busybox

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

/*

 * Mini start-stop-daemon implementation(s) for busybox

 *

 * Written by Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl>,

 * public domain.

 * Adapted for busybox David Kimdon <dwhedon@gordian.com>

 */

​

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <stdarg.h>

#include <signal.h>

#include <errno.h>

#include <sys/stat.h>

#include <dirent.h>

#include <unistd.h>

#include <getopt.h>

​

#include "busybox.h"

#include "pwd_.h"

​

static int signal_nr = 15;

static int user_id = -1;

static int quiet = 0;

static char *userspec = NULL;

static char *cmdname = NULL;

static char *execname = NULL;

static char *pidfile = NULL;

​

struct pid_list {

    struct pid_list *next;

    pid_t pid;

};

​

static struct pid_list *found = NULL;

​

static inline void

push(pid_t pid)

{

    struct pid_list *p;

​

    p = xmalloc(sizeof(*p));

    p->next = found;

    p->pid = pid;

    found = p;

}

​

static int

pid_is_exec(pid_t pid, const char *name)

{

    char buf[32];

    struct stat sb, exec_stat;

​

    if (name && stat(name, &exec_stat))

        bb_perror_msg_and_die("stat %s", name);

​

    sprintf(buf, "/proc/%d/exe", pid);

    if (stat(buf, &sb) != 0)

        return 0;

    return (sb.st_dev == exec_stat.st_dev && sb.st_ino == exec_stat.st_ino);

}