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Commit 3e595d5e authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

Shutdown f2fs to avoid fsck 



Bug: 229406072
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@google.com>
Change-Id: Id3b27219ab2a4655f1740829b0f03f027e66349d
parent 54119052

init/reboot.cpp

+14 −3
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 


#include <dirent.h>

#include <fcntl.h>

#include <linux/f2fs.h>

#include <linux/fs.h>

#include <linux/loop.h>

#include <mntent.h>
@@ -218,7 +219,7 @@ static void LogShutdownTime(UmountStat stat, Timer* t) { 
                 << stat;

}



static bool IsDataMounted() {

static bool IsDataMounted(const std::string& fstype) {

    std::unique_ptr<std::FILE, int (*)(std::FILE*)> fp(setmntent("/proc/mounts", "re"), endmntent);

    if (fp == nullptr) {

        PLOG(ERROR) << "Failed to open /proc/mounts";
@@ -227,7 +228,7 @@ static bool IsDataMounted() { 
    mntent* mentry;

    while ((mentry = getmntent(fp.get())) != nullptr) {

        if (mentry->mnt_dir == "/data"s) {

            return true;

            return fstype == "*" || mentry->mnt_type == fstype;

        }

    }

    return false;
@@ -633,7 +634,7 @@ static void DoReboot(unsigned int cmd, const std::string& reason, const std::str 


    // If /data isn't mounted then we can skip the extra reboot steps below, since we don't need to

    // worry about unmounting it.

    if (!IsDataMounted()) {

    if (!IsDataMounted("*")) {

        sync();

        RebootSystem(cmd, reboot_target);

        abort();
@@ -758,6 +759,16 @@ static void DoReboot(unsigned int cmd, const std::string& reason, const std::str 
    sem_post(&reboot_semaphore);



    // Reboot regardless of umount status. If umount fails, fsck after reboot will fix it.

    if (IsDataMounted("f2fs")) {

        uint32_t flag = F2FS_GOING_DOWN_FULLSYNC;

        unique_fd fd(TEMP_FAILURE_RETRY(open("/data", O_RDONLY)));

        int ret = ioctl(fd, F2FS_IOC_SHUTDOWN, &flag);

        if (ret) {

            PLOG(ERROR) << "Shutdown /data: ";

        } else {

            LOG(INFO) << "Shutdown /data";

        }

    }

    RebootSystem(cmd, reboot_target);

    abort();

}