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btstack_tlv_posix: allow to ignore db on disk and/or set read-only

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This commit is contained in:
Matthias Ringwald 2023-06-12 09:59:48 +02:00
parent a7e127d3ed
commit 6314722e05
2 changed files with 17 additions and 11 deletions
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22
platform/posix/btstack_tlv_posix.c
View File

@ -68,14 +68,12 @@ typedef struct tlv_entry {
} tlv_entry_t;
// testing support
static bool btstack_tlv_posix_read_only;
static bool btstack_tlv_posix_read_only = false;
static void btstack_tlv_posix_append_tag(btstack_tlv_posix_t * self, uint32_t tag, const uint8_t * data, uint32_t data_size){
if (!self->file) return;
if (btstack_tlv_posix_read_only) return;
log_info("append tag %04x, len %u", tag, data_size);
uint8_t header[8];
@ -180,7 +178,8 @@ static int btstack_tlv_posix_store_tag(void * context, uint32_t tag, const uint8
static int btstack_tlv_posix_read_db(btstack_tlv_posix_t * self){
// open file
log_info("open db %s", self->db_path);
self->file = fopen(self->db_path,"r+");
const char * mode = btstack_tlv_posix_read_only ? "r" : "r+";
self->file = fopen(self->db_path, mode);
uint8_t header[BTSTACK_TLV_HEADER_LEN];
if (self->file){
// checker header
@ -239,6 +238,14 @@ static int btstack_tlv_posix_read_db(btstack_tlv_posix_t * self){
self->file = NULL;
}
}
// close file in read-only mode
if (btstack_tlv_posix_read_only && (self->file != NULL)){
fclose(self->file);
self->file = NULL;
return 0;
}
if (!self->file){
// create truncate file
self->file = fopen(self->db_path,"w+");
@ -273,8 +280,6 @@ const btstack_tlv_t * btstack_tlv_posix_init_instance(btstack_tlv_posix_t * self
memset(self, 0, sizeof(btstack_tlv_posix_t));
self->db_path = db_path;
btstack_tlv_posix_read_only = false;
// read DB
if (db_path != NULL){
btstack_tlv_posix_read_db(self);
@ -282,8 +287,8 @@ const btstack_tlv_t * btstack_tlv_posix_init_instance(btstack_tlv_posix_t * self
return &btstack_tlv_posix;
}
void btstack_tlv_posix_set_read_only(bool read_only){
btstack_tlv_posix_read_only = read_only;
void btstack_tlv_posix_set_read_only(void){
btstack_tlv_posix_read_only = true;
}
/**
@ -299,4 +304,5 @@ void btstack_tlv_posix_deinit(btstack_tlv_posix_t * self){
btstack_linked_list_iterator_remove(&it);
free(entry);
}
btstack_tlv_posix_read_only = true;
}

6
platform/posix/btstack_tlv_posix.h
View File

@ -62,10 +62,10 @@ typedef struct {
const btstack_tlv_t * btstack_tlv_posix_init_instance(btstack_tlv_posix_t * context, const char * db_path);
/**
* Enable/disable writing to TLV file
* @param read_only, default: false
* Disable writing to TLV file
* @note must be called before btstack_tlv_posix_init_instance
*/
void btstack_tlv_posix_set_read_only(bool read_only);
void btstack_tlv_posix_set_read_only(void);
/**
* Free TLV entries