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Add android::fs_mgr namespace for new Fstab code

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Should have been done a while ago, but better late than never.

Test: treehugger
Change-Id: I0ea6e8d459cd3f3b3ce2d00a7a6a9786d52c52dd
This commit is contained in:
Tom Cherry 2019-01-30 13:25:35 -08:00
parent 083797adfd
commit a3530e6366
16 changed files with 197 additions and 191 deletions
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2
adb/daemon/remount_service.cpp
View file

@ -49,6 +49,8 @@
#include "set_verity_enable_state_service.h"
using android::base::Realpath;
using android::fs_mgr::Fstab;
using android::fs_mgr::ReadDefaultFstab;
// Returns the last device used to mount a directory in /proc/mounts.
// This will find overlayfs entry where upperdir=lowerdir, to make sure

4
adb/daemon/set_verity_enable_state_service.cpp
View file

@ -211,8 +211,8 @@ void set_verity_enabled_state_service(unique_fd fd, bool enable) {
// Not using AVB - assume VB1.0.
// read all fstab entries at once from all sources
Fstab fstab;
if (!ReadDefaultFstab(&fstab)) {
android::fs_mgr::Fstab fstab;
if (!android::fs_mgr::ReadDefaultFstab(&fstab)) {
WriteFdExactly(fd.get(), "Failed to read fstab\n");
suggest_run_adb_root(fd.get());
return;

16
fs_mgr/fs_mgr.cpp
View file

@ -90,9 +90,9 @@ using android::base::StartsWith;
using android::base::unique_fd;
using android::dm::DeviceMapper;
using android::dm::DmDeviceState;
using android::fs_mgr::AvbHandle;
using android::fs_mgr::AvbHashtreeResult;
using android::fs_mgr::AvbUniquePtr;
// Realistically, this file should be part of the android::fs_mgr namespace;
using namespace android::fs_mgr;
using namespace std::literals;
@ -1255,16 +1255,6 @@ int fs_mgr_do_mount_one(const FstabEntry& entry, const std::string& mount_point)
return ret;
}
int fs_mgr_do_mount_one(struct fstab_rec* rec) {
if (!rec) {
return FS_MGR_DOMNT_FAILED;
}
auto entry = FstabRecToFstabEntry(rec);
return fs_mgr_do_mount_one(entry);
}
// If tmp_mount_point is non-null, mount the filesystem there. This is for the
// tmp mount we do to check the user password
// If multiple fstab entries are to be mounted on "n_name", it will try to mount each one

9
fs_mgr/fs_mgr_format.cpp
View file

@ -37,6 +37,9 @@
using android::base::unique_fd;
// Realistically, this file should be part of the android::fs_mgr namespace;
using namespace android::fs_mgr;
static int get_dev_sz(const std::string& fs_blkdev, uint64_t* dev_sz) {
unique_fd fd(TEMP_FAILURE_RETRY(open(fs_blkdev.c_str(), O_RDONLY | O_CLOEXEC)));
@ -132,9 +135,3 @@ int fs_mgr_do_format(const FstabEntry& entry, bool crypt_footer) {
return -EINVAL;
}
}
int fs_mgr_do_format(struct fstab_rec* rec, bool crypt_footer) {
auto entry = FstabRecToFstabEntry(rec);
return fs_mgr_do_format(entry, crypt_footer);
}

