diff options
Diffstat (limited to 'pkg/specgen/generate/security.go')
| -rw-r--r-- | pkg/specgen/generate/security.go | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/pkg/specgen/generate/security.go b/pkg/specgen/generate/security.go index 87e8029a7..d17cd4a9a 100644 --- a/pkg/specgen/generate/security.go +++ b/pkg/specgen/generate/security.go @@ -7,6 +7,7 @@ import ( "github.com/containers/common/pkg/capabilities" "github.com/containers/common/pkg/config" "github.com/containers/podman/v2/libpod" + "github.com/containers/podman/v2/libpod/define" "github.com/containers/podman/v2/libpod/image" "github.com/containers/podman/v2/pkg/specgen" "github.com/containers/podman/v2/pkg/util" @@ -130,12 +131,13 @@ func securityConfigureGenerator(s *specgen.SpecGenerator, g *generate.Generator, } configSpec := g.Config + configSpec.Process.Capabilities.Ambient = []string{} configSpec.Process.Capabilities.Bounding = caplist + configSpec.Process.Capabilities.Inheritable = caplist if s.User == "" || s.User == "root" || s.User == "0" { configSpec.Process.Capabilities.Effective = caplist configSpec.Process.Capabilities.Permitted = caplist - configSpec.Process.Capabilities.Inheritable = caplist } else { userCaps, err := capabilities.NormalizeCapabilities(s.CapAdd) if err != nil { @@ -167,7 +169,52 @@ func securityConfigureGenerator(s *specgen.SpecGenerator, g *generate.Generator, } g.SetRootReadonly(s.ReadOnlyFilesystem) + + // Add default sysctls + defaultSysctls, err := util.ValidateSysctls(rtc.Sysctls()) + if err != nil { + return err + } + for sysctlKey, sysctlVal := range defaultSysctls { + + // Ignore mqueue sysctls if --ipc=host + if s.IpcNS.IsHost() && strings.HasPrefix(sysctlKey, "fs.mqueue.") { + logrus.Infof("Sysctl %s=%s ignored in containers.conf, since IPC Namespace set to host", sysctlKey, sysctlVal) + + continue + } + + // Ignore net sysctls if --net=host + if s.NetNS.IsHost() && strings.HasPrefix(sysctlKey, "net.") { + logrus.Infof("Sysctl %s=%s ignored in containers.conf, since Network Namespace set to host", sysctlKey, sysctlVal) + continue + } + + // Ignore uts sysctls if --uts=host + if s.UtsNS.IsHost() && (strings.HasPrefix(sysctlKey, "kernel.domainname") || strings.HasPrefix(sysctlKey, "kernel.hostname")) { + logrus.Infof("Sysctl %s=%s ignored in containers.conf, since UTS Namespace set to host", sysctlKey, sysctlVal) + continue + } + + g.AddLinuxSysctl(sysctlKey, sysctlVal) + } + for sysctlKey, sysctlVal := range s.Sysctl { + + if s.IpcNS.IsHost() && strings.HasPrefix(sysctlKey, "fs.mqueue.") { + return errors.Wrapf(define.ErrInvalidArg, "sysctl %s=%s can't be set since IPC Namespace set to host", sysctlKey, sysctlVal) + } + + // Ignore net sysctls if --net=host + if s.NetNS.IsHost() && strings.HasPrefix(sysctlKey, "net.") { + return errors.Wrapf(define.ErrInvalidArg, "sysctl %s=%s can't be set since Host Namespace set to host", sysctlKey, sysctlVal) + } + + // Ignore uts sysctls if --uts=host + if s.UtsNS.IsHost() && (strings.HasPrefix(sysctlKey, "kernel.domainname") || strings.HasPrefix(sysctlKey, "kernel.hostname")) { + return errors.Wrapf(define.ErrInvalidArg, "sysctl %s=%s can't be set since UTS Namespace set to host", sysctlKey, sysctlVal) + } + g.AddLinuxSysctl(sysctlKey, sysctlVal) } |