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https://github.com/rclone/rclone.git
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caf5dd9d5e
Before this change we waited until until the timeout to check the
daemon was alive.
Now we check it every 100ms like we do the mount status.
This also fixes compiling on all platforms which was broken by the
previous change
9bfbf2a4a mount: fix macOS not noticing errors with --daemon
See: https://forum.rclone.org/t/rclone-mount-daemon-exits-successfully-even-when-mount-fails/43146
80 lines
2.0 KiB
Go
80 lines
2.0 KiB
Go
//go:build linux
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// +build linux
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package mountlib
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import (
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"fmt"
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"path/filepath"
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"strings"
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"github.com/moby/sys/mountinfo"
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)
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// CheckMountEmpty checks if folder is not already a mountpoint.
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// On Linux we use the OS-specific /proc/self/mountinfo API so the check won't access the path.
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// Directories marked as "mounted" by autofs are considered not mounted.
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func CheckMountEmpty(mountpoint string) error {
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const msg = "directory already mounted, use --allow-non-empty to mount anyway: %s"
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mountpointAbs, err := filepath.Abs(mountpoint)
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if err != nil {
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return fmt.Errorf("cannot get absolute path: %s: %w", mountpoint, err)
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}
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infos, err := mountinfo.GetMounts(mountinfo.SingleEntryFilter(mountpointAbs))
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if err != nil {
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return fmt.Errorf("cannot get mounts: %w", err)
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}
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foundAutofs := false
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for _, info := range infos {
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if info.FSType != "autofs" {
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return fmt.Errorf(msg, mountpointAbs)
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}
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foundAutofs = true
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}
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// It isn't safe to list an autofs in the middle of mounting
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if foundAutofs {
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return nil
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}
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return checkMountEmpty(mountpoint)
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}
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// singleEntryFilter looks for a specific entry.
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//
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// It may appear more than once and we return all of them if so.
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func singleEntryFilter(mp string) mountinfo.FilterFunc {
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return func(m *mountinfo.Info) (skip, stop bool) {
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return m.Mountpoint != mp, false
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}
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}
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// CheckMountReady checks whether mountpoint is mounted by rclone.
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// Only mounts with type "rclone" or "fuse.rclone" count.
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func CheckMountReady(mountpoint string) error {
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const msg = "mount not ready: %s"
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mountpointAbs, err := filepath.Abs(mountpoint)
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if err != nil {
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return fmt.Errorf("cannot get absolute path: %s: %w", mountpoint, err)
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}
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infos, err := mountinfo.GetMounts(singleEntryFilter(mountpointAbs))
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if err != nil {
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return fmt.Errorf("cannot get mounts: %w", err)
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}
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for _, info := range infos {
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if strings.Contains(info.FSType, "rclone") {
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return nil
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}
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}
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return fmt.Errorf(msg, mountpointAbs)
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}
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// CanCheckMountReady is set if CheckMountReady is functional
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var CanCheckMountReady = true
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