diff options
Diffstat (limited to 'vendor/github.com/hashicorp/go-sockaddr/route_info_linux.go')
-rw-r--r-- | vendor/github.com/hashicorp/go-sockaddr/route_info_linux.go | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/go-sockaddr/route_info_linux.go b/vendor/github.com/hashicorp/go-sockaddr/route_info_linux.go new file mode 100644 index 0000000..c2ec91e --- /dev/null +++ b/vendor/github.com/hashicorp/go-sockaddr/route_info_linux.go @@ -0,0 +1,40 @@ +package sockaddr + +import ( + "errors" + "os/exec" +) + +type routeInfo struct { + cmds map[string][]string +} + +// NewRouteInfo returns a Linux-specific implementation of the RouteInfo +// interface. +func NewRouteInfo() (routeInfo, error) { + // CoreOS Container Linux moved ip to /usr/bin/ip, so look it up on + // $PATH and fallback to /sbin/ip on error. + path, _ := exec.LookPath("ip") + if path == "" { + path = "/sbin/ip" + } + + return routeInfo{ + cmds: map[string][]string{"ip": {path, "route"}}, + }, nil +} + +// GetDefaultInterfaceName returns the interface name attached to the default +// route on the default interface. +func (ri routeInfo) GetDefaultInterfaceName() (string, error) { + out, err := exec.Command(ri.cmds["ip"][0], ri.cmds["ip"][1:]...).Output() + if err != nil { + return "", err + } + + var ifName string + if ifName, err = parseDefaultIfNameFromIPCmd(string(out)); err != nil { + return "", errors.New("No default interface found") + } + return ifName, nil +} |