287
fs_mgr/fs_mgr_fstab.cpp
View file

@ -41,14 +41,18 @@ using android::base::ParseInt;
using android::base::Split;
using android::base::StartsWith;
namespace android {
namespace fs_mgr {
namespace {
const std::string kDefaultAndroidDtDir("/proc/device-tree/firmware/android");
struct flag_list {
struct FlagList {
const char *name;
uint64_t flag;
};
static struct flag_list mount_flags_list[] = {
FlagList kMountFlagsList[] = {
{"noatime", MS_NOATIME},
{"noexec", MS_NOEXEC},
{"nosuid", MS_NOSUID},
@ -66,7 +70,7 @@ static struct flag_list mount_flags_list[] = {
{"defaults", 0},
};
static off64_t calculate_zram_size(int percentage) {
off64_t CalculateZramSize(int percentage) {
off64_t total;
total = sysconf(_SC_PHYS_PAGES);
@ -78,16 +82,12 @@ static off64_t calculate_zram_size(int percentage) {
return total;
}
/* fills 'dt_value' with the underlying device tree value string without
* the trailing '\0'. Returns true if 'dt_value' has a valid string, 'false'
* otherwise.
*/
static bool read_dt_file(const std::string& file_name, std::string* dt_value)
{
// Fills 'dt_value' with the underlying device tree value string without the trailing '\0'.
// Returns true if 'dt_value' has a valid string, 'false' otherwise.
bool ReadDtFile(const std::string& file_name, std::string* dt_value) {
if (android::base::ReadFileToString(file_name, dt_value)) {
if (!dt_value->empty()) {
// trim the trailing '\0' out, otherwise the comparison
// will produce false-negatives.
// Trim the trailing '\0' out, otherwise the comparison will produce false-negatives.
dt_value->resize(dt_value->size() - 1);
return true;
}
@ -96,19 +96,19 @@ static bool read_dt_file(const std::string& file_name, std::string* dt_value)
return false;
}
const static std::array<const char*, 3> kFileContentsEncryptionMode = {
const std::array<const char*, 3> kFileContentsEncryptionMode = {
"aes-256-xts",
"adiantum",
"ice",
};
const static std::array<const char*, 3> kFileNamesEncryptionMode = {
const std::array<const char*, 3> kFileNamesEncryptionMode = {
"aes-256-cts",
"aes-256-heh",
"adiantum",
};
static void ParseFileEncryption(const std::string& arg, FstabEntry* entry) {
void ParseFileEncryption(const std::string& arg, FstabEntry* entry) {
// The fileencryption flag is followed by an = and the mode of contents encryption, then
// optionally a and the mode of filenames encryption (defaults to aes-256-cts). Get it and
// return it.
@ -150,8 +150,8 @@ static void ParseFileEncryption(const std::string& arg, FstabEntry* entry) {
}
}
static bool SetMountFlag(const std::string& flag, FstabEntry* entry) {
for (const auto& [name, value] : mount_flags_list) {
bool SetMountFlag(const std::string& flag, FstabEntry* entry) {
for (const auto& [name, value] : kMountFlagsList) {
if (flag == name) {
entry->flags |= value;
return true;
@ -160,7 +160,7 @@ static bool SetMountFlag(const std::string& flag, FstabEntry* entry) {
return false;
}
static void ParseMountFlags(const std::string& flags, FstabEntry* entry) {
void ParseMountFlags(const std::string& flags, FstabEntry* entry) {
std::string fs_options;
for (const auto& flag : Split(flags, ",")) {
if (!SetMountFlag(flag, entry)) {
@ -174,7 +174,7 @@ static void ParseMountFlags(const std::string& flags, FstabEntry* entry) {
entry->fs_options = std::move(fs_options);
}
static void ParseFsMgrFlags(const std::string& flags, FstabEntry* entry) {
void ParseFsMgrFlags(const std::string& flags, FstabEntry* entry) {
entry->fs_mgr_flags.val = 0U;
for (const auto& flag : Split(flags, ",")) {
std::string arg;
@ -255,7 +255,7 @@ static void ParseFsMgrFlags(const std::string& flags, FstabEntry* entry) {
arg.pop_back();
int val;
if (ParseInt(arg, &val, 0, 100)) {
entry->zram_size = calculate_zram_size(val);
entry->zram_size = CalculateZramSize(val);
} else {
LWARNING << "Warning: zramsize= flag malformed: " << arg;
}
@ -346,7 +346,7 @@ static void ParseFsMgrFlags(const std::string& flags, FstabEntry* entry) {
}
}
static std::string init_android_dt_dir() {
std::string InitAndroidDtDir() {
std::string android_dt_dir;
// The platform may specify a custom Android DT path in kernel cmdline
