![Greg Kroah-Hartman](/assets/img/avatar_default.png)
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>
660 lines
17 KiB
C
660 lines
17 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/fs/nfs/callback_proc.c
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*
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* Copyright (C) 2004 Trond Myklebust
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*
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* NFSv4 callback procedures
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*/
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#include <linux/nfs4.h>
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#include <linux/nfs_fs.h>
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#include <linux/slab.h>
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#include <linux/rcupdate.h>
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#include "nfs4_fs.h"
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#include "callback.h"
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#include "delegation.h"
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#include "internal.h"
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#include "pnfs.h"
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#include "nfs4session.h"
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#include "nfs4trace.h"
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#define NFSDBG_FACILITY NFSDBG_CALLBACK
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__be32 nfs4_callback_getattr(void *argp, void *resp,
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struct cb_process_state *cps)
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{
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struct cb_getattrargs *args = argp;
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struct cb_getattrres *res = resp;
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struct nfs_delegation *delegation;
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struct nfs_inode *nfsi;
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struct inode *inode;
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res->status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
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if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */
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goto out;
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res->bitmap[0] = res->bitmap[1] = 0;
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res->status = htonl(NFS4ERR_BADHANDLE);
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dprintk_rcu("NFS: GETATTR callback request from %s\n",
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rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
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inode = nfs_delegation_find_inode(cps->clp, &args->fh);
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if (inode == NULL) {
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trace_nfs4_cb_getattr(cps->clp, &args->fh, NULL,
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-ntohl(res->status));
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goto out;
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}
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nfsi = NFS_I(inode);
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rcu_read_lock();
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delegation = rcu_dereference(nfsi->delegation);
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if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0)
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goto out_iput;
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res->size = i_size_read(inode);
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res->change_attr = delegation->change_attr;
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if (nfs_have_writebacks(inode))
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res->change_attr++;
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res->ctime = inode->i_ctime;
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res->mtime = inode->i_mtime;
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res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) &
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args->bitmap[0];
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res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) &
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args->bitmap[1];
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res->status = 0;
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out_iput:
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rcu_read_unlock();
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trace_nfs4_cb_getattr(cps->clp, &args->fh, inode, -ntohl(res->status));
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iput(inode);
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out:
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dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status));
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return res->status;
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}
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__be32 nfs4_callback_recall(void *argp, void *resp,
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struct cb_process_state *cps)
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{
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struct cb_recallargs *args = argp;
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struct inode *inode;
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__be32 res;
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res = htonl(NFS4ERR_OP_NOT_IN_SESSION);
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if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */
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goto out;
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dprintk_rcu("NFS: RECALL callback request from %s\n",
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rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
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res = htonl(NFS4ERR_BADHANDLE);
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inode = nfs_delegation_find_inode(cps->clp, &args->fh);
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if (inode == NULL) {
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trace_nfs4_cb_recall(cps->clp, &args->fh, NULL,
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&args->stateid, -ntohl(res));
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goto out;
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}
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/* Set up a helper thread to actually return the delegation */
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switch (nfs_async_inode_return_delegation(inode, &args->stateid)) {
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case 0:
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res = 0;
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break;
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case -ENOENT:
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res = htonl(NFS4ERR_BAD_STATEID);
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break;
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default:
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res = htonl(NFS4ERR_RESOURCE);
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}
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trace_nfs4_cb_recall(cps->clp, &args->fh, inode,
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&args->stateid, -ntohl(res));
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iput(inode);
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out:
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dprintk("%s: exit with status = %d\n", __func__, ntohl(res));
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return res;
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}
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#if defined(CONFIG_NFS_V4_1)
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/*
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* Lookup a layout inode by stateid
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*
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* Note: returns a refcount on the inode and superblock
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*/
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static struct inode *nfs_layout_find_inode_by_stateid(struct nfs_client *clp,
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const nfs4_stateid *stateid)
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{
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struct nfs_server *server;
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struct inode *inode;
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struct pnfs_layout_hdr *lo;
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restart:
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list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
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list_for_each_entry(lo, &server->layouts, plh_layouts) {
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if (stateid != NULL &&
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!nfs4_stateid_match_other(stateid, &lo->plh_stateid))
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continue;
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inode = igrab(lo->plh_inode);
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if (!inode)
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continue;
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if (!nfs_sb_active(inode->i_sb)) {
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rcu_read_unlock();
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spin_unlock(&clp->cl_lock);
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iput(inode);
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spin_lock(&clp->cl_lock);
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rcu_read_lock();
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goto restart;
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}
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return inode;
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}
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}
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return NULL;
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}
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/*
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* Lookup a layout inode by filehandle.
