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stage1-fly/run: allow non absolute commands to be run #3845

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iaguis merged 1 commit into from
Nov 22, 2017
Merged

stage1-fly/run: allow non absolute commands to be run #3845

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11 changes: 11 additions & 0 deletions stage1_fly/run/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -460,6 +460,17 @@ func stage1(rp *stage1commontypes.RuntimePod) int {
return 254
}

// syscall.Exec takes a path and not a command name, so in the event that args[0] is a command name we have to convert it into a path
path, err := stage1initcommon.FindBinPath(p, &ra)
if err != nil {
log.PrintE(fmt.Sprintf("can't find the absolute executable for %q", args[0]), err)
return 254
}
if path != args[0] {
diag.Printf("converting args[0] (%q) into an absolute path: %q", args[0], path)
args[0] = path
}

diag.Printf("chroot to %q", rfs)
if err := syscall.Chroot(rfs); err != nil {
log.PrintE("can't chroot", err)
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