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Port osbuild/images v0.33.0 with dot-notation to composer

Browse source 
Update the osbuild/images to the version which introduces "dot notation"
for distro release versions.

 - Replace all uses of distroregistry by distrofactory.
 - Delete local version of reporegistry and use the one from the
   osbuild/images.
 - Weldr: unify `createWeldrAPI()` and `createWeldrAPI2()` into a single
   `createTestWeldrAPI()` function`.
 - store/fixture: rework fixtures to allow overriding the host distro
   name and host architecture name. A cleanup function to restore the
   host distro and arch names is always part of the fixture struct.
 - Delete `distro_mock` package, since it is no longer used.
 - Bump the required version of osbuild to 98, because the OSCAP
   customization is using the 'compress_results' stage option, which is
   not available in older versions of osbuild.

Signed-off-by: Tomáš Hozza <thozza@redhat.com>
This commit is contained in:
Tomáš Hozza 2024-01-08 17:58:49 +01:00 • committed by Achilleas Koutsou
parent f6ff8c40dd
commit 625b1578fa
1166 changed files with 154457 additions and 5508 deletions
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Apache License
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/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package stats

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file {
name: "github.com/containerd/cgroups/cgroup1/stats/metrics.proto"
package: "io.containerd.cgroups.v1"
message_type {
name: "Metrics"
field {
name: "hugetlb"
number: 1
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.HugetlbStat"
json_name: "hugetlb"
}
field {
name: "pids"
number: 2
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.PidsStat"
json_name: "pids"
}
field {
name: "cpu"
number: 3
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.CPUStat"
json_name: "cpu"
}
field {
name: "memory"
number: 4
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.MemoryStat"
json_name: "memory"
}
field {
name: "blkio"
number: 5
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.BlkIOStat"
json_name: "blkio"
}
field {
name: "rdma"
number: 6
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.RdmaStat"
json_name: "rdma"
}
field {
name: "network"
number: 7
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.NetworkStat"
json_name: "network"
}
field {
name: "cgroup_stats"
number: 8
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.CgroupStats"
json_name: "cgroupStats"
}
field {
name: "memory_oom_control"
number: 9
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.MemoryOomControl"
json_name: "memoryOomControl"
}
}
message_type {
name: "HugetlbStat"
field {
name: "usage"
number: 1
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "usage"
}
field {
name: "max"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "max"
}
field {
name: "failcnt"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "failcnt"
}
field {
name: "pagesize"
number: 4
label: LABEL_OPTIONAL
type: TYPE_STRING
json_name: "pagesize"
}
}
message_type {
name: "PidsStat"
field {
name: "current"
number: 1
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "current"
}
field {
name: "limit"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "limit"
}
}
message_type {
name: "CPUStat"
field {
name: "usage"
number: 1
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.CPUUsage"
json_name: "usage"
}
field {
name: "throttling"
number: 2
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.Throttle"
json_name: "throttling"
}
}
message_type {
name: "CPUUsage"
field {
name: "total"
number: 1
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "total"
}
field {
name: "kernel"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "kernel"
}
field {
name: "user"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "user"
}
field {
name: "per_cpu"
number: 4
label: LABEL_REPEATED
type: TYPE_UINT64
json_name: "perCpu"
}
}
message_type {
name: "Throttle"
field {
name: "periods"
number: 1
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "periods"
}
field {
name: "throttled_periods"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "throttledPeriods"
}
field {
name: "throttled_time"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "throttledTime"
}
}
message_type {
name: "MemoryStat"
field {
name: "cache"
number: 1
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "cache"
}
field {
name: "rss"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "rss"
}
field {
name: "rss_huge"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "rssHuge"
}
field {
name: "mapped_file"
number: 4
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "mappedFile"
}
field {
name: "dirty"
number: 5
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "dirty"
}
field {
name: "writeback"
number: 6
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "writeback"
}
field {
name: "pg_pg_in"
number: 7
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "pgPgIn"
}
field {
name: "pg_pg_out"
number: 8
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "pgPgOut"
}
field {
name: "pg_fault"
number: 9
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "pgFault"
}
field {
name: "pg_maj_fault"
number: 10
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "pgMajFault"
}
field {
name: "inactive_anon"
number: 11
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "inactiveAnon"
}
field {
name: "active_anon"
number: 12
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "activeAnon"
}
field {
name: "inactive_file"
number: 13
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "inactiveFile"
}
field {
name: "active_file"
number: 14
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "activeFile"
}
field {
name: "unevictable"
number: 15
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "unevictable"
}
field {
name: "hierarchical_memory_limit"
number: 16
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "hierarchicalMemoryLimit"
}
field {
name: "hierarchical_swap_limit"
number: 17
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "hierarchicalSwapLimit"
}
field {
name: "total_cache"
number: 18
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalCache"
}
field {
name: "total_rss"
number: 19
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalRss"
}
field {
name: "total_rss_huge"
number: 20
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalRssHuge"
}
field {
name: "total_mapped_file"
number: 21
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalMappedFile"
}
field {
name: "total_dirty"
number: 22
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalDirty"
}
field {
name: "total_writeback"
number: 23
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalWriteback"
}
field {
name: "total_pg_pg_in"
number: 24
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalPgPgIn"
}
field {
name: "total_pg_pg_out"
number: 25
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalPgPgOut"
}
field {
name: "total_pg_fault"
number: 26
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalPgFault"
}
field {
name: "total_pg_maj_fault"
number: 27
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalPgMajFault"
}
field {
name: "total_inactive_anon"
number: 28
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalInactiveAnon"
}
field {
name: "total_active_anon"
number: 29
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalActiveAnon"
}
field {
name: "total_inactive_file"
number: 30
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalInactiveFile"
}
field {
name: "total_active_file"
number: 31
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalActiveFile"
}
field {
name: "total_unevictable"
number: 32
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "totalUnevictable"
}
field {
name: "usage"
number: 33
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.MemoryEntry"
json_name: "usage"
}
field {
name: "swap"
number: 34
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.MemoryEntry"
json_name: "swap"
}
field {
name: "kernel"
number: 35
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.MemoryEntry"
json_name: "kernel"
}
field {
name: "kernel_tcp"
number: 36
label: LABEL_OPTIONAL
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.MemoryEntry"
json_name: "kernelTcp"
}
}
message_type {
name: "MemoryEntry"
field {
name: "limit"
number: 1
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "limit"
}
field {
name: "usage"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "usage"
}
field {
