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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "gpt.h"
#include "string-util.h"
#include "utf8.h"
/* Gently push people towards defining GPT type UUIDs for all architectures we know */
#if !defined(SD_GPT_ROOT_NATIVE) || \
!defined(SD_GPT_ROOT_NATIVE_VERITY) || \
!defined(SD_GPT_ROOT_NATIVE_VERITY_SIG) || \
!defined(SD_GPT_USR_NATIVE) || \
!defined(SD_GPT_USR_NATIVE_VERITY) || \
!defined(SD_GPT_USR_NATIVE_VERITY_SIG)
#pragma message "Please define GPT partition types for your architecture."
#endif
#define _GPT_ARCH_SEXTET(arch, name) \
{ SD_GPT_ROOT_##arch, "root-" name, ARCHITECTURE_##arch, .is_root = true }, \
{ SD_GPT_ROOT_##arch##_VERITY, "root-" name "-verity", ARCHITECTURE_##arch, .is_root_verity = true }, \
{ SD_GPT_ROOT_##arch##_VERITY_SIG, "root-" name "-verity-sig", ARCHITECTURE_##arch, .is_root_verity_sig = true }, \
{ SD_GPT_USR_##arch, "usr-" name, ARCHITECTURE_##arch, .is_usr = true }, \
{ SD_GPT_USR_##arch##_VERITY, "usr-" name "-verity", ARCHITECTURE_##arch, .is_usr_verity = true }, \
{ SD_GPT_USR_##arch##_VERITY_SIG, "usr-" name "-verity-sig", ARCHITECTURE_##arch, .is_usr_verity_sig = true }
const GptPartitionType gpt_partition_type_table[] = {
_GPT_ARCH_SEXTET(ALPHA, "alpha"),
_GPT_ARCH_SEXTET(ARC, "arc"),
_GPT_ARCH_SEXTET(ARM, "arm"),
_GPT_ARCH_SEXTET(ARM64, "arm64"),
_GPT_ARCH_SEXTET(IA64, "ia64"),
_GPT_ARCH_SEXTET(LOONGARCH64, "loongarch64"),
_GPT_ARCH_SEXTET(MIPS, "mips"),
_GPT_ARCH_SEXTET(MIPS64, "mips64"),
_GPT_ARCH_SEXTET(MIPS_LE, "mips-le"),
_GPT_ARCH_SEXTET(MIPS64_LE, "mips64-le"),
_GPT_ARCH_SEXTET(PARISC, "parisc"),
_GPT_ARCH_SEXTET(PPC, "ppc"),
_GPT_ARCH_SEXTET(PPC64, "ppc64"),
_GPT_ARCH_SEXTET(PPC64_LE, "ppc64-le"),
_GPT_ARCH_SEXTET(RISCV32, "riscv32"),
_GPT_ARCH_SEXTET(RISCV64, "riscv64"),
_GPT_ARCH_SEXTET(S390, "s390"),
_GPT_ARCH_SEXTET(S390X, "s390x"),
_GPT_ARCH_SEXTET(TILEGX, "tilegx"),
_GPT_ARCH_SEXTET(X86, "x86"),
_GPT_ARCH_SEXTET(X86_64, "x86-64"),
#ifdef SD_GPT_ROOT_NATIVE
{ SD_GPT_ROOT_NATIVE, "root", native_architecture(), .is_root = true },
{ SD_GPT_ROOT_NATIVE_VERITY, "root-verity", native_architecture(), .is_root_verity = true },
{ SD_GPT_ROOT_NATIVE_VERITY_SIG, "root-verity-sig", native_architecture(), .is_root_verity_sig = true },
{ SD_GPT_USR_NATIVE, "usr", native_architecture(), .is_usr = true },
{ SD_GPT_USR_NATIVE_VERITY, "usr-verity", native_architecture(), .is_usr_verity = true },
{ SD_GPT_USR_NATIVE_VERITY_SIG, "usr-verity-sig", native_architecture(), .is_usr_verity_sig = true },
#endif
#ifdef SD_GPT_ROOT_SECONDARY
_GPT_ARCH_SEXTET(SECONDARY, "secondary"),
#endif
{ SD_GPT_ESP, "esp", _ARCHITECTURE_INVALID },
{ SD_GPT_XBOOTLDR, "xbootldr", _ARCHITECTURE_INVALID },
{ SD_GPT_SWAP, "swap", _ARCHITECTURE_INVALID },
{ SD_GPT_HOME, "home", _ARCHITECTURE_INVALID },
{ SD_GPT_SRV, "srv", _ARCHITECTURE_INVALID },
{ SD_GPT_VAR, "var", _ARCHITECTURE_INVALID },
{ SD_GPT_TMP, "tmp", _ARCHITECTURE_INVALID },
{ SD_GPT_USER_HOME, "user-home", _ARCHITECTURE_INVALID },
{ SD_GPT_LINUX_GENERIC, "linux-generic", _ARCHITECTURE_INVALID },
{}
};
static const GptPartitionType *gpt_partition_type_find_by_uuid(sd_id128_t id) {
