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Make docker use the signal pkg with strings 

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume@charmes.net> (github: creack)
This commit is contained in:
Guillaume J. Charmes 2014-03-10 14:22:27 -07:00
parent 10dc16dcd3
commit 157f24ca77
7 changed files with 66 additions and 81 deletions
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12
api/client.go
View File

@ -540,7 +540,17 @@ func (cli *DockerCli) forwardAllSignals(cid string) chan os.Signal {
if s == syscall.SIGCHLD {
continue
}
if _, _, err := readBody(cli.call("POST", fmt.Sprintf("/containers/%s/kill?signal=%d", cid, s), nil, false)); err != nil {
var sig string
for sigStr, sigN := range signal.SignalMap {
if sigN == s {
sig = sigStr
break
}
}
if sig == "" {
utils.Errorf("Unsupported signal: %d. Discarding.", s)
}
if _, _, err := readBody(cli.call("POST", fmt.Sprintf("/containers/%s/kill?signal=%s", cid, sig), nil, false)); err != nil {
utils.Debugf("Error sending signal: %s", err)
}
}

2
pkg/signal/signal.go
View File

@ -7,7 +7,7 @@ import (
func CatchAll(sigc chan os.Signal) {
handledSigs := []os.Signal{}
for _, s := range signalMap {
for _, s := range SignalMap {
handledSigs = append(handledSigs, s)
}
signal.Notify(sigc, handledSigs...)

64
pkg/signal/signal_darwin.go
View File

@ -4,37 +4,37 @@ import (
"syscall"
)
var signalMap = map[string]syscall.Signal{
"ABRT": syscall.SIGABRT,
"ALRM": syscall.SIGALRM,
"BUG": syscall.SIGBUS,
"CHLD": syscall.SIGCHLD,
"CONT": syscall.SIGCONT,
"EMT": syscall.SIGEMT,
"FPE": syscall.SIGFPE,
"HUP": syscall.SIGHUP,
"ILL": syscall.SIGILL,
"INFO": syscall.SIGINFO,
"INT": syscall.SIGINT,
"IO": syscall.SIGIO,
"IOT": syscall.SIGIOT,
"KILL": syscall.SIGKILL,
"PIPE": syscall.SIGPIPE,
"PROF": syscall.SIGPROF,
"QUIT": syscall.SIGQUIT,
"SEGV": syscall.SIGSEGV,
"STOP": syscall.SIGSTOP,
"SYS": syscall.SIGSYS,
"TERM": syscall.SIGTERM,
"TRAP": syscall.SIGTRAP,
"TSTP": syscall.SIGTSTP,
"TTIN": syscall.SIGTTIN,
"TTOU": syscall.SIGTTOU,
"URG": syscall.SIGURG,
"USR1": syscall.SIGUSR1,
"USR2": syscall.SIGUSR2,
var SignalMap = map[string]syscall.Signal{
"ABRT": syscall.SIGABRT,
"ALRM": syscall.SIGALRM,
"BUG": syscall.SIGBUS,
"CHLD": syscall.SIGCHLD,
"CONT": syscall.SIGCONT,
"EMT": syscall.SIGEMT,
"FPE": syscall.SIGFPE,
"HUP": syscall.SIGHUP,
"ILL": syscall.SIGILL,
"INFO": syscall.SIGINFO,
"INT": syscall.SIGINT,
"IO": syscall.SIGIO,
"IOT": syscall.SIGIOT,
"KILL": syscall.SIGKILL,
"PIPE": syscall.SIGPIPE,
"PROF": syscall.SIGPROF,
"QUIT": syscall.SIGQUIT,
"SEGV": syscall.SIGSEGV,
"STOP": syscall.SIGSTOP,
"SYS": syscall.SIGSYS,
"TERM": syscall.SIGTERM,
"TRAP": syscall.SIGTRAP,
"TSTP": syscall.SIGTSTP,
"TTIN": syscall.SIGTTIN,
"TTOU": syscall.SIGTTOU,
"URG": syscall.SIGURG,
"USR1": syscall.SIGUSR1,
"USR2": syscall.SIGUSR2,
"VTALRM": syscall.SIGVTALRM,
"WINCH": syscall.SIGWINCH,
"XCPU": syscall.SIGXCPU,
"XFSZ": syscall.SIGXFSZ,
"WINCH": syscall.SIGWINCH,
"XCPU": syscall.SIGXCPU,
"XFSZ": syscall.SIGXFSZ,
}

