LXR toybox/toys/other/lsmod.c

   1/* lsmod.c - Show the status of modules in the kernel
   2 *
   3 * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
   4
   5USE_LSMOD(NEWTOY(lsmod, NULL, TOYFLAG_SBIN))
   6
   7config LSMOD
   8  bool "lsmod"
   9  default y
  10  help
  11    usage: lsmod
  12
  13    Display the currently loaded modules, their sizes and their dependencies.
  14*/
  15
  16#include "toys.h"
  17
  18void lsmod_main(void)
  19{
  20  char *modfile = "/proc/modules";
  21  FILE * file = xfopen(modfile, "r");
  22
  23  xprintf("%-23s Size  Used by\n", "Module");
  24
  25  while (fgets(toybuf, sizeof(toybuf), file)) {
  26    char *name = strtok(toybuf, " "), *size = strtok(NULL, " "),
  27         *refcnt = strtok(NULL, " "), *users = strtok(NULL, " ");
  28
  29    if(users) {
  30      int len = strlen(users)-1;
  31      if (users[len] == ',' || users[len] == '-') users[len] = 0;
  32      xprintf("%-19s %8s  %s %s\n", name, size, refcnt, users);
  33    } else perror_exit("bad %s", modfile);
  34  }
  35  fclose(file);
  36}
  37