Can't read sysfs file with remote fs manager: EACCES

[nitanmarcel]

I can't seem to read /config/usb_gadget/g1/UDC with the remote filesystem manager due to permission errors.

    private fun readSysfs(path: String): String {
        val file = MainActivity.filesystemManager.getFile(path)
        return BufferedReader(InputStreamReader(file.inputStream())).use { it.readText() }
    }

I also tried with "file.newInputStream()" which gives me an empty string.
Everything works fine if I use the root shell and cat.

libsuerror.txt

[androidacy-user]

I can't seem to read /config/usb_gadget/g1/UDC with the remote filesystem manager due to permission errors.

private fun readSysfs(path: String): String {
    val file = MainActivity.filesystemManager.getFile(path)
    return BufferedReader(InputStreamReader(file.inputStream())).use { it.readText() }
}

I also tried with "file.newInputStream()" which gives me an empty string. Everything works fine if I use the root shell and cat.

libsuerror.txt

.inputStream() is a Java/kotlin extension, it's not going through sufile at all. And libsu doesn't read files in a way compatible with sysfs. Sysfs has limitations on how it can be read and written to.

[nitanmarcel]

I can't seem to read /config/usb_gadget/g1/UDC with the remote filesystem manager due to permission errors.

private fun readSysfs(path: String): String {
    val file = MainActivity.filesystemManager.getFile(path)
    return BufferedReader(InputStreamReader(file.inputStream())).use { it.readText() }
}

I also tried with "file.newInputStream()" which gives me an empty string. Everything works fine if I use the root shell and cat.
libsuerror.txt

.inputStream() is a Java/kotlin extension, it's not going through sufile at all. And libsu doesn't read files in a way compatible with sysfs. Sysfs has limitations on how it can be read and written to.

Thanks. Well I've moved to SuFile and it works perfectly. Moderators can close this issue if this is not a bug with libsu's filesystemmamanger