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*
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* Note: returns a refcount on the inode and superblock
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*
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*/
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static struct inode *nfs_layout_find_inode_by_fh(struct nfs_client *clp,
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const struct nfs_fh *fh)
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{
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struct nfs_server *server;
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struct nfs_inode *nfsi;
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struct inode *inode;
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struct pnfs_layout_hdr *lo;
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restart:
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list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
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list_for_each_entry(lo, &server->layouts, plh_layouts) {
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nfsi = NFS_I(lo->plh_inode);
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if (nfs_compare_fh(fh, &nfsi->fh))
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continue;
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if (nfsi->layout != lo)
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continue;
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inode = igrab(lo->plh_inode);
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if (!inode)
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continue;
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if (!nfs_sb_active(inode->i_sb)) {
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rcu_read_unlock();
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spin_unlock(&clp->cl_lock);
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iput(inode);
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spin_lock(&clp->cl_lock);
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rcu_read_lock();
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goto restart;
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}
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return inode;
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}
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}
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return NULL;
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}
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static struct inode *nfs_layout_find_inode(struct nfs_client *clp,
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const struct nfs_fh *fh,
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const nfs4_stateid *stateid)
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{
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struct inode *inode;
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spin_lock(&clp->cl_lock);
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rcu_read_lock();
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inode = nfs_layout_find_inode_by_stateid(clp, stateid);
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if (!inode)
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inode = nfs_layout_find_inode_by_fh(clp, fh);
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rcu_read_unlock();
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spin_unlock(&clp->cl_lock);
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return inode;
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}
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/*
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* Enforce RFC5661 section 12.5.5.2.1. (Layout Recall and Return Sequencing)
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*/
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static u32 pnfs_check_callback_stateid(struct pnfs_layout_hdr *lo,
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const nfs4_stateid *new)
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{
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u32 oldseq, newseq;
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/* Is the stateid still not initialised? */
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if (!pnfs_layout_is_valid(lo))
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return NFS4ERR_DELAY;
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/* Mismatched stateid? */
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if (!nfs4_stateid_match_other(&lo->plh_stateid, new))
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return NFS4ERR_BAD_STATEID;
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newseq = be32_to_cpu(new->seqid);
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/* Are we already in a layout recall situation? */
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if (test_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags) &&
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lo->plh_return_seq != 0) {
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if (newseq < lo->plh_return_seq)
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return NFS4ERR_OLD_STATEID;
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if (newseq > lo->plh_return_seq)
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return NFS4ERR_DELAY;
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goto out;
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}
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/* Check that the stateid matches what we think it should be. */
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oldseq = be32_to_cpu(lo->plh_stateid.seqid);
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if (newseq > oldseq + 1)
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return NFS4ERR_DELAY;
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/* Crazy server! */
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if (newseq <= oldseq)
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return NFS4ERR_OLD_STATEID;
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out:
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return NFS_OK;
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}
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static u32 initiate_file_draining(struct nfs_client *clp,
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struct cb_layoutrecallargs *args)
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{
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struct inode *ino;
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struct pnfs_layout_hdr *lo;
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u32 rv = NFS4ERR_NOMATCHING_LAYOUT;
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LIST_HEAD(free_me_list);
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ino = nfs_layout_find_inode(clp, &args->cbl_fh, &args->cbl_stateid);
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if (!ino)
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goto out;
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pnfs_layoutcommit_inode(ino, false);
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spin_lock(&ino->i_lock);
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lo = NFS_I(ino)->layout;
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if (!lo) {
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spin_unlock(&ino->i_lock);
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goto out;
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}
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pnfs_get_layout_hdr(lo);
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rv = pnfs_check_callback_stateid(lo, &args->cbl_stateid);
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if (rv != NFS_OK)
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goto unlock;
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pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);
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/*
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* Enforce RFC5661 Section 12.5.5.2.1.5 (Bulk Recall and Return)
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*/
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if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) {
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rv = NFS4ERR_DELAY;
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goto unlock;
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}
