diff options
Diffstat (limited to 'cmd/removebinary_windows.go')
-rw-r--r-- | cmd/removebinary_windows.go | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/cmd/removebinary_windows.go b/cmd/removebinary_windows.go new file mode 100644 index 0000000..3d7ade5 --- /dev/null +++ b/cmd/removebinary_windows.go @@ -0,0 +1,36 @@ +// Copyright 2015 Matthew Holt and The Caddy Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package caddycmd + +import ( + "os" + "path/filepath" + "syscall" +) + +// removeCaddyBinary removes the Caddy binary at the given path. +// +// On Windows, this uses a syscall to indirectly remove the file, +// because otherwise we get an "Access is denied." error when trying +// to delete the binary while Caddy is still running and performing +// the upgrade. "cmd.exe /C" executes a command specified by the +// following arguments, i.e. "del" which will run as a separate process, +// which avoids the "Access is denied." error. +func removeCaddyBinary(path string) error { + var sI syscall.StartupInfo + var pI syscall.ProcessInformation + argv := syscall.StringToUTF16Ptr(filepath.Join(os.Getenv("windir"), "system32", "cmd.exe") + " /C del " + path) + return syscall.CreateProcess(nil, argv, nil, nil, true, 0, nil, nil, &sI, &pI) +} |