name: "max"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "max"
}
field {
name: "failcnt"
number: 4
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "failcnt"
}
}
message_type {
name: "MemoryOomControl"
field {
name: "oom_kill_disable"
number: 1
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "oomKillDisable"
}
field {
name: "under_oom"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "underOom"
}
field {
name: "oom_kill"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "oomKill"
}
}
message_type {
name: "BlkIOStat"
field {
name: "io_service_bytes_recursive"
number: 1
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.BlkIOEntry"
json_name: "ioServiceBytesRecursive"
}
field {
name: "io_serviced_recursive"
number: 2
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.BlkIOEntry"
json_name: "ioServicedRecursive"
}
field {
name: "io_queued_recursive"
number: 3
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.BlkIOEntry"
json_name: "ioQueuedRecursive"
}
field {
name: "io_service_time_recursive"
number: 4
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.BlkIOEntry"
json_name: "ioServiceTimeRecursive"
}
field {
name: "io_wait_time_recursive"
number: 5
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.BlkIOEntry"
json_name: "ioWaitTimeRecursive"
}
field {
name: "io_merged_recursive"
number: 6
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.BlkIOEntry"
json_name: "ioMergedRecursive"
}
field {
name: "io_time_recursive"
number: 7
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.BlkIOEntry"
json_name: "ioTimeRecursive"
}
field {
name: "sectors_recursive"
number: 8
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.BlkIOEntry"
json_name: "sectorsRecursive"
}
}
message_type {
name: "BlkIOEntry"
field {
name: "op"
number: 1
label: LABEL_OPTIONAL
type: TYPE_STRING
json_name: "op"
}
field {
name: "device"
number: 2
label: LABEL_OPTIONAL
type: TYPE_STRING
json_name: "device"
}
field {
name: "major"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "major"
}
field {
name: "minor"
number: 4
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "minor"
}
field {
name: "value"
number: 5
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "value"
}
}
message_type {
name: "RdmaStat"
field {
name: "current"
number: 1
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.RdmaEntry"
json_name: "current"
}
field {
name: "limit"
number: 2
label: LABEL_REPEATED
type: TYPE_MESSAGE
type_name: ".io.containerd.cgroups.v1.RdmaEntry"
json_name: "limit"
}
}
message_type {
name: "RdmaEntry"
field {
name: "device"
number: 1
label: LABEL_OPTIONAL
type: TYPE_STRING
json_name: "device"
}
field {
name: "hca_handles"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT32
json_name: "hcaHandles"
}
field {
name: "hca_objects"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT32
json_name: "hcaObjects"
}
}
message_type {
name: "NetworkStat"
field {
name: "name"
number: 1
label: LABEL_OPTIONAL
type: TYPE_STRING
json_name: "name"
}
field {
name: "rx_bytes"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "rxBytes"
}
field {
name: "rx_packets"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "rxPackets"
}
field {
name: "rx_errors"
number: 4
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "rxErrors"
}
field {
name: "rx_dropped"
number: 5
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "rxDropped"
}
field {
name: "tx_bytes"
number: 6
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "txBytes"
}
field {
name: "tx_packets"
number: 7
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "txPackets"
}
field {
name: "tx_errors"
number: 8
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "txErrors"
}
field {
name: "tx_dropped"
number: 9
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "txDropped"
}
}
message_type {
name: "CgroupStats"
field {
name: "nr_sleeping"
number: 1
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "nrSleeping"
}
field {
name: "nr_running"
number: 2
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "nrRunning"
}
field {
name: "nr_stopped"
number: 3
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "nrStopped"
}
field {
name: "nr_uninterruptible"
number: 4
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "nrUninterruptible"
}
field {
name: "nr_io_wait"
number: 5
label: LABEL_OPTIONAL
type: TYPE_UINT64
json_name: "nrIoWait"
}
}
options {
go_package: "github.com/containerd/cgroups/cgroup1/stats"
}
syntax: "proto3"
}

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syntax = "proto3";
package io.containerd.cgroups.v1;
option go_package = "github.com/containerd/cgroups/cgroup1/stats";
message Metrics {
repeated HugetlbStat hugetlb = 1;
PidsStat pids = 2;
CPUStat cpu = 3;
MemoryStat memory = 4;
BlkIOStat blkio = 5;
RdmaStat rdma = 6;
repeated NetworkStat network = 7;
CgroupStats cgroup_stats = 8;
MemoryOomControl memory_oom_control = 9;
}
message HugetlbStat {
uint64 usage = 1;
uint64 max = 2;
uint64 failcnt = 3;
string pagesize = 4;
}
message PidsStat {
uint64 current = 1;
uint64 limit = 2;
}
message CPUStat {
CPUUsage usage = 1;
Throttle throttling = 2;
}
message CPUUsage {
// values in nanoseconds
uint64 total = 1;
uint64 kernel = 2;
uint64 user = 3;
repeated uint64 per_cpu = 4;
}
message Throttle {
uint64 periods = 1;
uint64 throttled_periods = 2;
uint64 throttled_time = 3;
}
message MemoryStat {
uint64 cache = 1;
uint64 rss = 2;
uint64 rss_huge = 3;
uint64 mapped_file = 4;
uint64 dirty = 5;
uint64 writeback = 6;
uint64 pg_pg_in = 7;
uint64 pg_pg_out = 8;
uint64 pg_fault = 9;
uint64 pg_maj_fault = 10;
uint64 inactive_anon = 11;
uint64 active_anon = 12;
uint64 inactive_file = 13;
uint64 active_file = 14;
uint64 unevictable = 15;
uint64 hierarchical_memory_limit = 16;
uint64 hierarchical_swap_limit = 17;
uint64 total_cache = 18;
uint64 total_rss = 19;
uint64 total_rss_huge = 20;
uint64 total_mapped_file = 21;
uint64 total_dirty = 22;
uint64 total_writeback = 23;
uint64 total_pg_pg_in = 24;
uint64 total_pg_pg_out = 25;
uint64 total_pg_fault = 26;
uint64 total_pg_maj_fault = 27;
uint64 total_inactive_anon = 28;
uint64 total_active_anon = 29;
uint64 total_inactive_file = 30;
uint64 total_active_file = 31;
uint64 total_unevictable = 32;
MemoryEntry usage = 33;
MemoryEntry swap = 34;
MemoryEntry kernel = 35;
MemoryEntry kernel_tcp = 36;
}
message MemoryEntry {
uint64 limit = 1;
uint64 usage = 2;
uint64 max = 3;
uint64 failcnt = 4;
}
message MemoryOomControl {
uint64 oom_kill_disable = 1;
uint64 under_oom = 2;
uint64 oom_kill = 3;
}
message BlkIOStat {
repeated BlkIOEntry io_service_bytes_recursive = 1;
repeated BlkIOEntry io_serviced_recursive = 2;
repeated BlkIOEntry io_queued_recursive = 3;
repeated BlkIOEntry io_service_time_recursive = 4;
repeated BlkIOEntry io_wait_time_recursive = 5;
repeated BlkIOEntry io_merged_recursive = 6;
repeated BlkIOEntry io_time_recursive = 7;
repeated BlkIOEntry sectors_recursive = 8;
}
message BlkIOEntry {
string op = 1;
string device = 2;
uint64 major = 3;
uint64 minor = 4;
uint64 value = 5;
}
message RdmaStat {
repeated RdmaEntry current = 1;
repeated RdmaEntry limit = 2;
}
message RdmaEntry {
string device = 1;
uint32 hca_handles = 2;
uint32 hca_objects = 3;
}
message NetworkStat {
string name = 1;
uint64 rx_bytes = 2;
uint64 rx_packets = 3;
uint64 rx_errors = 4;
uint64 rx_dropped = 5;
uint64 tx_bytes = 6;
uint64 tx_packets = 7;
uint64 tx_errors = 8;
uint64 tx_dropped = 9;
}
// CgroupStats exports per-cgroup statistics.
message CgroupStats {
// number of tasks sleeping
uint64 nr_sleeping = 1;
// number of tasks running
uint64 nr_running = 2;
// number of tasks in stopped state
uint64 nr_stopped = 3;
// number of tasks in uninterruptible state
uint64 nr_uninterruptible = 4;
// number of tasks waiting on IO
uint64 nr_io_wait = 5;
}

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Apache License
Version 2.0, January 2004
https://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
Copyright The containerd Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

16
vendor/github.com/containerd/containerd/NOTICE generated vendored Normal file
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Docker
Copyright 2012-2015 Docker, Inc.
This product includes software developed at Docker, Inc. (https://www.docker.com).
The following is courtesy of our legal counsel:
Use and transfer of Docker may be subject to certain restrictions by the
United States and other governments.
It is your responsibility to ensure that your use and/or transfer does not
violate applicable laws.
