perkeep/cmd/cammount/cammount.go

97 lines
2.3 KiB
Go

/*
Copyright 2011 Google Inc.
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 main
import (
"flag"
"fmt"
"log"
"os"
"os/signal"
"syscall"
"camlistore.org/pkg/blobref"
"camlistore.org/pkg/cacher"
"camlistore.org/pkg/client"
"camlistore.org/pkg/fs"
"camlistore.org/third_party/code.google.com/p/rsc/fuse"
)
func main() {
// Scans the arg list and sets up flags
debug := flag.Bool("debug", false, "print debugging messages.")
client.AddFlags()
flag.Parse()
errorf := func(msg string, args ...interface{}) {
fmt.Fprintf(os.Stderr, msg, args...)
os.Exit(2)
}
if n := flag.NArg(); n < 1 || n > 2 {
errorf("usage: cammount <mountpoint> [<root-blobref>]\n")
}
mountPoint := flag.Arg(0)
client := client.NewOrFail() // automatic from flags
diskCacheFetcher, err := cacher.NewDiskCache(client)
if err != nil {
errorf("Error setting up local disk cache: %v", err)
}
defer diskCacheFetcher.Clean()
var camfs *fs.CamliFileSystem
if flag.NArg() == 2 {
root := blobref.Parse(flag.Arg(1))
if root == nil {
errorf("Error parsing root blobref: %q\n", root)
}
var err error
camfs, err = fs.NewRootedCamliFileSystem(diskCacheFetcher, root)
if err != nil {
errorf("Error creating root with %v: %v", root, err)
}
} else {
camfs = fs.NewCamliFileSystem(client, diskCacheFetcher)
log.Printf("starting with fs %#v", camfs)
}
if *debug {
// TODO: set fs's logger
}
// This doesn't appear to work on OS X:
sigc := make(chan os.Signal, 1)
go func() {
log.Fatalf("Signal %s received, shutting down.", <-sigc)
}()
signal.Notify(sigc, syscall.SIGQUIT, syscall.SIGTERM)
conn, err := fuse.Mount(mountPoint)
if err != nil {
log.Fatalf("Mount: %v", err)
}
err = conn.Serve(camfs)
if err != nil {
log.Fatalf("Serve: %v", err)
}
log.Printf("fuse process ending.")
}