func main() {
flag.Parse()
naddr := *addr
if strings.LastIndex(naddr, ":") == -1 {
naddr = naddr + ":5640"
}
c, err := g9pc.Mount("tcp", naddr, "")
if err != nil {
log.Fatalf("error mounting %s: %v", naddr, err)
}
ns := new(g9pc.Ns)
root, err := c.Walk("")
if err != nil {
log.Fatalf("error walking to /: %v", err)
}
ns.Root = g9pc.NewNsFile(root.File())
ns.Dot = ns.Root
if flag.NArg() > 0 {
flags := flag.Args()
for _, uc := range flags {
cmd(ns, uc)
}
} else {
interactive(ns)
}
return
}
func lsone(ns *g9pc.Ns, s string, long bool) {
st, err := ns.Stat(s)
if err != nil {
fmt.Fprintf(os.Stderr, "error stat: %s\n", err)
return
}
if st.Mode&g9p.DMDIR != 0 {
file, err := ns.Open(s, g9p.OREAD)
if err != nil {
fmt.Fprintf(os.Stderr, "error opening dir: %s\n", err)
return
}
defer file.Close()
for {
d, err := file.Dirread()
if err != nil && err != io.EOF {
fmt.Fprintf(os.Stderr, "error reading dir: %s\n", err)
}
if d == nil || len(d) == 0 {
break
}
for _, dir := range d {
if long {
fmt.Fprintf(os.Stdout, "%s\n", dirtostr(dir))
} else {
os.Stdout.WriteString(dir.Name + "\n")
}
}
}
} else {
fmt.Fprintf(os.Stdout, "%s\n", dirtostr(st))
}
}
func cmdread(ns *g9pc.Ns, s []string) {
sq, results := seq.NewSequencer()
go func() {
r := <-results // walk result
r = <-results // open result
r = <-results // readstream result
_, ok := <-results
if ok {
panic("expected closed")
}
}()
f := ns.SeqWalk(sq, s[0])
sq.Do(f.File(), seq.OpenReq{g9p.OREAD})
rd := f.SeqReadStream(sq, 200, 20)
buf := make([]byte, 10)
for {
n, err := rd.Read(buf)
if n == 0 {
fmt.Fprintf(os.Stderr, "read error: %v\n", err)
break
}
fmt.Printf("%q\n", buf[0:n])
}
rd.Close()
sq.Do(f.File(), seq.ClunkReq{}) // strictly speaking unnecessary.
sq.Do(nil, nil)
sq.Wait()
}
// Remove f from remote server
func rmone(ns *g9pc.Ns, f string) {
err := ns.Remove(f)
if err != nil {
fmt.Fprintf(os.Stderr, "error in stat %s: %s\n", f, err)
return
}
}
// Copy a remote file to local filesystem
func cmdget(ns *g9pc.Ns, s []string) {
var from, to string
switch len(s) {
case 1:
from, to = path.Split(path.Clean(s[0]))
case 2:
from, to = s[0], s[1]
default:
fmt.Fprintf(os.Stderr, "from arguments; usage: get from to\n")
}
tofile, err := os.Create(to)
if err != nil {
fmt.Fprintf(os.Stderr, "error opening %s for writing: %s\n", to, err)
return
}
defer tofile.Close()
file, err := ns.Open(from, g9p.OREAD)
if err != nil {
fmt.Fprintf(os.Stderr, "error opening %s for writing: %s\n", to, err)
return
}
defer file.Close()
_, err = io.Copy(tofile, file)
if err != nil {
fmt.Fprintf(os.Stderr, "error copying: %v\n", err)
return
}
}
// Create a single directory on remote server
func mkone(ns *g9pc.Ns, fname string) {
file, err := ns.Create(fname, g9p.OREAD, 0777|g9p.DMDIR)
if err != nil {
fmt.Fprintf(os.Stderr, "error creating directory %s: %s\n", fname, err)
return
}
file.Close()
}
// Stat the remote file f
func statone(ns *g9pc.Ns, f string) {
stat, err := ns.Stat(f)
if err != nil {
fmt.Fprintf(os.Stderr, "error in stat %s: %s\n", f, err)
return
}
fmt.Fprintf(os.Stdout, "%v\n", stat)
}
// Print the contents of f using streaming.
