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b24413180f
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
257 lines
8.8 KiB
C
257 lines
8.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _NFS_FS_SB
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#define _NFS_FS_SB
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#include <linux/list.h>
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#include <linux/backing-dev.h>
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#include <linux/idr.h>
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#include <linux/wait.h>
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#include <linux/nfs_xdr.h>
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#include <linux/sunrpc/xprt.h>
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#include <linux/atomic.h>
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struct nfs4_session;
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struct nfs_iostats;
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struct nlm_host;
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struct nfs4_sequence_args;
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struct nfs4_sequence_res;
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struct nfs_server;
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struct nfs4_minor_version_ops;
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struct nfs41_server_scope;
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struct nfs41_impl_id;
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/*
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* The nfs_client identifies our client state to the server.
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*/
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struct nfs_client {
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atomic_t cl_count;
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atomic_t cl_mds_count;
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int cl_cons_state; /* current construction state (-ve: init error) */
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#define NFS_CS_READY 0 /* ready to be used */
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#define NFS_CS_INITING 1 /* busy initialising */
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#define NFS_CS_SESSION_INITING 2 /* busy initialising session */
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unsigned long cl_res_state; /* NFS resources state */
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#define NFS_CS_CALLBACK 1 /* - callback started */
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#define NFS_CS_IDMAP 2 /* - idmap started */
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#define NFS_CS_RENEWD 3 /* - renewd started */
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#define NFS_CS_STOP_RENEW 4 /* no more state to renew */
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#define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */
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unsigned long cl_flags; /* behavior switches */
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#define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */
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#define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */
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#define NFS_CS_MIGRATION 2 /* - transparent state migr */
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#define NFS_CS_INFINITE_SLOTS 3 /* - don't limit TCP slots */
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#define NFS_CS_NO_RETRANS_TIMEOUT 4 /* - Disable retransmit timeouts */
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#define NFS_CS_TSM_POSSIBLE 5 /* - Maybe state migration */
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struct sockaddr_storage cl_addr; /* server identifier */
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size_t cl_addrlen;
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char * cl_hostname; /* hostname of server */
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char * cl_acceptor; /* GSSAPI acceptor name */
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struct list_head cl_share_link; /* link in global client list */
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struct list_head cl_superblocks; /* List of nfs_server structs */
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struct rpc_clnt * cl_rpcclient;
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const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
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int cl_proto; /* Network transport protocol */
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struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */
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u32 cl_minorversion;/* NFSv4 minorversion */
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struct rpc_cred *cl_machine_cred;
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#if IS_ENABLED(CONFIG_NFS_V4)
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struct list_head cl_ds_clients; /* auth flavor data servers */
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u64 cl_clientid; /* constant */
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nfs4_verifier cl_confirm; /* Clientid verifier */
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unsigned long cl_state;
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spinlock_t cl_lock;
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unsigned long cl_lease_time;
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unsigned long cl_last_renewal;
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struct delayed_work cl_renewd;
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struct rpc_wait_queue cl_rpcwaitq;
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/* idmapper */
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struct idmap * cl_idmap;
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/* Client owner identifier */
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const char * cl_owner_id;
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u32 cl_cb_ident; /* v4.0 callback identifier */
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const struct nfs4_minor_version_ops *cl_mvops;
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unsigned long cl_mig_gen;
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/* NFSv4.0 transport blocking */
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struct nfs4_slot_table *cl_slot_tbl;
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/* The sequence id to use for the next CREATE_SESSION */
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u32 cl_seqid;
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/* The flags used for obtaining the clientid during EXCHANGE_ID */
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u32 cl_exchange_flags;
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struct nfs4_session *cl_session; /* shared session */
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bool cl_preserve_clid;
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struct nfs41_server_owner *cl_serverowner;
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struct nfs41_server_scope *cl_serverscope;
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struct nfs41_impl_id *cl_implid;
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/* nfs 4.1+ state protection modes: */
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unsigned long cl_sp4_flags;
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#define NFS_SP4_MACH_CRED_MINIMAL 1 /* Minimal sp4_mach_cred - state ops
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* must use machine cred */
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#define NFS_SP4_MACH_CRED_CLEANUP 2 /* CLOSE and LOCKU */
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#define NFS_SP4_MACH_CRED_SECINFO 3 /* SECINFO and SECINFO_NO_NAME */
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#define NFS_SP4_MACH_CRED_STATEID 4 /* TEST_STATEID and FREE_STATEID */
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#define NFS_SP4_MACH_CRED_WRITE 5 /* WRITE */
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#define NFS_SP4_MACH_CRED_COMMIT 6 /* COMMIT */
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#define NFS_SP4_MACH_CRED_PNFS_CLEANUP 7 /* LAYOUTRETURN */
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#if IS_ENABLED(CONFIG_NFS_V4_1)
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wait_queue_head_t cl_lock_waitq;
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#endif /* CONFIG_NFS_V4_1 */
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#endif /* CONFIG_NFS_V4 */
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/* Our own IP address, as a null-terminated string.
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* This is used to generate the mv0 callback address.
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*/
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char cl_ipaddr[48];
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#ifdef CONFIG_NFS_FSCACHE
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struct fscache_cookie *fscache; /* client index cache cookie */
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#endif
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struct net *cl_net;
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};
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/*
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* NFS client parameters stored in the superblock.