For more information, please see https://www.bis.doc.gov
See also https://www.apache.org/dev/crypto.html and/or seek legal counsel.

92
vendor/github.com/containerd/containerd/errdefs/errors.go generated vendored Normal file
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/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// Package errdefs defines the common errors used throughout containerd
// packages.
//
// Use with fmt.Errorf to add context to an error.
//
// To detect an error class, use the IsXXX functions to tell whether an error
// is of a certain type.
//
// The functions ToGRPC and FromGRPC can be used to map server-side and
// client-side errors to the correct types.
package errdefs
import (
"context"
"errors"
)
// Definitions of common error types used throughout containerd. All containerd
// errors returned by most packages will map into one of these errors classes.
// Packages should return errors of these types when they want to instruct a
// client to take a particular action.
//
// For the most part, we just try to provide local grpc errors. Most conditions
// map very well to those defined by grpc.
var (
ErrUnknown = errors.New("unknown") // used internally to represent a missed mapping.
ErrInvalidArgument = errors.New("invalid argument")
ErrNotFound = errors.New("not found")
ErrAlreadyExists = errors.New("already exists")
ErrFailedPrecondition = errors.New("failed precondition")
ErrUnavailable = errors.New("unavailable")
ErrNotImplemented = errors.New("not implemented") // represents not supported and unimplemented
)
// IsInvalidArgument returns true if the error is due to an invalid argument
func IsInvalidArgument(err error) bool {
return errors.Is(err, ErrInvalidArgument)
}
// IsNotFound returns true if the error is due to a missing object
func IsNotFound(err error) bool {
return errors.Is(err, ErrNotFound)
}
// IsAlreadyExists returns true if the error is due to an already existing
// metadata item
func IsAlreadyExists(err error) bool {
return errors.Is(err, ErrAlreadyExists)
}
// IsFailedPrecondition returns true if an operation could not proceed to the
// lack of a particular condition
func IsFailedPrecondition(err error) bool {
return errors.Is(err, ErrFailedPrecondition)
}
// IsUnavailable returns true if the error is due to a resource being unavailable
func IsUnavailable(err error) bool {
return errors.Is(err, ErrUnavailable)
}
// IsNotImplemented returns true if the error is due to not being implemented
func IsNotImplemented(err error) bool {
return errors.Is(err, ErrNotImplemented)
}
// IsCanceled returns true if the error is due to `context.Canceled`.
func IsCanceled(err error) bool {
return errors.Is(err, context.Canceled)
}
// IsDeadlineExceeded returns true if the error is due to
// `context.DeadlineExceeded`.
func IsDeadlineExceeded(err error) bool {
return errors.Is(err, context.DeadlineExceeded)
}

147
vendor/github.com/containerd/containerd/errdefs/grpc.go generated vendored Normal file
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/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package errdefs
import (
"context"
"fmt"
"strings"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
// ToGRPC will attempt to map the backend containerd error into a grpc error,
// using the original error message as a description.
//
// Further information may be extracted from certain errors depending on their
// type.
//
// If the error is unmapped, the original error will be returned to be handled
// by the regular grpc error handling stack.
func ToGRPC(err error) error {
if err == nil {
return nil
}
if isGRPCError(err) {
// error has already been mapped to grpc
return err
}
switch {
case IsInvalidArgument(err):
return status.Errorf(codes.InvalidArgument, err.Error())
case IsNotFound(err):
return status.Errorf(codes.NotFound, err.Error())
case IsAlreadyExists(err):
return status.Errorf(codes.AlreadyExists, err.Error())
case IsFailedPrecondition(err):
return status.Errorf(codes.FailedPrecondition, err.Error())
case IsUnavailable(err):
return status.Errorf(codes.Unavailable, err.Error())
case IsNotImplemented(err):
return status.Errorf(codes.Unimplemented, err.Error())
case IsCanceled(err):
return status.Errorf(codes.Canceled, err.Error())
case IsDeadlineExceeded(err):
return status.Errorf(codes.DeadlineExceeded, err.Error())
}
return err
}
// ToGRPCf maps the error to grpc error codes, assembling the formatting string
// and combining it with the target error string.
//
// This is equivalent to errdefs.ToGRPC(fmt.Errorf("%s: %w", fmt.Sprintf(format, args...), err))
func ToGRPCf(err error, format string, args ...interface{}) error {
return ToGRPC(fmt.Errorf("%s: %w", fmt.Sprintf(format, args...), err))
}
// FromGRPC returns the underlying error from a grpc service based on the grpc error code
func FromGRPC(err error) error {
if err == nil {
return nil
}
var cls error // divide these into error classes, becomes the cause
switch code(err) {
case codes.InvalidArgument:
cls = ErrInvalidArgument
case codes.AlreadyExists:
cls = ErrAlreadyExists
case codes.NotFound:
cls = ErrNotFound
case codes.Unavailable:
cls = ErrUnavailable
case codes.FailedPrecondition:
cls = ErrFailedPrecondition
case codes.Unimplemented:
cls = ErrNotImplemented
case codes.Canceled:
cls = context.Canceled
case codes.DeadlineExceeded:
cls = context.DeadlineExceeded
default:
cls = ErrUnknown
}
msg := rebaseMessage(cls, err)
if msg != "" {
err = fmt.Errorf("%s: %w", msg, cls)
} else {
err = cls
}
return err
}
// rebaseMessage removes the repeats for an error at the end of an error
// string. This will happen when taking an error over grpc then remapping it.
//
// Effectively, we just remove the string of cls from the end of err if it
// appears there.
func rebaseMessage(cls error, err error) string {
desc := errDesc(err)
clss := cls.Error()
if desc == clss {
return ""
}
return strings.TrimSuffix(desc, ": "+clss)
}
func isGRPCError(err error) bool {
_, ok := status.FromError(err)
return ok
}
func code(err error) codes.Code {
if s, ok := status.FromError(err); ok {
return s.Code()
}
return codes.Unknown
}
func errDesc(err error) string {
if s, ok := status.FromError(err); ok {
return s.Message()
}
return err.Error()
}

202
vendor/github.com/containerd/stargz-snapshotter/estargz/LICENSE generated vendored Normal file
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
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for any such Derivative Works as a whole, provided Your use,
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5. Submission of Contributions. Unless You explicitly state otherwise,
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whether in tort (including negligence), contract, or otherwise,
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of your accepting any such warranty or additional liability.
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replaced with your own identifying information. (Don't include
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689
vendor/github.com/containerd/stargz-snapshotter/estargz/build.go generated vendored Normal file
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@ -0,0 +1,689 @@
/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
Copyright 2019 The Go Authors. All rights reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file.
*/
package estargz
import (
"archive/tar"
"bytes"
"compress/gzip"
"context"
"errors"
"fmt"
"io"
"os"
"path"
"runtime"
"strings"
"sync"
"github.com/containerd/stargz-snapshotter/estargz/errorutil"
"github.com/klauspost/compress/zstd"
digest "github.com/opencontainers/go-digest"
"golang.org/x/sync/errgroup"
)
type options struct {
chunkSize int
compressionLevel int
prioritizedFiles []string
missedPrioritizedFiles *[]string
compression Compression
ctx context.Context
minChunkSize int
}
type Option func(o *options) error
// WithChunkSize option specifies the chunk size of eStargz blob to build.
func WithChunkSize(chunkSize int) Option {
return func(o *options) error {
o.chunkSize = chunkSize
return nil
}
}
// WithCompressionLevel option specifies the gzip compression level.
// The default is gzip.BestCompression.
// This option will be ignored if WithCompression option is used.
