int ploop_di_remove_image(struct ploop_disk_images_data *di, const char *guid,
int renew_top_uuid, char **fname)
{
int snap_id, image_id, nr_ch;
struct ploop_image_data *image = NULL;
struct ploop_snapshot_data *snapshot = NULL;
snap_id = find_snapshot_by_guid(di, guid);
if (snap_id == -1) {
ploop_err(0, "Unable to find snapshot by uuid %s",
guid);
return SYSEXIT_PARAM;
}
snapshot = di->snapshots[snap_id];
image_id = find_image_idx_by_guid(di, guid);
if (image_id == -1) {
ploop_err(0, "Unable to find image by uuid %s",
guid);
return SYSEXIT_PARAM;
}
nr_ch = ploop_get_child_count_by_uuid(di, guid);
if (nr_ch != 0) {
ploop_err(0, "Unable to delete snapshot %s: "
"it has %d child%s",
guid, nr_ch,
(nr_ch == 1) ? "" : "ren");
return SYSEXIT_PARAM;
}
if (guidcmp(snapshot->parent_guid, NONE_UUID) == 0) {
ploop_err(0, "Unable to delete image %s: it is a base image",
guid);
return SYSEXIT_PARAM;
}
image = di->images[image_id];
if (fname != NULL) {
*fname = strdup(image->file);
if (*fname == NULL)
return SYSEXIT_MALLOC;
}
ploop_log(3, "del snapshot %s", guid);
// update top uuid
if (renew_top_uuid && guidcmp(guid, di->top_guid) == 0)
ploop_di_change_guid(di, snapshot->parent_guid, TOPDELTA_UUID);
remove_data_from_array((void**)di->snapshots, di->nsnapshots, snap_id);
di->nsnapshots--;
remove_data_from_array((void**)di->images, di->nimages, image_id);
di->nimages--;
free_snapshot_data(snapshot);
free_image_data(image);
return 0;
}
static int is_old_snapshot_format(struct ploop_disk_images_data *di)
{
if (di->top_guid != NULL && !guidcmp(di->top_guid, TOPDELTA_UUID))
return 0;
ploop_err(0, "Snapshot is in old format");
return 1;
}
void ploop_di_change_guid(struct ploop_disk_images_data *di, const char *guid, const char *new_guid)
{
int i;
for (i = 0; i < di->nimages; i++)
if (guidcmp(di->images[i]->guid, guid) == 0)
strcpy(di->images[i]->guid, new_guid);
for (i = 0; i < di->nsnapshots; i++) {
if (guidcmp(di->snapshots[i]->guid, guid) == 0)
strcpy(di->snapshots[i]->guid, new_guid);
if (guidcmp(di->snapshots[i]->parent_guid, guid) == 0)
strcpy(di->snapshots[i]->parent_guid, new_guid);
}
if (guidcmp(di->top_guid, guid) == 0)
strcpy(di->top_guid, new_guid);
}
int ploop_get_child_count_by_uuid(struct ploop_disk_images_data *di, const char *guid)
{
int i, n = 0;
for (i = 0; i < di->nsnapshots; i++)
if (guidcmp(di->snapshots[i]->parent_guid, guid) == 0)
n++;
return n;
}
int find_image_idx_by_guid(struct ploop_disk_images_data *di, const char *guid)
{
int i;
for (i = 0; i < di->nimages; i++) {
if (!guidcmp(guid, di->images[i]->guid))
return i;
}
return -1;
}
/**
* efi_st_get_config_table() - get configuration table
*
* @guid: GUID of the configuration table
* Return: pointer to configuration table or NULL
*/
static void *efi_st_get_config_table(const efi_guid_t *guid)
{
size_t i;
for (i = 0; i < systab.nr_tables; i++) {
if (!guidcmp(guid, &systemtab->tables[i].guid))
return systemtab->tables[i].table;
}
return NULL;
}
char *ploop_find_parent_by_guid(struct ploop_disk_images_data *di, const char *guid)
{
int i;
i = find_snapshot_by_guid(di, guid);
if (i == -1)
return NULL;
if (guidcmp(di->snapshots[i]->parent_guid, NONE_UUID) == 0)
return NULL;
return di->snapshots[i]->parent_guid;
}
int find_snapshot_by_guid(struct ploop_disk_images_data *di, const char *guid)
{
int i;
if (guid == NULL)
return -1;
for (i = 0; i < di->nsnapshots; i++)
if (guidcmp(di->snapshots[i]->guid, guid) == 0)
return i;
return -1;
}
int ploop_get_child_by_uuid(struct ploop_disk_images_data *di, const char *guid, char **child_guid)
{
int i;
for (i = 0; i < di->nsnapshots; i++) {
if (guidcmp(di->snapshots[i]->parent_guid, guid) == 0) {
*child_guid = di->snapshots[i]->guid;
return 0;
}
}
return -1;
}
/**
* get_guid_text - get string of protocol guid
* @guid: Protocol guid
* Return: String
*
* Return string for display to represent the protocol.
