Add anchors to config and config linux

Signed-off-by: Mrunal Patel <[email protected]>

Author: mrunalp

config-linux.md

@@ -1,9 +1,9 @@
-# Linux-specific Container Configuration
+# <a name="linuxContainerConfiguration" />Linux Container Configuration
 
 This document describes the schema for the [Linux-specific section](config.md#platform-specific-configuration) of the [container configuration](config.md).
 The Linux container specification uses various kernel features like namespaces, cgroups, capabilities, LSM, and filesystem jails to fulfill the spec.
 
-## Default Filesystems
+## <a name="configLinuxDefaultFilesystems" />Default Filesystems
 
 The Linux ABI includes both syscalls and several special file paths.
 Applications expecting a Linux environment will very likely expect these file paths to be setup correctly.
@@ -17,7 +17,7 @@ The following filesystems SHOULD be made available in each container's filesyste
 | /dev/pts | [devpts](https://www.kernel.org/doc/Documentation/filesystems/devpts.txt) |
 | /dev/shm | [tmpfs](https://www.kernel.org/doc/Documentation/filesystems/tmpfs.txt)   |
 
-## Namespaces
+## <a name="configLinuxNamespaces" />Namespaces
 
 A namespace wraps a global system resource in an abstraction that makes it appear to the processes within the namespace that they have their own isolated instance of the global resource.
 Changes to the global resource are visible to other processes that are members of the namespace, but are invisible to other processes.
@@ -71,7 +71,7 @@ If a `namespaces` field contains duplicated namespaces with same `type`, the run
     ]
 ```
 
-## User namespace mappings
+## <a name="configLinuxUserNamespaceMappings" />User namespace mappings
 
 **`uidMappings`** (array of objects, OPTIONAL) describes the user namespace uid mappings from the host to the container.
 **`gidMappings`** (array of objects, OPTIONAL) describes the user namespace gid mappings from the host to the container.
@@ -104,7 +104,7 @@ Note that the number of mapping entries MAY be limited by the [kernel][user-name
     ]
 ```
 
-## Devices
+## <a name="configLinuxDevices" />Devices
 
 **`devices`** (array of objects, OPTIONAL) lists devices that MUST be available in the container.
 The runtime may supply them however it likes (with [mknod][mknod.2], by bind mounting from the runtime mount namespace, etc.).
@@ -148,7 +148,7 @@ The same `type`, `major` and `minor` SHOULD NOT be used for multiple devices.
     ]
 ```
 
-###### Default Devices
+###### <a name="configLinuxDefaultDevices" />Default Devices
 
 In addition to any devices configured with this setting, the runtime MUST also supply:
 
@@ -162,7 +162,7 @@ In addition to any devices configured with this setting, the runtime MUST also s
 * [`/dev/ptmx`][pts.4].
   A [bind-mount or symlink of the container's `/dev/pts/ptmx`][devpts].
 
-## Control groups
+## <a name="configLinuxControlGroups" />Control groups
 
 Also known as cgroups, they are used to restrict resource usage for a container and handle device access.
 cgroups provide controls (through controllers) to restrict cpu, memory, IO, pids and network for the container.
@@ -207,7 +207,7 @@ However, a runtime MAY attach the container process to additional cgroup control
    }
 ```
 
-#### Device whitelist
+#### <a name="configLinuxDeviceWhitelist" />Device whitelist
 
 **`devices`** (array of objects, OPTIONAL) configures the [device whitelist][cgroup-v1-devices].
 The runtime MUST apply entries in the listed order.
@@ -247,7 +247,7 @@ Each entry has the following structure:
     ]
 ```
 
-#### Disable out-of-memory killer
+#### <a name="configLinuxDisableOutOfMemoryKiller" />Disable out-of-memory killer
 
 `disableOOMKiller` contains a boolean (`true` or `false`) that enables or disables the Out of Memory killer for a cgroup.
 If enabled (`false`), tasks that attempt to consume more memory than they are allowed are immediately killed by the OOM killer.
@@ -263,7 +263,7 @@ For more information, see [the memory cgroup man page][cgroup-v1-memory].
     "disableOOMKiller": false
 ```
 
-#### Set oom_score_adj
+#### <a name="configLinuxSetOomScoreAdj" />Set oom_score_adj
 
 `oomScoreAdj` sets heuristic regarding how the process is evaluated by the kernel during memory pressure.
 For more information, see [the proc filesystem documentation section 3.1](https://www.kernel.org/doc/Documentation/filesystems/proc.txt).
@@ -278,7 +278,7 @@ For more information on how these two settings work together, see [the memory cg
     "oomScoreAdj": 100
 ```
 
-#### Memory
+#### <a name="configLinuxMemory" />Memory
 
 **`memory`** (object, OPTIONAL) represents the cgroup subsystem `memory` and it's used to set limits on the container's memory usage.
 For more information, see [the memory cgroup man page][cgroup-v1-memory].
@@ -310,7 +310,7 @@ The following parameters can be specified to setup the controller:
     }
 ```
 