// See also: https://godoc.org/compress/gzip#pkg-constants
func WithCompressionLevel(level int) Option {
return func(o *options) error {
o.compressionLevel = level
return nil
}
}
// WithPrioritizedFiles option specifies the list of prioritized files.
// These files must be complete paths that are absolute or relative to "/"
// For example, all of "foo/bar", "/foo/bar", "./foo/bar" and "../foo/bar"
// are treated as "/foo/bar".
func WithPrioritizedFiles(files []string) Option {
return func(o *options) error {
o.prioritizedFiles = files
return nil
}
}
// WithAllowPrioritizeNotFound makes Build continue the execution even if some
// of prioritized files specified by WithPrioritizedFiles option aren't found
// in the input tar. Instead, this records all missed file names to the passed
// slice.
func WithAllowPrioritizeNotFound(missedFiles *[]string) Option {
return func(o *options) error {
if missedFiles == nil {
return fmt.Errorf("WithAllowPrioritizeNotFound: slice must be passed")
}
o.missedPrioritizedFiles = missedFiles
return nil
}
}
// WithCompression specifies compression algorithm to be used.
// Default is gzip.
func WithCompression(compression Compression) Option {
return func(o *options) error {
o.compression = compression
return nil
}
}
// WithContext specifies a context that can be used for clean canceleration.
func WithContext(ctx context.Context) Option {
return func(o *options) error {
o.ctx = ctx
return nil
}
}
// WithMinChunkSize option specifies the minimal number of bytes of data
// must be written in one gzip stream.
// By increasing this number, one gzip stream can contain multiple files
// and it hopefully leads to smaller result blob.
// NOTE: This adds a TOC property that old reader doesn't understand.
func WithMinChunkSize(minChunkSize int) Option {
return func(o *options) error {
o.minChunkSize = minChunkSize
return nil
}
}
// Blob is an eStargz blob.
type Blob struct {
io.ReadCloser
diffID digest.Digester
tocDigest digest.Digest
}
// DiffID returns the digest of uncompressed blob.
// It is only valid to call DiffID after Close.
func (b *Blob) DiffID() digest.Digest {
return b.diffID.Digest()
}
// TOCDigest returns the digest of uncompressed TOC JSON.
func (b *Blob) TOCDigest() digest.Digest {
return b.tocDigest
}
// Build builds an eStargz blob which is an extended version of stargz, from a blob (gzip, zstd
// or plain tar) passed through the argument. If there are some prioritized files are listed in
// the option, these files are grouped as "prioritized" and can be used for runtime optimization
// (e.g. prefetch). This function builds a blob in parallel, with dividing that blob into several
// (at least the number of runtime.GOMAXPROCS(0)) sub-blobs.
func Build(tarBlob *io.SectionReader, opt ...Option) (_ *Blob, rErr error) {
var opts options
opts.compressionLevel = gzip.BestCompression // BestCompression by default
for _, o := range opt {
if err := o(&opts); err != nil {
return nil, err
}
}
if opts.compression == nil {
opts.compression = newGzipCompressionWithLevel(opts.compressionLevel)
}
layerFiles := newTempFiles()
ctx := opts.ctx
if ctx == nil {
ctx = context.Background()
}
done := make(chan struct{})
defer close(done)
go func() {
select {
case <-done:
// nop
case <-ctx.Done():
layerFiles.CleanupAll()
}
}()
defer func() {
if rErr != nil {
if err := layerFiles.CleanupAll(); err != nil {
rErr = fmt.Errorf("failed to cleanup tmp files: %v: %w", err, rErr)
}
}
if cErr := ctx.Err(); cErr != nil {
rErr = fmt.Errorf("error from context %q: %w", cErr, rErr)
}
}()
tarBlob, err := decompressBlob(tarBlob, layerFiles)
if err != nil {
return nil, err
}
entries, err := sortEntries(tarBlob, opts.prioritizedFiles, opts.missedPrioritizedFiles)
if err != nil {
return nil, err
}
var tarParts [][]*entry
if opts.minChunkSize > 0 {
// Each entry needs to know the size of the current gzip stream so they
// cannot be processed in parallel.
tarParts = [][]*entry{entries}
} else {
tarParts = divideEntries(entries, runtime.GOMAXPROCS(0))
}
writers := make([]*Writer, len(tarParts))
payloads := make([]*os.File, len(tarParts))
var mu sync.Mutex
var eg errgroup.Group
for i, parts := range tarParts {
i, parts := i, parts
// builds verifiable stargz sub-blobs
eg.Go(func() error {
esgzFile, err := layerFiles.TempFile("", "esgzdata")
if err != nil {
return err
}
sw := NewWriterWithCompressor(esgzFile, opts.compression)
sw.ChunkSize = opts.chunkSize
sw.MinChunkSize = opts.minChunkSize
if sw.needsOpenGzEntries == nil {
sw.needsOpenGzEntries = make(map[string]struct{})
}
for _, f := range []string{PrefetchLandmark, NoPrefetchLandmark} {
sw.needsOpenGzEntries[f] = struct{}{}
}
if err := sw.AppendTar(readerFromEntries(parts...)); err != nil {
return err
}
mu.Lock()
writers[i] = sw
payloads[i] = esgzFile
mu.Unlock()
return nil
})
}
if err := eg.Wait(); err != nil {
rErr = err
return nil, err
}
tocAndFooter, tocDgst, err := closeWithCombine(writers...)
if err != nil {
rErr = err
return nil, err
}
var rs []io.Reader
for _, p := range payloads {
fs, err := fileSectionReader(p)
if err != nil {
return nil, err
}
rs = append(rs, fs)
}
diffID := digest.Canonical.Digester()
pr, pw := io.Pipe()
go func() {
r, err := opts.compression.Reader(io.TeeReader(io.MultiReader(append(rs, tocAndFooter)...), pw))
if err != nil {
pw.CloseWithError(err)
return
}
defer r.Close()
if _, err := io.Copy(diffID.Hash(), r); err != nil {
pw.CloseWithError(err)
return
}
pw.Close()
}()
return &Blob{
ReadCloser: readCloser{
Reader: pr,
closeFunc: layerFiles.CleanupAll,
},
tocDigest: tocDgst,
diffID: diffID,
}, nil
}
// closeWithCombine takes unclosed Writers and close them. This also returns the
// toc that combined all Writers into.
// Writers doesn't write TOC and footer to the underlying writers so they can be
// combined into a single eStargz and tocAndFooter returned by this function can
// be appended at the tail of that combined blob.
func closeWithCombine(ws ...*Writer) (tocAndFooterR io.Reader, tocDgst digest.Digest, err error) {
if len(ws) == 0 {
return nil, "", fmt.Errorf("at least one writer must be passed")
}
for _, w := range ws {
if w.closed {
return nil, "", fmt.Errorf("writer must be unclosed")
}
defer func(w *Writer) { w.closed = true }(w)
if err := w.closeGz(); err != nil {
return nil, "", err
}
if err := w.bw.Flush(); err != nil {
return nil, "", err
}
}
var (
mtoc = new(JTOC)
currentOffset int64
)
mtoc.Version = ws[0].toc.Version
for _, w := range ws {
for _, e := range w.toc.Entries {
// Recalculate Offset of non-empty files/chunks
if (e.Type == "reg" && e.Size > 0) || e.Type == "chunk" {
e.Offset += currentOffset
}
mtoc.Entries = append(mtoc.Entries, e)
}
if w.toc.Version > mtoc.Version {
mtoc.Version = w.toc.Version
}
currentOffset += w.cw.n
}
return tocAndFooter(ws[0].compressor, mtoc, currentOffset)
}
func tocAndFooter(compressor Compressor, toc *JTOC, offset int64) (io.Reader, digest.Digest, error) {
buf := new(bytes.Buffer)
tocDigest, err := compressor.WriteTOCAndFooter(buf, offset, toc, nil)
if err != nil {
return nil, "", err
}
return buf, tocDigest, nil
}
// divideEntries divides passed entries to the parts at least the number specified by the
// argument.
func divideEntries(entries []*entry, minPartsNum int) (set [][]*entry) {
var estimatedSize int64
for _, e := range entries {
estimatedSize += e.header.Size
}
unitSize := estimatedSize / int64(minPartsNum)
var (
nextEnd = unitSize
offset int64
)
set = append(set, []*entry{})
for _, e := range entries {
set[len(set)-1] = append(set[len(set)-1], e)
offset += e.header.Size
if offset > nextEnd {
set = append(set, []*entry{})
nextEnd += unitSize
}
}
return
}
var errNotFound = errors.New("not found")
// sortEntries reads the specified tar blob and returns a list of tar entries.
