2015-09-03 19:27:07 +02:00
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package main
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import (
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2016-01-20 20:55:56 +01:00
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"encoding/json"
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2015-09-05 11:49:05 +02:00
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"fmt"
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2016-01-20 22:31:15 +01:00
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"log/syslog"
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2015-09-06 12:12:14 +02:00
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"os"
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2015-11-01 13:28:58 +01:00
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"os/exec"
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"os/signal"
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2015-09-06 12:12:14 +02:00
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"path/filepath"
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2015-09-16 19:35:40 +02:00
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"runtime"
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2015-10-04 14:36:20 +02:00
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"runtime/pprof"
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2016-05-11 23:36:57 +02:00
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"strconv"
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2016-06-04 14:24:48 +02:00
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"strings"
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2015-11-01 13:28:58 +01:00
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"syscall"
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2015-10-04 14:36:20 +02:00
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"time"
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2015-09-08 00:54:24 +02:00
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"github.com/hanwen/go-fuse/fuse"
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"github.com/hanwen/go-fuse/fuse/nodefs"
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"github.com/hanwen/go-fuse/fuse/pathfs"
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2016-02-06 19:20:54 +01:00
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"github.com/rfjakob/gocryptfs/internal/configfile"
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"github.com/rfjakob/gocryptfs/internal/contentenc"
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"github.com/rfjakob/gocryptfs/internal/cryptocore"
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2016-02-06 20:23:36 +01:00
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"github.com/rfjakob/gocryptfs/internal/fusefrontend"
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2016-08-29 22:05:39 +02:00
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"github.com/rfjakob/gocryptfs/internal/fusefrontend_reverse"
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2016-06-15 22:43:31 +02:00
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"github.com/rfjakob/gocryptfs/internal/readpassword"
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2016-06-15 23:30:44 +02:00
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"github.com/rfjakob/gocryptfs/internal/tlog"
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2015-09-03 19:27:07 +02:00
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)
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2015-09-05 11:49:05 +02:00
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const (
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2015-09-08 23:09:28 +02:00
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// Exit codes
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2015-10-11 18:51:56 +02:00
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ERREXIT_USAGE = 1
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ERREXIT_MOUNT = 3
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ERREXIT_CIPHERDIR = 6
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ERREXIT_INIT = 7
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ERREXIT_LOADCONF = 8
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2015-10-11 18:33:28 +02:00
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ERREXIT_MOUNTPOINT = 10
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2015-09-05 11:49:05 +02:00
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)
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2016-07-03 16:49:42 +02:00
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const pleaseBuildBash = "[not set - please compile using ./build.bash]"
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// gocryptfs version according to git, set by build.bash
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var GitVersion = pleaseBuildBash
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// go-fuse library version, set by build.bash
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var GitVersionFuse = pleaseBuildBash
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// Unix timestamp, set by build.bash
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var BuildTime = "0"
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2015-11-01 13:55:35 +01:00
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2015-10-07 21:59:54 +02:00
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func usageText() {
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2015-11-14 21:25:10 +01:00
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printVersion()
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2016-06-05 14:26:16 +02:00
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fmt.Printf(`
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Usage: %s -init|-passwd [OPTIONS] CIPHERDIR
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or %s [OPTIONS] CIPHERDIR MOUNTPOINT
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Options:
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2016-06-15 23:30:44 +02:00
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`, tlog.ProgramName, tlog.ProgramName)
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2016-06-05 14:26:16 +02:00
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2015-11-09 23:11:38 +01:00
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flagSet.PrintDefaults()
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2015-10-07 21:59:54 +02:00
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}
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2015-11-14 21:25:10 +01:00
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// loadConfig - load the config file "filename", prompting the user for the password
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2016-02-06 19:20:54 +01:00
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func loadConfig(args *argContainer) (masterkey []byte, confFile *configfile.ConfFile) {
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2015-11-14 21:25:10 +01:00
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// Check if the file exists at all before prompting for a password
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2015-11-15 13:38:19 +01:00
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_, err := os.Stat(args.config)
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2015-11-14 21:25:10 +01:00
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if err != nil {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Printf("Config file not found: %v", err)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_LOADCONF)
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}
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2016-06-15 22:43:31 +02:00
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pw := readpassword.Once(args.extpass)
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2016-06-15 23:30:44 +02:00
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tlog.Info.Println("Decrypting master key")
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2016-02-06 19:20:54 +01:00
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masterkey, confFile, err = configfile.LoadConfFile(args.config, pw)
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2016-06-19 20:01:04 +02:00
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if err != nil {
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2016-06-16 23:23:09 +02:00
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tlog.Fatal.Println(err)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_LOADCONF)
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}
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return masterkey, confFile
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}
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// changePassword - change the password of config file "filename"
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2015-11-15 13:38:19 +01:00
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func changePassword(args *argContainer) {
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masterkey, confFile := loadConfig(args)
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2016-06-15 23:30:44 +02:00
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tlog.Info.Println("Please enter your new password.")
