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-rw-r--r--pkg/spec/storage.go73
-rw-r--r--pkg/spec/storage_test.go2
2 files changed, 47 insertions, 28 deletions
diff --git a/pkg/spec/storage.go b/pkg/spec/storage.go
index 6f8398513..9660c278f 100644
--- a/pkg/spec/storage.go
+++ b/pkg/spec/storage.go
@@ -79,6 +79,7 @@ func (config *CreateConfig) parseVolumes(runtime *libpod.Runtime) ([]spec.Mount,
}
// Unify mounts from --mount, --volume, --tmpfs.
+ // Also add mounts + volumes directly from createconfig.
// Start with --volume.
for dest, mount := range volumeMounts {
if _, ok := unifiedMounts[dest]; ok {
@@ -99,8 +100,21 @@ func (config *CreateConfig) parseVolumes(runtime *libpod.Runtime) ([]spec.Mount,
}
unifiedMounts[dest] = tmpfs
}
-
- // TODO: Check for conflicts between volumes and named volumes.
+ // Now spec mounts and volumes
+ for _, mount := range config.Mounts {
+ dest := mount.Destination
+ if _, ok := unifiedMounts[dest]; ok {
+ return nil, nil, errors.Wrapf(errDuplicateDest, dest)
+ }
+ unifiedMounts[dest] = mount
+ }
+ for _, volume := range config.NamedVolumes {
+ dest := volume.Dest
+ if _, ok := unifiedVolumes[dest]; ok {
+ return nil, nil, errors.Wrapf(errDuplicateDest, dest)
+ }
+ unifiedVolumes[dest] = volume
+ }
// If requested, add container init binary
if config.Init {
@@ -131,9 +145,17 @@ func (config *CreateConfig) parseVolumes(runtime *libpod.Runtime) ([]spec.Mount,
baseVolumes[dest] = volume
}
- // TODO: Allow an explicit list of named volumes and spec mounts in the
- // createconfig. Podman doesn't need them, but other libpod consumers
- // might want them.
+ // Check for conflicts between named volumes and mounts
+ for dest := range unifiedMounts {
+ if _, ok := unifiedVolumes[dest]; ok {
+ return nil, nil, errors.Wrapf(errDuplicateDest, "conflict at mount destination %v", dest)
+ }
+ }
+ for dest := range unifiedVolumes {
+ if _, ok := unifiedMounts[dest]; ok {
+ return nil, nil, errors.Wrapf(errDuplicateDest, "conflict at mount destination %v", dest)
+ }
+ }
// Final step: maps to arrays
finalMounts := make([]spec.Mount, 0, len(baseMounts))
@@ -164,19 +186,11 @@ func (config *CreateConfig) getVolumesFrom(runtime *libpod.Runtime) (map[string]
// Both of these are maps of mount destination to mount type.
// We ensure that each destination is only mounted to once in this way.
- // We tiebreak only within each category; we'll let libpod tiebreak
- // between mounts and named volumes.
- // TODO: Should we unmount subtree mounts? E.g., if /tmp/ is mounted by
- // one mount, and we already have /tmp/a and /tmp/b, should we remove
- // the /tmp/a and /tmp/b mounts in favor of the more general /tmp?
finalMounts := make(map[string]spec.Mount)
finalNamedVolumes := make(map[string]*libpod.ContainerNamedVolume)
for _, vol := range config.VolumesFrom {
options := []string{}
- // TODO: now that container names may contain colons this is no
- // longer safe.
- // I don't know if there's much we can do here...
splitVol := strings.SplitN(vol, ":", 2)
if len(splitVol) == 2 {
if strings.Contains(splitVol[1], "Z") ||
@@ -185,10 +199,10 @@ func (config *CreateConfig) getVolumesFrom(runtime *libpod.Runtime) (map[string]
strings.Contains(splitVol[1], "shared") {
return nil, nil, errors.Errorf("invalid options %q, can only specify 'ro', 'rw', and 'z", splitVol[1])
}
- if err := ValidateVolumeOpts(splitVol[1]); err != nil {
+ options = strings.Split(splitVol[1], ",")
+ if err := ValidateVolumeOpts(options); err != nil {
return nil, nil, err
}
- options = strings.Split(splitVol[1], ",")
}
ctr, err := runtime.LookupContainer(splitVol[0])
if err != nil {
@@ -339,14 +353,12 @@ func getBindMount(args []string) (spec.Mount, error) {
kv := strings.Split(val, "=")
switch kv[0] {
case "ro", "nosuid", "nodev", "noexec":
- // TODO: detect duplication of these options
+ // TODO: detect duplication of these options.
