Commit ce8866f0 authored by Scott Mayhew's avatar Scott Mayhew Committed by Anna Schumaker
Browse files

NFS: Attach supplementary error information to fs_context. 



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: default avatarScott Mayhew <smayhew@redhat.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 62a55d08

fs/nfs/fs_context.c

+36 −69
Original line number Diff line number Diff line
@@ -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 @@ out_no_data: 
		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 @@ out_no_data: 
		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",

	return nfs_invalf(fc, "NFS4: Invalid number of RPC auth flavours %d",

		      data->auth_flavourlen);

	return -EINVAL;



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;

}

fs/nfs/getroot.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

	}

fs/nfs/internal.h

+4 −0
Original line number Diff line number Diff line
@@ -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;

fs/nfs/namespace.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

fs/nfs/nfs4super.c

+2 −0
Original line number Diff line number Diff line
@@ -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");

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