mirror of
https://github.com/praetorian-inc/wasmforge
synced 2026-06-22 22:52:31 +00:00
Michael Weber
30 lines
1.5 KiB
C
30 lines
1.5 KiB
C
// pinvoke_winspool_ext.c — winspool.drv P/Invoke bridge for NativeAOT-WASI.
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// Forwards EnumPrintersW to wf_call.
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//
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// Seatbelt's PrintersCommand was disabled via patcher rule
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// ("Printers: disable (winspool bridge crash)") because the BCL
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// DllImport path crashed during struct marshaling. With this bridge
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// providing a typed wf_call entry, the patcher rule is removed in
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// Task 5.2 and the C# EnumPrinters chain works against winspool.drv.
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//
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// The BCL P/Invoke is "EnumPrinters" (no W) — DllImport convention
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// is unset CharSet→ANSI by default, but Seatbelt uses Unicode strings.
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// We dispatch to "EnumPrintersW" on the host regardless.
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#include "wf_bridge.h"
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// BOOL EnumPrintersW(DWORD Flags, LPWSTR Name, DWORD Level,
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// LPBYTE pPrinterEnum, DWORD cbBuf,
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// LPDWORD pcbNeeded, LPDWORD pcReturned);
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// pPrinterEnum is an output buffer (caller-allocated, cbBuf-sized) —
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// 4-byte overflow protection is fine because the host writes contiguous
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// PRINTER_INFO_* records that the caller's WASM-side buffer accommodates.
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uint32_t EnumPrinters(uint32_t Flags, uint32_t Name, uint32_t Level,
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uint32_t pPrinterEnum, uint32_t cbBuf,
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uint32_t pcbNeeded, uint32_t pcReturned) {
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return (uint32_t)wf_call("winspool.drv", "EnumPrintersW", 7,
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(uint64_t)Flags, (uint64_t)Name, (uint64_t)Level,
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(uint64_t)pPrinterEnum, (uint64_t)cbBuf,
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(uint64_t)pcbNeeded, (uint64_t)pcReturned);
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}
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