+ // (Is this necessary?)
newMount.Options = append(newMount.Options, kv[0])
case "shared", "rshared", "private", "rprivate", "slave", "rslave", "Z", "z":
- // TODO: detect duplicate mount propagation options
newMount.Options = append(newMount.Options, kv[0])
case "bind-propagation":
- // TODO: this should conflict with the mount propagation
- // options above.
if len(kv) == 1 {
return newMount, errors.Wrapf(optionArgError, kv[0])
}
@@ -382,6 +394,10 @@ func getBindMount(args []string) (spec.Mount, error) {
newMount.Source = newMount.Destination
}
+ if err := ValidateVolumeOpts(newMount.Options); err != nil {
+ return newMount, err
+ }
+
return newMount, nil
}
@@ -509,28 +525,27 @@ func ValidateVolumeCtrDir(ctrDir string) error {
}
// ValidateVolumeOpts validates a volume's options
-func ValidateVolumeOpts(option string) error {
+func ValidateVolumeOpts(options []string) error {
var foundRootPropagation, foundRWRO, foundLabelChange int
- options := strings.Split(option, ",")
for _, opt := range options {
switch opt {
case "rw", "ro":
foundRWRO++
if foundRWRO > 1 {
- return errors.Errorf("invalid options %q, can only specify 1 'rw' or 'ro' option", option)
+ return errors.Errorf("invalid options %q, can only specify 1 'rw' or 'ro' option", strings.Join(options, ", "))
}
case "z", "Z":
foundLabelChange++
if foundLabelChange > 1 {
- return errors.Errorf("invalid options %q, can only specify 1 'z' or 'Z' option", option)
+ return errors.Errorf("invalid options %q, can only specify 1 'z' or 'Z' option", strings.Join(options, ", "))
}
case "private", "rprivate", "shared", "rshared", "slave", "rslave":
foundRootPropagation++
if foundRootPropagation > 1 {
- return errors.Errorf("invalid options %q, can only specify 1 '[r]shared', '[r]private' or '[r]slave' option", option)
+ return errors.Errorf("invalid options %q, can only specify 1 '[r]shared', '[r]private' or '[r]slave' option", strings.Join(options, ", "))
}
default:
- return errors.Errorf("invalid option type %q", option)
+ return errors.Errorf("invalid option type %q", opt)
}
}
return nil
@@ -562,10 +577,10 @@ func (config *CreateConfig) getVolumeMounts() (map[string]spec.Mount, map[string
dest = splitVol[1]
}
if len(splitVol) > 2 {
- if err := ValidateVolumeOpts(splitVol[2]); err != nil {
+ options = strings.Split(splitVol[2], ",")
+ if err := ValidateVolumeOpts(options); err != nil {
return nil, nil, err
}
- options = strings.Split(splitVol[2], ",")
}
if err := ValidateVolumeHostDir(src); err != nil {
@@ -724,6 +739,10 @@ func processOptions(options []string) []string {
return options
}
+// Supercede existing mounts in the spec with new, user-specified mounts.
+// TODO: Should we unmount subtree mounts? E.g., if /tmp/ is mounted by
+// one mount, and we already have /tmp/a and /tmp/b, should we remove
+// the /tmp/a and /tmp/b mounts in favor of the more general /tmp?
func supercedeUserMounts(mounts []spec.Mount, configMount []spec.Mount) []spec.Mount {
if len(mounts) > 0 {
// If we have overlappings mounts, remove them from the spec in favor of
diff --git a/pkg/spec/storage_test.go b/pkg/spec/storage_test.go
index 4d96a2de6..2439efb6f 100644
--- a/pkg/spec/storage_test.go
+++ b/pkg/spec/storage_test.go
@@ -13,7 +13,7 @@ func TestGetVolumeMountsOneVolume(t *testing.T) {
Destination: "/foobar",
Type: "bind",
Source: "/tmp",
- Options: []string{"ro", "rbind", "rprivate"},
+ Options: []string{"ro"},
}
config := CreateConfig{
Volumes: []string{"/tmp:/foobar:ro"},
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-20 17:03:59 +0000