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deps.c implements zap_page_range_single() as a runtime compat shim (resolved via kallsyms_lookup_name), but deps.h never declared its prototype, and binder_alloc.c did not include deps.h. Newer compilers (Clang, building with -std=gnu11 and later defaults) treat an implicit function declaration as a hard error rather than a warning, so the module fails to build: binder_alloc.c:1029:3: error: call to undeclared function 'zap_page_range_single'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] Declare the prototype in deps.h and include it from binder_alloc.c. Verified the module builds and links cleanly (binder_linux.ko) against kernel 7.1.1 with the fix applied; previously failed with the error above.
9 lines
277 B
C
9 lines
277 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/ipc_namespace.h>
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#include <linux/mm.h>
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struct ipc_namespace* get_init_ipc_ns_ptr(void);
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void zap_page_range_single(struct vm_area_struct *vma, unsigned long address,
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unsigned long size, struct zap_details *details);
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