if (!fs_mgr_get_boot_config_from_kernel_cmdline("android_dt_dir", &android_dt_dir)) {
@ -356,30 +356,23 @@ static std::string init_android_dt_dir() {
return android_dt_dir;
}
// FIXME: The same logic is duplicated in system/core/init/
const std::string& get_android_dt_dir() {
// Set once and saves time for subsequent calls to this function
static const std::string kAndroidDtDir = init_android_dt_dir();
return kAndroidDtDir;
}
static bool is_dt_fstab_compatible() {
bool IsDtFstabCompatible() {
std::string dt_value;
std::string file_name = get_android_dt_dir() + "/fstab/compatible";
if (read_dt_file(file_name, &dt_value) && dt_value == "android,fstab") {
if (ReadDtFile(file_name, &dt_value) && dt_value == "android,fstab") {
// If there's no status property or its set to "ok" or "okay", then we use the DT fstab.
std::string status_value;
std::string status_file_name = get_android_dt_dir() + "/fstab/status";
return !read_dt_file(status_file_name, &status_value) || status_value == "ok" ||
return !ReadDtFile(status_file_name, &status_value) || status_value == "ok" ||
status_value == "okay";
}
return false;
}
static std::string read_fstab_from_dt() {
if (!is_dt_compatible() || !is_dt_fstab_compatible()) {
std::string ReadFstabFromDt() {
if (!is_dt_compatible() || !IsDtFstabCompatible()) {
return {};
}
@ -400,7 +393,7 @@ static std::string read_fstab_from_dt() {
std::string value;
// skip a partition entry if the status property is present and not set to ok
file_name = android::base::StringPrintf("%s/%s/status", fstabdir_name.c_str(), dp->d_name);
if (read_dt_file(file_name, &value)) {
if (ReadDtFile(file_name, &value)) {
if (value != "okay" && value != "ok") {
LINFO << "dt_fstab: Skip disabled entry for partition " << dp->d_name;
continue;
@ -408,7 +401,7 @@ static std::string read_fstab_from_dt() {
}
file_name = android::base::StringPrintf("%s/%s/dev", fstabdir_name.c_str(), dp->d_name);
if (!read_dt_file(file_name, &value)) {
if (!ReadDtFile(file_name, &value)) {
LERROR << "dt_fstab: Failed to find device for partition " << dp->d_name;
return {};
}
@ -417,7 +410,7 @@ static std::string read_fstab_from_dt() {
std::string mount_point;
file_name =
android::base::StringPrintf("%s/%s/mnt_point", fstabdir_name.c_str(), dp->d_name);
if (read_dt_file(file_name, &value)) {
if (ReadDtFile(file_name, &value)) {
LINFO << "dt_fstab: Using a specified mount point " << value << " for " << dp->d_name;
mount_point = value;
} else {
@ -426,21 +419,21 @@ static std::string read_fstab_from_dt() {
fstab_entry.push_back(mount_point);
file_name = android::base::StringPrintf("%s/%s/type", fstabdir_name.c_str(), dp->d_name);
if (!read_dt_file(file_name, &value)) {
if (!ReadDtFile(file_name, &value)) {
LERROR << "dt_fstab: Failed to find type for partition " << dp->d_name;
return {};
}
fstab_entry.push_back(value);
file_name = android::base::StringPrintf("%s/%s/mnt_flags", fstabdir_name.c_str(), dp->d_name);
if (!read_dt_file(file_name, &value)) {
if (!ReadDtFile(file_name, &value)) {
LERROR << "dt_fstab: Failed to find type for partition " << dp->d_name;
return {};
}
fstab_entry.push_back(value);
file_name = android::base::StringPrintf("%s/%s/fsmgr_flags", fstabdir_name.c_str(), dp->d_name);
if (!read_dt_file(file_name, &value)) {
if (!ReadDtFile(file_name, &value)) {
LERROR << "dt_fstab: Failed to find type for partition " << dp->d_name;
return {};
}
@ -460,19 +453,26 @@ static std::string read_fstab_from_dt() {
return fstab_result;
}
bool is_dt_compatible() {
std::string file_name = get_android_dt_dir() + "/compatible";
std::string dt_value;
if (read_dt_file(file_name, &dt_value)) {
if (dt_value == "android,firmware") {
return true;
// Identify path to fstab file. Lookup is based on pattern fstab.<hardware>,
// fstab.<hardware.platform> in folders /odm/etc, vendor/etc, or /.
std::string GetFstabPath() {
for (const char* prop : {"hardware", "hardware.platform"}) {
std::string hw;
if (!fs_mgr_get_boot_config(prop, &hw)) continue;
for (const char* prefix : {"/odm/etc/fstab.", "/vendor/etc/fstab.", "/fstab."}) {
std::string fstab_path = prefix + hw;
if (access(fstab_path.c_str(), F_OK) == 0) {
