Commit Graph

4 Commits

Author SHA1 Message Date
Andrew Boie
225e4c0e76 kernel: greatly simplify syscall handlers
We now have macros which should significantly reduce the amount of
boilerplate involved with defining system call handlers.

- Macros which define the proper prototype based on number of arguments
- "SIMPLE" variants which create handlers that don't need anything
  other than object verification

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2017-10-12 16:26:28 -05:00
Andrew Boie
7e3d3d782f kernel: userspace.c code cleanup
- Dumping error messages split from _k_object_validate(), to avoid spam
  in test cases that are expected to have failure result.

- _k_object_find() prototype moved to syscall_handler.h

- Clean up k_object_access() implementation to avoid double object
  lookup and use single validation function

- Added comments, minor whitespace changes

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2017-10-12 16:26:28 -05:00
Andrew Boie
37ff5a9bc5 kernel: system call handler cleanup
Use new _SYSCALL_OBJ/_SYSCALL_OBJ_INIT macros.

Use new _SYSCALL_MEMORY_READ/_SYSCALL_MEMORY_WRITE macros.

Some non-obvious checks changed to use _SYSCALL_VERIFY_MSG.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2017-10-11 17:54:47 -07:00
Andrew Boie
743e4686a0 kernel: add syscalls for k_object_access APIs
These modify kernel object metadata and are intended to be callable from
user threads, need a privilege elevation for these to work.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2017-10-05 12:53:41 -04:00