// If some of prioritized files are specified, the list starts from these
// files with keeping the order specified by the argument.
func sortEntries(in io.ReaderAt, prioritized []string, missedPrioritized *[]string) ([]*entry, error) {
// Import tar file.
intar, err := importTar(in)
if err != nil {
return nil, fmt.Errorf("failed to sort: %w", err)
}
// Sort the tar file respecting to the prioritized files list.
sorted := &tarFile{}
for _, l := range prioritized {
if err := moveRec(l, intar, sorted); err != nil {
if errors.Is(err, errNotFound) && missedPrioritized != nil {
*missedPrioritized = append(*missedPrioritized, l)
continue // allow not found
}
return nil, fmt.Errorf("failed to sort tar entries: %w", err)
}
}
if len(prioritized) == 0 {
sorted.add(&entry{
header: &tar.Header{
Name: NoPrefetchLandmark,
Typeflag: tar.TypeReg,
Size: int64(len([]byte{landmarkContents})),
},
payload: bytes.NewReader([]byte{landmarkContents}),
})
} else {
sorted.add(&entry{
header: &tar.Header{
Name: PrefetchLandmark,
Typeflag: tar.TypeReg,
Size: int64(len([]byte{landmarkContents})),
},
payload: bytes.NewReader([]byte{landmarkContents}),
})
}
// Dump all entry and concatinate them.
return append(sorted.dump(), intar.dump()...), nil
}
// readerFromEntries returns a reader of tar archive that contains entries passed
// through the arguments.
func readerFromEntries(entries ...*entry) io.Reader {
pr, pw := io.Pipe()
go func() {
tw := tar.NewWriter(pw)
defer tw.Close()
for _, entry := range entries {
if err := tw.WriteHeader(entry.header); err != nil {
pw.CloseWithError(fmt.Errorf("Failed to write tar header: %v", err))
return
}
if _, err := io.Copy(tw, entry.payload); err != nil {
pw.CloseWithError(fmt.Errorf("Failed to write tar payload: %v", err))
return
}
}
pw.Close()
}()
return pr
}
func importTar(in io.ReaderAt) (*tarFile, error) {
tf := &tarFile{}
pw, err := newCountReadSeeker(in)
if err != nil {
return nil, fmt.Errorf("failed to make position watcher: %w", err)
}
tr := tar.NewReader(pw)
// Walk through all nodes.
for {
// Fetch and parse next header.
h, err := tr.Next()
if err != nil {
if err == io.EOF {
break
}
return nil, fmt.Errorf("failed to parse tar file, %w", err)
}
switch cleanEntryName(h.Name) {
case PrefetchLandmark, NoPrefetchLandmark:
// Ignore existing landmark
continue
}
// Add entry. If it already exists, replace it.
if _, ok := tf.get(h.Name); ok {
tf.remove(h.Name)
}
tf.add(&entry{
header: h,
payload: io.NewSectionReader(in, pw.currentPos(), h.Size),
})
}
return tf, nil
}
func moveRec(name string, in *tarFile, out *tarFile) error {
name = cleanEntryName(name)
if name == "" { // root directory. stop recursion.
if e, ok := in.get(name); ok {
// entry of the root directory exists. we should move it as well.
// this case will occur if tar entries are prefixed with "./", "/", etc.
out.add(e)
in.remove(name)
}
return nil
}
_, okIn := in.get(name)
_, okOut := out.get(name)
if !okIn && !okOut {
return fmt.Errorf("file: %q: %w", name, errNotFound)
}
parent, _ := path.Split(strings.TrimSuffix(name, "/"))
if err := moveRec(parent, in, out); err != nil {
return err
}
if e, ok := in.get(name); ok && e.header.Typeflag == tar.TypeLink {
if err := moveRec(e.header.Linkname, in, out); err != nil {
return err
}
}
if e, ok := in.get(name); ok {
out.add(e)
in.remove(name)
}
return nil
}
type entry struct {
header *tar.Header
payload io.ReadSeeker
}
type tarFile struct {
index map[string]*entry
stream []*entry
}
func (f *tarFile) add(e *entry) {
if f.index == nil {
f.index = make(map[string]*entry)
}
f.index[cleanEntryName(e.header.Name)] = e
f.stream = append(f.stream, e)
}
func (f *tarFile) remove(name string) {
name = cleanEntryName(name)
if f.index != nil {
delete(f.index, name)
}
var filtered []*entry
for _, e := range f.stream {
if cleanEntryName(e.header.Name) == name {
continue
}
filtered = append(filtered, e)
}
f.stream = filtered
}
func (f *tarFile) get(name string) (e *entry, ok bool) {
if f.index == nil {
return nil, false
}
e, ok = f.index[cleanEntryName(name)]
return
}
func (f *tarFile) dump() []*entry {
return f.stream
}
type readCloser struct {
io.Reader
closeFunc func() error
}
func (rc readCloser) Close() error {
return rc.closeFunc()
}
func fileSectionReader(file *os.File) (*io.SectionReader, error) {
info, err := file.Stat()
if err != nil {
return nil, err
}
return io.NewSectionReader(file, 0, info.Size()), nil
}
func newTempFiles() *tempFiles {
return &tempFiles{}
}
type tempFiles struct {
files []*os.File
filesMu sync.Mutex
cleanupOnce sync.Once
}
func (tf *tempFiles) TempFile(dir, pattern string) (*os.File, error) {
f, err := os.CreateTemp(dir, pattern)
if err != nil {
return nil, err
}
tf.filesMu.Lock()
tf.files = append(tf.files, f)
tf.filesMu.Unlock()
return f, nil
}
func (tf *tempFiles) CleanupAll() (err error) {
tf.cleanupOnce.Do(func() {
err = tf.cleanupAll()
})
return
}
func (tf *tempFiles) cleanupAll() error {
tf.filesMu.Lock()
defer tf.filesMu.Unlock()
var allErr []error
for _, f := range tf.files {
if err := f.Close(); err != nil {
allErr = append(allErr, err)
}
if err := os.Remove(f.Name()); err != nil {
allErr = append(allErr, err)
}
}
tf.files = nil
return errorutil.Aggregate(allErr)
}
func newCountReadSeeker(r io.ReaderAt) (*countReadSeeker, error) {
pos := int64(0)
return &countReadSeeker{r: r, cPos: &pos}, nil
}
type countReadSeeker struct {
r io.ReaderAt
cPos *int64
mu sync.Mutex
}
func (cr *countReadSeeker) Read(p []byte) (int, error) {
cr.mu.Lock()
defer cr.mu.Unlock()
n, err := cr.r.ReadAt(p, *cr.cPos)
if err == nil {
*cr.cPos += int64(n)
}
return n, err
}
func (cr *countReadSeeker) Seek(offset int64, whence int) (int64, error) {
cr.mu.Lock()
defer cr.mu.Unlock()
switch whence {
default:
return 0, fmt.Errorf("Unknown whence: %v", whence)
case io.SeekStart:
case io.SeekCurrent:
offset += *cr.cPos
case io.SeekEnd:
return 0, fmt.Errorf("Unsupported whence: %v", whence)
}
if offset < 0 {
return 0, fmt.Errorf("invalid offset")
}
*cr.cPos = offset
return offset, nil
}
func (cr *countReadSeeker) currentPos() int64 {
cr.mu.Lock()
defer cr.mu.Unlock()
return *cr.cPos
}
func decompressBlob(org *io.SectionReader, tmp *tempFiles) (*io.SectionReader, error) {
if org.Size() < 4 {
return org, nil
}
src := make([]byte, 4)
if _, err := org.Read(src); err != nil && err != io.EOF {
return nil, err
}
var dR io.Reader
if bytes.Equal([]byte{0x1F, 0x8B, 0x08}, src[:3]) {
// gzip
dgR, err := gzip.NewReader(io.NewSectionReader(org, 0, org.Size()))
if err != nil {
return nil, err
}
defer dgR.Close()
dR = io.Reader(dgR)
} else if bytes.Equal([]byte{0x28, 0xb5, 0x2f, 0xfd}, src[:4]) {
// zstd
dzR, err := zstd.NewReader(io.NewSectionReader(org, 0, org.Size()))
if err != nil {
return nil, err
}
defer dzR.Close()
dR = io.Reader(dzR)
} else {
// uncompressed
return io.NewSectionReader(org, 0, org.Size()), nil
}
b, err := tmp.TempFile("", "uncompresseddata")
if err != nil {
return nil, err
}
if _, err := io.Copy(b, dR); err != nil {
return nil, err
}
return fileSectionReader(b)
}

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vendor/github.com/containerd/stargz-snapshotter/estargz/errorutil/errors.go generated vendored Normal file
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/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package errorutil
import (
"errors"
"fmt"
"strings"
)
// Aggregate combines a list of errors into a single new error.
