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cmd: upgrade: resolve symlink of the executable (#5891)

This commit is contained in:
Mohammed Al Sahaf 2023-10-14 00:19:22 +03:00 committed by Matthew Holt
parent ae5e2d96b7
commit 979c413f04
1 changed files with 10 additions and 0 deletions
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10
cmd/packagesfuncs.go
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@ -22,6 +22,7 @@ import (
"net/url"
"os"
"os/exec"
"path/filepath"
"reflect"
"runtime"
"runtime/debug"
@ -103,6 +104,15 @@ func upgradeBuild(pluginPkgs map[string]struct{}, fl Flags) (int, error) {
if err != nil {
return caddy.ExitCodeFailedStartup, fmt.Errorf("retrieving current executable permission bits: %v", err)
}
if thisExecStat.Mode()&os.ModeSymlink == os.ModeSymlink {
symSource := thisExecPath
// we are a symlink; resolve it
thisExecPath, err = filepath.EvalSymlinks(thisExecPath)
if err != nil {
return caddy.ExitCodeFailedStartup, fmt.Errorf("resolving current executable symlink: %v", err)
}
l.Info("this executable is a symlink", zap.String("source", symSource), zap.String("target", thisExecPath))
}
l.Info("this executable will be replaced", zap.String("path", thisExecPath))
// build the request URL to download this custom build