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Old 12-26-2011, 10:05 AM   #1
Mike Edwards
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Registered: Dec 2011
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Linux user space stack


Can any one brief me how linux user space stack is organsied and who manges its operations.
 
Old 12-26-2011, 11:02 AM   #2
jhwilliams
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User space processes are children of init, which is started by the kernel upon boot. They interface with the kernel by means of system calls, file I/O, ioctls, and other mechanisms. The processes are managed by the process scheduler. There activities are fenced by a number of protection mechanisms offered in the system calls.

^^ About a year of a computer science degreee compressed into a paragraph

Unless, are you referring to things like spidev, or uinput -- User space interfaces for kernel subsystems? In this case, the magic is mostly just in exposing the right things in /dev and /sys, for direct manipulation via file descriptor, from userspace.

Last edited by jhwilliams; 12-26-2011 at 11:03 AM.
 
  


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