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*/
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struct nfs_server {
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struct nfs_client * nfs_client; /* shared client and NFS4 state */
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struct list_head client_link; /* List of other nfs_server structs
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* that share the same client
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*/
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struct list_head master_link; /* link in master servers list */
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struct rpc_clnt * client; /* RPC client handle */
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struct rpc_clnt * client_acl; /* ACL RPC client handle */
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struct nlm_host *nlm_host; /* NLM client handle */
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struct nfs_iostats __percpu *io_stats; /* I/O statistics */
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atomic_long_t writeback; /* number of writeback pages */
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int flags; /* various flags */
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unsigned int caps; /* server capabilities */
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unsigned int rsize; /* read size */
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unsigned int rpages; /* read size (in pages) */
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unsigned int wsize; /* write size */
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unsigned int wpages; /* write size (in pages) */
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unsigned int wtmult; /* server disk block size */
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unsigned int dtsize; /* readdir size */
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unsigned short port; /* "port=" setting */
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unsigned int bsize; /* server block size */
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unsigned int acregmin; /* attr cache timeouts */
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unsigned int acregmax;
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unsigned int acdirmin;
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unsigned int acdirmax;
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unsigned int namelen;
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unsigned int options; /* extra options enabled by mount */
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unsigned int clone_blksize; /* granularity of a CLONE operation */
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#define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */
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#define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */
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struct nfs_fsid fsid;
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__u64 maxfilesize; /* maximum file size */
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struct timespec time_delta; /* smallest time granularity */
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unsigned long mount_time; /* when this fs was mounted */
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struct super_block *super; /* VFS super block */
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dev_t s_dev; /* superblock dev numbers */
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struct nfs_auth_info auth_info; /* parsed auth flavors */
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#ifdef CONFIG_NFS_FSCACHE
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struct nfs_fscache_key *fscache_key; /* unique key for superblock */
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struct fscache_cookie *fscache; /* superblock cookie */
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#endif
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u32 pnfs_blksize; /* layout_blksize attr */
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#if IS_ENABLED(CONFIG_NFS_V4)
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u32 attr_bitmask[3];/* V4 bitmask representing the set
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of attributes supported on this
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filesystem */
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u32 attr_bitmask_nl[3];
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/* V4 bitmask representing the
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set of attributes supported
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on this filesystem excluding
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the label support bit. */
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u32 exclcreat_bitmask[3];
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/* V4 bitmask representing the
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set of attributes supported
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on this filesystem for the
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exclusive create. */
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u32 cache_consistency_bitmask[3];
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/* V4 bitmask representing the subset
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of change attribute, size, ctime
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and mtime attributes supported by
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the server */
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u32 acl_bitmask; /* V4 bitmask representing the ACEs
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that are supported on this
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filesystem */
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u32 fh_expire_type; /* V4 bitmask representing file
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handle volatility type for
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this filesystem */
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struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */
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struct rpc_wait_queue roc_rpcwaitq;
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void *pnfs_ld_data; /* per mount point data */
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/* the following fields are protected by nfs_client->cl_lock */
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struct rb_root state_owners;
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#endif
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struct ida openowner_id;
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struct ida lockowner_id;
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struct list_head state_owners_lru;
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struct list_head layouts;
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struct list_head delegations;
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unsigned long mig_gen;
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unsigned long mig_status;
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#define NFS_MIG_IN_TRANSITION (1)
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#define NFS_MIG_FAILED (2)
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#define NFS_MIG_TSM_POSSIBLE (3)
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void (*destroy)(struct nfs_server *);
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atomic_t active; /* Keep trace of any activity to this server */
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/* mountd-related mount options */
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struct sockaddr_storage mountd_address;
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size_t mountd_addrlen;
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u32 mountd_version;
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unsigned short mountd_port;
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unsigned short mountd_protocol;
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struct rpc_wait_queue uoc_rpcwaitq;
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};
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/* Server capabilities */
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#define NFS_CAP_READDIRPLUS (1U << 0)
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#define NFS_CAP_HARDLINKS (1U << 1)
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#define NFS_CAP_SYMLINKS (1U << 2)
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#define NFS_CAP_ACLS (1U << 3)
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#define NFS_CAP_ATOMIC_OPEN (1U << 4)
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/* #define NFS_CAP_CHANGE_ATTR (1U << 5) */
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#define NFS_CAP_FILEID (1U << 6)
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#define NFS_CAP_MODE (1U << 7)
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#define NFS_CAP_NLINK (1U << 8)
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#define NFS_CAP_OWNER (1U << 9)
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#define NFS_CAP_OWNER_GROUP (1U << 10)
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#define NFS_CAP_ATIME (1U << 11)
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#define NFS_CAP_CTIME (1U << 12)
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#define NFS_CAP_MTIME (1U << 13)
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#define NFS_CAP_POSIX_LOCK (1U << 14)
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#define NFS_CAP_UIDGID_NOMAP (1U << 15)
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#define NFS_CAP_STATEID_NFSV41 (1U << 16)
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#define NFS_CAP_ATOMIC_OPEN_V1 (1U << 17)
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#define NFS_CAP_SECURITY_LABEL (1U << 18)
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#define NFS_CAP_SEEK (1U << 19)
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#define NFS_CAP_ALLOCATE (1U << 20)
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#define NFS_CAP_DEALLOCATE (1U << 21)
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#define NFS_CAP_LAYOUTSTATS (1U << 22)
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#define NFS_CAP_CLONE (1U << 23)
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#define NFS_CAP_COPY (1U << 24)
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#endif
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