mirror of
https://github.com/octoleo/restic.git
synced 2024-12-24 20:00:21 +00:00
46 lines
1.7 KiB
Plaintext
46 lines
1.7 KiB
Plaintext
seqdiag {
|
|
// seqdiag -T svg -o doc/mount-osx.svg doc/mount-osx.seq
|
|
app;
|
|
fuse [label="bazil.org/fuse"];
|
|
wait [label="callMount\nhelper goroutine"];
|
|
mount_osxfusefs;
|
|
kernel;
|
|
mounts;
|
|
|
|
app -> fuse [label="Mount"];
|
|
fuse -> kernel [label="open /dev/osxfuseN"];
|
|
fuse -> mount_osxfusefs [label="spawn, pass fd"];
|
|
fuse -> wait [label="goroutine", note="blocks on cmd.Wait"];
|
|
app <-- fuse [label="Mount returns"];
|
|
|
|
mount_osxfusefs -> kernel [label="mount(2)"];
|
|
|
|
app -> fuse [label="fs.Serve"];
|
|
fuse => kernel [label="read /dev/osxfuseN fd", note="starts with InitRequest,\nalso seen before mount exits:\ntwo StatfsRequest calls"];
|
|
fuse => app [label="FS/Node/Handle methods"];
|
|
fuse => kernel [label="write /dev/osxfuseN fd"];
|
|
... repeat ...
|
|
|
|
kernel ->> mounts [label="mount is visible"];
|
|
mount_osxfusefs <-- kernel [label="mount(2) returns"];
|
|
wait <<-- mount_osxfusefs [diagonal, label="exit", leftnote="on OS X, successful exit\nhere means we finally know\nthe mount has happened\n(can't trust InitRequest,\nkernel might have timed out\nwaiting for InitResponse)"];
|
|
|
|
app <<-- wait [diagonal, label="mount is ready,\nclose Conn.Ready", rightnote="InitRequest and StatfsRequest\nmay or may not be seen\nbefore Conn.Ready,\ndepending on platform"];
|
|
|
|
... shutting down ...
|
|
app -> fuse [label="Unmount"];
|
|
fuse -> kernel [label="umount(2)"];
|
|
kernel <<-- mounts;
|
|
fuse <-- kernel;
|
|
app <-- fuse [label="Unmount returns"];
|
|
|
|
// actually triggers before above
|
|
fuse <<-- kernel [diagonal, label="/dev/osxfuseN EOF"];
|
|
app <-- fuse [label="fs.Serve returns"];
|
|
|
|
app -> fuse [label="conn.Close"];
|
|
fuse -> kernel [label="close /dev/osxfuseN"];
|
|
fuse <-- kernel;
|
|
app <-- fuse;
|
|
}
|