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cmd: upgrade: inherit the permissions of the original executable (#4160)

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This commit is contained in:
Mohammed Al Sahaf 2021-05-11 22:11:27 +00:00 committed by GitHub
parent dbe164d98a
commit 2aefe15686
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 1 deletions
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6
cmd/commandfuncs.go
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@ -577,6 +577,10 @@ func cmdUpgrade(_ Flags) (int, error) {
if err != nil {
return caddy.ExitCodeFailedStartup, fmt.Errorf("determining current executable path: %v", err)
}
thisExecStat, err := os.Stat(thisExecPath)
if err != nil {
return caddy.ExitCodeFailedStartup, fmt.Errorf("retrieving current executable permission bits: %v", err)
}
l.Info("this executable will be replaced", zap.String("path", thisExecPath))
// get the list of nonstandard plugins
@ -654,7 +658,7 @@ func cmdUpgrade(_ Flags) (int, error) {
// download the file; do this in a closure to close reliably before we execute it
writeFile := func() error {
destFile, err := os.OpenFile(thisExecPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0770)
destFile, err := os.OpenFile(thisExecPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, thisExecStat.Mode())
if err != nil {
return fmt.Errorf("unable to open destination file: %v", err)
}