return fstab_path;
}
}
}
return false;
return "";
}
static bool fs_mgr_read_fstab_file(FILE* fstab_file, bool proc_mounts, Fstab* fstab_out) {
bool ReadFstabFile(FILE* fstab_file, bool proc_mounts, Fstab* fstab_out) {
ssize_t len;
size_t alloc_len = 0;
char *line = NULL;
@ -568,7 +568,7 @@ err:
* /dev/block/pci/soc.0/f9824900.sdhci/by-name/vendor
* it returns a set { "soc/1da4000.ufshc", "soc.0/f9824900.sdhci" }.
*/
static std::set<std::string> extract_boot_devices(const Fstab& fstab) {
std::set<std::string> ExtraBootDevices(const Fstab& fstab) {
std::set<std::string> boot_devices;
for (const auto& entry : fstab) {
@ -601,13 +601,13 @@ static std::set<std::string> extract_boot_devices(const Fstab& fstab) {
return boot_devices;
}
static void EraseFstabEntry(Fstab* fstab, const std::string& mount_point) {
void EraseFstabEntry(Fstab* fstab, const std::string& mount_point) {
auto iter = std::remove_if(fstab->begin(), fstab->end(),
[&](const auto& entry) { return entry.mount_point == mount_point; });
fstab->erase(iter, fstab->end());
}
static void TransformFstabForGsi(Fstab* fstab) {
void TransformFstabForGsi(Fstab* fstab) {
EraseFstabEntry(fstab, "/system");
EraseFstabEntry(fstab, "/data");
@ -631,6 +631,8 @@ static void TransformFstabForGsi(Fstab* fstab) {
fstab->emplace_back(userdata);
}
} // namespace
bool ReadFstabFromFile(const std::string& path, Fstab* fstab) {
auto fstab_file = std::unique_ptr<FILE, decltype(&fclose)>{fopen(path.c_str(), "re"), fclose};
if (!fstab_file) {
@ -640,7 +642,7 @@ bool ReadFstabFromFile(const std::string& path, Fstab* fstab) {
bool is_proc_mounts = path == "/proc/mounts";
if (!fs_mgr_read_fstab_file(fstab_file.get(), is_proc_mounts, fstab)) {
if (!ReadFstabFile(fstab_file.get(), is_proc_mounts, fstab)) {
LERROR << __FUNCTION__ << "(): failed to load fstab from : '" << path << "'";
return false;
}
@ -651,18 +653,9 @@ bool ReadFstabFromFile(const std::string& path, Fstab* fstab) {
return true;
}
struct fstab* fs_mgr_read_fstab(const char* fstab_path) {
Fstab fstab;
if (!ReadFstabFromFile(fstab_path, &fstab)) {
return nullptr;
}
return FstabToLegacyFstab(fstab);
}
// Returns fstab entries parsed from the device tree if they exist
bool ReadFstabFromDt(Fstab* fstab, bool log) {
std::string fstab_buf = read_fstab_from_dt();
std::string fstab_buf = ReadFstabFromDt();
if (fstab_buf.empty()) {
if (log) LINFO << __FUNCTION__ << "(): failed to read fstab from dt";
return false;
@ -676,7 +669,7 @@ bool ReadFstabFromDt(Fstab* fstab, bool log) {
return false;
}
if (!fs_mgr_read_fstab_file(fstab_file.get(), false, fstab)) {
if (!ReadFstabFile(fstab_file.get(), false, fstab)) {
if (log) {
LERROR << __FUNCTION__ << "(): failed to load fstab from kernel:" << std::endl
<< fstab_buf;
@ -687,38 +680,6 @@ bool ReadFstabFromDt(Fstab* fstab, bool log) {
return true;
}
struct fstab* fs_mgr_read_fstab_dt() {
Fstab fstab;
if (!ReadFstabFromDt(&fstab)) {
return nullptr;
}
return FstabToLegacyFstab(fstab);
}
/*
* Identify path to fstab file. Lookup is based on pattern
* fstab.<hardware>, fstab.<hardware.platform> in folders
/odm/etc, vendor/etc, or /.
*/
static std::string get_fstab_path()
{
for (const char* prop : {"hardware", "hardware.platform"}) {
std::string hw;
if (!fs_mgr_get_boot_config(prop, &hw)) continue;
for (const char* prefix : {"/odm/etc/fstab.", "/vendor/etc/fstab.", "/fstab."}) {
std::string fstab_path = prefix + hw;
if (access(fstab_path.c_str(), F_OK) == 0) {
return fstab_path;
}
}
}
return std::string();
}
// Loads the fstab file and combines with fstab entries passed in from device tree.
bool ReadDefaultFstab(Fstab* fstab) {
Fstab dt_fstab;
@ -731,7 +692,7 @@ bool ReadDefaultFstab(Fstab* fstab) {
if (access("/system/bin/recovery", F_OK) == 0) {
default_fstab_path = "/etc/recovery.fstab";
} else { // normal boot
default_fstab_path = get_fstab_path();
default_fstab_path = GetFstabPath();
}
Fstab default_fstab;
@ -748,6 +709,92 @@ bool ReadDefaultFstab(Fstab* fstab) {
return !fstab->empty();
}
FstabEntry* GetEntryForMountPoint(Fstab* fstab, const std::string& path) {
if (fstab == nullptr) {
return nullptr;
}