func cmdstream(ns *g9pc.Ns, s []string) {
for _, fname := range s {
r := ns.ReadStream(fname, 20, 10)
_, err := io.Copy(os.Stdout, r)
if err != nil {
fmt.Fprintf(os.Stderr, "error reading %s: %v\n", fname, err)
}
r.Close()
}
}
func cmdcd(ns *g9pc.Ns, s []string) {
if s == nil {
return
}
d := s[0]
err := ns.Chdir(d)
if err != nil {
fmt.Fprintf(os.Stderr, "chdir: %v\n", err)
return
}
cwd = path.Clean(cwd + "/" + d)
}
// Print the contents of f
func cmdcat(ns *g9pc.Ns, s []string) {
for _, fname := range s {
file, err := ns.Open(fname, g9p.OREAD)
if err != nil {
fmt.Fprintf(os.Stderr, "error opening %s: %s\n", fname, err)
continue
}
defer file.Close()
_, err = io.Copy(os.Stdout, file)
if err != nil {
fmt.Fprintf(os.Stderr, "error: %v\n", err)
}
}
}
func cmdtorture(ns *g9pc.Ns, s []string) {
path := "."
if len(s) > 0 {
path = s[0]
}
t := &traverser{
out: make(chan string),
refc: make(chan int),
// tokc: make(chan bool, 2),
}
if len(s) > 1 {
max, err := strconv.Atoi(s[1])
if err != nil {
fmt.Fprintf(os.Stderr, "max?: %v\n", err)
return
}
t.tokc = make(chan bool, max)
for i := 0; i < max; i++ {
t.tokc <- true
}
}
fid, err := ns.Walk(path)
if fid == nil {
fmt.Fprintf(os.Stderr, "cannot walk to %s: %v\n", s[0], err)
return
}
ref := 1
maxref := 1
go func() {
t.traverse(fid, path, "", make(chan bool, 1))
t.refc <- -1
}()
for ref > 0 {
select {
case s := <-t.out:
fmt.Print("************ ", s)
case r := <-t.refc:
ref += r
if ref > maxref {
maxref = ref
}
}
}
fmt.Printf("\n")
fmt.Printf("max procs %d\n", maxref)
}
// Write the string s to remote file f. Create f if it doesn't exist
func writeone(ns *g9pc.Ns, fname, s string) {
file, err := ns.Open(fname, g9p.OWRITE|g9p.OTRUNC)
if err != nil {
file, err = ns.Create(fname, g9p.OWRITE, 0666)
if err != nil {
fmt.Fprintf(os.Stderr, "error opening %s: %v\n", fname, err)
return
}
}
defer file.Close()
m, err := file.Write([]byte(s))
if err != nil {
fmt.Fprintf(os.Stderr, "error writing to %s: %s\n", fname, err)
return
}
if m != len(s) {
fmt.Fprintf(os.Stderr, "short write %s\n", fname)
return
}
}
// Copy a local file to remote server
func cmdput(ns *g9pc.Ns, s []string) {
var from, to string
switch len(s) {
case 1:
_, to = path.Split(s[0])
to = normpath(to)
from = s[0]
case 2:
from, to = s[0], normpath(s[1])
default:
fmt.Fprintf(os.Stderr, "incorrect arguments; usage: put local [remote]\n")
}
fromfile, err := os.Open(from)
if err != nil {
fmt.Fprintf(os.Stderr, "error opening %s for reading: %s\n", from, err)
return
}
defer fromfile.Close()
file, err := ns.Open(to, g9p.OWRITE|g9p.OTRUNC)
if err != nil {
file, err = ns.Create(to, g9p.OWRITE, 0666)
if err != nil {
fmt.Fprintf(os.Stderr, "error opening %s for writing: %s\n", to, err)
return
}
}
fmt.Fprintf(os.Stderr, "opened file ok\n")
defer file.Close()
n, err := Copy(file, fromfile)
if err != nil {
fmt.Fprintf(os.Stderr, "error copying file: %v (%d bytes copied)\n", err, n)
}
fmt.Fprintf(os.Stderr, "copied %d bytes\n", n)
}
