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Commit a3674307 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

fs_mgr: format f2fs with length=xx fstab 



Change-Id: Icce29ad918f20b16c9908e7fa3ae19eb8c96760b
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@google.com>
parent 477b08d7

fs_mgr/fs_mgr_format.cpp

+36 −8
Original line number Diff line number Diff line
@@ -34,23 +34,35 @@ 
#include "fs_mgr_priv.h"

#include "cryptfs.h"



static int format_ext4(char *fs_blkdev, char *fs_mnt_point, bool crypt_footer)

static int get_dev_sz(char *fs_blkdev, uint64_t *dev_sz)

{

    uint64_t dev_sz;

    int fd, rc = 0;

    int fd;



    if ((fd = open(fs_blkdev, O_WRONLY)) < 0) {

    if ((fd = open(fs_blkdev, O_RDONLY)) < 0) {

        PERROR << "Cannot open block device";

        return -1;

    }



    if ((ioctl(fd, BLKGETSIZE64, &dev_sz)) == -1) {

    if ((ioctl(fd, BLKGETSIZE64, dev_sz)) == -1) {

        PERROR << "Cannot get block device size";

        close(fd);

        return -1;

    }



    close(fd);

    return 0;

}



static int format_ext4(char *fs_blkdev, char *fs_mnt_point, bool crypt_footer)

{

    uint64_t dev_sz;

    int rc = 0;

    int status;



    rc = get_dev_sz(fs_blkdev, &dev_sz);

    if (rc) {

        return rc;

    }



    /* Format the partition using the calculated length */

    if (crypt_footer) {
@@ -85,9 +97,25 @@ static int format_ext4(char *fs_blkdev, char *fs_mnt_point, bool crypt_footer) 
    return rc;

}



static int format_f2fs(char *fs_blkdev)

static int format_f2fs(char *fs_blkdev, uint64_t dev_sz, bool crypt_footer)

{

    const char* const args[] = {"/system/bin/make_f2fs", "-f", "-O encrypt", fs_blkdev, nullptr};

    int status;



    if (!dev_sz) {

        int rc = get_dev_sz(fs_blkdev, &dev_sz);

        if (rc) {

            return rc;

        }

    }



    /* Format the partition using the calculated length */

    if (crypt_footer) {

        dev_sz -= CRYPT_FOOTER_OFFSET;

    }



    std::string size_str = std::to_string(dev_sz / 4096);

    const char* const args[] = {

        "/system/bin/make_f2fs", "-f", "-O", "encrypt", fs_blkdev, size_str.c_str(), nullptr};



    return android_fork_execvp_ext(arraysize(args), const_cast<char**>(args), NULL, true,

                                   LOG_KLOG, true, nullptr, nullptr, 0);
@@ -101,7 +129,7 @@ int fs_mgr_do_format(struct fstab_rec *fstab, bool crypt_footer) 
           << " as '" << fstab->fs_type << "'";



    if (!strncmp(fstab->fs_type, "f2fs", 4)) {

        rc = format_f2fs(fstab->blk_device);

        rc = format_f2fs(fstab->blk_device, fstab->length, crypt_footer);

    } else if (!strncmp(fstab->fs_type, "ext4", 4)) {

        rc = format_ext4(fstab->blk_device, fstab->mount_point, crypt_footer);

    } else {