From patchwork Tue Dec 10 12:31:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Mayhew X-Patchwork-Id: 11282295 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 99B87139A for ; Tue, 10 Dec 2019 12:33:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6205F21D7D for ; Tue, 10 Dec 2019 12:33:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="b+QVcYye" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727540AbfLJMdC (ORCPT ); Tue, 10 Dec 2019 07:33:02 -0500 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:47291 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727568AbfLJMbY (ORCPT ); Tue, 10 Dec 2019 07:31:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1575981083; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=D25Ozj0ALmNADVKeQRJ1+nc3ACJQ8kWT2CuWkURI0eU=; b=b+QVcYyetY8DyjZcdeqRTW/fSCKO6xA6nmokV897fQvdX5YDjdYWIUDEEq9X93c0p7BDA8 xPOHnyr2MlvB53SZMbFJ1Npu6KKHUB3IY5CKHY6AkOOG9bwV4FljUpplAfbrT1/sOQiVQo 9+xDEOf+aZ2iXe/3Yb2DKZIIOGp8cVc= 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-193-Ogqxv0upOeub1VAJt1w6oA-1; Tue, 10 Dec 2019 07:31:19 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0810D189DF40; Tue, 10 Dec 2019 12:31:18 +0000 (UTC) Received: from coeurl.usersys.redhat.com (ovpn-123-90.rdu2.redhat.com [10.10.123.90]) by smtp.corp.redhat.com (Postfix) with ESMTP id AC4A35DA2C; Tue, 10 Dec 2019 12:31:17 +0000 (UTC) Received: by coeurl.usersys.redhat.com (Postfix, from userid 1000) id 1F15820C5A; Tue, 10 Dec 2019 07:31:16 -0500 (EST) From: Scott Mayhew To: anna.schumaker@netapp.com, trond.myklebust@hammerspace.com Cc: dhowells@redhat.com, viro@zeniv.linux.org.uk, linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org Subject: [PATCH v6 27/27] NFS: Attach supplementary error information to fs_context. Date: Tue, 10 Dec 2019 07:31:15 -0500 Message-Id: <20191210123115.1655-28-smayhew@redhat.com> In-Reply-To: <20191210123115.1655-1-smayhew@redhat.com> References: <20191210123115.1655-1-smayhew@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: Ogqxv0upOeub1VAJt1w6oA-1 X-Mimecast-Spam-Score: 0 Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: Split out from commit "NFS: Add fs_context support." Add wrappers nfs_errorf(), nfs_invalf(), and nfs_warnf() which log error information to the fs_context. Convert some printk's to use these new wrappers instead. Signed-off-by: Scott Mayhew --- fs/nfs/fs_context.c | 105 +++++++++++++++----------------------------- fs/nfs/getroot.c | 3 ++ fs/nfs/internal.h | 4 ++ fs/nfs/namespace.c | 2 +- fs/nfs/nfs4super.c | 2 + fs/nfs/super.c | 4 +- 6 files changed, 48 insertions(+), 72 deletions(-) diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c index e472334b978d..429315c011ae 100644 --- a/fs/nfs/fs_context.c +++ b/fs/nfs/fs_context.c @@ -318,10 +318,8 @@ static int nfs_auth_info_add(struct fs_context *fc, return 0; } - if (auth_info->flavor_len + 1 >= max_flavor_len) { - dfprintk(MOUNT, "NFS: too many sec= flavors\n"); - return -EINVAL; - } + if (auth_info->flavor_len + 1 >= max_flavor_len) + return nfs_invalf(fc, "NFS: too many sec= flavors"); auth_info->flavors[auth_info->flavor_len++] = flavor; return 0; @@ -378,9 +376,7 @@ static int nfs_parse_security_flavors(struct fs_context *fc, pseudoflavor = RPC_AUTH_GSS_SPKMP; break; default: - dfprintk(MOUNT, - "NFS: sec= option '%s' not recognized\n", p); - return -EINVAL; + return nfs_invalf(fc, "NFS: sec=%s option not recognized", p); } ret = nfs_auth_info_add(fc, &ctx->auth_info, pseudoflavor); @@ -425,8 +421,7 @@ static int nfs_parse_version_string(struct fs_context *fc, ctx->minorversion = 2; break; default: - dfprintk(MOUNT, "NFS: Unsupported NFS version\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: Unsupported NFS version"); } return 0; } @@ -451,10 +446,8 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, switch (opt) { case Opt_source: - if (fc->source) { - dfprintk(MOUNT, "NFS: Multiple sources not supported\n"); - return -EINVAL; - } + if (fc->source) + return nfs_invalf(fc, "NFS: Multiple sources not supported"); fc->source = param->string; param->string = NULL; break; @@ -664,8 +657,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, xprt_load_transport(param->string); break; default: - dfprintk(MOUNT, "NFS: unrecognized transport protocol\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: Unrecognized transport protocol"); } ctx->protofamily = protofamily; @@ -688,8 +680,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, break; case