1 files changed, 102 insertions, 0 deletions
diff --git a/src/shared/gpt.h b/src/shared/gpt.h
new file mode 100644
index 0000000..21976e5
--- /dev/null
+++ b/src/shared/gpt.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <uchar.h>
+
+#include "sd-gpt.h"
+#include "sd-id128.h"
+
+#include "architecture.h"
+#include "id128-util.h"
+#include "sparse-endian.h"
+
+/* maximum length of gpt label */
+#define GPT_LABEL_MAX 36
+
+typedef enum PartitionDesignator {
+        PARTITION_ROOT, /* Primary architecture */
+        PARTITION_USR,
+        PARTITION_HOME,
+        PARTITION_SRV,
+        PARTITION_ESP,
+        PARTITION_XBOOTLDR,
+        PARTITION_SWAP,
+        PARTITION_ROOT_VERITY, /* verity data for the PARTITION_ROOT partition */
+        PARTITION_USR_VERITY,
+        PARTITION_ROOT_VERITY_SIG, /* PKCS#7 signature for root hash for the PARTITION_ROOT partition */
+        PARTITION_USR_VERITY_SIG,
+        PARTITION_TMP,
+        PARTITION_VAR,
+        _PARTITION_DESIGNATOR_MAX,
+        _PARTITION_DESIGNATOR_INVALID = -EINVAL,
+} PartitionDesignator;
+
+bool partition_designator_is_versioned(PartitionDesignator d);
+
+PartitionDesignator partition_verity_of(PartitionDesignator p);
+PartitionDesignator partition_verity_sig_of(PartitionDesignator p);
+PartitionDesignator partition_verity_to_data(PartitionDesignator d);
+PartitionDesignator partition_verity_sig_to_data(PartitionDesignator d);
+
+const char* partition_designator_to_string(PartitionDesignator d) _const_;
+PartitionDesignator partition_designator_from_string(const char *name) _pure_;
+
+const char *gpt_partition_type_uuid_to_string(sd_id128_t id);
+const char *gpt_partition_type_uuid_to_string_harder(
+                sd_id128_t id,
+                char buffer[static SD_ID128_UUID_STRING_MAX]);
+
+#define GPT_PARTITION_TYPE_UUID_TO_STRING_HARDER(id) \
+        gpt_partition_type_uuid_to_string_harder((id), (char[SD_ID128_UUID_STRING_MAX]) {})
+
+Architecture gpt_partition_type_uuid_to_arch(sd_id128_t id);
+
+typedef struct GptPartitionType {
+        sd_id128_t uuid;
+        const char *name;
+        Architecture arch;
+        PartitionDesignator designator;
+} GptPartitionType;
+
+extern const GptPartitionType gpt_partition_type_table[];
+
+int gpt_partition_label_valid(const char *s);
+
+GptPartitionType gpt_partition_type_from_uuid(sd_id128_t id);
+int gpt_partition_type_from_string(const char *s, GptPartitionType *ret);
+
+GptPartitionType gpt_partition_type_override_architecture(GptPartitionType type, Architecture arch);
+
+const char *gpt_partition_type_mountpoint_nulstr(GptPartitionType type);
+
+bool gpt_partition_type_knows_read_only(GptPartitionType type);
+bool gpt_partition_type_knows_growfs(GptPartitionType type);
+bool gpt_partition_type_knows_no_auto(GptPartitionType type);
+
+typedef struct {
+        uint8_t partition_type_guid[16];
+        uint8_t unique_partition_guid[16];
+        le64_t starting_lba;
+        le64_t ending_lba;
+        le64_t attributes;
+        char16_t partition_name[36];
+} _packed_ GptPartitionEntry;
+
+typedef struct {
+        char signature[8];
+        le32_t revision;
+        le32_t header_size;
+        le32_t crc32;
+        le32_t reserved;
+        le64_t my_lba;
+        le64_t alternate_lba;
+        le64_t first_usable_lba;
+        le64_t last_usable_lba;
+        uint8_t disk_guid[16];
+        le64_t partition_entry_lba;
+        le32_t number_of_partition_entries;
+        le32_t size_of_partition_entry;
+        le32_t partition_entry_array_crc32;
+} _packed_ GptHeader;
+
+bool gpt_header_has_signature(const GptHeader *p);