for (size_t i = 0; i < ELEMENTSOF(gpt_partition_type_table) - 1; i++)
if (sd_id128_equal(id, gpt_partition_type_table[i].uuid))
return gpt_partition_type_table + i;
return NULL;
}
const char *gpt_partition_type_uuid_to_string(sd_id128_t id) {
const GptPartitionType *pt;
pt = gpt_partition_type_find_by_uuid(id);
if (!pt)
return NULL;
return pt->name;
}
const char *gpt_partition_type_uuid_to_string_harder(
sd_id128_t id,
char buffer[static SD_ID128_UUID_STRING_MAX]) {
const char *s;
assert(buffer);
s = gpt_partition_type_uuid_to_string(id);
if (s)
return s;
return sd_id128_to_uuid_string(id, buffer);
}
int gpt_partition_type_uuid_from_string(const char *s, sd_id128_t *ret) {
assert(s);
for (size_t i = 0; i < ELEMENTSOF(gpt_partition_type_table) - 1; i++)
if (streq(s, gpt_partition_type_table[i].name)) {
if (ret)
*ret = gpt_partition_type_table[i].uuid;
return 0;
}
return sd_id128_from_string(s, ret);
}
Architecture gpt_partition_type_uuid_to_arch(sd_id128_t id) {
const GptPartitionType *pt;
pt = gpt_partition_type_find_by_uuid(id);
if (!pt)
return _ARCHITECTURE_INVALID;
return pt->arch;
}
int gpt_partition_label_valid(const char *s) {
_cleanup_free_ char16_t *recoded = NULL;
recoded = utf8_to_utf16(s, strlen(s));
if (!recoded)
return -ENOMEM;
return char16_strlen(recoded) <= GPT_LABEL_MAX;
}
static GptPartitionType gpt_partition_type_from_uuid(sd_id128_t id) {
const GptPartitionType *pt;
pt = gpt_partition_type_find_by_uuid(id);
if (pt)
return *pt;
return (GptPartitionType) { .uuid = id, .arch = _ARCHITECTURE_INVALID };
}
bool gpt_partition_type_is_root(sd_id128_t id) {
return gpt_partition_type_from_uuid(id).is_root;
}
bool gpt_partition_type_is_root_verity(sd_id128_t id) {
return gpt_partition_type_from_uuid(id).is_root_verity;
}
bool gpt_partition_type_is_root_verity_sig(sd_id128_t id) {
return gpt_partition_type_from_uuid(id).is_root_verity_sig;
}
bool gpt_partition_type_is_usr(sd_id128_t id) {
return gpt_partition_type_from_uuid(id).is_usr;
}
bool gpt_partition_type_is_usr_verity(sd_id128_t id) {
return gpt_partition_type_from_uuid(id).is_usr_verity;
}
bool gpt_partition_type_is_usr_verity_sig(sd_id128_t id) {
return gpt_partition_type_from_uuid(id).is_usr_verity_sig;
}
bool gpt_partition_type_knows_read_only(sd_id128_t id) {
return gpt_partition_type_is_root(id) ||
gpt_partition_type_is_usr(id) ||
sd_id128_in_set(id,
SD_GPT_HOME,
SD_GPT_SRV,
SD_GPT_VAR,
SD_GPT_TMP,
SD_GPT_XBOOTLDR) ||
gpt_partition_type_is_root_verity(id) || /* pretty much implied, but let's set the bit to make things really clear */
gpt_partition_type_is_usr_verity(id); /* ditto */
}
bool gpt_partition_type_knows_growfs(sd_id128_t id) {
return gpt_partition_type_is_root(id) ||
gpt_partition_type_is_usr(id) ||
sd_id128_in_set(id,
SD_GPT_HOME,
SD_GPT_SRV,
SD_GPT_VAR,
SD_GPT_TMP,
SD_GPT_XBOOTLDR);
}
bool gpt_partition_type_knows_no_auto(sd_id128_t id) {
return gpt_partition_type_is_root(id) ||
gpt_partition_type_is_root_verity(id) ||
gpt_partition_type_is_usr(id) ||
gpt_partition_type_is_usr_verity(id) ||
sd_id128_in_set(id,
SD_GPT_HOME,
SD_GPT_SRV,
SD_GPT_VAR,
SD_GPT_TMP,
SD_GPT_XBOOTLDR,
SD_GPT_SWAP);
}
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