/*-

 * Copyright (c) 2006 Verdens Gang AS

 * Copyright (c) 2006-2011 Varnish Software AS

 * All rights reserved.

 *

 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * Run stuff in a child process

 */

#include "config.h"

#include <stdio.h>

#include <stdint.h>

#include <stdlib.h>             // Solaris closefrom(3c)

#include <string.h>

#include <unistd.h>             // BSD/Linux close_range(2)

#ifndef HAVE_CLOSEFROM

#  include <dirent.h>

#endif

#include "vdef.h"

#include "vapi/vsig.h"

#include "vas.h"

#include "vfil.h"

#include "vlu.h"

#include "vsb.h"

#include "vsub.h"

struct vsub_priv {

        const char      *name;

        struct vsb      *sb;

        int             lines;

        int             maxlines;

};

void

{

#ifdef HAVE_CLOSEFROM

#else

#  ifdef HAVE_WORKING_CLOSE_RANGE

        if (close_range(fd, ~0U, 0) == 0)

                return;

#  endif

        char buf[128];

        int i;

        DIR *d;

        struct dirent *de;

        char *p;

        bprintf(buf, "/proc/%d/fd/", getpid());

        d = opendir(buf);

        if (d != NULL) {

                while (1) {

                        de = readdir(d);

                        if (de == NULL)

                                break;

                        i = strtoul(de->d_name, &p, 10);

                        if (*p != '\0' || i <= fd || i == dirfd(d))

                                continue;

                        (void)close(i);

                }

                AZ(closedir(d));

        } else {

                /* NB: Very slow if called with a high FD limit */

                i = sysconf(_SC_OPEN_MAX);

                assert(i > 0);

                for (; i > fd; i--)

                        (void)close(i);

        }

#endif

}

static int

{

        struct vsub_priv *sp;

}

/* returns an exit code */

unsigned

    int maxlines)

{

        int rv, p[2], status;

        pid_t pid;

        struct vsub_priv sp;

        }

        }

                /* Close all other fds */

                /*

                 * func should either exec or exit, so getting here should be

                 * treated like an assertion failure - except that we don't know

                 * if it's safe to trigger an actual assertion

                 */

        }

                }

        }