-#### CPU
+#### <a name="configLinuxCPU" />CPU
 
 **`cpu`** (object, OPTIONAL) represents the cgroup subsystems `cpu` and `cpusets`.
 For more information, see [the cpusets cgroup man page][cgroup-v1-cpusets].
@@ -345,7 +345,7 @@ The following parameters can be specified to setup the controller:
     }
 ```
 
-#### Block IO Controller
+#### <a name="configLinuxBlockIO" />Block IO
 
 **`blockIO`** (object, OPTIONAL) represents the cgroup subsystem `blkio` which implements the block IO controller.
 For more information, see [the kernel cgroups documentation about blkio][cgroup-v1-blkio].
@@ -404,7 +404,7 @@ The following parameters can be specified to setup the controller:
     }
 ```
 
-#### Huge page limits
+#### <a name="configLinuxHugePageLimits" />Huge page limits
 
 **`hugepageLimits`** (array of objects, OPTIONAL) represents the `hugetlb` controller which allows to limit the
 HugeTLB usage per control group and enforces the controller limit during page fault.
@@ -427,7 +427,7 @@ Each entry has the following structure:
    ]
 ```
 
-#### Network
+#### <a name="configLinuxNetwork" />Network
 
 **`network`** (object, OPTIONAL) represents the cgroup subsystems `net_cls` and `net_prio`.
 For more information, see [the net\_cls cgroup man page][cgroup-v1-net-cls] and [the net\_prio cgroup man page][cgroup-v1-net-prio].
@@ -459,7 +459,7 @@ The following parameters can be specified to setup the controller:
    }
 ```
 
-#### PIDs
+#### <a name="configLinuxPIDS" />PIDs
 
 **`pids`** (object, OPTIONAL) represents the cgroup subsystem `pids`.
 For more information, see [the pids cgroup man page][cgroup-v1-pids].
@@ -476,7 +476,7 @@ The following parameters can be specified to setup the controller:
    }
 ```
 
-## Sysctl
+## <a name="configLinuxSysctl" />Sysctl
 
 **`sysctl`** (object, OPTIONAL) allows kernel parameters to be modified at runtime for the container.
 For more information, see [the man page](http://man7.org/linux/man-pages/man8/sysctl.8.html)
@@ -490,7 +490,7 @@ For more information, see [the man page](http://man7.org/linux/man-pages/man8/sy
    }
 ```
 
-## seccomp
+## <a name="configLinuxSeccomp" />Seccomp
 
 Seccomp provides application sandboxing mechanism in the Linux kernel.
 Seccomp configuration allows one to configure actions to take for matched syscalls and furthermore also allows matching on values passed as arguments to syscalls.
@@ -554,7 +554,7 @@ Operator Constants:
    }
 ```
 
-## Rootfs Mount Propagation
+## <a name="configLinuxRootfsMountPropagation" />Rootfs Mount Propagation
 
 **`rootfsPropagation`** (string, OPTIONAL) sets the rootfs's mount propagation.
 Its value is either slave, private, or shared.
@@ -566,7 +566,7 @@ Its value is either slave, private, or shared.
     "rootfsPropagation": "slave",
 ```
 
-## Masked Paths
+## <a name="configLinuxMaskedPaths" />Masked Paths
 
 **`maskedPaths`** (array of strings, OPTIONAL) will mask over the provided paths inside the container so that they cannot be read.
 The values MUST be absolute paths in the [container namespace][container-namespace2].
@@ -579,7 +579,7 @@ The values MUST be absolute paths in the [container namespace][container-namespa
     ]
 ```
 
-## Readonly Paths
+## <a name="configLinuxReadonlyPaths" />Readonly Paths
 
 **`readonlyPaths`** (array of strings, OPTIONAL) will set the provided paths as readonly inside the container.
 The values MUST be absolute paths in the [container namespace][container-namespace2].
@@ -592,7 +592,7 @@ The values MUST be absolute paths in the [container namespace][container-namespa
     ]
 ```
 
-## Mount Label
+## <a name"configLinuxMountLabel" />Mount Label
 
 **`mountLabel`** (string, OPTIONAL) will set the Selinux context for the mounts in the container.
 

config.md

@@ -1,4 +1,4 @@
-# Container Configuration file
+# <a name="containerConfigurationFile" />Container Configuration file
 
 The container's top-level directory MUST contain a configuration file called `config.json`.
 The canonical schema is defined in this document, but there is a JSON Schema in [`schema/config-schema.json`](schema/config-schema.json) and Go bindings in [`specs-go/config.go`](specs-go/config.go).
@@ -13,7 +13,7 @@ Platform-specific fields are identified as such.
 For all platform-specific configuration values, the scope defined below in the [Platform-specific configuration](#platform-specific-configuration) section applies.
 
