Al Viro b4e9c9549f
introduction of regset ->get() wrappers, switching ELF coredumps to those ...
Two new helpers: given a process and regset, dump into a buffer.
regset_get() takes a buffer and size, regset_get_alloc() takes size
and allocates a buffer.
Return value in both cases is the amount of data actually dumped in
case of success or -E... on error.
In both cases the size is capped by regset->n * regset->size, so
->get() is called with offset 0 and size no more than what regset
expects.
binfmt_elf.c callers of ->get() are switched to using those; the other
caller (copy_regset_to_user()) will need some preparations to switch.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk >
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