Cedric Herreman wrote:
*/Gilles Chanteperdrix <[EMAIL PROTECTED]>/* wrote:

    Cedric Herreman wrote:
     > Hello,
     >
     > I have created a memory heap in the init_module routine of a
    kernel module :
     >
    
rt_heap_create(&heap_data,"RT_LOG_HEAP",sizeof(ttv_log_data),H_FIFO|H_SHARED);
     > and
     > rt_heap_alloc(&heap_data,0,TM_NONBLOCK,&loc_ptr);
     > Both calls return succesful.
     >
     > When i try to bind to this memory in an user space application :
     > rt_heap_bind(&rt_heap,"RT_LOG_HEAP",TM_NONBLOCK);
     > the call returns with error -2, this error does not seem to be
    documented (i test on all the constants defined in the html API
    docs, xenomai v2.0).
     >
     > Can anyone give me a hint on what's wrong here ?

    -2 is -ENOENT, no such file or directory.

    You are probably missing the /dev/rtheap file. In order to create it,
    run "make devices" with root privileges.

    Gilles Chanteperdrix.

Yes, i was. I added the file on the target system (doesn't have the src tree, so i can't "run make devices") like this :
mknod /dev/rtheap b 1 0

mknod /dev/rtheap c 10 254


Now, it is giving me the error : -EPERM. The doc says the call is made from a context that cannot sleep (interrupt, non-realtime, scheduler locked). Is it not possible to link to shared mem from a non-realtime userspace application in this way ?

Cedric.

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--

Philippe.

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