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72c51a9e GSB |
1 | /* |
2 | * kmod-lsmod - list modules from linux kernel using libkmod. | |
3 | * | |
e6b0e49b | 4 | * Copyright (C) 2011-2013 ProFUSION embedded systems |
72c51a9e | 5 | * |
cb451f35 LDM |
6 | * This program is free software: you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 2 of the License, or | |
9 | * (at your option) any later version. | |
72c51a9e GSB |
10 | * |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
cb451f35 LDM |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. | |
72c51a9e | 15 | * |
cb451f35 LDM |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
72c51a9e | 18 | */ |
cb451f35 | 19 | |
72c51a9e GSB |
20 | #include <stdio.h> |
21 | #include <stdlib.h> | |
22 | #include <stddef.h> | |
23 | #include <errno.h> | |
24 | #include <unistd.h> | |
25 | #include <string.h> | |
26 | #include "libkmod.h" | |
27 | ||
4a2e20df | 28 | #include "kmod.h" |
72c51a9e | 29 | |
6fcf69e6 | 30 | static int do_lsmod(int argc, char *argv[]) |
72c51a9e GSB |
31 | { |
32 | struct kmod_ctx *ctx; | |
2411c077 | 33 | const char *null_config = NULL; |
72c51a9e GSB |
34 | struct kmod_list *list, *itr; |
35 | int err; | |
36 | ||
37 | if (argc != 1) { | |
38 | fprintf(stderr, "Usage: %s\n", argv[0]); | |
39 | return EXIT_FAILURE; | |
40 | } | |
41 | ||
2411c077 | 42 | ctx = kmod_new(NULL, &null_config); |
72c51a9e GSB |
43 | if (ctx == NULL) { |
44 | fputs("Error: kmod_new() failed!\n", stderr); | |
45 | return EXIT_FAILURE; | |
46 | } | |
47 | ||
a102e262 | 48 | err = kmod_module_new_from_loaded(ctx, &list); |
72c51a9e GSB |
49 | if (err < 0) { |
50 | fprintf(stderr, "Error: could not get list of modules: %s\n", | |
51 | strerror(-err)); | |
52 | kmod_unref(ctx); | |
53 | return EXIT_FAILURE; | |
54 | } | |
55 | ||
56 | puts("Module Size Used by"); | |
57 | ||
58 | kmod_list_foreach(itr, list) { | |
59 | struct kmod_module *mod = kmod_module_get_module(itr); | |
60 | const char *name = kmod_module_get_name(mod); | |
61 | int use_count = kmod_module_get_refcnt(mod); | |
62 | long size = kmod_module_get_size(mod); | |
63 | struct kmod_list *holders, *hitr; | |
64 | int first = 1; | |
65 | ||
66 | printf("%-19s %8ld %d ", name, size, use_count); | |
67 | holders = kmod_module_get_holders(mod); | |
68 | kmod_list_foreach(hitr, holders) { | |
69 | struct kmod_module *hm = kmod_module_get_module(hitr); | |
70 | ||
71 | if (!first) | |
72 | putchar(','); | |
73 | else | |
74 | first = 0; | |
75 | ||
76 | fputs(kmod_module_get_name(hm), stdout); | |
77 | kmod_module_unref(hm); | |
78 | } | |
79 | putchar('\n'); | |
80 | kmod_module_unref_list(holders); | |
81 | kmod_module_unref(mod); | |
82 | } | |
83 | kmod_module_unref_list(list); | |
84 | kmod_unref(ctx); | |
85 | ||
86 | return EXIT_SUCCESS; | |
87 | } | |
6fcf69e6 | 88 | |
6fcf69e6 LDM |
89 | const struct kmod_cmd kmod_cmd_compat_lsmod = { |
90 | .name = "lsmod", | |
91 | .cmd = do_lsmod, | |
92 | .help = "compat lsmod command", | |
93 | }; | |
94 | ||
252c51a9 LDM |
95 | const struct kmod_cmd kmod_cmd_list = { |
96 | .name = "list", | |
97 | .cmd = do_lsmod, | |
98 | .help = "list currently loaded modules", | |
99 | }; |