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write.go
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/
write.go
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package main
import (
"flag"
"io"
"k8s.io/minikube/third_party/go9p/p"
"k8s.io/minikube/third_party/go9p/p/clnt"
"log"
"os"
)
var debuglevel = flag.Int("d", 0, "debuglevel")
var addr = flag.String("addr", "127.0.0.1:5640", "network address")
func main() {
var n, m int
var user p.User
var err error
var c *clnt.Clnt
var file *clnt.File
var buf []byte
flag.Parse()
user = p.OsUsers.Uid2User(os.Geteuid())
clnt.DefaultDebuglevel = *debuglevel
c, err = clnt.Mount("tcp", *addr, "", user)
if err != nil {
goto error
}
if flag.NArg() != 1 {
log.Println("invalid arguments")
return
}
file, err = c.FOpen(flag.Arg(0), p.OWRITE|p.OTRUNC)
if err != nil {
file, err = c.FCreate(flag.Arg(0), 0666, p.OWRITE)
if err != nil {
goto error
}
}
buf = make([]byte, 8192)
for {
n, err = os.Stdin.Read(buf)
if err != nil && err != io.EOF {
goto error
}
if n == 0 {
break
}
m, err = file.Write(buf[0:n])
if err != nil {
goto error
}
if m != n {
err = &p.Error{"short write", 0}
goto error
}
}
file.Close()
return
error:
log.Println("Error", err)
}