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2016-06-15 22:43:31 +02:00
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newPw := readpassword.Twice(args.extpass)
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2015-11-29 18:52:58 +01:00
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confFile.EncryptKey(masterkey, newPw, confFile.ScryptObject.LogN())
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2015-11-14 21:25:10 +01:00
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err := confFile.WriteFile()
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if err != nil {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Println(err)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_INIT)
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}
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2016-06-15 23:30:44 +02:00
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tlog.Info.Printf("Password changed.")
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2015-11-14 21:25:10 +01:00
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os.Exit(0)
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}
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2016-07-03 16:49:42 +02:00
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// printVersion prints a version string like this:
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// gocryptfs v0.12-36-ge021b9d-dirty; go-fuse a4c968c; 2016-07-03 go1.6.2
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2015-11-14 21:25:10 +01:00
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func printVersion() {
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2016-07-03 16:49:42 +02:00
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humanTime := "0000-00-00"
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if i, _ := strconv.ParseInt(BuildTime, 10, 64); i > 0 {
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t := time.Unix(i, 0).UTC()
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humanTime = fmt.Sprintf("%d-%02d-%02d", t.Year(), t.Month(), t.Day())
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}
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built := fmt.Sprintf("%s %s", humanTime, runtime.Version())
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2016-06-19 19:33:15 +02:00
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fmt.Printf("%s %s; go-fuse %s; %s\n",
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2016-07-03 16:49:42 +02:00
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tlog.ProgramName, GitVersion, GitVersionFuse, built)
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2015-11-14 21:25:10 +01:00
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}
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2015-11-09 23:11:38 +01:00
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func main() {
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runtime.GOMAXPROCS(4)
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2015-11-14 21:25:10 +01:00
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var err error
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2016-09-20 19:59:08 +02:00
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// Parse all command-line options (i.e. arguments starting with "-")
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// into "args". Path arguments are parsed below.
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args := parseCliOpts()
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2016-09-20 19:49:44 +02:00
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// Fork a child into the background if "-f" is not set AND we are mounting
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// a filesystem. The child will do all the work.
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2015-11-29 19:06:11 +01:00
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if !args.foreground && flagSet.NArg() == 2 {
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2016-09-20 19:49:44 +02:00
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ret := forkChild()
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os.Exit(ret)
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2015-11-14 21:25:10 +01:00
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}
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2016-05-11 23:36:57 +02:00
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if args.debug {
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2016-06-15 23:30:44 +02:00
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tlog.Debug.Enabled = true
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2016-05-11 23:36:57 +02:00
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}
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2015-11-14 21:25:10 +01:00
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// "-v"
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2015-11-02 23:08:51 +01:00
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if args.version {
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2016-06-15 23:30:44 +02:00
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tlog.Debug.Printf("openssl=%v\n", args.openssl)
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2016-06-19 19:33:15 +02:00
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tlog.Debug.Printf("on-disk format %d\n", contentenc.CurrentVersion)
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2015-11-14 21:25:10 +01:00
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printVersion()
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2015-11-01 13:55:35 +01:00
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os.Exit(0)
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}
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2016-01-31 18:09:39 +01:00
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if args.wpanic {
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2016-06-15 23:30:44 +02:00
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tlog.Warn.Wpanic = true
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tlog.Debug.Printf("Panicing on warnings")
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2016-01-31 18:09:39 +01:00
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}
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2015-11-14 21:25:10 +01:00
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// Every operation below requires CIPHERDIR. Check that we have it.
