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