func Aggregate(errs []error) error {
switch len(errs) {
case 0:
return nil
case 1:
return errs[0]
default:
points := make([]string, len(errs)+1)
points[0] = fmt.Sprintf("%d error(s) occurred:", len(errs))
for i, err := range errs {
points[i+1] = fmt.Sprintf("* %s", err)
}
return errors.New(strings.Join(points, "\n\t"))
}
}

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vendor/github.com/containerd/stargz-snapshotter/estargz/estargz.go generated vendored Normal file
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vendor/github.com/containerd/stargz-snapshotter/estargz/gzip.go generated vendored Normal file
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/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
Copyright 2019 The Go Authors. All rights reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file.
*/
package estargz
import (
"archive/tar"
"bytes"
"compress/gzip"
"encoding/binary"
"encoding/json"
"fmt"
"hash"
"io"
"strconv"
digest "github.com/opencontainers/go-digest"
)
type gzipCompression struct {
*GzipCompressor
*GzipDecompressor
}
func newGzipCompressionWithLevel(level int) Compression {
return &gzipCompression{
&GzipCompressor{level},
&GzipDecompressor{},
}
}
func NewGzipCompressor() *GzipCompressor {
return &GzipCompressor{gzip.BestCompression}
}
func NewGzipCompressorWithLevel(level int) *GzipCompressor {
return &GzipCompressor{level}
}
type GzipCompressor struct {
compressionLevel int
}
func (gc *GzipCompressor) Writer(w io.Writer) (WriteFlushCloser, error) {
return gzip.NewWriterLevel(w, gc.compressionLevel)
}
func (gc *GzipCompressor) WriteTOCAndFooter(w io.Writer, off int64, toc *JTOC, diffHash hash.Hash) (digest.Digest, error) {
tocJSON, err := json.MarshalIndent(toc, "", "\t")
if err != nil {
return "", err
}
gz, _ := gzip.NewWriterLevel(w, gc.compressionLevel)
gw := io.Writer(gz)
if diffHash != nil {
gw = io.MultiWriter(gz, diffHash)
}
tw := tar.NewWriter(gw)
if err := tw.WriteHeader(&tar.Header{
Typeflag: tar.TypeReg,
Name: TOCTarName,
Size: int64(len(tocJSON)),
}); err != nil {
return "", err
}
if _, err := tw.Write(tocJSON); err != nil {
return "", err
}
if err := tw.Close(); err != nil {
return "", err
}
if err := gz.Close(); err != nil {
return "", err
}
if _, err := w.Write(gzipFooterBytes(off)); err != nil {
return "", err
}
return digest.FromBytes(tocJSON), nil
}
// gzipFooterBytes returns the 51 bytes footer.
func gzipFooterBytes(tocOff int64) []byte {
buf := bytes.NewBuffer(make([]byte, 0, FooterSize))
gz, _ := gzip.NewWriterLevel(buf, gzip.NoCompression) // MUST be NoCompression to keep 51 bytes
// Extra header indicating the offset of TOCJSON
// https://tools.ietf.org/html/rfc1952#section-2.3.1.1
header := make([]byte, 4)
header[0], header[1] = 'S', 'G'
subfield := fmt.Sprintf("%016xSTARGZ", tocOff)
binary.LittleEndian.PutUint16(header[2:4], uint16(len(subfield))) // little-endian per RFC1952
gz.Header.Extra = append(header, []byte(subfield)...)