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if flagSet.NArg() >= 1 {
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args.cipherdir, _ = filepath.Abs(flagSet.Arg(0))
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2016-06-14 22:45:33 +02:00
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err = checkDir(args.cipherdir)
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2015-11-14 21:25:10 +01:00
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if err != nil {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Printf("Invalid cipherdir: %v", err)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_CIPHERDIR)
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}
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} else {
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usageText()
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os.Exit(ERREXIT_USAGE)
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}
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// "-q"
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2015-11-09 22:33:42 +01:00
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if args.quiet {
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2016-06-15 23:30:44 +02:00
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tlog.Info.Enabled = false
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2015-11-09 22:33:42 +01:00
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}
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2016-09-25 15:05:09 +02:00
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// "-reverse" implies "-gcmsiv"
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if args.reverse {
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args.gcmsiv = true
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}
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2015-11-14 21:25:10 +01:00
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// "-config"
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if args.config != "" {
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args.config, err = filepath.Abs(args.config)
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if err != nil {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Printf("Invalid \"-config\" setting: %v", err)
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2016-06-05 14:26:16 +02:00
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os.Exit(ERREXIT_INIT)
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2015-11-14 21:25:10 +01:00
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}
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2016-06-15 23:30:44 +02:00
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tlog.Info.Printf("Using config file at custom location %s", args.config)
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2016-08-29 22:05:39 +02:00
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} else if args.reverse {
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args.config = filepath.Join(args.cipherdir, configfile.ConfReverseName)
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2015-11-14 21:25:10 +01:00
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} else {
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2016-02-06 19:20:54 +01:00
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args.config = filepath.Join(args.cipherdir, configfile.ConfDefaultName)
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2015-10-11 18:02:48 +02:00
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}
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2015-11-14 21:25:10 +01:00
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// "-cpuprofile"
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2015-11-14 17:16:17 +01:00
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if args.cpuprofile != "" {
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2016-06-15 23:30:44 +02:00
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tlog.Info.Printf("Writing CPU profile to %s", args.cpuprofile)
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2016-04-10 21:29:42 +02:00
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var f *os.File
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f, err = os.Create(args.cpuprofile)
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2015-10-04 14:36:20 +02:00
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if err != nil {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Println(err)
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2015-09-18 22:14:07 +02:00
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os.Exit(ERREXIT_INIT)
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2015-10-04 14:36:20 +02:00
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}
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pprof.StartCPUProfile(f)
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defer pprof.StopCPUProfile()
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}
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2016-01-21 23:55:37 +01:00
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// "-memprofile"
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if args.memprofile != "" {
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2016-06-15 23:30:44 +02:00
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tlog.Info.Printf("Writing mem profile to %s", args.memprofile)
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2016-04-10 21:29:42 +02:00
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var f *os.File
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f, err = os.Create(args.memprofile)
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2016-01-21 23:55:37 +01:00
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if err != nil {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Println(err)
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2016-01-21 23:55:37 +01:00
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os.Exit(ERREXIT_INIT)
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}
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defer func() {
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pprof.WriteHeapProfile(f)
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f.Close()
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return
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}()
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}
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if args.cpuprofile != "" || args.memprofile != "" {
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2016-06-15 23:30:44 +02:00
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tlog.Info.Printf("Note: You must unmount gracefully, otherwise the profile file(s) will stay empty!\n")
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2016-01-21 23:55:37 +01:00