Opt_xprt_rdma: /* not used for side protocols */ default: - dfprintk(MOUNT, "NFS: unrecognized transport protocol\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: Unrecognized transport protocol"); } ctx->mountfamily = mountfamily; break; @@ -774,13 +765,11 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, return 0; out_invalid_value: - printk(KERN_INFO "NFS: Bad mount option value specified\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: Bad mount option value specified"); out_invalid_address: - printk(KERN_INFO "NFS: Bad IP address specified\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: Bad IP address specified"); out_of_bounds: - printk(KERN_INFO "NFS: Value for '%s' out of range\n", param->key); + nfs_invalf(fc, "NFS: Value for '%s' out of range", param->key); return -ERANGE; } @@ -846,19 +835,15 @@ static int nfs_parse_source(struct fs_context *fc, return 0; out_bad_devname: - dfprintk(MOUNT, "NFS: device name not in host:path format\n"); - return -EINVAL; - + return nfs_invalf(fc, "NFS: device name not in host:path format"); out_nomem: - dfprintk(MOUNT, "NFS: not enough memory to parse device name\n"); + nfs_errorf(fc, "NFS: not enough memory to parse device name"); return -ENOMEM; - out_hostname: - dfprintk(MOUNT, "NFS: server hostname too long\n"); + nfs_errorf(fc, "NFS: server hostname too long"); return -ENAMETOOLONG; - out_path: - dfprintk(MOUNT, "NFS: export pathname too long\n"); + nfs_errorf(fc, "NFS: export pathname too long"); return -ENAMETOOLONG; } @@ -1015,29 +1000,23 @@ static int nfs23_parse_monolithic(struct fs_context *fc, ctx->skip_reconfig_option_check = true; return 0; } - dfprintk(MOUNT, "NFS: mount program didn't pass any mount data\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: mount program didn't pass any mount data"); out_no_v3: - dfprintk(MOUNT, "NFS: nfs_mount_data version %d does not support v3\n", - data->version); - return -EINVAL; + return nfs_invalf(fc, "NFS: nfs_mount_data version does not support v3"); out_no_sec: - dfprintk(MOUNT, "NFS: nfs_mount_data version supports only AUTH_SYS\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: nfs_mount_data version supports only AUTH_SYS"); out_nomem: - dfprintk(MOUNT, "NFS: not enough memory to handle mount options\n"); + dfprintk(MOUNT, "NFS: not enough memory to handle mount options"); return -ENOMEM; out_no_address: - dfprintk(MOUNT, "NFS: mount program didn't pass remote address\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: mount program didn't pass remote address"); out_invalid_fh: - dfprintk(MOUNT, "NFS: invalid root filehandle\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: invalid root filehandle"); } #if IS_ENABLED(CONFIG_NFS_V4) @@ -1132,21 +1111,17 @@ static int nfs4_parse_monolithic(struct fs_context *fc, ctx->skip_reconfig_option_check = true; return 0; } - dfprintk(MOUNT, "NFS4: mount program didn't pass any mount data\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS4: mount program didn't pass any mount data"); out_inval_auth: - dfprintk(MOUNT, "NFS4: Invalid number of RPC auth flavours %d\n", - data->auth_flavourlen); - return -EINVAL; + return nfs_invalf(fc, "NFS4: Invalid number of RPC auth flavours %d", + data->auth_flavourlen); out_no_address: - dfprintk(MOUNT, "NFS4: mount program didn't pass remote address\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS4: mount program didn't pass remote address"); out_invalid_transport_udp: - dfprintk(MOUNT, "NFSv4: Unsupported transport protocol udp\n"); - return -EINVAL; + return nfs_invalf(fc, "NFSv4: Unsupported transport protocol udp"); } #endif @@ -1164,8 +1139,7 @@ static int nfs_fs_context_parse_monolithic(struct fs_context *fc, return nfs4_parse_monolithic(fc, data); #endif - dfprintk(MOUNT, "NFS: Unsupported monolithic data version\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: Unsupported monolithic data version"); } /* @@ -1253,32 +1227,25 @@ static int nfs_fs_context_validate(struct fs_context *fc) return 0; out_no_device_name: - dfprintk(MOUNT, "NFS: Device name not specified\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: Device name not specified"); out_v4_not_compiled: - dfprintk(MOUNT, "NFS: NFSv4 is not compiled into kernel\n"); + nfs_errorf(fc, "NFS: NFSv4 is not compiled into kernel"); return -EPROTONOSUPPORT; out_invalid_transport_udp: - dfprintk(MOUNT, "NFSv4: Unsupported transport protocol udp\n"); - return -EINVAL; + return nfs_invalf(fc, "NFSv4: Unsupported