static int check_module_inuse(struct kmod_module *mod) { struct kmod_list *holders; if (kmod_module_get_initstate(mod) == -ENOENT) { ERR("Module %s is not currently loaded\n", kmod_module_get_name(mod)); return -ENOENT; } holders = kmod_module_get_holders(mod); if (holders != NULL) { struct kmod_list *itr; ERR("Module %s is in use by:", kmod_module_get_name(mod)); kmod_list_foreach(itr, holders) { struct kmod_module *hm = kmod_module_get_module(itr); fprintf(stderr, " %s", kmod_module_get_name(hm)); kmod_module_unref(hm); } fputc('\n', stderr); kmod_module_unref_list(holders); return -EBUSY; } if (kmod_module_get_refcnt(mod) != 0) { ERR("Module %s is in use\n", kmod_module_get_name(mod)); return -EBUSY; } return 0; }
static int do_lsmod(int argc, char *argv[]) { struct kmod_ctx *ctx; const char *null_config = NULL; struct kmod_list *list, *itr; int err; if (argc != 1) { fprintf(stderr, "Usage: %s\n", argv[0]); return EXIT_FAILURE; } ctx = kmod_new(NULL, &null_config); if (ctx == NULL) { fputs("Error: kmod_new() failed!\n", stderr); return EXIT_FAILURE; } err = kmod_module_new_from_loaded(ctx, &list); if (err < 0) { fprintf(stderr, "Error: could not get list of modules: %s\n", strerror(-err)); kmod_unref(ctx); return EXIT_FAILURE; } puts("Module Size Used by"); kmod_list_foreach(itr, list) { struct kmod_module *mod = kmod_module_get_module(itr); const char *name = kmod_module_get_name(mod); int use_count = kmod_module_get_refcnt(mod); long size = kmod_module_get_size(mod); struct kmod_list *holders, *hitr; int first = 1; printf("%-19s %8ld %d ", name, size, use_count); holders = kmod_module_get_holders(mod); kmod_list_foreach(hitr, holders) { struct kmod_module *hm = kmod_module_get_module(hitr); if (!first) putchar(','); else first = 0; fputs(kmod_module_get_name(hm), stdout); kmod_module_unref(hm); } putchar('\n'); kmod_module_unref_list(holders); kmod_module_unref(mod); } kmod_module_unref_list(list); kmod_unref(ctx); return EXIT_SUCCESS; }
static int loaded_1(const struct test *t) { struct kmod_ctx *ctx; const char *null_config = NULL; struct kmod_list *list, *itr; int err; ctx = kmod_new(NULL, &null_config); if (ctx == NULL) exit(EXIT_FAILURE); err = kmod_module_new_from_loaded(ctx, &list); if (err < 0) { fprintf(stderr, "%s\n", strerror(-err)); kmod_unref(ctx); exit(EXIT_FAILURE); } printf("Module Size Used by\n"); kmod_list_foreach(itr, list) { struct kmod_module *mod = kmod_module_get_module(itr); const char *name = kmod_module_get_name(mod); int use_count = kmod_module_get_refcnt(mod); long size = kmod_module_get_size(mod); struct kmod_list *holders, *hitr; int first = 1; printf("%-19s %8ld %d ", name, size, use_count); holders = kmod_module_get_holders(mod); kmod_list_foreach(hitr, holders) { struct kmod_module *hm = kmod_module_get_module(hitr); if (!first) putchar(','); else first = 0; fputs(kmod_module_get_name(hm), stdout); kmod_module_unref(hm); } putchar('\n'); kmod_module_unref_list(holders); kmod_module_unref(mod); } kmod_module_unref_list(list); kmod_unref(ctx); return EXIT_SUCCESS; }
static int check_module_inuse(struct kmod_module *mod) { struct kmod_list *holders; int state, ret; state = kmod_module_get_initstate(mod); if (state == KMOD_MODULE_BUILTIN) { ERR("Module %s is builtin.\n", kmod_module_get_name(mod)); return -ENOENT; } else if (state < 0) { ERR("Module %s is not currently loaded\n", kmod_module_get_name(mod)); return -ENOENT; } holders = kmod_module_get_holders(mod); if (holders != NULL) { struct kmod_list *itr; ERR("Module %s is in use by:", kmod_module_get_name(mod)); kmod_list_foreach(itr, holders) { struct kmod_module *hm = kmod_module_get_module(itr); fprintf(stderr, " %s", kmod_module_get_name(hm)); kmod_module_unref(hm); } fputc('\n', stderr); kmod_module_unref_list(holders); return -EBUSY; } ret = kmod_module_get_refcnt(mod); if (ret > 0) { ERR("Module %s is in use\n", kmod_module_get_name(mod)); return -EBUSY; } else if (ret == -ENOENT) { ERR("Module unloading is not supported\n"); } return ret; }
static int rmmod_do_module(struct kmod_module *mod, bool do_dependencies) { const char *modname = kmod_module_get_name(mod); struct kmod_list *pre = NULL, *post = NULL; const char *cmd = NULL; int err; if (!ignore_commands) { err = kmod_module_get_softdeps(mod, &pre, &post); if (err < 0) { WRN("could not get softdeps of '%s': %s\n", modname, strerror(-err)); return err; } cmd = kmod_module_get_remove_commands(mod); } if (cmd == NULL && !ignore_loaded) { int state = kmod_module_get_initstate(mod); if (state < 0) { LOG ("Module %s not found.\n", modname); err = -ENOENT; goto error; } else if (state == KMOD_MODULE_BUILTIN) { LOG("Module %s is builtin.\n", modname); err = -ENOENT; goto error; } else if (state != KMOD_MODULE_LIVE) { if (first_time) { LOG("Module %s is not in kernel.\n", modname); err = -ENOENT; goto error; } else { err = 0; goto error; } } } rmmod_do_deps_list(post, false); if (do_dependencies && remove_dependencies) { struct kmod_list *deps = kmod_module_get_dependencies(mod); err = rmmod_do_deps_list(deps, true); if (err < 0) goto error; } if (!ignore_loaded) { int usage = kmod_module_get_refcnt(mod); if (usage > 0) { if (!quiet_inuse) LOG("Module %s is in use.\n", modname); err = -EBUSY; goto error; } } if (cmd == NULL) err = rmmod_do_remove_module(mod); else err = command_do(mod, "remove", cmd, NULL); if (err < 0) goto error; rmmod_do_deps_list(pre, false); error: kmod_module_unref_list(pre); kmod_module_unref_list(post); return err; }