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authorToomas Soome <tsoome@me.com>2021-09-12 13:43:58 +0300
committerToomas Soome <tsoome@me.com>2022-08-30 19:09:40 +0300
commit2570281cf351044b6936651ce26dbe1f801dcbd8 (patch)
tree54957dc5692258b6308df50c8d0f73a334421091 /usr/src/lib/libtnf/ref.c
parent2ec63ffb3ec249bd7cb4523118c8437e6c6be335 (diff)
downloadillumos-gate-2570281cf351044b6936651ce26dbe1f801dcbd8.tar.gz
14079 remove TNF
Reviewed by: Gordon Ross <gordon.w.ross@gmail.com> Reviewed by: Igor Kozhukhov <igor@dilos.org> Approved by: Garrett D'Amore <garrett@damore.org>
Diffstat (limited to 'usr/src/lib/libtnf/ref.c')
-rw-r--r--usr/src/lib/libtnf/ref.c232
1 files changed, 0 insertions, 232 deletions
diff --git a/usr/src/lib/libtnf/ref.c b/usr/src/lib/libtnf/ref.c
deleted file mode 100644
index 07e0ccccfb..0000000000
--- a/usr/src/lib/libtnf/ref.c
+++ /dev/null
@@ -1,232 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License, Version 1.0 only
- * (the "License"). You may not use this file except in compliance
- * with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-/*
- * Copyright (c) 1994, by Sun Microsytems, Inc.
- */
-
-#pragma ident "%Z%%M% %I% %E% SMI"
-
-#include "libtnf.h"
-
-/*
- * Unoptimized versions, always dereference a cell through _GET_INT32()
- *
- */
-
-#define LONG_SIGN_BIT 0x80000000
-
-static tnf_ref32_t *vaddr_to_phys(TNF *, tnf_ref32_t *, tnf_ref32_t);
-
-/*
- * Return target cell referred to via src_val from src_cell, after
- * checking that target is valid (block was not reused). Return NULL
- * otherwise.
- *
- * NOTE: We must check if the destination is within the valid_bytes
- * range of its block, so as to correctly handle tnfxtract'ed files:
- * the block containing the target cell may have been copied out
- * before the block containing the source cell.
- */
-
-static tnf_ref32_t *
-vaddr_to_phys(TNF *tnf, tnf_ref32_t *src_cell, tnf_ref32_t src_val)
-{
- char *base;
- unsigned shft, mask;
- tnf_uint32_t src_gen, dst_gen, exp_gen;
- tnf_int32_t gen_delta;
- tnf_ref32_t src_off, exp_off, dst_off, *dst_blk, *dst_cell;
- tnf_uint32_t bytes_valid;
-
- base = tnf->file_start;
- shft = tnf->generation_shift;
- mask = tnf->address_mask;
-
- /* Generation of source cell */
- /* LINTED pointer cast */
- src_gen = _GET_BLOCK_GENERATION(tnf, _GET_BLOCK(tnf, src_cell));
- /* Physical file offset of source cell */
- src_off = (tnf_ref32_t)((char *)src_cell - base);
- /* Expected (unadjusted) file offset of destination cell */
- exp_off = src_off + src_val;
- /* Generation delta */
- gen_delta = (tnf_int32_t)((unsigned)exp_off >> shft);
- if ((exp_off & LONG_SIGN_BIT) == LONG_SIGN_BIT) {
- /* sign bit was a 1 - so restore sign */
- gen_delta |= ((unsigned)mask << (32 - shft));
- }
- /* Expected destination generation */
- exp_gen = src_gen + gen_delta;
- /* Physical file offset of destination cell */
- dst_off = (tnf_ref32_t)((unsigned)exp_off & mask);
-
- /* Destination cell */
- /* LINTED pointer cast */
- dst_cell = (tnf_ref32_t *)(base + dst_off);
- /* Destination block */
- /* LINTED pointer cast */
- dst_blk = _GET_BLOCK(tnf, dst_cell);
- /* Generation of destination cell */
- /* LINTED pointer cast */
- dst_gen = _GET_BLOCK_GENERATION(tnf, dst_blk);
- /* Bytes valid in destination block */
- /* LINTED pointer cast */
- bytes_valid = _GET_BLOCK_BYTES_VALID(tnf, dst_blk);
-
- if ((src_gen == (tnf_uint32_t)TNF_TAG_GENERATION_NUM) ||
- (dst_gen == (tnf_uint32_t)TNF_TAG_GENERATION_NUM) ||
- ((dst_gen == exp_gen) &&
- ((char *)dst_cell - (char *)dst_blk) < bytes_valid))
- return (dst_cell);
-
- return ((tnf_ref32_t *)NULL);
-}
-
-/*
- * Return the target referent of a cell, chasing forwarding references.
- * Return TNF_NULL if cell is a TNF_NULL forwarding reference.
