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dataman: add guards for max item value

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This commit is contained in:
Igor Mišić
2023-07-24 13:10:31 +02:00
committed by Beat Küng
parent 904f18f409
commit 3d6c376b47
1 changed files with 20 additions and 0 deletions
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src/modules/dataman/dataman.cpp
+20
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@@ -200,6 +200,10 @@ calculate_offset(dm_item_t item, unsigned index)
/* write to the data manager RAM buffer */
static ssize_t _ram_write(dm_item_t item, unsigned index, const void *buf, size_t count)
{
if (item >= DM_KEY_NUM_KEYS) {
return -1;
}
/* Get the offset for this item */
int offset = calculate_offset(item, index);
@@ -237,6 +241,10 @@ static ssize_t _ram_write(dm_item_t item, unsigned index, const void *buf, size_
static ssize_t
_file_write(dm_item_t item, unsigned index, const void *buf, size_t count)
{
if (item >= DM_KEY_NUM_KEYS) {
return -1;
}
unsigned char buffer[g_per_item_size_with_hdr[item]];
/* Get the offset for this item */
@@ -310,6 +318,10 @@ _file_write(dm_item_t item, unsigned index, const void *buf, size_t count)
/* Retrieve from the data manager RAM buffer*/
static ssize_t _ram_read(dm_item_t item, unsigned index, void *buf, size_t count)
{
if (item >= DM_KEY_NUM_KEYS) {
return -1;
}
/* Get the offset for this item */
int offset = calculate_offset(item, index);
@@ -426,6 +438,10 @@ _file_read(dm_item_t item, unsigned index, void *buf, size_t count)
static int _ram_clear(dm_item_t item)
{
if (item >= DM_KEY_NUM_KEYS) {
return -1;
}
int i;
int result = 0;
@@ -456,6 +472,10 @@ static int _ram_clear(dm_item_t item)
static int
_file_clear(dm_item_t item)
{
if (item >= DM_KEY_NUM_KEYS) {
return -1;
}
int i, result = 0;
/* Get the offset of 1st item of this type */