github.com/stevegt/moby@v1.13.1/oci/defaults_linux.go (about)

     1  package oci
     2  
     3  import (
     4  	"os"
     5  	"runtime"
     6  
     7  	"github.com/opencontainers/runtime-spec/specs-go"
     8  )
     9  
    10  func sPtr(s string) *string      { return &s }
    11  func iPtr(i int64) *int64        { return &i }
    12  func u32Ptr(i int64) *uint32     { u := uint32(i); return &u }
    13  func fmPtr(i int64) *os.FileMode { fm := os.FileMode(i); return &fm }
    14  
    15  // DefaultSpec returns default oci spec used by docker.
    16  func DefaultSpec() specs.Spec {
    17  	s := specs.Spec{
    18  		Version: specs.Version,
    19  		Platform: specs.Platform{
    20  			OS:   runtime.GOOS,
    21  			Arch: runtime.GOARCH,
    22  		},
    23  	}
    24  	s.Mounts = []specs.Mount{
    25  		{
    26  			Destination: "/proc",
    27  			Type:        "proc",
    28  			Source:      "proc",
    29  			Options:     []string{"nosuid", "noexec", "nodev"},
    30  		},
    31  		{
    32  			Destination: "/dev",
    33  			Type:        "tmpfs",
    34  			Source:      "tmpfs",
    35  			Options:     []string{"nosuid", "strictatime", "mode=755"},
    36  		},
    37  		{
    38  			Destination: "/dev/pts",
    39  			Type:        "devpts",
    40  			Source:      "devpts",
    41  			Options:     []string{"nosuid", "noexec", "newinstance", "ptmxmode=0666", "mode=0620", "gid=5"},
    42  		},
    43  		{
    44  			Destination: "/sys",
    45  			Type:        "sysfs",
    46  			Source:      "sysfs",
    47  			Options:     []string{"nosuid", "noexec", "nodev", "ro"},
    48  		},
    49  		{
    50  			Destination: "/sys/fs/cgroup",
    51  			Type:        "cgroup",
    52  			Source:      "cgroup",
    53  			Options:     []string{"ro", "nosuid", "noexec", "nodev"},
    54  		},
    55  		{
    56  			Destination: "/dev/mqueue",
    57  			Type:        "mqueue",
    58  			Source:      "mqueue",
    59  			Options:     []string{"nosuid", "noexec", "nodev"},
    60  		},
    61  	}
    62  	s.Process.Capabilities = []string{
    63  		"CAP_CHOWN",
    64  		"CAP_DAC_OVERRIDE",
    65  		"CAP_FSETID",
    66  		"CAP_FOWNER",
    67  		"CAP_MKNOD",
    68  		"CAP_NET_RAW",
    69  		"CAP_SETGID",
    70  		"CAP_SETUID",
    71  		"CAP_SETFCAP",
    72  		"CAP_SETPCAP",
    73  		"CAP_NET_BIND_SERVICE",
    74  		"CAP_SYS_CHROOT",
    75  		"CAP_KILL",
    76  		"CAP_AUDIT_WRITE",
    77  	}
    78  
    79  	s.Linux = &specs.Linux{
    80  		MaskedPaths: []string{
    81  			"/proc/kcore",
    82  			"/proc/latency_stats",
    83  			"/proc/timer_list",
    84  			"/proc/timer_stats",
    85  			"/proc/sched_debug",
    86  			"/sys/firmware",
    87  		},
    88  		ReadonlyPaths: []string{
    89  			"/proc/asound",
    90  			"/proc/bus",
    91  			"/proc/fs",
    92  			"/proc/irq",
    93  			"/proc/sys",
    94  			"/proc/sysrq-trigger",
    95  		},
    96  		Namespaces: []specs.Namespace{
    97  			{Type: "mount"},
    98  			{Type: "network"},
    99  			{Type: "uts"},
   100  			{Type: "pid"},
   101  			{Type: "ipc"},
   102  		},
   103  		// Devices implicitly contains the following devices:
   104  		// null, zero, full, random, urandom, tty, console, and ptmx.
   105  		// ptmx is a bind-mount or symlink of the container's ptmx.
   106  		// See also: https://github.com/opencontainers/runtime-spec/blob/master/config-linux.md#default-devices
   107  		Devices: []specs.Device{},
   108  		Resources: &specs.Resources{
   109  			Devices: []specs.DeviceCgroup{
   110  				{
   111  					Allow:  false,
   112  					Access: sPtr("rwm"),
   113  				},
   114  				{
   115  					Allow:  true,
   116  					Type:   sPtr("c"),
   117  					Major:  iPtr(1),
   118  					Minor:  iPtr(5),
   119  					Access: sPtr("rwm"),
   120  				},
   121  				{
   122  					Allow:  true,
   123  					Type:   sPtr("c"),
   124  					Major:  iPtr(1),
   125  					Minor:  iPtr(3),
   126  					Access: sPtr("rwm"),
   127  				},
   128  				{
   129  					Allow:  true,
   130  					Type:   sPtr("c"),
   131  					Major:  iPtr(1),
   132  					Minor:  iPtr(9),
   133  					Access: sPtr("rwm"),
   134  				},
   135  				{
   136  					Allow:  true,
   137  					Type:   sPtr("c"),
   138  					Major:  iPtr(1),
   139  					Minor:  iPtr(8),
   140  					Access: sPtr("rwm"),
   141  				},
   142  				{
   143  					Allow:  true,
   144  					Type:   sPtr("c"),
   145  					Major:  iPtr(5),
   146  					Minor:  iPtr(0),
   147  					Access: sPtr("rwm"),
   148  				},
   149  				{
   150  					Allow:  true,
   151  					Type:   sPtr("c"),
   152  					Major:  iPtr(5),
   153  					Minor:  iPtr(1),
   154  					Access: sPtr("rwm"),
   155  				},
   156  				{
   157  					Allow:  false,
   158  					Type:   sPtr("c"),
   159  					Major:  iPtr(10),
   160  					Minor:  iPtr(229),
   161  					Access: sPtr("rwm"),
   162  				},
   163  			},
   164  		},
   165  	}
   166  
   167  	return s
   168  }