This spec is not directly relevant for the image spec, and the Docker
documentation no longer includes the actual specification.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Prior to release 25.0.0, the bridge in an internal network was assigned
an IP address - making the internal network accessible from the host,
giving containers on the network access to anything listening on the
bridge's address (or INADDR_ANY on the host).
This change restores that behaviour. It does not restore the default
route that was configured in the container, because packets sent outside
the internal network's subnet have always been dropped. So, a 'connect()'
to an address outside the subnet will still fail fast.
Signed-off-by: Rob Murray <rob.murray@docker.com>
Replace regex matching/replacement and re-reading of generated files
with a simple parser, and struct to remember and manipulate the file
content.
Annotate the generated file with a header comment saying the file is
generated, but can be modified, and a trailing comment describing how
the file was generated and listing external nameservers.
Always start with the host's resolv.conf file, whether generating config
for host networking, or with/without an internal resolver - rather than
editing a file previously generated for a different use-case.
Resolves an issue where rewrites of the generated file resulted in
default IPv6 nameservers being unnecessarily added to the config.
Signed-off-by: Rob Murray <rob.murray@docker.com>
This const contains the minimum API version that can be supported by the
API server. The daemon is currently configured to use the same version,
but we may increment the _configured_ minimum version when deprecating
old API versions in future.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Commit 08e4e88482 (Docker Engine v25.0.0)
deprecated API version v1.23 and lower, but older API versions could be
enabled through the DOCKER_MIN_API_VERSION environment variable.
This patch removes all support for API versions < v1.24.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
API v1.20 (Docker Engine v1.11.0) and older allowed a HostConfig to be passed
when starting a container. This feature was deprecated in API v1.21 (Docker
Engine v1.10.0) in 3e7405aea8, and removed in
API v1.23 (Docker Engine v1.12.0) in commit 0a8386c8be.
API v1.23 and older are deprecated, and this patch removes the feature.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Commit 322e2a7d05 changed the format of errors
returned by the API to be in JSON format for API v1.24. Older versions of
the API returned errors in plain-text format.
API v1.23 and older are deprecated, so we can remove support for plain-text
error responses.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This endpoint was deprecated in API v1.20 (Docker Engine v1.8.0) in
commit db9cc91a9e, in favor of the
`PUT /containers/{id}/archive` and `HEAD /containers/{id}/archive`
endpoints, and disabled in API v1.24 (Docker Engine v1.12.0) through
commit 428328908d.
This patch removes the endpoint, and the associated `daemon.ContainerCopy`
method in the backend.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
API v1.21 (Docker Engine v1.9.0) enforces the request to have a JSON
content-type on exec start (see 45dc57f229).
An exception was added in 0b5e628e14 to
make this check conditional (supporting API < 1.21).
API v1.23 and older are deprecated, and this patch removes the feature.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
API v1.23 and older are deprecated, so we can remove the code to adjust
responses for API v1.20 and lower.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The TestInspectAPIContainerResponse mentioned that Windows does not
support API versions before v1.25.
While technically, no stable release existed for Windows with API versions
before that (see f811d5b128), API version
v1.24 was enabled in e4af39aeb3, to have
a consistend fallback version for API version negotiation.
This patch updates the test to reflect that change.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
API v1.23 and older are deprecated, so we can remove the code to adjust
responses for API v1.19 and lower.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
API v1.20 and up produces an error when signalling / killing a non-running
container (see c92377e300). Older API versions
allowed this, and an exception was added in 621e3d8587.
API v1.23 and older are deprecated, so we can remove this handling.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
API versions before 1.19 allowed CpuShares that were greater than the maximum
or less than the minimum supported by the kernel, and relied on the kernel to
do the right thing.
Commit ed39fbeb2a introduced code to adjust the
CPU shares to be within the accepted range when using API version 1.18 or
lower.
API v1.23 and older are deprecated, so we can remove support for this
functionality.
Currently, there's no validation for CPU shares to be within an acceptable
range; a TODO was added to add validation for this option, and to use the
`linuxMinCPUShares` and `linuxMaxCPUShares` consts for this.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The "pull" option was added in API v1.16 (Docker Engine v1.4.0) in commit
054e57a622, which gated the option by API
version.
API v1.23 and older are deprecated, so we can remove the gate.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The "rm" option was made the default in API v1.12 (Docker Engine v1.0.0)
in commit b60d647172, and "force-rm" was
added in 667e2bd4ea.
API v1.23 and older are deprecated, so we can remove these gates.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The "pause" flag was added in API v1.13 (Docker Engine v1.1.0), and is
enabled by default (see 17d870bed5).
API v1.23 and older are deprecated, so we can remove the version-gate.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Inspect and history used two different ways to find the present images.
This made history fail in some cases where image inspect would work (if
a configuration of a manifest wasn't found in the content store).
With this change we now use the same logic for both inspect and history.
Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>
Add this syscall to match the profile in containerd
containerd: a6e52c74fa
libseccomp: 53267af3fb
kernel: 9f6c532f59
futex: Add sys_futex_wake()
To complement sys_futex_waitv() add sys_futex_wake(). This syscall
implements what was previously known as FUTEX_WAKE_BITSET except it
uses 'unsigned long' for the bitmask and takes FUTEX2 flags.
The 'unsigned long' allows FUTEX2_SIZE_U64 on 64bit platforms.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Add this syscall to match the profile in containerd
containerd: a6e52c74fa
libseccomp: 53267af3fb
kernel: cb8c4312af
futex: Add sys_futex_wait()
To complement sys_futex_waitv()/wake(), add sys_futex_wait(). This
syscall implements what was previously known as FUTEX_WAIT_BITSET
except it uses 'unsigned long' for the value and bitmask arguments,
takes timespec and clockid_t arguments for the absolute timeout and
uses FUTEX2 flags.
The 'unsigned long' allows FUTEX2_SIZE_U64 on 64bit platforms.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Add this syscall to match the profile in containerd
containerd: a6e52c74fa
libseccomp: 53267af3fb
kernel: 0f4b5f9722
futex: Add sys_futex_requeue()
Finish off the 'simple' futex2 syscall group by adding
sys_futex_requeue(). Unlike sys_futex_{wait,wake}() its arguments are
too numerous to fit into a regular syscall. As such, use struct
futex_waitv to pass the 'source' and 'destination' futexes to the
syscall.
This syscall implements what was previously known as FUTEX_CMP_REQUEUE
and uses {val, uaddr, flags} for source and {uaddr, flags} for
destination.
This design explicitly allows requeueing between different types of
futex by having a different flags word per uaddr.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Add this syscall to match the profile in containerd
containerd: a6e52c74fa
libseccomp: 53267af3fb
kernel: c35559f94e
x86/shstk: Introduce map_shadow_stack syscall
When operating with shadow stacks enabled, the kernel will automatically
allocate shadow stacks for new threads, however in some cases userspace
will need additional shadow stacks. The main example of this is the
ucontext family of functions, which require userspace allocating and
pivoting to userspace managed stacks.
Unlike most other user memory permissions, shadow stacks need to be
provisioned with special data in order to be useful. They need to be setup
with a restore token so that userspace can pivot to them via the RSTORSSP
instruction. But, the security design of shadow stacks is that they
should not be written to except in limited circumstances. This presents a
problem for userspace, as to how userspace can provision this special
data, without allowing for the shadow stack to be generally writable.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Add this syscall to match the profile in containerd
containerd: a6e52c74fa
libseccomp: 53267af3fb
kernel: 09da082b07
fs: Add fchmodat2()
On the userspace side fchmodat(3) is implemented as a wrapper
function which implements the POSIX-specified interface. This
interface differs from the underlying kernel system call, which does not
have a flags argument. Most implementations require procfs [1][2].
There doesn't appear to be a good userspace workaround for this issue
but the implementation in the kernel is pretty straight-forward.
The new fchmodat2() syscall allows to pass the AT_SYMLINK_NOFOLLOW flag,
unlike existing fchmodat.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Add this syscall to match the profile in containerd
containerd: a6e52c74fa
libseccomp: 53267af3fb
kernel: cf264e1329
NAME
cachestat - query the page cache statistics of a file.
SYNOPSIS
#include <sys/mman.h>
struct cachestat_range {
__u64 off;
__u64 len;
};
struct cachestat {
__u64 nr_cache;
__u64 nr_dirty;
__u64 nr_writeback;
__u64 nr_evicted;
__u64 nr_recently_evicted;
};
int cachestat(unsigned int fd, struct cachestat_range *cstat_range,
struct cachestat *cstat, unsigned int flags);
DESCRIPTION
cachestat() queries the number of cached pages, number of dirty
pages, number of pages marked for writeback, number of evicted
pages, number of recently evicted pages, in the bytes range given by
`off` and `len`.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This syscall is gated by CAP_SYS_NICE, matching the profile in containerd.
containerd: a6e52c74fa
libseccomp: d83cb7ac25
kernel: c6018b4b25
mm/mempolicy: add set_mempolicy_home_node syscall
This syscall can be used to set a home node for the MPOL_BIND and
MPOL_PREFERRED_MANY memory policy. Users should use this syscall after
setting up a memory policy for the specified range as shown below.
mbind(p, nr_pages * page_size, MPOL_BIND, new_nodes->maskp,
new_nodes->size + 1, 0);
sys_set_mempolicy_home_node((unsigned long)p, nr_pages * page_size,
home_node, 0);
The syscall allows specifying a home node/preferred node from which
kernel will fulfill memory allocation requests first.
...
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The compatibility depends on whether `hyperv` or `process` container
isolation is used.
This fixes cache not being used when building images based on older
Windows versions on a newer Windows host.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
