jdk/src/solaris/back/exec_md.c
author dholmes
Thu, 04 Oct 2012 19:52:09 -0400
changeset 13956 1a25205d266e
parent 12047 320a714614e9
child 14342 8435a30053c1
permissions -rw-r--r--
7199186: runtime/7194254/Test7194254.java fails - wrong test name on @run Reviewed-by: kvn, twisti
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/*
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 * Copyright (c) 1998, 2005, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <ctype.h>
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#include "sys.h"
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#include "util.h"
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#if defined(LINUX) || defined(_ALLBSD_SOURCE)
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  /* Linux */
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  #define FORK() fork()
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#else
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  /* Solaris (make sure we always get the POSIX-specified behavior) */
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  #define FORK() fork1()
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#endif
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static char *skipWhitespace(char *p) {
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    while ((*p != '\0') && isspace(*p)) {
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        p++;
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    }
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    return p;
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}
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static char *skipNonWhitespace(char *p) {
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    while ((*p != '\0') && !isspace(*p)) {
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        p++;
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    }
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    return p;
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}
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int
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dbgsysExec(char *cmdLine)
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{
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    int i;
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    int argc;
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    pid_t pid_err = (pid_t)(-1); /* this is the error return value */
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    pid_t pid;
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    char **argv = NULL;
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    char *p;
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    char *args;
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    /* Skip leading whitespace */
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    cmdLine = skipWhitespace(cmdLine);
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    /*LINTED*/
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    args = jvmtiAllocate((jint)strlen(cmdLine)+1);
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    if (args == NULL) {
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        return SYS_NOMEM;
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    }
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    (void)strcpy(args, cmdLine);
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    p = args;
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    argc = 0;
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    while (*p != '\0') {
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        p = skipNonWhitespace(p);
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        argc++;
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        if (*p == '\0') {
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            break;
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        }
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        p = skipWhitespace(p);
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    }
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    /*LINTED*/
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    argv = jvmtiAllocate((argc + 1) * (jint)sizeof(char *));
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    if (argv == 0) {
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        jvmtiDeallocate(args);
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        return SYS_NOMEM;
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    }
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    for (i = 0, p = args; i < argc; i++) {
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        argv[i] = p;
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        p = skipNonWhitespace(p);
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        *p++ = '\0';
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        p = skipWhitespace(p);
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    }
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    argv[i] = NULL;  /* NULL terminate */
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    if ((pid = FORK()) == 0) {
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        /* Child process */
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        int i;
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        long max_fd;
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        /* close everything */
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        max_fd = sysconf(_SC_OPEN_MAX);
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        /*LINTED*/
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        for (i = 3; i < (int)max_fd; i++) {
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            (void)close(i);
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        }
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        (void)execvp(argv[0], argv);
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        exit(-1);
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    }
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    jvmtiDeallocate(args);
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    jvmtiDeallocate(argv);
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    if (pid == pid_err) {
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        return SYS_ERR;
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    } else {
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        return SYS_OK;
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    }
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}