87b2d44026
Setting SEAL_WRITE is not possible if there're pending GUP users. This commit adds selftests for memfd+sealing that use FUSE to create pending page-references. FUSE is very helpful here in that it allows us to delay direct-IO operations for an arbitrary amount of time. This way, we can force the kernel to pin pages and then run our normal selftests. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Ryan Lortie <desrt@desrt.ca> Cc: Lennart Poettering <lennart@poettering.net> Cc: Daniel Mack <zonque@gmail.com> Cc: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
42 lines
972 B
Makefile
42 lines
972 B
Makefile
uname_M := $(shell uname -m 2>/dev/null || echo not)
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ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/i386/)
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ifeq ($(ARCH),i386)
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ARCH := X86
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endif
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ifeq ($(ARCH),x86_64)
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ARCH := X86
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endif
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CFLAGS += -D_FILE_OFFSET_BITS=64
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CFLAGS += -I../../../../arch/x86/include/generated/uapi/
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CFLAGS += -I../../../../arch/x86/include/uapi/
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CFLAGS += -I../../../../include/uapi/
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CFLAGS += -I../../../../include/
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all:
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ifeq ($(ARCH),X86)
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gcc $(CFLAGS) memfd_test.c -o memfd_test
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else
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echo "Not an x86 target, can't build memfd selftest"
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endif
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run_tests: all
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ifeq ($(ARCH),X86)
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gcc $(CFLAGS) memfd_test.c -o memfd_test
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endif
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@./memfd_test || echo "memfd_test: [FAIL]"
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build_fuse:
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ifeq ($(ARCH),X86)
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gcc $(CFLAGS) fuse_mnt.c `pkg-config fuse --cflags --libs` -o fuse_mnt
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gcc $(CFLAGS) fuse_test.c -o fuse_test
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else
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echo "Not an x86 target, can't build memfd selftest"
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endif
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run_fuse: build_fuse
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@./run_fuse_test.sh || echo "fuse_test: [FAIL]"
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clean:
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$(RM) memfd_test fuse_test
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