ide/dlight.nativeexecution/tools/killall/src/macosx/pfind.c

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <strings.h>
#include "../pfind.h"

#define LINE_LEN 4048

pid_t* pfind(const char* magicenv) {
    FILE* fp;

    if ((fp = popen("/bin/ps -AEww", "r")) == NULL) {
        return NULL;
    }

    char env[strlen(magicenv) + 2];
    sprintf(env, " %s ", magicenv);

    pid_t *result = NULL;
    int res = 0, ressize = 0;
    char line[LINE_LEN];
    char* data;

    pid_t myself = getpid();

    while (fgets(line, LINE_LEN, fp) != 0) {
        line[strlen(line) - 1] = '\0';
        pid_t pid = (pid_t) strtol(line, &data, 0);
        if (pid <= 0 || pid == myself) {
            continue;
        }
        if (strstr(data, env) != 0) {
            if (res >= ressize) {
                ressize += 10;
                result = realloc(result, ressize * sizeof (pid_t));
            }
            result[res++] = pid;
        }
    }
    pclose(fp);

    if (res >= ressize) {
        ressize++;
        result = realloc(result, ressize * sizeof (pid_t));
    }
    result[res] = 0;

    return result;
}