2
pkg/signal/signal_freebsd.go
View File

@ -6,7 +6,7 @@ import (
"syscall"
)
var signalMap = map[string]syscall.Signal{
var SignalMap = map[string]syscall.Signal{
"ABRT": syscall.SIGABRT,
"ALRM": syscall.SIGALRM,
"BUF": syscall.SIGBUS,

2
pkg/signal/signal_linux.go
View File

@ -4,7 +4,7 @@ import (
"syscall"
)
var signalMap = map[string]syscall.Signal{
var SignalMap = map[string]syscall.Signal{
"ABRT": syscall.SIGABRT,
"ALRM": syscall.SIGALRM,
"BUS": syscall.SIGBUS,

2
pkg/signal/signal_unsupported.go
View File

@ -6,4 +6,4 @@ import (
"syscall"
)
var signalMap = map[string]syscall.Signal{}
var SignalMap = map[string]syscall.Signal{}

63
server.go
View File

@ -8,6 +8,7 @@ import (
"github.com/dotcloud/docker/dockerversion"
"github.com/dotcloud/docker/engine"
"github.com/dotcloud/docker/pkg/graphdb"
"github.com/dotcloud/docker/pkg/signal"
"github.com/dotcloud/docker/registry"
"github.com/dotcloud/docker/runconfig"
"github.com/dotcloud/docker/utils"
@ -18,7 +19,7 @@ import (
"net/url"
"os"
"os/exec"
"os/signal"
gosignal "os/signal"
"path"
"path/filepath"
"runtime"
@ -47,7 +48,7 @@ func InitServer(job *engine.Job) engine.Status {
}
job.Logf("Setting up signal traps")
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT)
gosignal.Notify(c, os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT)
go func() {
sig := <-c
log.Printf("Received signal '%v', exiting\n", sig)
@ -122,56 +123,30 @@ func (v *simpleVersionInfo) Version() string {
// for the container to exit.
// If a signal is given, then just send it to the container and return.
func (srv *Server) ContainerKill(job *engine.Job) engine.Status {
signalMap := map[string]syscall.Signal{
"HUP": syscall.SIGHUP,
"INT": syscall.SIGINT,
"QUIT": syscall.SIGQUIT,
"ILL": syscall.SIGILL,
"TRAP": syscall.SIGTRAP,
"ABRT": syscall.SIGABRT,
"BUS": syscall.SIGBUS,
"FPE": syscall.SIGFPE,
"KILL": syscall.SIGKILL,
"USR1": syscall.SIGUSR1,
"SEGV": syscall.SIGSEGV,
"USR2": syscall.SIGUSR2,
"PIPE": syscall.SIGPIPE,
"ALRM": syscall.SIGALRM,
"TERM": syscall.SIGTERM,
//"STKFLT": syscall.SIGSTKFLT,
"CHLD": syscall.SIGCHLD,
"CONT": syscall.SIGCONT,
"STOP": syscall.SIGSTOP,
"TSTP": syscall.SIGTSTP,
"TTIN": syscall.SIGTTIN,
"TTOU": syscall.SIGTTOU,
"URG": syscall.SIGURG,
"XCPU": syscall.SIGXCPU,
"XFSZ": syscall.SIGXFSZ,
"VTALRM": syscall.SIGVTALRM,
"PROF": syscall.SIGPROF,
"WINCH": syscall.SIGWINCH,
"IO": syscall.SIGIO,
//"PWR": syscall.SIGPWR,
"SYS": syscall.SIGSYS,
}
if n := len(job.Args); n < 1 || n > 2 {
return job.Errorf("Usage: %s CONTAINER [SIGNAL]", job.Name)
}
name := job.Args[0]
var sig uint64
var (
name = job.Args[0]
sig uint64
err error
)
// If we have a signal, look at it. Otherwise, do nothing
if len(job.Args) == 2 && job.Args[1] != "" {
sig = uint64(signalMap[job.Args[1]])
if sig == 0 {
var err error
// The largest legal signal is 31, so let's parse on 5 bits
sig, err = strconv.ParseUint(job.Args[1], 10, 5)
if err != nil {
// Check if we passed the singal as a number:
// The largest legal signal is 31, so let's parse on 5 bits
sig, err = strconv.ParseUint(job.Args[1], 10, 5)
if err != nil {
// The signal is not a number, treat it as a string
sig = uint64(signal.SignalMap[job.Args[1]])
if sig == 0 {
return job.Errorf("Invalid signal: %s", job.Args[1])
}
}
}
if container := srv.runtime.Get(name); container != nil {
// If no signal is passed, or SIGKILL, perform regular Kill (SIGKILL + wait())
if sig == 0 || syscall.Signal(sig) == syscall.SIGKILL {