for (auto& entry : *fstab) {
if (entry.mount_point == path) {
return &entry;
}
}
return nullptr;
}
std::set<std::string> GetBootDevices() {
// First check the kernel commandline, then try the device tree otherwise
std::string dt_file_name = get_android_dt_dir() + "/boot_devices";
std::string value;
if (fs_mgr_get_boot_config_from_kernel_cmdline("boot_devices", &value) ||
ReadDtFile(dt_file_name, &value)) {
auto boot_devices = Split(value, ",");
return std::set<std::string>(boot_devices.begin(), boot_devices.end());
}
// Fallback to extract boot devices from fstab.
Fstab fstab;
if (!ReadDefaultFstab(&fstab)) {
return {};
}
return ExtraBootDevices(fstab);
}
FstabEntry BuildGsiSystemFstabEntry() {
// .logical_partition_name is required to look up AVB Hashtree descriptors.
FstabEntry system = {.blk_device = "system_gsi",
.mount_point = "/system",
.fs_type = "ext4",
.flags = MS_RDONLY,
.fs_options = "barrier=1",
.avb_key = "/gsi.avbpubkey",
.logical_partition_name = "system"};
system.fs_mgr_flags.wait = true;
system.fs_mgr_flags.logical = true;
system.fs_mgr_flags.first_stage_mount = true;
return system;
}
} // namespace fs_mgr
} // namespace android
// FIXME: The same logic is duplicated in system/core/init/
const std::string& get_android_dt_dir() {
// Set once and saves time for subsequent calls to this function
static const std::string kAndroidDtDir = android::fs_mgr::InitAndroidDtDir();
return kAndroidDtDir;
}
bool is_dt_compatible() {
std::string file_name = get_android_dt_dir() + "/compatible";
std::string dt_value;
if (android::fs_mgr::ReadDtFile(file_name, &dt_value)) {
if (dt_value == "android,firmware") {
return true;
}
}
return false;
}
// Everything from here down is deprecated and will be removed shortly.
using android::fs_mgr::Fstab;
using android::fs_mgr::FstabEntry;
using android::fs_mgr::ReadDefaultFstab;
using android::fs_mgr::ReadFstabFromFile;
struct fstab* fs_mgr_read_fstab(const char* fstab_path) {
Fstab fstab;
if (!ReadFstabFromFile(fstab_path, &fstab)) {
return nullptr;
}
return FstabToLegacyFstab(fstab);
}
struct fstab* fs_mgr_read_fstab_default() {
Fstab fstab;
if (!ReadDefaultFstab(&fstab)) {
@ -789,8 +836,6 @@ void fs_mgr_free_fstab(struct fstab *fstab)
free(fstab);
}
// Returns the fstab_rec* whose mount_point is path.
// Returns nullptr if not found.
struct fstab_rec* fs_mgr_get_entry_for_mount_point(struct fstab* fstab, const std::string& path) {
if (!fstab) {
return nullptr;
@ -803,39 +848,6 @@ struct fstab_rec* fs_mgr_get_entry_for_mount_point(struct fstab* fstab, const st
return nullptr;
}
FstabEntry* GetEntryForMountPoint(Fstab* fstab, const std::string& path) {
if (fstab == nullptr) {
return nullptr;
}
for (auto& entry : *fstab) {
if (entry.mount_point == path) {
return &entry;
}
}
return nullptr;
}
std::set<std::string> fs_mgr_get_boot_devices() {
// First check the kernel commandline, then try the device tree otherwise
std::string dt_file_name = get_android_dt_dir() + "/boot_devices";
std::string value;
if (fs_mgr_get_boot_config_from_kernel_cmdline("boot_devices", &value) ||
read_dt_file(dt_file_name, &value)) {
auto boot_devices = Split(value, ",");
return std::set<std::string>(boot_devices.begin(), boot_devices.end());
}
// Fallback to extract boot devices from fstab.
Fstab fstab;
if (!ReadDefaultFstab(&fstab)) {
return {};
}
return extract_boot_devices(fstab);
}
FstabEntry FstabRecToFstabEntry(const fstab_rec* fstab_rec) {
FstabEntry entry;
entry.blk_device = fstab_rec->blk_device;
@ -977,20 +989,3 @@ int fs_mgr_is_checkpoint_fs(const struct fstab_rec* fstab) {
int fs_mgr_is_checkpoint_blk(const struct fstab_rec* fstab) {
return fstab->fs_mgr_flags & MF_CHECKPOINT_BLK;
}
FstabEntry BuildGsiSystemFstabEntry() {
// .logical_partition_name is required to look up AVB Hashtree descriptors.
FstabEntry system = {
.blk_device = "system_gsi",
.mount_point = "/system",
.fs_type = "ext4",
.flags = MS_RDONLY,
.fs_options = "barrier=1",
.avb_key = "/gsi.avbpubkey",
.logical_partition_name = "system"
};
system.fs_mgr_flags.wait = true;
system.fs_mgr_flags.logical = true;
system.fs_mgr_flags.first_stage_mount = true;
return system;
}

