I am designing an application on Android that needs to access hardware
registers from user space. The application is integrated to external/
skia. First, I have to determine the virtual address of my hardware by
doing a device open("/dev/mem", O_RDWR|O_SYNC) followed by a mmap(...)Linux-2.6.29-dirty Android Volume Deamon version 2.0 Issue: The open() operation is failing with a EACCES(13) error: I dont have permission. Observation1: I have noticed config files having the following flags: CONFIG_DEVMEM CONFIG_STRICT_DEVMEM in Kconfig.debug in kernel/arch/x86 and in other places (generated files). Observation2: I also tried to alter the AndroidManifest.xml for my application (Camera) to add a permission called "HARDWARE_TEST". The PackageManager rejected the permission at start-up. Observation3: When my application was a standalone executable that I invoked from the shell, I did not have that problem. Questions: 1. What are the rules behind permission to open the mem device ? 2. What is the usage of the config flags related to DEVMEM and can they help me? 3. Where is the master config file that generates all the generated files? 4. Is there anything I can do via the permission inside the xml manifests ? Thanks, Manu -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
