Examples with ErrnoException android.system.ErrnoException used on opensource projects

Example 46 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class UserManagerService method getSerialNumber.

/**
     * Return serial number stored in user directory inode.
     *
     * @return parsed serial number, or -1 if not set
     */
private static int getSerialNumber(File file) throws IOException {
    try {
        final byte[] buf = new byte[256];
        final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SERIAL, buf);
        final String serial = new String(buf, 0, len);
        try {
            return Integer.parseInt(serial);
        } catch (NumberFormatException e) {
            throw new IOException("Bad serial number: " + serial);
        }
    } catch (ErrnoException e) {
        if (e.errno == OsConstants.ENODATA) {
            return -1;
        } else {
            throw e.rethrowAsIOException();
        }
    }
}

Example 47 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class SELinuxPolicyInstallReceiver method applyUpdate.

private void applyUpdate() throws IOException, ErrnoException {
    Slog.i(TAG, "Applying SELinux policy");
    File backup = new File(updateDir.getParentFile(), "backup");
    File current = new File(updateDir.getParentFile(), "current");
    File tmp = new File(updateDir.getParentFile(), "tmp");
    if (current.exists()) {
        deleteRecursive(backup);
        Os.rename(current.getPath(), backup.getPath());
    }
    try {
        Os.rename(tmp.getPath(), current.getPath());
        SystemProperties.set("selinux.reload_policy", "1");
    } catch (ErrnoException e) {
        Slog.e(TAG, "Could not update selinux policy: ", e);
        if (backup.exists()) {
            Os.rename(backup.getPath(), current.getPath());
        }
    }
}

Example 48 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class ExifInterface method saveAttributes.

/**
     * Save the tag data into the original image file. This is expensive because it involves
     * copying all the data from one file to another and deleting the old file and renaming the
     * other. It's best to use {@link #setAttribute(String,String)} to set all attributes to write
     * and make a single call rather than multiple calls for each attribute.
     * <p>
     * This method is only supported for JPEG files.
     * </p>
     */
public void saveAttributes() throws IOException {
    if (!mIsSupportedFile || mIsRaw) {
        throw new IOException("ExifInterface only supports saving attributes on JPEG formats.");
    }
    if (mIsInputStream || (mSeekableFileDescriptor == null && mFilename == null)) {
        throw new IOException("ExifInterface does not support saving attributes for the current input.");
    }
    // Keep the thumbnail in memory
    mThumbnailBytes = getThumbnail();
    FileInputStream in = null;
    FileOutputStream out = null;
    File tempFile = null;
    try {
        // Move the original file to temporary file.
        if (mFilename != null) {
            tempFile = new File(mFilename + ".tmp");
            File originalFile = new File(mFilename);
            if (!originalFile.renameTo(tempFile)) {
                throw new IOException("Could'nt rename to " + tempFile.getAbsolutePath());
            }
        } else if (mSeekableFileDescriptor != null) {
            tempFile = File.createTempFile("temp", "jpg");
            Os.lseek(mSeekableFileDescriptor, 0, OsConstants.SEEK_SET);
            in = new FileInputStream(mSeekableFileDescriptor);
            out = new FileOutputStream(tempFile);
            Streams.copy(in, out);
        }
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    } finally {
        IoUtils.closeQuietly(in);
        IoUtils.closeQuietly(out);
    }
    in = null;
    out = null;
    try {
        // Save the new file.
        in = new FileInputStream(tempFile);
        if (mFilename != null) {
            out = new FileOutputStream(mFilename);
        } else if (mSeekableFileDescriptor != null) {
            Os.lseek(mSeekableFileDescriptor, 0, OsConstants.SEEK_SET);
            out = new FileOutputStream(mSeekableFileDescriptor);
        }
        saveJpegAttributes(in, out);
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    } finally {
        IoUtils.closeQuietly(in);
        IoUtils.closeQuietly(out);
        tempFile.delete();
    }
    // Discard the thumbnail in memory
    mThumbnailBytes = null;
}

Example 49 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class ExifInterfaceTest method testExifInterfaceCommon.

private void testExifInterfaceCommon(File imageFile, ExpectedValue expectedValue) throws IOException {
    String verboseTag = imageFile.getName();
    // Creates via path.
    ExifInterface exifInterface = new ExifInterface(imageFile.getAbsolutePath());
    compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
    // Creates from an asset file.
    InputStream in = null;
    try {
        in = mContext.getAssets().open(imageFile.getName());
        exifInterface = new ExifInterface(in);
        compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
    } finally {
        IoUtils.closeQuietly(in);
    }
    // Creates via InputStream.
    in = null;
    try {
        in = new BufferedInputStream(new FileInputStream(imageFile.getAbsolutePath()));
        exifInterface = new ExifInterface(in);
        compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
    } finally {
        IoUtils.closeQuietly(in);
    }
    // Creates via FileDescriptor.
    FileDescriptor fd = null;
    try {
        fd = Os.open(imageFile.getAbsolutePath(), OsConstants.O_RDONLY, 0600);
        exifInterface = new ExifInterface(fd);
        compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    } finally {
        IoUtils.closeQuietly(fd);
    }
}

Example 50 with ErrnoException

use of android.system.ErrnoException in project android_frameworks_base by ResurrectionRemix.

the class ExifInterfaceTest method testSaveAttributes_withFileDescriptor.

private void testSaveAttributes_withFileDescriptor(File imageFile, ExpectedValue expectedValue) throws IOException {
    String verboseTag = imageFile.getName();
    FileDescriptor fd = null;
    try {
        fd = Os.open(imageFile.getAbsolutePath(), OsConstants.O_RDWR, 0600);
        ExifInterface exifInterface = new ExifInterface(fd);
        exifInterface.saveAttributes();
        Os.lseek(fd, 0, OsConstants.SEEK_SET);
        exifInterface = new ExifInterface(fd);
        compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
        // Test for modifying one attribute.
        String backupValue = exifInterface.getAttribute(ExifInterface.TAG_MAKE);
        exifInterface.setAttribute(ExifInterface.TAG_MAKE, "abc");
        exifInterface.saveAttributes();
        Os.lseek(fd, 0, OsConstants.SEEK_SET);
        exifInterface = new ExifInterface(fd);
        assertEquals("abc", exifInterface.getAttribute(ExifInterface.TAG_MAKE));
        // Restore the backup value.
        exifInterface.setAttribute(ExifInterface.TAG_MAKE, backupValue);
        exifInterface.saveAttributes();
        Os.lseek(fd, 0, OsConstants.SEEK_SET);
        exifInterface = new ExifInterface(fd);
        compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    } finally {
        IoUtils.closeQuietly(fd);
    }
}