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-rw-r--r--lib/sqfs/id_table.c91
1 files changed, 35 insertions, 56 deletions
diff --git a/lib/sqfs/id_table.c b/lib/sqfs/id_table.c
index 12f2f20..746a5cc 100644
--- a/lib/sqfs/id_table.c
+++ b/lib/sqfs/id_table.c
@@ -12,6 +12,7 @@
#include "sqfs/table.h"
#include "sqfs/error.h"
#include "compat.h"
+#include "array.h"
#include <stdlib.h>
#include <string.h>
@@ -19,40 +20,30 @@
struct sqfs_id_table_t {
sqfs_object_t base;
- sqfs_u32 *ids;
- size_t num_ids;
- size_t max_ids;
+ array_t ids;
};
static void id_table_destroy(sqfs_object_t *obj)
{
sqfs_id_table_t *tbl = (sqfs_id_table_t *)obj;
- free(tbl->ids);
+ array_cleanup(&tbl->ids);
free(tbl);
}
static sqfs_object_t *id_table_copy(const sqfs_object_t *obj)
{
const sqfs_id_table_t *tbl = (const sqfs_id_table_t *)obj;
- sqfs_id_table_t *copy;
+ sqfs_id_table_t *copy = calloc(1, sizeof(*copy));
- copy = malloc(sizeof(*copy));
if (copy == NULL)
return NULL;
- memcpy(copy, tbl, sizeof(*tbl));
-
- copy->num_ids = tbl->num_ids;
- copy->max_ids = tbl->num_ids;
- copy->ids = malloc(tbl->num_ids * sizeof(tbl->ids[0]));
-
- if (copy->ids == NULL) {
+ if (array_init_copy(&copy->ids, &tbl->ids) != 0) {
free(copy);
return NULL;
}
- memcpy(copy->ids, tbl->ids, tbl->num_ids * sizeof(tbl->ids[0]));
return (sqfs_object_t *)copy;
}
@@ -66,6 +57,8 @@ sqfs_id_table_t *sqfs_id_table_create(sqfs_u32 flags)
tbl = calloc(1, sizeof(sqfs_id_table_t));
if (tbl != NULL) {
+ array_init(&tbl->ids, sizeof(sqfs_u32), 0);
+
((sqfs_object_t *)tbl)->destroy = id_table_destroy;
((sqfs_object_t *)tbl)->copy = id_table_copy;
}
@@ -75,42 +68,29 @@ sqfs_id_table_t *sqfs_id_table_create(sqfs_u32 flags)
int sqfs_id_table_id_to_index(sqfs_id_table_t *tbl, sqfs_u32 id, sqfs_u16 *out)
{
- sqfs_u32 *ptr;
- size_t i, sz;
+ size_t i;
- for (i = 0; i < tbl->num_ids; ++i) {
- if (tbl->ids[i] == id) {
+ for (i = 0; i < tbl->ids.used; ++i) {
+ if (((sqfs_u32 *)tbl->ids.data)[i] == id) {
*out = i;
return 0;
}
}
- if (tbl->num_ids == 0x10000)
+ if (tbl->ids.used == 0x10000)
return SQFS_ERROR_OVERFLOW;
- if (tbl->num_ids == tbl->max_ids) {
- sz = (tbl->max_ids ? tbl->max_ids * 2 : 16);
- ptr = realloc(tbl->ids, sizeof(tbl->ids[0]) * sz);
-
- if (ptr == NULL)
- return SQFS_ERROR_ALLOC;
-
- tbl->ids = ptr;
- tbl->max_ids = sz;
- }
-
- *out = tbl->num_ids;
- tbl->ids[tbl->num_ids++] = id;
- return 0;
+ *out = tbl->ids.used;
+ return array_append(&tbl->ids, &id);
}
int sqfs_id_table_index_to_id(const sqfs_id_table_t *tbl, sqfs_u16 index,
sqfs_u32 *out)
{
- if (index >= tbl->num_ids)
+ if (index >= tbl->ids.used)
return SQFS_ERROR_OUT_OF_BOUNDS;
- *out = tbl->ids[index];
+ *out = ((sqfs_u32 *)tbl->ids.data)[index];
return 0;
}
@@ -122,13 +102,6 @@ int sqfs_id_table_read(sqfs_id_table_t *tbl, sqfs_file_t *file,
size_t i;
int ret;
- if (tbl->ids != NULL) {
- free(tbl->ids);
- tbl->num_ids = 0;
- tbl->max_ids = 0;
- tbl->ids = NULL;
- }
-
if (!super->id_count || super->id_table_start >= super->bytes_used)
return SQFS_ERROR_CORRUPTED;
@@ -145,19 +118,21 @@ int sqfs_id_table_read(sqfs_id_table_t *tbl, sqfs_file_t *file,
lower_limit = super->export_table_start;
}
- tbl->num_ids = super->id_count;
- tbl->max_ids = super->id_count;
- ret = sqfs_read_table(file, cmp, tbl->num_ids * sizeof(sqfs_u32),
+ array_cleanup(&tbl->ids);
+ tbl->ids.size = sizeof(sqfs_u32);
+
+ ret = sqfs_read_table(file, cmp, super->id_count * sizeof(sqfs_u32),
super->id_table_start, lower_limit,
upper_limit, &raw_ids);
if (ret)
return ret;
- tbl->ids = raw_ids;
-
- for (i = 0; i < tbl->num_ids; ++i)
- tbl->ids[i] = le32toh(tbl->ids[i]);
+ for (i = 0; i < super->id_count; ++i)
+ ((sqfs_u32 *)raw_ids)[i] = le32toh(((sqfs_u32 *)raw_ids)[i]);
+ tbl->ids.data = raw_ids;
+ tbl->ids.used = super->id_count;
+ tbl->ids.count = super->id_count;
return 0;
}
@@ -168,18 +143,22 @@ int sqfs_id_table_write(sqfs_id_table_t *tbl, sqfs_file_t *file,
size_t i;
int ret;
- for (i = 0; i < tbl->num_ids; ++i)
- tbl->ids[i] = htole32(tbl->ids[i]);
+ for (i = 0; i < tbl->ids.used; ++i) {
+ ((sqfs_u32 *)tbl->ids.data)[i] =
+ htole32(((sqfs_u32 *)tbl->ids.data)[i]);
+ }
- super->id_count = tbl->num_ids;
+ super->id_count = tbl->ids.used;
- ret = sqfs_write_table(file, cmp, tbl->ids,
- sizeof(tbl->ids[0]) * tbl->num_ids, &start);
+ ret = sqfs_write_table(file, cmp, tbl->ids.data,
+ sizeof(sqfs_u32) * tbl->ids.used, &start);
super->id_table_start = start;
- for (i = 0; i < tbl->num_ids; ++i)
- tbl->ids[i] = le32toh(tbl->ids[i]);
+ for (i = 0; i < tbl->ids.used; ++i) {
+ ((sqfs_u32 *)tbl->ids.data)[i] =
+ le32toh(((sqfs_u32 *)tbl->ids.data)[i]);
+ }
return ret;
}