busybox

/* vi: set sw=4 ts=4: */

/*

 * Mini ps implementation(s) for busybox

 *

 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>

 *

 * Licensed under the GPL v2, see the file LICENSE in this tarball.

 */

​

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <dirent.h>

#include <errno.h>

#include <fcntl.h>

#include <ctype.h>

#include <string.h>

#include <termios.h>

#include <sys/ioctl.h>

#include "busybox.h"

#if ENABLE_SELINUX

#include <selinux/selinux.h>  /* for is_selinux_enabled()  */

#endif

​

int ps_main(int argc, char **argv)

{

    procps_status_t * p;

    int i, len;

​

#if ENABLE_SELINUX

    int use_selinux = 0;

    security_context_t sid=NULL;

#endif

​

#if ENABLE_FEATURE_PS_WIDE

    int terminal_width;

    int w_count = 0;

​

    bb_opt_complementally="-:ww";

#else

# define terminal_width 79

#endif

​

#if ENABLE_FEATURE_PS_WIDE || ENABLE_SELINUX

    /* handle arguments */

#if ENABLE_FEATURE_PS_WIDE && ENABLE_SELINUX

    i = bb_getopt_ulflags(argc, argv, "wc", &w_count);

#elif ENABLE_FEATURE_PS_WIDE && !ENABLE_SELINUX

    bb_getopt_ulflags(argc, argv, "w", &w_count);

#else /* !ENABLE_FEATURE_PS_WIDE && ENABLE_SELINUX */

    i = bb_getopt_ulflags(argc, argv, "c");

#endif

#if ENABLE_FEATURE_PS_WIDE

    /* if w is given once, GNU ps sets the width to 132,

     * if w is given more than once, it is "unlimited"

     */

    if(w_count) {

        terminal_width = (w_count==1) ? 132 : INT_MAX;

    } else {

        get_terminal_width_height(1, &terminal_width, NULL);

        /* Go one less... */

        terminal_width--;

    }