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shared/gpt: export gpt_partition_type_uuid_{to,from}_string functions

This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2020-01-23 22:55:48 +01:00
parent 5e176a4dee
commit 19ce38ce62
4 changed files with 83 additions and 70 deletions
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70
src/partition/repart.c
View File

@ -818,76 +818,6 @@ static void context_place_partitions(Context *context) {
}
}
typedef struct GptPartitionType {
sd_id128_t uuid;
const char *name;
} GptPartitionType;
static const GptPartitionType gpt_partition_type_table[] = {
{ GPT_ROOT_X86, "root-x86" },
{ GPT_ROOT_X86_VERITY, "root-x86-verity" },
{ GPT_ROOT_X86_64, "root-x86-64" },
{ GPT_ROOT_X86_64_VERITY, "root-x86-64-verity" },
{ GPT_ROOT_ARM, "root-arm" },
{ GPT_ROOT_ARM_VERITY, "root-arm-verity" },
{ GPT_ROOT_ARM_64, "root-arm64" },
{ GPT_ROOT_ARM_64_VERITY, "root-arm64-verity" },
{ GPT_ROOT_IA64, "root-ia64" },
{ GPT_ROOT_IA64_VERITY, "root-ia64-verity" },
#ifdef GPT_ROOT_NATIVE
{ GPT_ROOT_NATIVE, "root" },
{ GPT_ROOT_NATIVE_VERITY, "root-verity" },
#endif
#ifdef GPT_ROOT_SECONDARY
{ GPT_ROOT_SECONDARY, "root-secondary" },
{ GPT_ROOT_SECONDARY_VERITY, "root-secondary-verity" },
#endif
{ GPT_ESP, "esp" },
{ GPT_XBOOTLDR, "xbootldr" },
{ GPT_SWAP, "swap" },
{ GPT_HOME, "home" },
{ GPT_SRV, "srv" },
{ GPT_VAR, "var" },
{ GPT_TMP, "tmp" },
{ GPT_LINUX_GENERIC, "linux-generic", },
};
static const char *gpt_partition_type_uuid_to_string(sd_id128_t id) {
for (size_t i = 0; i < ELEMENTSOF(gpt_partition_type_table); i++)
if (sd_id128_equal(id, gpt_partition_type_table[i].uuid))
return gpt_partition_type_table[i].name;
return NULL;
}
static const char *gpt_partition_type_uuid_to_string_harder(
sd_id128_t id,
char buffer[static ID128_UUID_STRING_MAX]) {
const char *s;
assert(buffer);
s = gpt_partition_type_uuid_to_string(id);
if (s)
return s;
return id128_to_uuid_string(id, buffer);
}
static int gpt_partition_type_uuid_from_string(const char *s, sd_id128_t *ret) {
assert(s);
assert(ret);
for (size_t i = 0; i < ELEMENTSOF(gpt_partition_type_table); i++)
if (streq(s, gpt_partition_type_table[i].name)) {
*ret = gpt_partition_type_table[i].uuid;
return 0;
}
return sd_id128_from_string(s, ret);
}
static int config_parse_type(
const char *unit,
const char *filename,

74
src/shared/gpt.c Normal file
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@ -0,0 +1,74 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#include "gpt.h"
#include "string-util.h"
typedef struct GptPartitionType {
sd_id128_t uuid;
const char *name;
} GptPartitionType;
static const GptPartitionType gpt_partition_type_table[] = {
{ GPT_ROOT_X86, "root-x86" },
{ GPT_ROOT_X86_VERITY, "root-x86-verity" },
{ GPT_ROOT_X86_64, "root-x86-64" },
{ GPT_ROOT_X86_64_VERITY, "root-x86-64-verity" },
{ GPT_ROOT_ARM, "root-arm" },
{ GPT_ROOT_ARM_VERITY, "root-arm-verity" },
{ GPT_ROOT_ARM_64, "root-arm64" },
{ GPT_ROOT_ARM_64_VERITY, "root-arm64-verity" },
{ GPT_ROOT_IA64, "root-ia64" },
{ GPT_ROOT_IA64_VERITY, "root-ia64-verity" },
#ifdef GPT_ROOT_NATIVE
{ GPT_ROOT_NATIVE, "root" },
{ GPT_ROOT_NATIVE_VERITY, "root-verity" },
#endif
#ifdef GPT_ROOT_SECONDARY
{ GPT_ROOT_SECONDARY, "root-secondary" },
{ GPT_ROOT_SECONDARY_VERITY, "root-secondary-verity" },
#endif
{ GPT_ESP, "esp" },
{ GPT_XBOOTLDR, "xbootldr" },
{ GPT_SWAP, "swap" },
{ GPT_HOME, "home" },
{ GPT_SRV, "srv" },
{ GPT_VAR, "var" },
{ GPT_TMP, "tmp" },
{ GPT_LINUX_GENERIC, "linux-generic", },
};
const char *gpt_partition_type_uuid_to_string(sd_id128_t id) {
for (size_t i = 0; i < ELEMENTSOF(gpt_partition_type_table); i++)
if (sd_id128_equal(id, gpt_partition_type_table[i].uuid))
return gpt_partition_type_table[i].name;
return NULL;
}
const char *gpt_partition_type_uuid_to_string_harder(
sd_id128_t id,
char buffer[static ID128_UUID_STRING_MAX]) {
const char *s;
assert(buffer);
s = gpt_partition_type_uuid_to_string(id);
if (s)
return s;
return id128_to_uuid_string(id, buffer);
}
int gpt_partition_type_uuid_from_string(const char *s, sd_id128_t *ret) {
assert(s);
assert(ret);
for (size_t i = 0; i < ELEMENTSOF(gpt_partition_type_table); i++)
if (streq(s, gpt_partition_type_table[i].name)) {
*ret = gpt_partition_type_table[i].uuid;
return 0;
}
return sd_id128_from_string(s, ret);
}

8
src/shared/gpt.h
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@ -5,6 +5,8 @@
#include "sd-id128.h"
#include "id128-util.h"
/* We only support root disk discovery for x86, x86-64, Itanium and ARM for
* now, since EFI for anything else doesn't really exist, and we only
* care for root partitions on the same disk as the EFI ESP. */
@ -65,3 +67,9 @@
#define GPT_FLAG_NO_AUTO (1ULL << 63)
#define GPT_LINUX_GENERIC SD_ID128_MAKE(0f,c6,3d,af,84,83,47,72,8e,79,3d,69,d8,47,7d,e4)
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 ID128_UUID_STRING_MAX]);
int gpt_partition_type_uuid_from_string(const char *s, sd_id128_t *ret);

1
src/shared/meson.build
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@ -85,6 +85,7 @@ shared_sources = files('''
fstab-util.h
generator.c
generator.h
gpt.c
gpt.h
group-record-nss.c
group-record-nss.h