From 409008f8960e24f5f2b25a84642cbb0c043f0ab9 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sat, 23 May 2020 00:19:30 -0400
Subject: library api: tpax_archive_seal(): initial implementation and
 integration.

---
 src/internal/tpax_driver_impl.h | 74 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

(limited to 'src/internal')

diff --git a/src/internal/tpax_driver_impl.h b/src/internal/tpax_driver_impl.h
index 7e610d0..4003305 100644
--- a/src/internal/tpax_driver_impl.h
+++ b/src/internal/tpax_driver_impl.h
@@ -52,12 +52,15 @@ struct tpax_driver_ctx_impl {
 	struct tpax_error_info        erribuf[64];
 	void *                        bufaddr;
 	size_t                        bufsize;
+	off_t                         cpos;
 };
 
 struct tpax_unit_ctx_impl {
 	const char *		path;
 	struct tpax_unit_ctx	uctx;
 	struct stat		st;
+	off_t			hpos;
+	off_t			dpos;
 	const char *		link;
 	char			linkbuf[1024];
 	union {
@@ -80,6 +83,17 @@ static inline struct tpax_driver_ctx_impl * tpax_get_driver_ictx(
         return 0;
 }
 
+static inline struct tpax_unit_ctx_impl * tpax_get_unit_ictx(
+	const struct tpax_unit_ctx * uctx)
+{
+	struct tpax_unit_ctx_impl *	ictx;
+	uintptr_t			addr;
+
+	addr = (uintptr_t)uctx - offsetof(struct tpax_unit_ctx_impl,uctx);
+	ictx = (struct tpax_unit_ctx_impl *)addr;
+	return ictx;
+}
+
 static inline void * tpax_get_driver_anon_map_addr(
 	const struct tpax_driver_ctx * dctx,
 	size_t *                       size)
@@ -143,4 +157,64 @@ static inline int tpax_driver_fddst(const struct tpax_driver_ctx * dctx)
 	return fdctx.fddst;
 }
 
+static inline off_t tpax_get_driver_cpos(const struct tpax_driver_ctx * dctx)
+{
+	struct tpax_driver_ctx_impl * ictx;
+	ictx = tpax_get_driver_ictx(dctx);
+	return ictx->cpos;
+}
+
+static inline void tpax_set_driver_cpos(const struct tpax_driver_ctx * dctx, off_t cpos)
+{
+	struct tpax_driver_ctx_impl * ictx;
+	ictx = tpax_get_driver_ictx(dctx);
+	ictx->cpos = cpos;
+}
+
+static inline off_t tpax_get_unit_hpos(const struct tpax_unit_ctx * uctx)
+{
+	struct tpax_unit_ctx_impl * ictx;
+	ictx = tpax_get_unit_ictx(uctx);
+	return ictx->hpos;
+}
+
+static inline void tpax_set_unit_hpos(const struct tpax_unit_ctx * uctx, off_t hpos)
+{
+	struct tpax_unit_ctx_impl * ictx;
+	ictx = tpax_get_unit_ictx(uctx);
+	ictx->hpos = hpos;
+}
+
+static inline off_t tpax_get_unit_dpos(const struct tpax_unit_ctx * uctx)
+{
+	struct tpax_unit_ctx_impl * ictx;
+	ictx = tpax_get_unit_ictx(uctx);
+	return ictx->dpos;
+}
+
+static inline void tpax_set_unit_dpos(const struct tpax_unit_ctx * uctx, off_t dpos)
+{
+	struct tpax_unit_ctx_impl * ictx;
+	ictx = tpax_get_unit_ictx(uctx);
+	ictx->dpos = dpos;
+}
+
+static inline ssize_t tpax_get_archive_block_size(const struct tpax_driver_ctx * dctx)
+{
+	if (dctx->cctx->drvflags & TPAX_DRIVER_WRITE_FORMAT_PAX)
+		return TPAX_PAX_BLOCK_SIZE;
+
+	else if (dctx->cctx->drvflags & TPAX_DRIVER_WRITE_FORMAT_CPIO)
+		return TPAX_CPIO_BLOCK_SIZE;
+
+	else if (dctx->cctx->drvflags & TPAX_DRIVER_WRITE_FORMAT_USTAR)
+		return TPAX_USTAR_BLOCK_SIZE;
+
+	else if (dctx->cctx->drvflags & TPAX_DRIVER_WRITE_FORMAT_RUSTAR)
+		return TPAX_USTAR_BLOCK_SIZE;
+
+	else
+		return 0;
+}
+
 #endif
-- 
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