Matt Helsley wrote: > Using kernel headers directly from userspace is strongly discouraged. > This patch attempts to sanitize kernel headers for userspace by > extracting non-__KERNEL__ portions of the various checkpoint headers > and placing them in a similar organization of userspace headers. > > The script is run from the top level of the user-cr source tree like: > > ./scripts/extract-headers.sh -s <path-to-kern-source> -o ./include > > > The patch includes a copy of the auto-generated headers and adjusts > the user-cr programs to use them. > > Signed-off-by: Matt Helsley <[email protected]> > > TODO: Builds on i386. Probably needs more testing, especially on > other non-i386, non-32-bit platforms. > > Look at mergiing checkpoint_syscalls.h with checkpoint.h > Or at least find a better, shorter name for checkpoint_syscalls.h
I suppose this will go away once the syscall numbers are accepted to mainline and make it to the official (user space) headers ? > > NOTES: The script is much larger (2.5x) than for cr_tests because cr_tests > only required the syscall numbers and a few flags for the syscalls. > > The headers have a similar organization to the kernel headers > because struct ckpt_hdr must be defined before the arch hdrs and > yet CKPT_ARCH_NSIG must be defined before the generic signal hdrs. > Plus it's easier to avoid rewriting the paths within the include > directories... > > checkpoint_syscalls.h is a multi-arch file with all the syscall > numbers normally found in the arch's unistd.h. I chose to use a > different name to avoid clashes with /usr/include headers. > --- [...] > +CKPT_INCLUDE = -I./include > +CKPT_HEADERS = $(shell find ./include -name '*.h') > > # compile with debug ? > DEBUG = -DCHECKPOINT_DEBUG > @@ -39,6 +20,8 @@ OTHER = ckptinfo_types.c > > LDLIBS = -lm > > +.PHONY: all distclean clean headers install > + > all: $(PROGS) > @make -C test > > @@ -56,10 +39,16 @@ ckptinfo_types.c: $(CKPT_HEADERS) ckptinfo.py > > %.o: %.c > > +headers: > + ./scripts/extract-headers.sh -s ../linux-2.6.git Would be nice if this isn't hard-coded (perhaps an env-var ?) > + > install: > @echo /usr/bin/install -m 755 mktree ckpt rstr ckptinfo $(INSTALL_DIR) > @/usr/bin/install -m 755 mktree ckpt rstr ckptinfo $(INSTALL_DIR) > > +distclean: clean > + @rm -f $(CKPT_HEADERS) Would 'make headers' be automagically called on the next 'make' after the user does 'make distclean' ? If not, then $(CKPT_HEADERS) will be empty and this will break the dependencies of ckptinfo_types.c. Oren. _______________________________________________ Containers mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Devel mailing list [email protected] https://openvz.org/mailman/listinfo/devel
