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ddd1a4ef5a
The modern upstream kernel has a ->iterate() readdir file_operattions method which takes a context and calls dir_emit(). We add some kernelcompat helpers to juggle the various function definitions, types, and arguments to support both the old ->readdir(filldir) and the new ->iterate(ctx) interfaces. Signed-off-by: Zach Brown <zab@versity.com>
37 lines
960 B
Makefile
37 lines
960 B
Makefile
#
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# We try to detect the specific api incompatibilities with simple tests
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# because distros regularly backport features without changing the
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# version.
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#
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ccflags-y += -include $(src)/kernelcompat.h
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#
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# v3.10-rc6-21-gbb6f619b3a49
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#
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# _readdir changes from fop->readdir() to fop->iterate() and from
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# filldir(dirent) to dir_emit(ctx).
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#
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ifneq (,$(shell grep 'iterate.*dir_context' include/linux/fs.h))
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ccflags-y += -DKC_ITERATE_DIR_CONTEXT
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endif
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#
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# v3.10-rc6-23-g5f99f4e79abc
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#
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# Helpers including dir_emit_dots() are added in the process of
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# switching dcache_readdir() from fop->readdir() to fop->iterate()
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#
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ifneq (,$(shell grep 'dir_emit_dots' include/linux/fs.h))
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ccflags-y += -DKC_DIR_EMIT_DOTS
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endif
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#
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# RHEL extended the fop struct so to use it we have to set
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# a flag to indicate that the struct is large enough and
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# contains the pointer.
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#
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ifneq (,$(shell grep 'FMODE_KABI_ITERATE' include/linux/fs.h))
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ccflags-y += -DKC_FMODE_KABI_ITERATE
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endif
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