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}
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2015-11-14 21:25:10 +01:00
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// "-openssl"
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2015-11-02 23:08:51 +01:00
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if args.openssl == false {
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2016-06-15 23:30:44 +02:00
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tlog.Debug.Printf("OpenSSL disabled, using Go GCM")
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2016-05-11 23:36:57 +02:00
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} else {
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2016-06-15 23:30:44 +02:00
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tlog.Debug.Printf("OpenSSL enabled")
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2015-10-06 20:24:52 +02:00
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}
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2016-09-25 15:05:09 +02:00
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// Operation flags: -init or -passwd; otherwise: mount
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2015-11-14 21:25:10 +01:00
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// "-init"
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2015-11-02 23:08:51 +01:00
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if args.init {
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2015-11-14 21:25:10 +01:00
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if flagSet.NArg() > 1 {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Printf("Usage: %s -init [OPTIONS] CIPHERDIR", tlog.ProgramName)
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2015-09-13 17:55:07 +02:00
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os.Exit(ERREXIT_USAGE)
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}
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2015-11-14 21:25:10 +01:00
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initDir(&args) // does not return
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2015-10-11 18:33:28 +02:00
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}
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2015-11-14 21:25:10 +01:00
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// "-passwd"
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2015-11-02 23:08:51 +01:00
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if args.passwd {
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2015-11-14 21:25:10 +01:00
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if flagSet.NArg() > 1 {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Printf("Usage: %s -passwd [OPTIONS] CIPHERDIR", tlog.ProgramName)
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2015-10-11 18:33:28 +02:00
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os.Exit(ERREXIT_USAGE)
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}
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2015-11-15 13:38:19 +01:00
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changePassword(&args) // does not return
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2015-09-03 19:27:07 +02:00
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}
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2015-11-14 21:25:10 +01:00
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// Mount
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// Check mountpoint
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2015-11-29 19:06:11 +01:00
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if flagSet.NArg() != 2 {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Printf("Usage: %s [OPTIONS] CIPHERDIR MOUNTPOINT", tlog.ProgramName)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_USAGE)
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}
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args.mountpoint, err = filepath.Abs(flagSet.Arg(1))
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2015-09-09 19:32:59 +02:00
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if err != nil {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Printf("Invalid mountpoint: %v", err)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_MOUNTPOINT)
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2015-10-07 21:26:17 +02:00
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}
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2015-11-14 21:25:10 +01:00
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err = checkDirEmpty(args.mountpoint)
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if err != nil {
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2016-06-15 23:30:44 +02:00
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tlog.Fatal.Printf("Invalid mountpoint: %v", err)
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2015-11-14 21:25:10 +01:00
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os.Exit(ERREXIT_MOUNTPOINT)
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2015-11-03 00:00:13 +01:00
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}
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2015-11-14 21:25:10 +01:00
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// Get master key
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var masterkey []byte
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2016-02-06 19:20:54 +01:00
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var confFile *configfile.ConfFile
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2015-11-14 21:25:10 +01:00
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if args.masterkey != "" {
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// "-masterkey"
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2016-06-15 23:30:44 +02:00
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tlog.Info.Printf("Using explicit master key.")
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2015-11-14 21:25:10 +01:00
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masterkey = parseMasterKey(args.masterkey)
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2016-07-03 15:37:47 +02:00
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tlog.Info.Printf(tlog.ColorYellow +
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"THE MASTER KEY IS VISIBLE VIA \"ps ax\" AND MAY BE STORED IN YOUR SHELL HISTORY!\n" +
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"ONLY USE THIS MODE FOR EMERGENCIES." + tlog.ColorReset)
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2015-11-14 21:25:10 +01:00
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} else if args.zerokey {
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|
// "-zerokey"
|
2016-06-15 23:30:44 +02:00
|
|
|
tlog.Info.Printf("Using all-zero dummy master key.")