gz.Close()
if buf.Len() != FooterSize {
panic(fmt.Sprintf("footer buffer = %d, not %d", buf.Len(), FooterSize))
}
return buf.Bytes()
}
type GzipDecompressor struct{}
func (gz *GzipDecompressor) Reader(r io.Reader) (io.ReadCloser, error) {
return gzip.NewReader(r)
}
func (gz *GzipDecompressor) ParseTOC(r io.Reader) (toc *JTOC, tocDgst digest.Digest, err error) {
return parseTOCEStargz(r)
}
func (gz *GzipDecompressor) ParseFooter(p []byte) (blobPayloadSize, tocOffset, tocSize int64, err error) {
if len(p) != FooterSize {
return 0, 0, 0, fmt.Errorf("invalid length %d cannot be parsed", len(p))
}
zr, err := gzip.NewReader(bytes.NewReader(p))
if err != nil {
return 0, 0, 0, err
}
defer zr.Close()
extra := zr.Header.Extra
si1, si2, subfieldlen, subfield := extra[0], extra[1], extra[2:4], extra[4:]
if si1 != 'S' || si2 != 'G' {
return 0, 0, 0, fmt.Errorf("invalid subfield IDs: %q, %q; want E, S", si1, si2)
}
if slen := binary.LittleEndian.Uint16(subfieldlen); slen != uint16(16+len("STARGZ")) {
return 0, 0, 0, fmt.Errorf("invalid length of subfield %d; want %d", slen, 16+len("STARGZ"))
}
if string(subfield[16:]) != "STARGZ" {
return 0, 0, 0, fmt.Errorf("STARGZ magic string must be included in the footer subfield")
}
tocOffset, err = strconv.ParseInt(string(subfield[:16]), 16, 64)
if err != nil {
return 0, 0, 0, fmt.Errorf("legacy: failed to parse toc offset: %w", err)
}
return tocOffset, tocOffset, 0, nil
}
func (gz *GzipDecompressor) FooterSize() int64 {
return FooterSize
}
func (gz *GzipDecompressor) DecompressTOC(r io.Reader) (tocJSON io.ReadCloser, err error) {
return decompressTOCEStargz(r)
}
type LegacyGzipDecompressor struct{}
func (gz *LegacyGzipDecompressor) Reader(r io.Reader) (io.ReadCloser, error) {
return gzip.NewReader(r)
}
func (gz *LegacyGzipDecompressor) ParseTOC(r io.Reader) (toc *JTOC, tocDgst digest.Digest, err error) {
return parseTOCEStargz(r)
}
func (gz *LegacyGzipDecompressor) ParseFooter(p []byte) (blobPayloadSize, tocOffset, tocSize int64, err error) {
if len(p) != legacyFooterSize {
return 0, 0, 0, fmt.Errorf("legacy: invalid length %d cannot be parsed", len(p))
}
zr, err := gzip.NewReader(bytes.NewReader(p))
if err != nil {
return 0, 0, 0, fmt.Errorf("legacy: failed to get footer gzip reader: %w", err)
}
defer zr.Close()
extra := zr.Header.Extra
if len(extra) != 16+len("STARGZ") {
return 0, 0, 0, fmt.Errorf("legacy: invalid stargz's extra field size")
}
if string(extra[16:]) != "STARGZ" {
return 0, 0, 0, fmt.Errorf("legacy: magic string STARGZ not found")
}
tocOffset, err = strconv.ParseInt(string(extra[:16]), 16, 64)
if err != nil {
return 0, 0, 0, fmt.Errorf("legacy: failed to parse toc offset: %w", err)
}
return tocOffset, tocOffset, 0, nil
}
func (gz *LegacyGzipDecompressor) FooterSize() int64 {
return legacyFooterSize
}
func (gz *LegacyGzipDecompressor) DecompressTOC(r io.Reader) (tocJSON io.ReadCloser, err error) {
return decompressTOCEStargz(r)
}
func parseTOCEStargz(r io.Reader) (toc *JTOC, tocDgst digest.Digest, err error) {
tr, err := decompressTOCEStargz(r)
if err != nil {
return nil, "", err
}
dgstr := digest.Canonical.Digester()
toc = new(JTOC)
if err := json.NewDecoder(io.TeeReader(tr, dgstr.Hash())).Decode(&toc); err != nil {
return nil, "", fmt.Errorf("error decoding TOC JSON: %v", err)
}
if err := tr.Close(); err != nil {
return nil, "", err
}
return toc, dgstr.Digest(), nil
}
func decompressTOCEStargz(r io.Reader) (tocJSON io.ReadCloser, err error) {
zr, err := gzip.NewReader(r)
if err != nil {
return nil, fmt.Errorf("malformed TOC gzip header: %v", err)
}
zr.Multistream(false)
tr := tar.NewReader(zr)
h, err := tr.Next()
if err != nil {
return nil, fmt.Errorf("failed to find tar header in TOC gzip stream: %v", err)
}
if h.Name != TOCTarName {
return nil, fmt.Errorf("TOC tar entry had name %q; expected %q", h.Name, TOCTarName)
}
return readCloser{tr, zr.Close}, nil
}

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/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
Copyright 2019 The Go Authors. All rights reserved.
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file.
*/
package estargz
import (
"archive/tar"
"hash"
"io"
"os"
"path"
"time"
digest "github.com/opencontainers/go-digest"
)
const (
// TOCTarName is the name of the JSON file in the tar archive in the
// table of contents gzip stream.
TOCTarName = "stargz.index.json"
// FooterSize is the number of bytes in the footer
//
// The footer is an empty gzip stream with no compression and an Extra
// header of the form "%016xSTARGZ", where the 64 bit hex-encoded
// number is the offset to the gzip stream of JSON TOC.
//
// 51 comes from:
//
// 10 bytes gzip header
// 2 bytes XLEN (length of Extra field) = 26 (4 bytes header + 16 hex digits + len("STARGZ"))
// 2 bytes Extra: SI1 = 'S', SI2 = 'G'
// 2 bytes Extra: LEN = 22 (16 hex digits + len("STARGZ"))
// 22 bytes Extra: subfield = fmt.Sprintf("%016xSTARGZ", offsetOfTOC)
// 5 bytes flate header
// 8 bytes gzip footer
// (End of the eStargz blob)
//
// NOTE: For Extra fields, subfield IDs SI1='S' SI2='G' is used for eStargz.
FooterSize = 51
// legacyFooterSize is the number of bytes in the legacy stargz footer.
//
// 47 comes from:
//
// 10 byte gzip header +
// 2 byte (LE16) length of extra, encoding 22 (16 hex digits + len("STARGZ")) == "\x16\x00" +
// 22 bytes of extra (fmt.Sprintf("%016xSTARGZ", tocGzipOffset))
// 5 byte flate header
// 8 byte gzip footer (two little endian uint32s: digest, size)
legacyFooterSize = 47
// TOCJSONDigestAnnotation is an annotation for an image layer. This stores the
// digest of the TOC JSON.
// This annotation is valid only when it is specified in `.[]layers.annotations`
// of an image manifest.
TOCJSONDigestAnnotation = "containerd.io/snapshot/stargz/toc.digest"
// StoreUncompressedSizeAnnotation is an additional annotation key for eStargz to enable lazy
// pulling on containers/storage. Stargz Store is required to expose the layer's uncompressed size
// to the runtime but current OCI image doesn't ship this information by default. So we store this
// to the special annotation.
StoreUncompressedSizeAnnotation = "io.containers.estargz.uncompressed-size"
// PrefetchLandmark is a file entry which indicates the end position of
// prefetch in the stargz file.
PrefetchLandmark = ".prefetch.landmark"
// NoPrefetchLandmark is a file entry which indicates that no prefetch should
// occur in the stargz file.
NoPrefetchLandmark = ".no.prefetch.landmark"
landmarkContents = 0xf
)
// JTOC is the JSON-serialized table of contents index of the files in the stargz file.
type JTOC struct {
Version int `json:"version"`
Entries []*TOCEntry `json:"entries"`
}
// TOCEntry is an entry in the stargz file's TOC (Table of Contents).
type TOCEntry struct {
// Name is the tar entry's name. It is the complete path
// stored in the tar file, not just the base name.
Name string `json:"name"`
// Type is one of "dir", "reg", "symlink", "hardlink", "char",
// "block", "fifo", or "chunk".
// The "chunk" type is used for regular file data chunks past the first
// TOCEntry; the 2nd chunk and on have only Type ("chunk"), Offset,
// ChunkOffset, and ChunkSize populated.
Type string `json:"type"`
// Size, for regular files, is the logical size of the file.
Size int64 `json:"size,omitempty"`
// ModTime3339 is the modification time of the tar entry. Empty
// means zero or unknown. Otherwise it's in UTC RFC3339
// format. Use the ModTime method to access the time.Time value.
ModTime3339 string `json:"modtime,omitempty"`
modTime time.Time
// LinkName, for symlinks and hardlinks, is the link target.
LinkName string `json:"linkName,omitempty"`
// Mode is the permission and mode bits.
Mode int64 `json:"mode,omitempty"`
// UID is the user ID of the owner.
UID int `json:"uid,omitempty"`
// GID is the group ID of the owner.
GID int `json:"gid,omitempty"`
// Uname is the username of the owner.
//
// In the serialized JSON, this field may only be present for
// the first entry with the same UID.
Uname string `json:"userName,omitempty"`
// Gname is the group name of the owner.
//
// In the serialized JSON, this field may only be present for
// the first entry with the same GID.
Gname string `json:"groupName,omitempty"`
// Offset, for regular files, provides the offset in the
// stargz file to the file's data bytes. See ChunkOffset and
// ChunkSize.
