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Valide platform on loading config.json 

run an arm64 image on an amd64 platform, it will failed with
````
panic: standard_init_linux.go:175: exec user process caused "exec format error" [recovered]
        panic: standard_init_linux.go:175: exec user process caused "exec format error"

goroutine 1 [running, locked to thread]:
panic(0x7e7e40, 0xc820124380)
        /usr/local/go/src/runtime/panic.go:481 +0x3e6
github.com/urfave/cli.HandleAction.func1(0xc8200c52f8)
        /home/lei/opencontainers/runc/Godeps/_workspace/src/github.com/urfave/cli/app.go:478 +0x38e
panic(0x7e7e40, 0xc820124380)
        /usr/local/go/src/runtime/panic.go:443 +0x4e9
github.com/opencontainers/runc/libcontainer.(*LinuxFactory).StartInitialization.func1(0xc8200c4c08, 0xc8200220a0, 0xc8200c4d18)
        /home/lei/opencontainers/runc/Godeps/_workspace/src/github.com/opencontainers/runc/libcontainer/factory_linux.go:259 +0x136
github.com/opencontainers/runc/libcontainer.(*LinuxFactory).StartInitialization(0xc82006c780, 0x7fb9124733f8, 0xc820124380)
        /home/lei/opencontainers/runc/Godeps/_workspace/src/github.com/opencontainers/runc/libcontainer/factory_linux.go:277 +0x5b1
main.glob.func8(0xc820090780, 0x0, 0x0)
        /home/lei/opencontainers/runc/main_unix.go:26 +0x68
reflect.Value.call(0x74ca00, 0x8fda40, 0x13, 0x844470, 0x4, 0xc8200c5278, 0x1, 0x1, 0x0, 0x0, ...)
        /usr/local/go/src/reflect/value.go:435 +0x120d
reflect.Value.Call(0x74ca00, 0x8fda40, 0x13, 0xc8200c5278, 0x1, 0x1, 0x0, 0x0, 0x0)
        /usr/local/go/src/reflect/value.go:303 +0xb1
github.com/urfave/cli.HandleAction(0x74ca00, 0x8fda40, 0xc820090780, 0x0, 0x0)
        /home/lei/opencontainers/runc/Godeps/_workspace/src/github.com/urfave/cli/app.go:487 +0x2ee
github.com/urfave/cli.Command.Run(0x847330, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8dcec0, 0x51, 0x0, ...)
        /home/lei/opencontainers/runc/Godeps/_workspace/src/github.com/urfave/cli/command.go:191 +0xfec
github.com/urfave/cli.(*App).Run(0xc820001980, 0xc82000a100, 0x2, 0x2, 0x0, 0x0)
        /home/lei/opencontainers/runc/Godeps/_workspace/src/github.com/urfave/cli/app.go:240 +0xaa4
main.main()
        /home/lei/opencontainers/runc/main.go:137 +0xe24

````
instead of throwing panic on execing the container process, we should
throw the platform mismatch at the very beginning, it's much more
clear and can tell user what's wrong.

Signed-off-by: Lei Jitang <leijitang@huawei.com>
This commit is contained in:
Lei Jitang 2016-10-14 02:14:36 -04:00
parent d186a7552b
commit 1cd050244e
1 changed files with 13 additions and 0 deletions
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13
spec.go
View File

@ -240,6 +240,9 @@ func loadSpec(cPath string) (spec *specs.Spec, err error) {
if err = json.NewDecoder(cf).Decode(&spec); err != nil {
return nil, err
}
if err = validatePlatform(&spec.Platform); err != nil {
return nil, err
}
return spec, validateProcessSpec(&spec.Process)
}
@ -254,3 +257,13 @@ func createLibContainerRlimit(rlimit specs.Rlimit) (configs.Rlimit, error) {
Soft: uint64(rlimit.Soft),
}, nil
}
func validatePlatform(platform *specs.Platform) error {
if platform.OS != runtime.GOOS {
return fmt.Errorf("target os %s mismatch with current os %s", platform.OS, runtime.GOOS)
}
if platform.Arch != runtime.GOARCH {
return fmt.Errorf("target arch %s mismatch with current arch %s", platform.Arch, runtime.GOARCH)
}
return nil
}