*/
static const char *get_guid_text(const efi_guid_t *guid)
{
int i;
for (i = 0; i < ARRAY_SIZE(guid_list); i++)
if (!guidcmp(&guid_list[i].guid, guid))
break;
if (i != ARRAY_SIZE(guid_list))
return guid_list[i].text;
else
return NULL;
}
/* Convert to new format with constant TopGUID */
static int convert_disk_descriptor(struct ploop_disk_images_data *di)
{
if (di->top_guid == NULL) {
ploop_err(0, "Invalid DiskDescriptor.xml: TopGUID not found");
return -1;
}
if (!guidcmp(di->top_guid, TOPDELTA_UUID))
return 0;
ploop_log(0, "DiskDescriptor.xml is in old format: converting");
if ((find_image_by_guid(di, TOPDELTA_UUID) != NULL) ||
(find_snapshot_by_guid(di, TOPDELTA_UUID) != -1)) {
ploop_err(0, "Can't convert: %s is in use",
TOPDELTA_UUID);
return -1;
}
ploop_log(0, "Changing %s to %s",
di->top_guid, TOPDELTA_UUID);
ploop_di_change_guid(di, di->top_guid, TOPDELTA_UUID);
return 0;
}
int ploop_di_merge_image(struct ploop_disk_images_data *di, const char *guid, char **fname)
{
int i, snap_id, image_id, nr_ch;
struct ploop_image_data *image = NULL;
struct ploop_snapshot_data *snapshot = NULL;
snap_id = find_snapshot_by_guid(di, guid);
if (snap_id == -1) {
ploop_err(0, "Unable to find snapshot by uuid %s",
guid);
return SYSEXIT_PARAM;
}
snapshot = di->snapshots[snap_id];
image_id = find_image_idx_by_guid(di, guid);
if (image_id == -1) {
ploop_err(0, "Unable to find image by uuid %s",
guid);
return SYSEXIT_PARAM;
}
nr_ch = ploop_get_child_count_by_uuid(di, snapshot->parent_guid);
if (nr_ch > 1) {
ploop_err(0, "Unable to merge snapshot %s: "
"it has %d children",
guid, nr_ch);
return SYSEXIT_PARAM;
}
if (guidcmp(snapshot->parent_guid, NONE_UUID) == 0) {
ploop_err(0, "Unable to merge image %s: it is a base image",
guid);
return SYSEXIT_PARAM;
}
image = di->images[image_id];
if (fname != NULL) {
*fname = strdup(image->file);
if (*fname == NULL)
return SYSEXIT_MALLOC;
}
ploop_log(3, "merge snapshot %s -> %s",
snapshot->guid, snapshot->parent_guid);
/* Caller passed child_guid S2 to delete S1 (S1 <- S2 <- S3) (S2 <- S3)
* so it has merge S2 to S1 and we should update all S1 referrences to S2
*/
for (i = 0; i < di->nsnapshots; i++) {
if (guidcmp(di->snapshots[i]->guid, snapshot->parent_guid) == 0) {
strcpy(di->snapshots[i]->guid, guid);
/* preserve temporary flag */
di->snapshots[i]->temporary = snapshot->temporary;
}
}
for (i = 0; i < di->nimages; i++)
if (guidcmp(di->images[i]->guid, snapshot->parent_guid) == 0)
strcpy(di->images[i]->guid, guid);
remove_data_from_array((void**)di->snapshots, di->nsnapshots, snap_id);
di->nsnapshots--;
remove_data_from_array((void**)di->images, di->nimages, image_id);
di->nimages--;
