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new "image" mount type

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Add a new "image" mount type to `--mount`.  The source of the mount is
the name or ID of an image.  The destination is the path inside the
container.  Image mounts further support an optional `rw,readwrite`
parameter which if set to "true" will yield the mount writable inside
the container.  Note that no changes are propagated to the image mount
on the host (which in any case is read only).

Mounts are overlay mounts.  To support read-only overlay mounts, vendor
a non-release version of Buildah.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
This commit is contained in:
Valentin Rothberg
2020-10-26 11:35:02 +01:00
parent cce6c6cd40
commit 65a618886e
168 changed files with 6143 additions and 10606 deletions
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12
vendor/github.com/containers/buildah/pkg/parse/parse.go generated vendored
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@ -335,7 +335,7 @@ func GetBindMount(args []string) (specs.Mount, error) {
setDest := false
for _, val := range args {
kv := strings.Split(val, "=")
kv := strings.SplitN(val, "=", 2)
switch kv[0] {
case "bind-nonrecursive":
newMount.Options = append(newMount.Options, "bind")
@ -407,7 +407,7 @@ func GetTmpfsMount(args []string) (specs.Mount, error) {
setDest := false
for _, val := range args {
kv := strings.Split(val, "=")
kv := strings.SplitN(val, "=", 2)
switch kv[0] {
case "ro", "nosuid", "nodev", "noexec":
newMount.Options = append(newMount.Options, kv[0])
@ -789,9 +789,7 @@ func IDMappingOptions(c *cobra.Command, isolation buildah.Isolation) (usernsOpti
case "host":
usernsOption.Host = true
default:
if strings.HasPrefix(how, "ns:") {
how = how[3:]
}
how = strings.TrimPrefix(how, "ns:")
if _, err := os.Stat(how); err != nil {
return nil, nil, errors.Wrapf(err, "error checking for %s namespace at %q", string(specs.UserNamespace), how)
}
@ -890,9 +888,7 @@ func NamespaceOptions(c *cobra.Command) (namespaceOptions buildah.NamespaceOptio
break
}
}
if strings.HasPrefix(how, "ns:") {
how = how[3:]
}
how = strings.TrimPrefix(how, "ns:")
if _, err := os.Stat(how); err != nil {
return nil, buildah.NetworkDefault, errors.Wrapf(err, "error checking for %s namespace at %q", what, how)
}