|
2016-07-03 15:37:47 +02:00
|
|
|
tlog.Info.Printf(tlog.ColorYellow +
|
|
|
|
"ZEROKEY MODE PROVIDES NO SECURITY AT ALL AND SHOULD ONLY BE USED FOR TESTING." +
|
|
|
|
tlog.ColorReset)
|
2016-02-06 19:20:54 +01:00
|
|
|
masterkey = make([]byte, cryptocore.KeyLen)
|
2015-11-14 21:25:10 +01:00
|
|
|
} else {
|
|
|
|
// Load master key from config file
|
2015-11-15 13:38:19 +01:00
|
|
|
masterkey, confFile = loadConfig(&args)
|
2015-11-14 21:25:10 +01:00
|
|
|
printMasterKey(masterkey)
|
2015-09-13 17:55:07 +02:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// Initialize FUSE server
|
2016-06-15 23:30:44 +02:00
|
|
|
tlog.Debug.Printf("cli args: %v", args)
|
2016-02-06 19:27:59 +01:00
|
|
|
srv := initFuseFrontend(masterkey, args, confFile)
|
2016-06-15 23:30:44 +02:00
|
|
|
tlog.Info.Println(tlog.ColorGreen + "Filesystem mounted and ready." + tlog.ColorReset)
|
2016-01-20 22:31:15 +01:00
|
|
|
// We are ready - send USR1 signal to our parent and switch to syslog
|
2015-11-09 23:21:11 +01:00
|
|
|
if args.notifypid > 0 {
|
|
|
|
sendUsr1(args.notifypid)
|
2016-01-20 22:31:15 +01:00
|
|
|
|
2016-01-24 18:10:18 +01:00
|
|
|
if !args.nosyslog {
|
2016-06-15 23:30:44 +02:00
|
|
|
tlog.Info.SwitchToSyslog(syslog.LOG_USER | syslog.LOG_INFO)
|
|
|
|
tlog.Debug.SwitchToSyslog(syslog.LOG_USER | syslog.LOG_DEBUG)
|
|
|
|
tlog.Warn.SwitchToSyslog(syslog.LOG_USER | syslog.LOG_WARNING)
|
2016-06-26 23:30:22 +02:00
|
|
|
tlog.SwitchLoggerToSyslog(syslog.LOG_USER | syslog.LOG_WARNING)
|
2016-01-24 18:10:18 +01:00
|
|
|
}
|
2015-11-09 23:21:11 +01:00
|
|
|
}
|
2015-11-14 21:25:10 +01:00
|
|
|
// Wait for SIGINT in the background and unmount ourselves if we get it.
|
|
|
|
// This prevents a dangling "Transport endpoint is not connected" mountpoint.
|
2015-11-02 23:08:51 +01:00
|
|
|
handleSigint(srv, args.mountpoint)
|
2015-11-01 13:28:58 +01:00
|
|
|
// Jump into server loop. Returns when it gets an umount request from the kernel.
|
2015-10-06 00:29:08 +02:00
|
|
|
srv.Serve()
|
2015-11-14 21:25:10 +01:00
|
|
|
// main exits with code 0
|
2015-09-08 00:54:24 +02:00
|
|
|
}
|
|
|
|
|
2016-02-06 19:27:59 +01:00
|
|
|
// initFuseFrontend - initialize gocryptfs/fusefrontend
|
2015-11-14 21:25:10 +01:00
|
|
|
// Calls os.Exit on errors
|
2016-02-06 19:27:59 +01:00
|
|
|
func initFuseFrontend(key []byte, args argContainer, confFile *configfile.ConfFile) *fuse.Server {
|
2016-09-20 21:58:04 +02:00
|
|
|
// Reconciliate CLI and config file arguments into a fusefrontend.Args struct
|
|
|
|
// that is passed to the filesystem implementation
|
|
|
|
cryptoBackend := cryptocore.BackendGoGCM
|
|
|
|
if args.openssl {
