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/* Subpart directory entry version 1 support */
/* SPDX-License-Identifier: GPL-2.0-only */
#include <sys/types.h>
#include "cse_serger.h"
#define SUBPART_OFFSET_SHIFT 0
#define SUBPART_OFFSET_MASK 0x1ffffff
#define SUBPART_OFFSET(x) (((x) >> SUBPART_OFFSET_SHIFT) & SUBPART_OFFSET_MASK)
#define SUBPART_COMPRESSED_SHIFT 25
#define SUBPART_COMPRESSED_MASK 1
#define SUBPART_COMPRESSED(x) \
(((x) >> SUBPART_COMPRESSED_SHIFT) & SUBPART_COMPRESSED_MASK)
struct subpart_entry {
uint8_t name[12];
uint32_t offset_bytes;
uint32_t length;
uint32_t rsvd2;
} __packed;
static void subpart_read_entry(struct buffer *buff, struct subpart_entry *e)
{
READ_MEMBER(buff, e->name);
READ_MEMBER(buff, e->offset_bytes);
READ_MEMBER(buff, e->length);
READ_MEMBER(buff, e->rsvd2);
}
static void subpart_print_entry(const struct subpart_entry *e, size_t index)
{
printf("%-25zd%-25.12s0x%-23x%-25c0x%-23x0x%-23x\n", index,
e->name, SUBPART_OFFSET(e->offset_bytes),
SUBPART_COMPRESSED(e->offset_bytes) ? 'Y' : 'N',
e->length, e->rsvd2);
}
static void subpart_print_entries(struct buffer *buff, size_t count)
{
struct subpart_entry *e = malloc(count * sizeof(*e));
if (!e)
return;
for (size_t i = 0; i < count; i++)
subpart_read_entry(buff, &e[i]);
printf("%-25s%-25s%-25s%-25s%-25s%-25s\n", "Entry #", "Name", "Offset",
"Huffman Compressed?", "Length", "Rsvd");
printf("====================================================================="
"=====================================================================\n");
for (size_t i = 0; i < count; i++)
subpart_print_entry(&e[i], i + 1);
printf("====================================================================="
"=====================================================================\n");
free(e);
}
const struct subpart_entry_ops subpart_entry_1_ops = {
.print = subpart_print_entries,
};
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