core/org.eclipse.cdt.core.native/native_src/unix/pty.c

/*******************************************************************************
 * Copyright (c) 2002, 2010 QNX Software Systems and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     QNX Software Systems - initial API and implementation
 *     Wind River Systems, Inc.
 *******************************************************************************/
#include <sys/ioctl.h>
#include "org_eclipse_cdt_utils_pty_PTY.h"
#include "openpty.h"

/*
 * Class:     org_eclipse_cdt_utils_pty_PTY
 * Method:    forkpty
 * Signature: ()I
 */
JNIEXPORT jstring JNICALL Java_org_eclipse_cdt_utils_pty_PTY_openMaster(JNIEnv *env, jobject jobj, jboolean console) {
    jfieldID fid; /* Store the field ID */
    jstring jstr = NULL;
    int master = -1;
    char line[1024]; /* FIXME: Should be enough */
    jclass cls;

    line[0] = '\0';

    master = ptym_open(line);
    if (master >= 0) {
        // turn off echo
        if (console) {
            set_noecho(master);
        }

        /* Get a reference to the obj's class */
        cls = (*env)->GetObjectClass(env, jobj);

        /* Set the master fd.  */
        fid = (*env)->GetFieldID(env, cls, "master", "I");
        if (fid == NULL) {
            return NULL;
        }
        (*env)->SetIntField(env, jobj, fid, (jint)master);

        /* Create a new String for the slave.  */
        jstr = (*env)->NewStringUTF(env, line);
    }
    return jstr;
}

JNIEXPORT jint JNICALL Java_org_eclipse_cdt_utils_pty_PTY_change_1window_1size(JNIEnv *env, jobject jobj, jint fdm,
                                                                               jint width, jint height) {
#ifdef TIOCSWINSZ
    struct winsize win;

    win.ws_col = width;
    win.ws_row = height;
    win.ws_xpixel = 0;
    win.ws_ypixel = 0;

    return ioctl(fdm, TIOCSWINSZ, &win);
#else
#error no TIOCSWINSZ
    return 0;
#endif
}