if (guidcmp(snapshot->guid, TOPDELTA_UUID) == 0)
ploop_di_change_guid(di, snapshot->parent_guid, TOPDELTA_UUID);
free_snapshot_data(snapshot);
free_image_data(image);
return 0;
}
void asf_HeaderParse ( asf_header_t *hdr,
uint8_t *p_header, int i_header )
{
var_buffer_t buffer;
guid_t guid;
uint64_t i_size;
hdr->i_file_size = 0;
hdr->i_data_packets_count = 0;
hdr->i_min_data_packet_size = 0;
for( unsigned i = 0; i < 128; i++ )
{
hdr->stream[i].i_cat = ASF_CODEC_TYPE_UNKNOWN;
hdr->stream[i].i_selected = 0;
hdr->stream[i].i_bitrate = -1;
}
var_buffer_initread( &buffer, p_header, i_header );
var_buffer_getguid( &buffer, &guid );
if( !guidcmp( &guid, &asf_object_header_guid ) )
{
/* ERROR: */
}
var_buffer_getmemory( &buffer, NULL, 30 - 16 );
for( ;; )
{
var_buffer_getguid( &buffer, &guid );
i_size = var_buffer_get64( &buffer );
if( guidcmp( &guid, &asf_object_file_properties_guid ) )
{
var_buffer_getmemory( &buffer, NULL, 16 );
hdr->i_file_size = var_buffer_get64( &buffer );
var_buffer_getmemory( &buffer, NULL, 8 );
hdr->i_data_packets_count = var_buffer_get64( &buffer );
var_buffer_getmemory( &buffer, NULL, 8+8+8+4);
hdr->i_min_data_packet_size = var_buffer_get32( &buffer );
var_buffer_getmemory( &buffer, NULL, i_size - 24 - 16 - 8 - 8 - 8 - 8-8-8-4 - 4);
}
else if( guidcmp( &guid, &asf_object_header_extension_guid ) )
{
/* Enter it */
var_buffer_getmemory( &buffer, NULL, 46 - 24 );
}
else if( guidcmp( &guid, &asf_object_extended_stream_properties_guid ) )
{
/* Grrrrrr */
int16_t i_count1, i_count2;
int i_subsize;
var_buffer_getmemory( &buffer, NULL, 84 - 24 );
i_count1 = var_buffer_get16( &buffer );
i_count2 = var_buffer_get16( &buffer );
i_subsize = 88;
for( int i = 0; i < i_count1; i++ )
{
int i_len;
var_buffer_get16( &buffer );
i_len = var_buffer_get16( &buffer );
var_buffer_getmemory( &buffer, NULL, i_len );
i_subsize += 4 + i_len;
}
for( int i = 0; i < i_count2; i++ )
{
int i_len;
var_buffer_getmemory( &buffer, NULL, 16 + 2 );
i_len = var_buffer_get32( &buffer );
var_buffer_getmemory( &buffer, NULL, i_len );
i_subsize += 16 + 6 + i_len;
}
if( i_size - i_subsize <= 24 )
{
var_buffer_getmemory( &buffer, NULL, i_size - i_subsize );
}
/* It's a hack we just skip the first part of the object until
* the embed stream properties if any (ugly, but whose fault ?) */
}
else if( guidcmp( &guid, &asf_object_stream_properties_guid ) )
{
int i_stream_id;
guid_t stream_type;
var_buffer_getguid( &buffer, &stream_type );
var_buffer_getmemory( &buffer, NULL, 32 );
i_stream_id = var_buffer_get8( &buffer ) & 0x7f;
var_buffer_getmemory( &buffer, NULL, i_size - 24 - 32 - 16 - 1);
if( guidcmp( &stream_type, &asf_object_stream_type_video ) )
{
