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freezer_windows: make ReplaceFile call fall back to os.Rename.

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ReplaceFile fails because dst does not yet exist.
To remedy this, we fall back to os.Rename, which makes
everything work as it should.
This commit is contained in:
Mikkel Krautz 2018-01-13 21:29:27 +01:00
parent f53f5b7e00
commit 9922dab5fd
1 changed files with 10 additions and 2 deletions
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12
cmd/grumble/freeze_windows.go
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@ -8,6 +8,7 @@ import (
"github.com/golang/protobuf/proto"
"io/ioutil"
"mumble.info/grumble/pkg/replacefile"
"os"
"path/filepath"
"strconv"
)
@ -50,9 +51,16 @@ func (server *Server) freezeToFile() (err error) {
src := f.Name()
dst := filepath.Join(Args.DataDir, "servers", strconv.FormatInt(server.Id, 10), "main.fz")
backup := filepath.Join(Args.DataDir, "servers", strconv.FormatInt(server.Id, 10), "backup.fz")
err = replacefile.ReplaceFile(dst, src, backup, replacefile.Flag(0))
if err != nil {
return err
// If the dst file does not exist (as in, on first launch)
// fall back to os.Rename. ReplaceFile does not work if the
// dst file is not there.
if os.IsNotExist(err) {
err = os.Rename(src, dst)
if err != nil {
return err
}
}
return nil