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fix: use ps for cross-platform daemon detection

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Replace Linux-specific /proc/<pid>/cmdline with ps command
for isGasTownDaemon() to work on macOS and Linux.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
gastown/crew/gus
2026-01-20 20:24:46 -08:00
committed by Steve Yegge
parent 6bfe61f796
commit b71188d0b4
1 changed files with 5 additions and 7 deletions
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12
internal/daemon/daemon.go
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@@ -1,7 +1,6 @@
package daemon package daemon
import ( import (
"bytes"
"context" "context"
"encoding/json" "encoding/json"
"fmt" "fmt"
@@ -722,17 +721,16 @@ func IsRunning(townRoot string) (bool, int, error) {
// isGasTownDaemon checks if a PID is actually a gt daemon run process. // isGasTownDaemon checks if a PID is actually a gt daemon run process.
// This prevents false positives from PID reuse. // This prevents false positives from PID reuse.
// Uses ps command for cross-platform compatibility (Linux, macOS).
func isGasTownDaemon(pid int) bool { func isGasTownDaemon(pid int) bool {
// Read /proc/<pid>/cmdline to verify process name // Use ps to get command for the PID (works on Linux and macOS)
cmdlineFile := fmt.Sprintf("/proc/%d/cmdline", pid) cmd := exec.Command("ps", "-p", strconv.Itoa(pid), "-o", "command=")
data, err := os.ReadFile(cmdlineFile) output, err := cmd.Output()
if err != nil { if err != nil {
return false return false
} }
// cmdline is null-separated, convert to space-separated cmdline := strings.TrimSpace(string(output))
cmdline := string(bytes.ReplaceAll(data, []byte{0}, []byte(" ")))
cmdline = strings.TrimSpace(cmdline)
// Check if it's "gt daemon run" or "/path/to/gt daemon run" // Check if it's "gt daemon run" or "/path/to/gt daemon run"
return strings.Contains(cmdline, "gt") && strings.Contains(cmdline, "daemon") && strings.Contains(cmdline, "run") return strings.Contains(cmdline, "gt") && strings.Contains(cmdline, "daemon") && strings.Contains(cmdline, "run")