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Commit Graph

8 Commits

Author SHA1 Message Date
copilot-swe-agent[bot]
46bc876085 Fix zombie SSH processes by storing the first session in sshClientExternal
The real issue was that sshClientExternal.session was never assigned,
so Wait() always returned nil without waiting for the SSH process to exit.
This caused zombie processes because the process was never reaped.

The fix:
- Store the first session created in NewSession() to s.session
- This allows Wait() to actually wait for the SSH process
- The sync.Once pattern is still useful for thread-safety
- Updated comments to reflect the correct behavior

Fixes the zombie process issue reported in rclone/rclone#8929

Co-authored-by: ncw <536803+ncw@users.noreply.github.com>
2025-10-31 11:54:04 +00:00
copilot-swe-agent[bot]
a58efc1544 Simplify Wait() implementation based on code review feedback
Remove unnecessary exited() check - we should always call cmd.Wait()
in the sync.Once block to properly reap the process and capture its
exit status. The sync.Once ensures it's only called once.

Co-authored-by: ncw <536803+ncw@users.noreply.github.com>
2025-10-30 18:03:48 +00:00
copilot-swe-agent[bot]
4f5efe2871 Fix zombie SSH processes with --sftp-ssh by ensuring Wait() is called only once
The issue was that cmd.Wait() was being called multiple times on the same
process - once in the background goroutine and once in Close(). This could
lead to zombie processes because only the first call to Wait() properly
reaps the process.

The fix uses sync.Once to ensure Wait() is only called once per SSH process,
storing and returning the result on subsequent calls.

Added tests to verify the fix works correctly.

Co-authored-by: ncw <536803+ncw@users.noreply.github.com>
2025-10-30 17:56:13 +00:00
Nick Craig-Wood
401cf81034 build: modernize Go usage
This commit modernizes Go usage. This was done with:

go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...

Then files needed to be `go fmt`ed and a few comments needed to be
restored.

The modernizations include replacing

- if/else conditional assignment by a call to the built-in min or max functions added in go1.21
- sort.Slice(x, func(i, j int) bool) { return s[i] < s[j] } by a call to slices.Sort(s), added in go1.21
- interface{} by the 'any' type added in go1.18
- append([]T(nil), s...) by slices.Clone(s) or slices.Concat(s), added in go1.21
- loop around an m[k]=v map update by a call to one of the Collect, Copy, Clone, or Insert functions from the maps package, added in go1.21
- []byte(fmt.Sprintf...) by fmt.Appendf(nil, ...), added in go1.19
- append(s[:i], s[i+1]...) by slices.Delete(s, i, i+1), added in go1.21
- a 3-clause for i := 0; i < n; i++ {} loop by for i := range n {}, added in go1.22
2025-02-28 11:31:14 +00:00
albertony
68bf6aa584 build: remove build constraint syntax for go 1.16 and older 2024-04-18 16:53:55 +02:00
Nick Craig-Wood
da244a3709 ssh: shorten wait delay for external ssh binaries now that we are using go1.20
Now we are guaranteed to have go1.20 or later we can use the WaitDelay
flag when running external ssh binaries.
2024-01-15 16:22:07 +00:00
Nick Craig-Wood
a83fec756b build: fix lint errors when re-enabling revive var-naming 2023-08-29 13:03:49 +01:00
Nick Craig-Wood
10449c86a4 sftp: add --sftp-ssh to specify an external ssh binary to use
This allows using an external ssh binary instead of the built in ssh
library for making SFTP connections.

This makes another integration test target TestSFTPRcloneSSH:

Fixes #7012
2023-07-28 10:29:02 +01:00