Offset int64 `json:"offset,omitempty"`
// InnerOffset is an optional field indicates uncompressed offset
// of this "reg" or "chunk" payload in a stream starts from Offset.
// This field enables to put multiple "reg" or "chunk" payloads
// in one chunk with having the same Offset but different InnerOffset.
InnerOffset int64 `json:"innerOffset,omitempty"`
nextOffset int64 // the Offset of the next entry with a non-zero Offset
// DevMajor is the major device number for "char" and "block" types.
DevMajor int `json:"devMajor,omitempty"`
// DevMinor is the major device number for "char" and "block" types.
DevMinor int `json:"devMinor,omitempty"`
// NumLink is the number of entry names pointing to this entry.
// Zero means one name references this entry.
// This field is calculated during runtime and not recorded in TOC JSON.
NumLink int `json:"-"`
// Xattrs are the extended attribute for the entry.
Xattrs map[string][]byte `json:"xattrs,omitempty"`
// Digest stores the OCI checksum for regular files payload.
// It has the form "sha256:abcdef01234....".
Digest string `json:"digest,omitempty"`
// ChunkOffset is non-zero if this is a chunk of a large,
// regular file. If so, the Offset is where the gzip header of
// ChunkSize bytes at ChunkOffset in Name begin.
//
// In serialized form, a "chunkSize" JSON field of zero means
// that the chunk goes to the end of the file. After reading
// from the stargz TOC, though, the ChunkSize is initialized
// to a non-zero file for when Type is either "reg" or
// "chunk".
ChunkOffset int64 `json:"chunkOffset,omitempty"`
ChunkSize int64 `json:"chunkSize,omitempty"`
// ChunkDigest stores an OCI digest of the chunk. This must be formed
// as "sha256:0123abcd...".
ChunkDigest string `json:"chunkDigest,omitempty"`
children map[string]*TOCEntry
// chunkTopIndex is index of the entry where Offset starts in the blob.
chunkTopIndex int
}
// ModTime returns the entry's modification time.
func (e *TOCEntry) ModTime() time.Time { return e.modTime }
// NextOffset returns the position (relative to the start of the
// stargz file) of the next gzip boundary after e.Offset.
func (e *TOCEntry) NextOffset() int64 { return e.nextOffset }
func (e *TOCEntry) addChild(baseName string, child *TOCEntry) {
if e.children == nil {
e.children = make(map[string]*TOCEntry)
}
if child.Type == "dir" {
e.NumLink++ // Entry ".." in the subdirectory links to this directory
}
e.children[baseName] = child
}
// isDataType reports whether TOCEntry is a regular file or chunk (something that
// contains regular file data).
func (e *TOCEntry) isDataType() bool { return e.Type == "reg" || e.Type == "chunk" }
// Stat returns a FileInfo value representing e.
func (e *TOCEntry) Stat() os.FileInfo { return fileInfo{e} }
// ForeachChild calls f for each child item. If f returns false, iteration ends.
// If e is not a directory, f is not called.
func (e *TOCEntry) ForeachChild(f func(baseName string, ent *TOCEntry) bool) {
for name, ent := range e.children {
if !f(name, ent) {
return
}
}
}
// LookupChild returns the directory e's child by its base name.
func (e *TOCEntry) LookupChild(baseName string) (child *TOCEntry, ok bool) {
child, ok = e.children[baseName]
return
}
// fileInfo implements os.FileInfo using the wrapped *TOCEntry.
type fileInfo struct{ e *TOCEntry }
var _ os.FileInfo = fileInfo{}
func (fi fileInfo) Name() string { return path.Base(fi.e.Name) }
func (fi fileInfo) IsDir() bool { return fi.e.Type == "dir" }
func (fi fileInfo) Size() int64 { return fi.e.Size }
func (fi fileInfo) ModTime() time.Time { return fi.e.ModTime() }
func (fi fileInfo) Sys() interface{} { return fi.e }
func (fi fileInfo) Mode() (m os.FileMode) {
// TOCEntry.Mode is tar.Header.Mode so we can understand the these bits using `tar` pkg.
m = (&tar.Header{Mode: fi.e.Mode}).FileInfo().Mode() &
(os.ModePerm | os.ModeSetuid | os.ModeSetgid | os.ModeSticky)
switch fi.e.Type {
case "dir":
m |= os.ModeDir
case "symlink":
m |= os.ModeSymlink
case "char":
m |= os.ModeDevice | os.ModeCharDevice
case "block":
m |= os.ModeDevice
case "fifo":
m |= os.ModeNamedPipe
}
return m
}
// TOCEntryVerifier holds verifiers that are usable for verifying chunks contained
// in a eStargz blob.
type TOCEntryVerifier interface {
// Verifier provides a content verifier that can be used for verifying the
// contents of the specified TOCEntry.
Verifier(ce *TOCEntry) (digest.Verifier, error)
}
// Compression provides the compression helper to be used creating and parsing eStargz.
// This package provides gzip-based Compression by default, but any compression
// algorithm (e.g. zstd) can be used as long as it implements Compression.
type Compression interface {
Compressor
Decompressor
}
// Compressor represents the helper mothods to be used for creating eStargz.
type Compressor interface {
// Writer returns WriteCloser to be used for writing a chunk to eStargz.
// Everytime a chunk is written, the WriteCloser is closed and Writer is
// called again for writing the next chunk.
//
// The returned writer should implement "Flush() error" function that flushes
// any pending compressed data to the underlying writer.
Writer(w io.Writer) (WriteFlushCloser, error)
// WriteTOCAndFooter is called to write JTOC to the passed Writer.
// diffHash calculates the DiffID (uncompressed sha256 hash) of the blob
// WriteTOCAndFooter can optionally write anything that affects DiffID calculation
// (e.g. uncompressed TOC JSON).
//
// This function returns tocDgst that represents the digest of TOC that will be used
// to verify this blob when it's parsed.
WriteTOCAndFooter(w io.Writer, off int64, toc *JTOC, diffHash hash.Hash) (tocDgst digest.Digest, err error)
}
// Decompressor represents the helper mothods to be used for parsing eStargz.
type Decompressor interface {
// Reader returns ReadCloser to be used for decompressing file payload.
Reader(r io.Reader) (io.ReadCloser, error)
// FooterSize returns the size of the footer of this blob.
FooterSize() int64
// ParseFooter parses the footer and returns the offset and (compressed) size of TOC.
// payloadBlobSize is the (compressed) size of the blob payload (i.e. the size between
// the top until the TOC JSON).
//
// If tocOffset < 0, we assume that TOC isn't contained in the blob and pass nil reader
// to ParseTOC. We expect that ParseTOC acquire TOC from the external location and return it.
//
// tocSize is optional. If tocSize <= 0, it's by default the size of the range from tocOffset until the beginning of the
// footer (blob size - tocOff - FooterSize).
// If blobPayloadSize < 0, blobPayloadSize become the blob size.
ParseFooter(p []byte) (blobPayloadSize, tocOffset, tocSize int64, err error)
// ParseTOC parses TOC from the passed reader. The reader provides the partial contents
// of the underlying blob that has the range specified by ParseFooter method.
//
// This function returns tocDgst that represents the digest of TOC that will be used
// to verify this blob. This must match to the value returned from
// Compressor.WriteTOCAndFooter that is used when creating this blob.
//
// If tocOffset returned by ParseFooter is < 0, we assume that TOC isn't contained in the blob.
// Pass nil reader to ParseTOC then we expect that ParseTOC acquire TOC from the external location
// and return it.
ParseTOC(r io.Reader) (toc *JTOC, tocDgst digest.Digest, err error)
}
type WriteFlushCloser interface {
io.WriteCloser
Flush() error
}