DocumentProvider does not allow createDocument() #1350
Description
Problem description
When using the Termux DocumentProvider from another app, you can not save files into the termux user directory or its children.
Steps to reproduce
- Start a write request to the Termux' DocumentProvider
- An error message appears and logcat writes:
E/DatabaseUtils: Writing exception to parcel
java.lang.UnsupportedOperationException: Create not supported
at android.provider.DocumentsProvider.createDocument(DocumentsProvider.java:227)
at android.provider.DocumentsProvider.callUnchecked(DocumentsProvider.java:757)
at android.provider.DocumentsProvider.call(DocumentsProvider.java:716)
at android.content.ContentProvider$Transport.call(ContentProvider.java:492)
at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:283)
at android.os.Binder.execTransact(Binder.java:565)
W/DocumentsActivity: Failed to create document
java.lang.UnsupportedOperationException: Create not supported
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:167)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
at android.content.ContentProviderProxy.call(ContentProviderNative.java:646)
at android.content.ContentProviderClient.call(ContentProviderClient.java:456)
at android.provider.DocumentsContract.createDocument(DocumentsContract.java:1083)
at com.android.documentsui.DocumentsActivity$CreateFinishTask.run(DocumentsActivity.java:573)
at com.android.documentsui.DocumentsActivity$CreateFinishTask.run(DocumentsActivity.java:564)
at com.android.documentsui.PairedTask.doInBackground(PairedTask.java:67)
at android.os.AsyncTask$2.call(AsyncTask.java:304)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at com.android.documentsui.ProviderExecutor.run(ProviderExecutor.java:104)
Cause:
Flag indicates create support:
2.:
but no create is implemented.
Expected behavior
Termux allows me to write to the user directory if the user has granted permissions to do so by selecting the Termux' DocumentProvider in DocumentsUI.
Additional information
What am I trying to achieve?
I'm currently trying to introduce support for shared config files into RcloneExplorer so that users can use Termux for the full shell experience and rcloneExplorer for the day to day browsing.
EDIT
Is there interest in implementing createDocument()? If so, I could probably submit a pull request. openDocument() is not restricted to reads anyway, so either this a implementation or security error since you could do a openDocumentStream() on the underlying file anyways.