|
|
|
|
cryptoBackend = cryptocore.BackendOpenSSL
|
|
|
|
}
|
2016-09-25 15:05:09 +02:00
|
|
|
if args.gcmsiv {
|
2016-09-20 21:58:04 +02:00
|
|
|
cryptoBackend = cryptocore.BackendGCMSIV
|
|
|
|
}
|
2016-02-06 19:27:59 +01:00
|
|
|
frontendArgs := fusefrontend.Args{
|
2015-11-29 21:55:20 +01:00
|
|
|
Cipherdir: args.cipherdir,
|
|
|
|
Masterkey: key,
|
2015-11-28 16:52:57 +01:00
|
|
|
PlaintextNames: args.plaintextnames,
|
2016-02-06 22:54:14 +01:00
|
|
|
LongNames: args.longnames,
|
2016-09-20 21:58:04 +02:00
|
|
|
CryptoBackend: cryptoBackend,
|
2015-11-28 16:52:57 +01:00
|
|
|
}
|
|
|
|
// confFile is nil when "-zerokey" or "-masterkey" was used
|
|
|
|
if confFile != nil {
|
|
|
|
// Settings from the config file override command line args
|
2016-02-06 19:20:54 +01:00
|
|
|
frontendArgs.PlaintextNames = confFile.IsFeatureFlagSet(configfile.FlagPlaintextNames)
|
2016-09-20 21:58:04 +02:00
|
|
|
if confFile.IsFeatureFlagSet(configfile.FlagGCMSIV) {
|
|
|
|
frontendArgs.CryptoBackend = cryptocore.BackendGCMSIV
|
2016-09-20 22:59:10 +02:00
|
|
|
} else if args.reverse {
|
2016-09-25 15:05:09 +02:00
|
|
|
tlog.Fatal.Printf("GCM-SIV is required by reverse mode, but not enabled in the config file")
|
2016-09-20 22:59:10 +02:00
|
|
|
os.Exit(ERREXIT_USAGE)
|
2016-09-20 21:58:04 +02:00
|
|
|
}
|
2015-11-28 16:52:57 +01:00
|
|
|
}
|
2016-06-26 19:18:13 +02:00
|
|
|
// If allow_other is set and we run as root, try to give newly created files to
|
|
|
|
// the right user.
|
|
|
|
if args.allow_other && os.Getuid() == 0 {
|
|
|
|
frontendArgs.PreserveOwner = true
|
|
|
|
}
|
2016-01-20 20:55:56 +01:00
|
|
|
jsonBytes, _ := json.MarshalIndent(frontendArgs, "", "\t")
|
2016-06-15 23:30:44 +02:00
|
|
|
tlog.Debug.Printf("frontendArgs: %s", string(jsonBytes))
|
2016-09-25 15:05:09 +02:00
|
|
|
if frontendArgs.CryptoBackend == cryptocore.BackendGCMSIV {
|
|
|
|
tlog.Info.Printf(tlog.ColorYellow +
|
|
|
|
"Warning: The GCM-SIV format used by reverse mode is not yet finalized.\n" +
|
|
|
|
"The on-disk format will change in the future." + tlog.ColorReset)
|
|
|
|
}
|
2016-08-29 22:05:39 +02:00
|
|
|
var finalFs pathfs.FileSystem
|
|
|
|
if args.reverse {
|
|
|
|
finalFs = fusefrontend_reverse.NewFS(frontendArgs)
|
|
|
|
} else {
|
|
|
|
finalFs = fusefrontend.NewFS(frontendArgs)
|
|
|
|
}
|
2015-10-04 14:50:27 +02:00
|
|
|
pathFsOpts := &pathfs.PathNodeFsOptions{ClientInodes: true}
|
|
|
|
pathFs := pathfs.NewPathNodeFs(finalFs, pathFsOpts)
|
|
|
|
fuseOpts := &nodefs.Options{
|
2015-09-08 00:54:24 +02:00
|
|
|
// These options are to be compatible with libfuse defaults,
|
|
|
|
// making benchmarking easier.
