather than
"not mounted") is returned. In case the caller is not interested in this
particular error, it should be handled separately using e.g.
errors.Is(err, os.ErrNotExist).

This function is only available on Linux. The implementation mostly
relies on openat2(2) syscall, available since Linux kernel v5.6.
On older kernels, this uses stat(2) syscall which can reliably
detect normal (but not bind) mounts.

Signed-off-by: Kir Kolyshkin <[email protected]>

1. Do not compare booleans to false and true.

2. Since there are only two values, no sense in printing the actual value.

Signed-off-by: Kir Kolyshkin <[email protected]>

For clarity.

Signed-off-by: Kir Kolyshkin <[email protected]>

Signed-off-by: Kir Kolyshkin <[email protected]>

Test both MountedFast and Mounted.

Signed-off-by: Kir Kolyshkin <[email protected]>

mountinfo: add MountedFast