23 lines
935 B
C
23 lines
935 B
C
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// madvise_guard_box.h - Box: Safe madvise wrapper with DSO guard
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// Responsibility: guard madvise() against DSO/text pointers and handle ENOMEM once
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// Controls: HAKMEM_SS_MADVISE_GUARD (default: on), HAKMEM_SS_MADVISE_GUARD_QUIET
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#ifndef HAKMEM_MADVISE_GUARD_BOX_H
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#define HAKMEM_MADVISE_GUARD_BOX_H
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#include <stddef.h>
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// Returns 1 when guard is enabled (default), 0 when disabled via env.
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int ss_madvise_guard_enabled(void);
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// Returns 1 when guard logging is silenced (HAKMEM_SS_MADVISE_GUARD_QUIET != 0).
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int ss_madvise_guard_quiet_logs(void);
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// Guarded madvise:
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// - Skips DSO/text addresses (dladdr hit) to avoid touching .fini_array
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// - ENOMEM: disables future madvise calls (soft fail)
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// - EINVAL: returns -1 so caller can honor STRICT mode
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// - Other errors: increments counters, returns 0
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int ss_os_madvise_guarded(void* ptr, size_t len, int advice, const char* where);
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#endif // HAKMEM_MADVISE_GUARD_BOX_H
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