Linehu
b76e8f1556
- slow_path.c: KEY_MISS -> PCKC re-derive (retry OK); EPOCH -> refresh cap epoch via out_cap (retry OK); STALE_CAP permanent; MAC_FAILED/POISONED -> PCKC invalidate + DRR fault report; RETRY passthrough - status.h: add UTSM_ERR_MAC_FAILED (-11); utrw.h: slow path takes cap/rights/offset/len/reason + out_cap - selftest: EPOCH refresh + KEY_MISS re-derive + POISONED passthrough coverage, full SELFTEST PASS in QEMU (.build_tmp/qemu_serial_u2slowpath.log)
19 lines
673 B
C
19 lines
673 B
C
#ifndef UTSM_UTRW_H
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#define UTSM_UTRW_H
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#include <utsm/types.h>
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#include <utsm/status.h>
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#include <utsm/capability.h>
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int utsm_read(utsm_capability cap, u64 offset, void *dst, u64 len);
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int utsm_write(utsm_capability cap, u64 offset, const void *src, u64 len);
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/* U2: Slow Path —— Fast Path 失败后的恢复分支。
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* reason 为 Fast Path 返回的错误码；恢复成功返回 UTSM_OK（可重试），
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* EPOCH 场景经 out_cap 回传刷新后的凭证（可为 NULL）。
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* 其余返回值为不可恢复错误。 */
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int utsm_slow_path(utsm_capability cap, u32 rights, u64 offset, u64 len,
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int reason, utsm_capability *out_cap);
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#endif
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