4
fs_mgr/fs_mgr_priv.h
View file

@ -143,10 +143,10 @@ bool fs_mgr_wait_for_file(const std::string& filename,
FileWaitMode wait_mode = FileWaitMode::Exists);
bool fs_mgr_set_blk_ro(const std::string& blockdev, bool readonly = true);
bool fs_mgr_update_for_slotselect(Fstab* fstab);
bool fs_mgr_update_for_slotselect(android::fs_mgr::Fstab* fstab);
bool fs_mgr_is_device_unlocked();
const std::string& get_android_dt_dir();
bool is_dt_compatible();
int load_verity_state(const FstabEntry& entry, int* mode);
int load_verity_state(const android::fs_mgr::FstabEntry& entry, int* mode);
#endif /* __CORE_FS_MGR_PRIV_H */

3
fs_mgr/fs_mgr_slotselect.cpp
View file

@ -21,6 +21,9 @@
#include "fs_mgr.h"
#include "fs_mgr_priv.h"
// Realistically, this file should be part of the android::fs_mgr namespace;
using namespace android::fs_mgr;
// https://source.android.com/devices/tech/ota/ab/ab_implement#partitions
// All partitions that are A/B-ed should be named as follows (slots are always
// named a, b, etc.): boot_a, boot_b, system_a, system_b, vendor_a, vendor_b.

3
fs_mgr/fs_mgr_verity.cpp
View file

@ -46,6 +46,9 @@
#include "fs_mgr.h"
#include "fs_mgr_priv.h"
// Realistically, this file should be part of the android::fs_mgr namespace;
using namespace android::fs_mgr;
#define VERITY_TABLE_RSA_KEY "/verity_key"
#define VERITY_TABLE_HASH_IDX 8
#define VERITY_TABLE_SALT_IDX 9

