busybox

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

/*

 * Utility routines.

 *

 * Copyright 1998 by Albert Cahalan; all rights reserved.

 * Copyright (C) 2002 by Vladimir Oleynik <dzo@simtreas.ru>

 * GNU Library General Public License Version 2, or any later version

 *

 */

​

#include <dirent.h>

#include <string.h>

#include <stdlib.h>

#include <unistd.h>

#include <asm/page.h>

​

#include "libbb.h"

​

extern procps_status_t * procps_scan(int save_user_arg0)

{

    static DIR *dir;

    struct dirent *entry;

    static procps_status_t ret_status;

    char *name;

    int n;

    char status[32];

    char buf[1024];

    FILE *fp;

    procps_status_t curstatus;

    int pid;

    long tasknice;

    struct stat sb;

​

    if (!dir) {

        dir = opendir("/proc");

        if(!dir)

            bb_error_msg_and_die("Can't open /proc");

    }

    for(;;) {

        if((entry = readdir(dir)) == NULL) {

            closedir(dir);

            dir = 0;

            return 0;

        }

        name = entry->d_name;

        if (!(*name >= '0' && *name <= '9'))

            continue;

​

        memset(&curstatus, 0, sizeof(procps_status_t));

        pid = atoi(name);

        curstatus.pid = pid;

​

        sprintf(status, "/proc/%d", pid);

        if(stat(status, &sb))

            continue;

        my_getpwuid(curstatus.user, sb.st_uid, sizeof(curstatus.user));

​

        sprintf(status, "/proc/%d/stat", pid);

​

        if((fp = fopen(status, "r")) == NULL)

            continue;

        name = fgets(buf, sizeof(buf), fp);

        fclose(fp);