|
|
|
|
NegativeTimeout: time.Second,
|
|
|
|
AttrTimeout: time.Second,
|
|
|
|
EntryTimeout: time.Second,
|
|
|
|
}
|
2015-10-04 14:50:27 +02:00
|
|
|
conn := nodefs.NewFileSystemConnector(pathFs.Root(), fuseOpts)
|
2015-09-19 10:47:16 +02:00
|
|
|
var mOpts fuse.MountOptions
|
|
|
|
mOpts.AllowOther = false
|
2016-05-16 23:59:26 +02:00
|
|
|
if args.allow_other {
|
2016-06-15 23:30:44 +02:00
|
|
|
tlog.Info.Printf(tlog.ColorYellow + "The option \"-allow_other\" is set. Make sure the file " +
|
|
|
|
"permissions protect your data from unwanted access." + tlog.ColorReset)
|
2016-05-16 23:59:26 +02:00
|
|
|
mOpts.AllowOther = true
|
|
|
|
// Make the kernel check the file permissions for us
|
|
|
|
mOpts.Options = append(mOpts.Options, "default_permissions")
|
|
|
|
}
|
2015-09-19 10:47:16 +02:00
|
|
|
// Set values shown in "df -T" and friends
|
|
|
|
// First column, "Filesystem"
|
2015-11-27 22:27:24 +01:00
|
|
|
mOpts.Options = append(mOpts.Options, "fsname="+args.cipherdir)
|
2015-09-19 10:47:16 +02:00
|
|
|
// Second column, "Type", will be shown as "fuse." + Name
|
2015-10-04 14:36:20 +02:00
|
|
|
mOpts.Name = "gocryptfs"
|
2016-09-21 21:25:55 +02:00
|
|
|
if args.reverse {
|
|
|
|
mOpts.Name += "-reverse"
|
|
|
|
}
|
2015-09-19 10:47:16 +02:00
|
|
|
|
2016-06-16 21:29:22 +02:00
|
|
|
// The kernel enforces read-only operation, we just have to pass "ro".
|
2016-09-02 20:58:13 +02:00
|
|
|
// Reverse mounts are always read-only
|
|
|
|
if args.ro || args.reverse {
|
2016-06-16 21:29:22 +02:00
|
|
|
mOpts.Options = append(mOpts.Options, "ro")
|
|
|
|
}
|
2016-06-26 23:03:18 +02:00
|
|
|
// Add additional mount options (if any) after the stock ones, so the user has
|
|
|
|
// a chance to override them.
|
|
|
|
if args.o != "" {
|
|
|
|
parts := strings.Split(args.o, ",")
|
|
|
|
tlog.Debug.Printf("Adding -o mount options: %v", parts)
|
|
|
|
mOpts.Options = append(mOpts.Options, parts...)
|
|
|
|
}
|
2015-11-27 22:27:24 +01:00
|
|
|
srv, err := fuse.NewServer(conn.RawFS(), args.mountpoint, &mOpts)
|
2015-09-08 00:54:24 +02:00
|
|
|
if err != nil {
|
2016-06-15 23:30:44 +02:00
|
|
|
tlog.Fatal.Printf("Mount failed: %v", err)
|
2015-10-11 18:33:28 +02:00
|
|
|
os.Exit(ERREXIT_MOUNT)
|
2015-09-08 00:54:24 +02:00
|
|
|
}
|
2015-11-27 23:34:55 +01:00
|
|
|
srv.SetDebug(args.fusedebug)
|
2015-09-08 00:54:24 +02:00
|
|
|
|
2015-12-11 19:54:53 +01:00
|
|
|
// All FUSE file and directory create calls carry explicit permission
|
|
|
|
// information. We need an unrestricted umask to create the files and
|
|
|
|
// directories with the requested permissions.
|
|
|
|
syscall.Umask(0000)
|
|
|
|
|
2015-10-06 00:29:08 +02:00
|
|
|
return srv
|
2015-09-08 00:54:24 +02:00
|
|
|
}
|
2015-11-01 13:28:58 +01:00
|
|
|
|
|
|
|
func handleSigint(srv *fuse.Server, mountpoint string) {
|
|
|
|
ch := make(chan os.Signal, 1)
|
|
|
|
signal.Notify(ch, os.Interrupt)
|
|
|
|
signal.Notify(ch, syscall.SIGTERM)
|
|
|
|
go func() {
|
|
|
|
<-ch
|
|
|
|
err := srv.Unmount()
|
|
|
|
if err != nil {
|
2016-06-15 23:30:44 +02:00
|
|
|
tlog.Warn.Print(err)
|
|
|
|
tlog.Info.Printf("Trying lazy unmount")
|
2015-11-01 13:28:58 +01:00
|
|
|
cmd := exec.Command("fusermount", "-u", "-z", mountpoint)
|
|
|
|
cmd.Stdout = os.Stdout
|
|
|
|
cmd.Stderr = os.Stderr
|
|
|
|
cmd.Run()
|
|
|
|
}
|
|
|
|
os.Exit(1)
|
|
|
|
}()
|
|
|
|
}
|