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authorMatthew Heon <mheon@redhat.com>2020-12-02 10:05:34 -0500
committerMatthew Heon <mheon@redhat.com>2020-12-02 14:18:37 -0500
commitab886328357184cd0a8375a5dedf816ba91789f9 (patch)
tree3d1d5f58931ab6c6c1f0a5a74b3e263e616d64ee /pkg/util
parentce45b71dcfe7e5e0fd7ab43b9eeb4834317e6443 (diff)
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Use Libpod tmpdir for pause path
Previously, we always computed pause path from the Rootless runtime directory. Problem: this does not match the behavior of Libpod when the directory changes. Libpod will continue to use the previous directory, cached in the database; Pause pidfiles will swap to the new path. This is problematic when the directory needs to exist to write the pidfile, and Libpod is what creates the directory. There are two potential solutions - allow the pause pidfile to move and just make the directory when we want to write it, or use the cached Libpod paths for a guaranteed location. This patch does the second, because it seems safer - we will never miss a previously-existing pidfile because the location is now consistent. Fixes #8539 Signed-off-by: Matthew Heon <mheon@redhat.com>
Diffstat (limited to 'pkg/util')
-rw-r--r--pkg/util/utils_supported.go13
-rw-r--r--pkg/util/utils_windows.go6
2 files changed, 18 insertions, 1 deletions
diff --git a/pkg/util/utils_supported.go b/pkg/util/utils_supported.go
index 2d636a7cb..a63c76415 100644
--- a/pkg/util/utils_supported.go
+++ b/pkg/util/utils_supported.go
@@ -99,7 +99,8 @@ func GetRootlessConfigHomeDir() (string, error) {
}
// GetRootlessPauseProcessPidPath returns the path to the file that holds the pid for
-// the pause process
+// the pause process.
+// DEPRECATED - switch to GetRootlessPauseProcessPidPathGivenDir
func GetRootlessPauseProcessPidPath() (string, error) {
runtimeDir, err := GetRuntimeDir()
if err != nil {
@@ -107,3 +108,13 @@ func GetRootlessPauseProcessPidPath() (string, error) {
}
return filepath.Join(runtimeDir, "libpod", "pause.pid"), nil
}
+
+// GetRootlessPauseProcessPidPathGivenDir returns the path to the file that
+// holds the PID of the pause process, given the location of Libpod's temporary
+// files.
+func GetRootlessPauseProcessPidPathGivenDir(libpodTmpDir string) (string, error) {
+ if libpodTmpDir == "" {
+ return "", errors.Errorf("must provide non-empty tmporary directory")
+ }
+ return filepath.Join(libpodTmpDir, "pause.pid"), nil
+}
diff --git a/pkg/util/utils_windows.go b/pkg/util/utils_windows.go
index 9bba2d1ee..46ca5e7f1 100644
--- a/pkg/util/utils_windows.go
+++ b/pkg/util/utils_windows.go
@@ -25,6 +25,12 @@ func GetRootlessPauseProcessPidPath() (string, error) {
return "", errors.Wrap(errNotImplemented, "GetRootlessPauseProcessPidPath")
}
+// GetRootlessPauseProcessPidPath returns the path to the file that holds the pid for
+// the pause process
+func GetRootlessPauseProcessPidPathGivenDir(unused string) (string, error) {
+ return "", errors.Wrap(errNotImplemented, "GetRootlessPauseProcessPidPath")
+}
+
// GetRuntimeDir returns the runtime directory
func GetRuntimeDir() (string, error) {
return "", errors.New("this function is not implemented for windows")