22
fs_mgr/include/fs_mgr.h
View file

@ -60,7 +60,7 @@ enum mount_mode {
#define FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE 0
#define FS_MGR_MNTALL_FAIL (-1)
// fs_mgr_mount_all() updates fstab entries that reference device-mapper.
int fs_mgr_mount_all(Fstab* fstab, int mount_mode);
int fs_mgr_mount_all(android::fs_mgr::Fstab* fstab, int mount_mode);
#define FS_MGR_DOMNT_FAILED (-1)
#define FS_MGR_DOMNT_BUSY (-2)
@ -68,28 +68,28 @@ int fs_mgr_mount_all(Fstab* fstab, int mount_mode);
int fs_mgr_do_mount(fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point);
int fs_mgr_do_mount(fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point,
bool needs_checkpoint);
int fs_mgr_do_mount(Fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point);
int fs_mgr_do_mount(Fstab* fstab, const char* n_name, char* n_blk_device, char* tmp_mount_point,
bool need_cp);
int fs_mgr_do_mount_one(const FstabEntry& entry, const std::string& mount_point = "");
int fs_mgr_do_mount_one(fstab_rec* rec);
int fs_mgr_do_mount(android::fs_mgr::Fstab* fstab, const char* n_name, char* n_blk_device,
char* tmp_mount_point);
int fs_mgr_do_mount(android::fs_mgr::Fstab* fstab, const char* n_name, char* n_blk_device,
char* tmp_mount_point, bool need_cp);
int fs_mgr_do_mount_one(const android::fs_mgr::FstabEntry& entry,
const std::string& mount_point = "");
int fs_mgr_do_tmpfs_mount(const char *n_name);
fstab_rec const* fs_mgr_get_crypt_entry(fstab const* fstab);
void fs_mgr_get_crypt_info(fstab* fstab, char* key_loc, char* real_blk_device, size_t size);
bool fs_mgr_load_verity_state(int* mode);
bool fs_mgr_update_verity_state(
std::function<void(const std::string& mount_point, int mode)> callback);
bool fs_mgr_swapon_all(const Fstab& fstab);
bool fs_mgr_update_logical_partition(FstabEntry* entry);
bool fs_mgr_swapon_all(const android::fs_mgr::Fstab& fstab);
bool fs_mgr_update_logical_partition(android::fs_mgr::FstabEntry* entry);
int fs_mgr_do_format(const FstabEntry& entry, bool reserve_footer);
int fs_mgr_do_format(fstab_rec* rec, bool reserve_footer);
int fs_mgr_do_format(const android::fs_mgr::FstabEntry& entry, bool reserve_footer);
#define FS_MGR_SETUP_VERITY_SKIPPED (-3)
#define FS_MGR_SETUP_VERITY_DISABLED (-2)
#define FS_MGR_SETUP_VERITY_FAIL (-1)
#define FS_MGR_SETUP_VERITY_SUCCESS 0
int fs_mgr_setup_verity(FstabEntry* fstab, bool wait_for_verity_dev);
int fs_mgr_setup_verity(android::fs_mgr::FstabEntry* fstab, bool wait_for_verity_dev);
// Return the name of the super partition if it exists. If a slot number is
// specified, the super partition for the corresponding metadata slot will be

4
fs_mgr/include/fs_mgr_overlayfs.h
View file

@ -21,8 +21,8 @@
#include <string>
#include <vector>
bool fs_mgr_overlayfs_mount_all(Fstab* fstab);
std::vector<std::string> fs_mgr_overlayfs_required_devices(Fstab* fstab);
bool fs_mgr_overlayfs_mount_all(android::fs_mgr::Fstab* fstab);
std::vector<std::string> fs_mgr_overlayfs_required_devices(android::fs_mgr::Fstab* fstab);
bool fs_mgr_overlayfs_setup(const char* backing = nullptr, const char* mount_point = nullptr,
bool* change = nullptr);
bool fs_mgr_overlayfs_teardown(const char* mount_point = nullptr, bool* change = nullptr);