transport protocol udp"); out_no_address: - dfprintk(MOUNT, "NFS: mount program didn't pass remote address\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: mount program didn't pass remote address"); out_mountproto_mismatch: - dfprintk(MOUNT, "NFS: Mount server address does not match mountproto= option\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: Mount server address does not match mountproto= option"); out_proto_mismatch: - dfprintk(MOUNT, "NFS: Server address does not match proto= option\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: Server address does not match proto= option"); out_minorversion_mismatch: - dfprintk(MOUNT, "NFS: Mount option vers=%u does not support minorversion=%u\n", + return nfs_invalf(fc, "NFS: Mount option vers=%u does not support minorversion=%u", ctx->version, ctx->minorversion); - return -EINVAL; out_migration_misuse: - dfprintk(MOUNT, "NFS: 'Migration' not supported for this NFS version\n"); - return -EINVAL; + return nfs_invalf(fc, "NFS: 'Migration' not supported for this NFS version"); out_version_unavailable: - dfprintk(MOUNT, "NFS: Version unavailable\n"); + nfs_errorf(fc, "NFS: Version unavailable"); return ret; } diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c index ab45496d23a6..b012c2668a1f 100644 --- a/fs/nfs/getroot.c +++ b/fs/nfs/getroot.c @@ -86,6 +86,7 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc) error = server->nfs_client->rpc_ops->getroot(server, ctx->mntfh, &fsinfo); if (error < 0) { dprintk("nfs_get_root: getattr error = %d\n", -error); + nfs_errorf(fc, "NFS: Couldn't getattr on root"); goto out_fattr; } @@ -93,6 +94,7 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc) if (IS_ERR(inode)) { dprintk("nfs_get_root: get root inode failed\n"); error = PTR_ERR(inode); + nfs_errorf(fc, "NFS: Couldn't get root inode"); goto out_fattr; } @@ -108,6 +110,7 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc) if (IS_ERR(root)) { dprintk("nfs_get_root: get root dentry failed\n"); error = PTR_ERR(root); + nfs_errorf(fc, "NFS: Couldn't get root dentry"); goto out_fattr; } diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index a1fd4c3ebc4e..c0257411e158 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -133,6 +133,10 @@ struct nfs_fs_context { } clone_data; }; +#define nfs_errorf(fc, fmt, ...) errorf(fc, fmt, ## __VA_ARGS__) +#define nfs_invalf(fc, fmt, ...) invalf(fc, fmt, ## __VA_ARGS__) +#define nfs_warnf(fc, fmt, ...) warnf(fc, fmt, ## __VA_ARGS__) + static inline struct nfs_fs_context *nfs_fc2context(const struct fs_context *fc) { return fc->fs_private; diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index d537350c1fb7..4fd22c0d730c 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -281,7 +281,7 @@ int nfs_do_submount(struct fs_context *fc) p = nfs_devname(dentry, buffer, 4096); if (IS_ERR(p)) { - dprintk("NFS: Couldn't determine submount pathname\n"); + nfs_errorf(fc, "NFS: Couldn't determine submount pathname"); ret = PTR_ERR(p); } else { ret = vfs_parse_fs_string(fc, "source", p, buffer + 4096 - p); diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c index 7d5ed37633d8..1475f932d7da 100644 --- a/fs/nfs/nfs4super.c +++ b/fs/nfs/nfs4super.c @@ -225,6 +225,7 @@ int nfs4_try_get_tree(struct fs_context *fc) fc, ctx->nfs_server.hostname, ctx->nfs_server.export_path); if (err) { + nfs_errorf(fc, "NFS4: Couldn't follow remote path"); dfprintk(MOUNT, "<-- nfs4_try_get_tree() = %d [error]\n", err); } else { dfprintk(MOUNT, "<-- nfs4_try_get_tree() = 0\n"); @@ -247,6 +248,7 @@ int nfs4_get_referral_tree(struct fs_context *fc) fc, ctx->nfs_server.hostname, ctx->nfs_server.export_path); if (err) { + nfs_errorf(fc, "NFS4: Couldn't follow remote path"); dfprintk(MOUNT, "<-- nfs4_get_referral_tree() = %d [error]\n", err); } else { dfprintk(MOUNT, "<-- nfs4_get_referral_tree() = 0\n"); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index ed0290d5ebf3..76e0198adcfa 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1205,7 +1205,7 @@ int nfs_get_tree_common(struct fs_context *fc) fc->s_fs_info = NULL; if (IS_ERR(s)) { error = PTR_ERR(s); - dfprintk(MOUNT, "NFS: Couldn't get superblock\n"); + nfs_errorf(fc, "NFS: Couldn't get superblock"); goto out_err_nosb; } @@ -1234,7 +1234,7 @@ int nfs_get_tree_common(struct fs_context *fc) error = nfs_get_root(s, fc); if (error < 0) { - dfprintk(MOUNT, "NFS: Couldn't get root dentry\n"); + nfs_errorf(fc, "NFS: Couldn't get root dentry"); goto error_splat_super; }