hdr->stream[i_stream_id].i_cat = ASF_CODEC_TYPE_VIDEO;
}
else if( guidcmp( &stream_type, &asf_object_stream_type_audio ) )
{
hdr->stream[i_stream_id].i_cat = ASF_CODEC_TYPE_AUDIO;
}
else
{
hdr->stream[i_stream_id].i_cat = ASF_CODEC_TYPE_UNKNOWN;
}
}
else if ( guidcmp( &guid, &asf_object_stream_bitrate_properties ) )
{
int i_count;
uint8_t i_stream_id;
i_count = var_buffer_get16( &buffer );
i_size -= 2;
while( i_count > 0 )
{
i_stream_id = var_buffer_get16( &buffer )&0x7f;
hdr->stream[i_stream_id].i_bitrate = var_buffer_get32( &buffer );
i_count--;
i_size -= 6;
}
var_buffer_getmemory( &buffer, NULL, i_size - 24 );
}
else
{
// skip unknown guid
var_buffer_getmemory( &buffer, NULL, i_size - 24 );
}
if( var_buffer_readempty( &buffer ) )
return;
}
}
static efi_status_t EFIAPI efi_file_getinfo(struct efi_file_handle *file,
const efi_guid_t *info_type,
efi_uintn_t *buffer_size,
void *buffer)
{
struct file_handle *fh = to_fh(file);
efi_status_t ret = EFI_SUCCESS;
EFI_ENTRY("%p, %p, %p, %p", file, info_type, buffer_size, buffer);
if (!guidcmp(info_type, &efi_file_info_guid)) {
struct efi_file_info *info = buffer;
char *filename = basename(fh);
unsigned int required_size;
loff_t file_size;
/* check buffer size: */
required_size = sizeof(*info) + 2 * (strlen(filename) + 1);
if (*buffer_size < required_size) {
*buffer_size = required_size;
ret = EFI_BUFFER_TOO_SMALL;
goto error;
}
if (set_blk_dev(fh)) {
ret = EFI_DEVICE_ERROR;
goto error;
}
if (fs_size(fh->path, &file_size)) {
ret = EFI_DEVICE_ERROR;
goto error;
}
memset(info, 0, required_size);
info->size = required_size;
info->file_size = file_size;
info->physical_size = file_size;
if (fh->isdir)
info->attribute |= EFI_FILE_DIRECTORY;
ascii2unicode((u16 *)info->file_name, filename);
} else if (!guidcmp(info_type, &efi_file_system_info_guid)) {
struct efi_file_system_info *info = buffer;
disk_partition_t part;
efi_uintn_t required_size;
int r;
if (fh->fs->part >= 1)
r = part_get_info(fh->fs->desc, fh->fs->part, &part);
else
r = part_get_info_whole_disk(fh->fs->desc, &part);
if (r < 0) {
ret = EFI_DEVICE_ERROR;
goto error;
}
required_size = sizeof(info) + 2 *
(strlen((const char *)part.name) + 1);
if (*buffer_size < required_size) {
*buffer_size = required_size;
ret = EFI_BUFFER_TOO_SMALL;
goto error;
}
memset(info, 0, required_size);
info->size = required_size;
info->read_only = true;
info->volume_size = part.size * part.blksz;
info->free_space = 0;
info->block_size = part.blksz;
/*
* TODO: The volume label is not available in U-Boot.
* Use the partition name as substitute.
*/
ascii2unicode((u16 *)info->volume_label,
(const char *)part.name);
} else {
ret = EFI_UNSUPPORTED;
}
error:
return EFI_EXIT(ret);
}