is there any limitations in using "/proc/mounts" in android

Question

I'm having a problem with devices that has an external storage (SD card) and internal data storage. Like in Samsung S3 device there are two kind of external storages the SD-card and the internal data storage. The Environment.getExternalStorageDirectory() API do not get both, I have searched the internet and fount that I can read the /proc/mountslike the question

How to get all the mount point information for android device?

My question is can I rely on the /proc/mounts filesystem on all devices and operating systems or there are any limitations? And is there any good documentation about this filesystem?

Thanks for helping.

Answer 1

Look at /proc/self/mountinfo; it has all the information in /proc/mounts and more (e.g., for bind mounts it tells you the mounted path within the source filesystem).