67e26be2d9
The public tree and its history contain only the listed paths. Earlier projection history remains preserved internally. Source-Sha: 913fde029b935671833254797f0f20f1eb9fabba Policy-Sha: 913fde029b935671833254797f0f20f1eb9fabba Tree-Digest: 180ae530c1058a2a5c89837bdce2d323ae83e669e38590ca72e75b8d92b7262f
55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package desktop
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import (
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"os"
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"strings"
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)
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// hasDesktopSession checks if a desktop session is available on Linux.
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// Looks for DISPLAY or WAYLAND_DISPLAY in the environment, which indicates
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// an X11 or Wayland session is active.
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func hasDesktopSession() bool {
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// Check standard environment variables.
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if os.Getenv("DISPLAY") != "" || os.Getenv("WAYLAND_DISPLAY") != "" {
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return true
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}
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// Fallback: scan /proc for a running desktop session (the agent service
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// may not inherit DISPLAY from systemd).
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return findDesktopSessionInProc()
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}
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// findDesktopSessionInProc scans /proc/*/environ for DISPLAY or WAYLAND_DISPLAY.
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// Returns true if any user process has a desktop session active.
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func findDesktopSessionInProc() bool {
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entries, err := os.ReadDir("/proc")
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if err != nil {
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return false
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}
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for _, entry := range entries {
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if !entry.IsDir() {
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continue
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}
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// Only check numeric (PID) directories.
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if entry.Name()[0] < '0' || entry.Name()[0] > '9' {
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continue
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}
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data, err := os.ReadFile("/proc/" + entry.Name() + "/environ")
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if err != nil {
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continue
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}
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for _, v := range strings.Split(string(data), "\x00") {
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if strings.HasPrefix(v, "DISPLAY=") && len(v) > 8 {
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return true
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}
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if strings.HasPrefix(v, "WAYLAND_DISPLAY=") && len(v) > 17 {
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return true
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}
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}
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}
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return false
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}
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