20
fs_mgr/include_fstab/fstab/fstab.h
View file

@ -65,7 +65,6 @@ struct fstab_rec {
};
struct fstab* fs_mgr_read_fstab_default();
struct fstab* fs_mgr_read_fstab_dt();
struct fstab* fs_mgr_read_fstab(const char* fstab_path);
void fs_mgr_free_fstab(struct fstab* fstab);
@ -88,7 +87,9 @@ int fs_mgr_has_sysfs_path(const struct fstab_rec* fstab);
std::string fs_mgr_get_slot_suffix();
std::string fs_mgr_get_other_slot_suffix();
std::set<std::string> fs_mgr_get_boot_devices();
namespace android {
namespace fs_mgr {
struct FstabEntry {
std::string blk_device;
@ -187,10 +188,15 @@ bool ReadDefaultFstab(Fstab* fstab);
FstabEntry* GetEntryForMountPoint(Fstab* fstab, const std::string& path);
// Temporary conversion functions.
FstabEntry FstabRecToFstabEntry(const fstab_rec* fstab_rec);
Fstab LegacyFstabToFstab(const struct fstab* legacy_fstab);
fstab* FstabToLegacyFstab(const Fstab& fstab);
// Helper method to build a GSI fstab entry for mounting /system.
FstabEntry BuildGsiSystemFstabEntry();
std::set<std::string> GetBootDevices();
} // namespace fs_mgr
} // namespace android
// Temporary conversion functions.
android::fs_mgr::FstabEntry FstabRecToFstabEntry(const fstab_rec* fstab_rec);
android::fs_mgr::Fstab LegacyFstabToFstab(const struct fstab* legacy_fstab);
fstab* FstabToLegacyFstab(const android::fs_mgr::Fstab& fstab);

1
fs_mgr/libfs_avb/tests/avb_util_test.cpp
View file

@ -28,6 +28,7 @@
// Target classes or functions to test:
using android::fs_mgr::AvbPartitionToDevicePatition;
using android::fs_mgr::DeriveAvbPartitionName;
using android::fs_mgr::FstabEntry;
using android::fs_mgr::GetAvbFooter;
using android::fs_mgr::GetChainPartitionInfo;
using android::fs_mgr::GetTotalSize;

2
fs_mgr/tests/fs_mgr_test.cpp
View file

@ -32,6 +32,8 @@
#include "../fs_mgr_priv_boot_config.h"
using namespace android::fs_mgr;
namespace {
const std::string cmdline =

2
init/builtins.cpp
View file

@ -75,6 +75,8 @@
using namespace std::literals::string_literals;
using android::base::unique_fd;
using android::fs_mgr::Fstab;
using android::fs_mgr::ReadFstabFromFile;
#define chmod DO_NOT_USE_CHMOD_USE_FCHMODAT_SYMLINK_NOFOLLOW

7
init/first_stage_mount.cpp
View file

@ -49,6 +49,11 @@ using android::base::Timer;
using android::fs_mgr::AvbHandle;
using android::fs_mgr::AvbHashtreeResult;
using android::fs_mgr::AvbUniquePtr;
using android::fs_mgr::BuildGsiSystemFstabEntry;
using android::fs_mgr::Fstab;
using android::fs_mgr::FstabEntry;
using android::fs_mgr::ReadDefaultFstab;
using android::fs_mgr::ReadFstabFromDt;
using namespace std::literals;
@ -160,7 +165,7 @@ static Fstab ReadFirstStageFstab() {
// -----------------
FirstStageMount::FirstStageMount(Fstab fstab)
: need_dm_verity_(false), fstab_(std::move(fstab)), uevent_listener_(16 * 1024 * 1024) {
auto boot_devices = fs_mgr_get_boot_devices();
auto boot_devices = android::fs_mgr::GetBootDevices();
device_handler_ = std::make_unique<DeviceHandler>(
std::vector<Permissions>{}, std::vector<SysfsPermissions>{}, std::vector<Subsystem>{},
std::move(boot_devices), false);

2
init/ueventd.cpp
View file

@ -245,7 +245,7 @@ int ueventd_main(int argc, char** argv) {
uevent_handlers.emplace_back(std::make_unique<DeviceHandler>(
std::move(ueventd_configuration.dev_permissions),
std::move(ueventd_configuration.sysfs_permissions),
std::move(ueventd_configuration.subsystems), fs_mgr_get_boot_devices(), true));
std::move(ueventd_configuration.subsystems), android::fs_mgr::GetBootDevices(), true));
uevent_handlers.emplace_back(std::make_unique<FirmwareHandler>(
std::move(ueventd_configuration.firmware_directories)));