- */
-
-tnf_ref32_t *
-_tnf_get_ref32(TNF *tnf, tnf_ref32_t *cell)
-{
- tnf_ref32_t ref32, reftemp;
-
- ref32 = _GET_INT32(tnf, cell);
-
- if (TNF_REF32_IS_NULL(ref32))
- return (TNF_NULL);
-
- if (TNF_REF32_IS_RSVD(ref32)) {
- _tnf_error(tnf, TNF_ERR_BADREFTYPE);
- return (TNF_NULL);
- }
-
- if (TNF_REF32_IS_PAIR(ref32)) {
- /* We chase the high (tag) half */
- tnf_ref16_t tag16;
-
- tag16 = TNF_REF32_TAG16(ref32);
-
- if (TNF_TAG16_IS_ABS(tag16)) {
- cell = (tnf_ref32_t *)
- ((char *)tnf->file_start
-/* LINTED pointer cast may result in improper alignment */
- + TNF_TAG16_ABS16(tag16));
- ref32 = _GET_INT32(tnf, cell);
-
- } else if (TNF_TAG16_IS_REL(tag16)) {
- cell = vaddr_to_phys(tnf, cell,
- (tnf_ref32_t) TNF_TAG16_REF16(tag16));
- if (cell == TNF_NULL)
- return (TNF_NULL);
- ref32 = _GET_INT32(tnf, cell);
-
- } else {
- _tnf_error(tnf, TNF_ERR_BADREFTYPE);
- return (TNF_NULL);
- }
-
- } else if (TNF_REF32_IS_PERMANENT(ref32)) {
- /* permanent space pointer */
- reftemp = TNF_REF32_VALUE(ref32);
- reftemp = TNF_REF32_SIGN_EXTEND(reftemp);
- /* LINTED pointer cast may result in improper alignment */
- cell = (tnf_ref32_t *) ((char *)tnf->file_start + reftemp);
- ref32 = _GET_INT32(tnf, cell);
-
- } else { /* full/tag reclaimable space reference */
- cell = vaddr_to_phys(tnf, cell, TNF_REF32_VALUE(ref32));
- if (cell == TNF_NULL)
- return (TNF_NULL);
- ref32 = _GET_INT32(tnf, cell);
- }
-
- /* chase intermediate forwarding references */
- while (ref32 && TNF_REF32_IS_FWD(ref32)) {
- if (TNF_REF32_IS_PERMANENT(ref32)) {
- reftemp = TNF_REF32_VALUE(ref32);
- reftemp = TNF_REF32_SIGN_EXTEND(reftemp);
- cell = (tnf_ref32_t *) ((char *)tnf->file_start +
- /* LINTED pointer cast may result in improper alignment */
- reftemp);
-
- } else {
- cell = vaddr_to_phys(tnf, cell, TNF_REF32_VALUE(ref32));
- if (cell == TNF_NULL)
- return (TNF_NULL);
- }
- ref32 = _GET_INT32(tnf, cell);
- }
-
- return (cell);
-}
-
-/*
- * Return the target referent of ref16 contained in cell.
- * Return TNF_NULL if cell doesn't have a ref16.
- */
-
-tnf_ref32_t *
-_tnf_get_ref16(TNF *tnf, tnf_ref32_t *cell)
-{
- tnf_ref32_t ref32, reftemp;
-
- ref32 = _GET_INT32(tnf, cell);
-
- if (TNF_REF32_IS_PAIR(ref32)) {
- tnf_ref16_t ref16;
-
- ref16 = TNF_REF32_REF16(ref32);
-
- if (TNF_REF16_VALUE(ref16) == TNF_NULL)
- /* No ref16 was stored */
- return (TNF_NULL);
- else {
- cell = vaddr_to_phys(tnf, cell,
- (tnf_ref32_t) TNF_REF16_VALUE(ref16));
- if (cell == TNF_NULL)
- return (TNF_NULL);
- ref32 = _GET_INT32(tnf, cell);
- }
- } else /* not a pair pointer */
- return (TNF_NULL);
-
- /* chase intermediate forwarding references */
- while (ref32 && TNF_REF32_IS_FWD(ref32)) {
- if (TNF_REF32_IS_PERMANENT(ref32)) {
- reftemp = TNF_REF32_VALUE(ref32);
- reftemp = TNF_REF32_SIGN_EXTEND(reftemp);
- cell = (tnf_ref32_t *) ((char *)tnf->file_start +
- /* LINTED pointer cast may result in improper alignment */
- reftemp);
-
- } else {
- cell = vaddr_to_phys(tnf, cell, TNF_REF32_VALUE(ref32));
- if (cell == TNF_NULL)
- return (TNF_NULL);
- }
- ref32 = _GET_INT32(tnf, cell);
- }
-
- return (cell);
-}