 
-## Specification version
+## <a name="configSpecificationVersion" />Specification version
 
 * **`ociVersion`** (string, REQUIRED) MUST be in [SemVer v2.0.0](http://semver.org/spec/v2.0.0.html) format and specifies the version of the Open Container Runtime Specification with which the bundle complies.
 The Open Container Runtime Specification follows semantic versioning and retains forward and backward compatibility within major versions.
@@ -25,7 +25,7 @@ For example, if a configuration is compliant with version 1.1 of this specificat
     "ociVersion": "0.1.0"
 ```
 
-## Root Configuration
+## <a name="configRoot" />Root
 
 **`root`** (object, REQUIRED) specifies the container's root filesystem.
 
@@ -44,7 +44,7 @@ For example, if a configuration is compliant with version 1.1 of this specificat
 }
 ```
 
-## Mounts
+## <a name="configMounts" />Mounts
 
 **`mounts`** (array, OPTIONAL) specifies additional mounts beyond [`root`](#root-configuration).
 The runtime MUST mount entries in the listed order.
@@ -118,7 +118,7 @@ For Windows, see links for details about [mountvol](http://ss64.com/nt/mountvol.
 ]
 ```
 
-## Process
+## <a name="configProcess" />Process
 
 **`process`** (object, REQUIRED) specifies the container process.
 
@@ -158,11 +158,11 @@ For Linux-based systems the process structure supports the following process spe
 * **`selinuxLabel`** (string, OPTIONAL) specifies the SELinux label to be applied to the processes in the container.
   For more information about SELinux, see  [SELinux documentation](http://selinuxproject.org/page/Main_Page)
 
-### User
+### <a name="configUser" />User
 
 The user for the process is a platform-specific structure that allows specific control over which user the process runs as.
 
-#### Linux and Solaris User
+#### <a name="configLinuxAndSolarisUser" />Linux and Solaris User
 
 For Linux and Solaris based systems the user structure has the following fields:
 
@@ -255,7 +255,7 @@ _Note: symbolic name for uid and gid, such as uname and gname respectively, are
 }
 ```
 
-#### Windows User
+#### <a name="configWindowsUser" />Windows User
 
 For Windows based systems the user structure has the following fields:
 
@@ -280,7 +280,7 @@ For Windows based systems the user structure has the following fields:
 ```
 
 
-## Hostname
+## <a name="configHostname" />Hostname
 
 * **`hostname`** (string, OPTIONAL) specifies the container's hostname as seen by processes running inside the container.
   On Linux, for example, this will change the hostname in the [container][container-namespace] [UTS namespace][uts-namespace].
@@ -292,7 +292,7 @@ For Windows based systems the user structure has the following fields:
 "hostname": "mrsdalloway"
 ```
 
-## Platform
+## <a name="configPlatform" />Platform
 
 **`platform`** (object, REQUIRED) specifies the configuration's target platform.
 
@@ -314,7 +314,7 @@ For Windows based systems the user structure has the following fields:
 }
 ```
 
-## Platform-specific configuration
+## <a name="configPlatformSpecificConfiguration" />Platform-specific configuration
 
 [**`platform.os`**](#platform) is used to specify platform-specific configuration.
 Runtime implementations MAY support any valid values for platform-specific fields as part of this configuration.
@@ -345,7 +345,7 @@ Implementations MUST error out when invalid values are encountered and MUST gene
 }
 ```
 
-## Hooks
+## <a name="configHooks" />Hooks
 
 Hooks allow for the configuration of custom actions related to the [lifecycle](runtime.md#lifecycle) of the container.
 
@@ -366,21 +366,21 @@ Hooks allow users to specify programs to run before or after various lifecycle e
 Hooks MUST be called in the listed order.
 The [state](runtime.md#state) of the container MUST be passed to hooks over stdin so that they may do work appropriate to the current state of the container.
 
-### Prestart
+### <a name="configHooksPrestart" />Prestart
 
 The pre-start hooks MUST be called after the container has been created, but before the user supplied command is executed.
 On Linux, for example, they are called after the container namespaces are created, so they provide an opportunity to customize the container (e.g. the network namespace could be specified in this hook).
 
 If a hook returns a non-zero exit code, an error including the exit code and the stderr MUST be returned to the caller and the container MUST be destroyed.
 
-### Poststart
+### <a name="configHooksPoststart" />Poststart
 
 The post-start hooks MUST be called after the user process is started.
 For example, this hook can notify the user that the container process is spawned.
 
 If a hook returns a non-zero exit code, then an error MUST be logged and the remaining hooks are executed.
 
-### Poststop
+### <a name="configHooksPoststop" />Poststop
 
 The post-stop hooks MUST be called after the container process is stopped.
 Cleanup or debugging functions are examples of such a hook.
@@ -415,7 +415,7 @@ If a hook returns a non-zero exit code, then an error MUST be logged and the rem
     }
 ```
 
-## Annotations
+## <a name="configAnnotations" />Annotations
 
 **`annotations`** (object, OPTIONAL) contains arbitrary metadata for the container.
 This information MAY be structured or unstructured.
@@ -438,7 +438,7 @@ Values MAY be an empty string.
 }
 ```
 
-## Extensibility
+## <a name="configExtensibility" />Extensibility
 Implementations that are reading/processing this configuration file MUST NOT generate an error if they encounter an unknown property.
 Instead they MUST ignore unknown properties.