From patchwork Fri Nov 8 17:25:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Gladkov X-Patchwork-Id: 11235309 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4FDDB1986 for ; Fri, 8 Nov 2019 17:25:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2E6132084D for ; Fri, 8 Nov 2019 17:25:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728892AbfKHRZp convert rfc822-to-8bit (ORCPT ); Fri, 8 Nov 2019 12:25:45 -0500 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:35479 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728714AbfKHRZp (ORCPT ); Fri, 8 Nov 2019 12:25:45 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-7-OrwgZTBzMcq2utvwMpbrXA-1; Fri, 08 Nov 2019 12:25:40 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4314C477; Fri, 8 Nov 2019 17:25:39 +0000 (UTC) Received: from localhost.localdomain (unknown [10.43.2.27]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9999C1001281; Fri, 8 Nov 2019 17:25:38 +0000 (UTC) From: Alexey Gladkov To: linux-modules@vger.kernel.org Cc: Lucas De Marchi Subject: [PATCH v2 3/4] Lookup aliases in the modules.builtin.modinfo Date: Fri, 8 Nov 2019 18:25:22 +0100 Message-Id: <20191108172524.468494-4-gladkov.alexey@gmail.com> In-Reply-To: <20191108172524.468494-1-gladkov.alexey@gmail.com> References: <20191108172524.468494-1-gladkov.alexey@gmail.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-MC-Unique: OrwgZTBzMcq2utvwMpbrXA-1 X-Mimecast-Spam-Score: 0 Sender: owner-linux-modules@vger.kernel.org Precedence: bulk List-ID: New modules.builtin.modinfo duplicates modules.builtin in the built-in module name search. If it exists, then we can use this file, but if not, then we need to fallback to the old file. Signed-off-by: Alexey Gladkov --- libkmod/libkmod-internal.h | 1 + libkmod/libkmod-module.c | 10 ++++-- libkmod/libkmod.c | 25 +++++++++++++++ libkmod/libkmod.h | 1 + tools/depmod.c | 63 ++++++++++++++++++++++++++++++++++++++ 5 files changed, 98 insertions(+), 2 deletions(-) diff --git a/libkmod/libkmod-internal.h b/libkmod/libkmod-internal.h index ee4b97b..b22ac2a 100644 --- a/libkmod/libkmod-internal.h +++ b/libkmod/libkmod-internal.h @@ -89,6 +89,7 @@ int kmod_lookup_alias_from_config(struct kmod_ctx *ctx, const char *name, struct int kmod_lookup_alias_from_symbols_file(struct kmod_ctx *ctx, const char *name, struct kmod_list **list) __attribute__((nonnull(1, 2, 3))); int kmod_lookup_alias_from_aliases_file(struct kmod_ctx *ctx, const char *name, struct kmod_list **list) __attribute__((nonnull(1, 2, 3))); int kmod_lookup_alias_from_moddep_file(struct kmod_ctx *ctx, const char *name, struct kmod_list **list) __attribute__((nonnull(1, 2, 3))); +int kmod_lookup_alias_from_kernel_builtin_file(struct kmod_ctx *ctx, const char *name, struct kmod_list **list) __attribute__((nonnull(1, 2, 3))); int kmod_lookup_alias_from_builtin_file(struct kmod_ctx *ctx, const char *name, struct kmod_list **list) __attribute__((nonnull(1, 2, 3))); bool kmod_lookup_alias_is_builtin(struct kmod_ctx *ctx, const char *name) __attribute__((nonnull(1, 2))); int kmod_lookup_alias_from_commands(struct kmod_ctx *ctx, const char *name, struct kmod_list **list) __attribute__((nonnull(1, 2, 3))); diff --git a/libkmod/libkmod-module.c b/libkmod/libkmod-module.c index 8fbabd2..ee7e6bd 100644 --- a/libkmod/libkmod-module.c +++ b/libkmod/libkmod-module.c @@ -575,10 +575,16 @@ KMOD_EXPORT int kmod_module_new_from_lookup(struct kmod_ctx *ctx, err = kmod_lookup_alias_from_aliases_file(ctx, alias, list); CHECK_ERR_AND_FINISH(err, fail, list, finish); - DBG(ctx, "lookup modules.builtin %s\n", alias); - err = kmod_lookup_alias_from_builtin_file(ctx, alias, list); + DBG(ctx, "lookup modules.builtin.modinfo %s\n", alias); + err = kmod_lookup_alias_from_kernel_builtin_file(ctx, alias, list); CHECK_ERR_AND_FINISH(err, fail, list, finish); + if (err == 0) { + DBG(ctx, "lookup modules.builtin %s\n", alias); + err = kmod_lookup_alias_from_builtin_file(ctx, alias, list); + CHECK_ERR_AND_FINISH(err, fail, list, finish); + } + finish: DBG(ctx, "lookup %s=%d, list=%p\n", alias, err, *list); return err; diff --git a/libkmod/libkmod.c b/libkmod/libkmod.c index 69fe431..c9d9e2a 100644 --- a/libkmod/libkmod.c +++ b/libkmod/libkmod.c @@ -57,6 +57,7 @@ static struct _index_files { [KMOD_INDEX_MODULES_DEP] = { .fn = "modules.dep", .prefix = "" }, [KMOD_INDEX_MODULES_ALIAS] = { .fn = "modules.alias", .prefix = "alias " }, [KMOD_INDEX_MODULES_SYMBOL] = { .fn = "modules.symbols", .prefix = "alias "}, + [KMOD_INDEX_MODULES_BUILTIN_ALIAS] = { .fn = "modules.builtin.alias", .prefix = "" }, [KMOD_INDEX_MODULES_BUILTIN] = { .fn = "modules.builtin", .prefix = ""}, }; @@ -522,6 +523,30 @@ static char *lookup_builtin_file(struct kmod_ctx *ctx, const char *name) return line; } +int kmod_lookup_alias_from_kernel_builtin_file(struct kmod_ctx *ctx, + const char *name, + struct kmod_list **list) +{ + struct kmod_list *l; + int ret = kmod_lookup_alias_from_alias_bin(ctx, + KMOD_INDEX_MODULES_BUILTIN_ALIAS, + name, list); + if (ret > 0) { + kmod_list_foreach(l, *list) { + struct kmod_module *mod = l->data; + kmod_module_set_builtin(mod, true); + } + } else if (ret == -ENOSYS) { + /* + * If the system does not support this yet, then + * there is no need to return an error. + */ + ret = 0; + } + + return ret; +} + int kmod_lookup_alias_from_builtin_file(struct kmod_ctx *ctx, const char *name, struct kmod_list **list) { diff --git a/libkmod/libkmod.h b/libkmod/libkmod.h index 352627e..3cab2e5 100644 --- a/libkmod/libkmod.h +++ b/libkmod/libkmod.h @@ -70,6 +70,7 @@ enum kmod_index { KMOD_INDEX_MODULES_DEP = 0, KMOD_INDEX_MODULES_ALIAS, KMOD_INDEX_MODULES_SYMBOL, + KMOD_INDEX_MODULES_BUILTIN_ALIAS, KMOD_INDEX_MODULES_BUILTIN, /* Padding to make sure enum is not mapped to char */ _KMOD_INDEX_PAD = 1U << 31, diff --git a/tools/depmod.c b/tools/depmod.c index 391afe9..fbbce10 100644 --- a/tools/depmod.c +++ b/tools/depmod.c @@ -2402,6 +2402,68 @@ static int output_devname(struct depmod *depmod, FILE *out) return 0; } +static int output_builtin_alias_bin(struct depmod *depmod, FILE *out) +{ + int ret = 0, count = 0; + struct index_node *idx; + struct kmod_list *l, *builtin = NULL; + + idx = index_create(); + + if (idx == NULL) { + ret = -ENOMEM; + goto fail; + } + + ret = kmod_module_get_builtin(depmod->ctx, &builtin); + if (ret < 0) { + if (ret == -ENOENT) + ret = 0; + goto fail; + } + + kmod_list_foreach(l, builtin) { + struct kmod_list *ll, *info_list = NULL; + struct kmod_module *mod = l->data; + const char *modname = kmod_module_get_name(mod); + + ret = kmod_module_get_info(mod, &info_list); + if (ret < 0) + goto fail; + + kmod_list_foreach(ll, info_list) { + char alias[PATH_MAX]; + const char *key = kmod_module_info_get_key(ll); + const char *value = kmod_module_info_get_value(ll); + + if (!streq(key, "alias")) + continue; + + alias[0] = '\0'; + if (alias_normalize(value, alias, NULL) < 0) { + WRN("Unmatched bracket in %s\n", value); + continue; + } + + index_insert(idx, alias, modname, 0); + } + + kmod_module_info_free_list(info_list); + + index_insert(idx, modname, modname, 0); + count++; + } + + if (count) + index_write(idx, out); + index_destroy(idx); +fail: + if (builtin) + kmod_module_unref_list(builtin); + + return ret; +} + static int depmod_output(struct depmod *depmod, FILE *out) { static const struct depfile { @@ -2416,6 +2478,7 @@ static int depmod_output(struct depmod *depmod, FILE *out) { "modules.symbols", output_symbols }, { "modules.symbols.bin", output_symbols_bin }, { "modules.builtin.bin", output_builtin_bin }, + { "modules.builtin.alias.bin", output_builtin_alias_bin }, { "modules.devname", output_devname }, { } };