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if (pnfs_mark_matching_lsegs_return(lo, &free_me_list,
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&args->cbl_range,
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be32_to_cpu(args->cbl_stateid.seqid))) {
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rv = NFS4_OK;
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goto unlock;
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}
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/* Embrace your forgetfulness! */
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rv = NFS4ERR_NOMATCHING_LAYOUT;
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if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) {
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NFS_SERVER(ino)->pnfs_curr_ld->return_range(lo,
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&args->cbl_range);
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}
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unlock:
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spin_unlock(&ino->i_lock);
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pnfs_free_lseg_list(&free_me_list);
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/* Free all lsegs that are attached to commit buckets */
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nfs_commit_inode(ino, 0);
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pnfs_put_layout_hdr(lo);
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out:
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trace_nfs4_cb_layoutrecall_file(clp, &args->cbl_fh, ino,
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&args->cbl_stateid, -rv);
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nfs_iput_and_deactive(ino);
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return rv;
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}
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static u32 initiate_bulk_draining(struct nfs_client *clp,
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struct cb_layoutrecallargs *args)
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{
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int stat;
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if (args->cbl_recall_type == RETURN_FSID)
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stat = pnfs_destroy_layouts_byfsid(clp, &args->cbl_fsid, true);
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else
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stat = pnfs_destroy_layouts_byclid(clp, true);
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if (stat != 0)
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return NFS4ERR_DELAY;
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return NFS4ERR_NOMATCHING_LAYOUT;
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}
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static u32 do_callback_layoutrecall(struct nfs_client *clp,
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struct cb_layoutrecallargs *args)
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{
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if (args->cbl_recall_type == RETURN_FILE)
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return initiate_file_draining(clp, args);
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return initiate_bulk_draining(clp, args);
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}
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__be32 nfs4_callback_layoutrecall(void *argp, void *resp,
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struct cb_process_state *cps)
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{
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struct cb_layoutrecallargs *args = argp;
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u32 res = NFS4ERR_OP_NOT_IN_SESSION;
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if (cps->clp)
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res = do_callback_layoutrecall(cps->clp, args);
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return cpu_to_be32(res);
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}
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static void pnfs_recall_all_layouts(struct nfs_client *clp)
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{
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struct cb_layoutrecallargs args;
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/* Pretend we got a CB_LAYOUTRECALL(ALL) */
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memset(&args, 0, sizeof(args));
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args.cbl_recall_type = RETURN_ALL;
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/* FIXME we ignore errors, what should we do? */
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do_callback_layoutrecall(clp, &args);
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}
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__be32 nfs4_callback_devicenotify(void *argp, void *resp,
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struct cb_process_state *cps)
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{
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struct cb_devicenotifyargs *args = argp;
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int i;
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__be32 res = 0;
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struct nfs_client *clp = cps->clp;
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struct nfs_server *server = NULL;
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if (!clp) {
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res = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION);
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goto out;
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}
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for (i = 0; i < args->ndevs; i++) {
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struct cb_devicenotifyitem *dev = &args->devs[i];
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if (!server ||
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server->pnfs_curr_ld->id != dev->cbd_layout_type) {
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rcu_read_lock();
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list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link)
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if (server->pnfs_curr_ld &&
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server->pnfs_curr_ld->id == dev->cbd_layout_type) {
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rcu_read_unlock();
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goto found;
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}
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rcu_read_unlock();
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continue;
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}
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found:
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nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id);
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}
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out:
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kfree(args->devs);
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return res;
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}
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/*
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* Validate the sequenceID sent by the server.
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* Return success if the sequenceID is one more than what we last saw on
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* this slot, accounting for wraparound. Increments the slot's sequence.
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*
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* We don't yet implement a duplicate request cache, instead we set the
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* back channel ca_maxresponsesize_cached to zero. This is OK for now
|
|
* since we only currently implement idempotent callbacks anyway.
|
|
*
|
|
* We have a single slot backchannel at this time, so we don't bother
|
|
* checking the used_slots bit array on the table. The lower layer guarantees
|
|
* a single outstanding callback request at a time.
|
|
*/
|
|
static __be32
|
|
validate_seqid(const struct nfs4_slot_table *tbl, const struct nfs4_slot *slot,
|
|
const struct cb_sequenceargs * args)
|
|
{
|
|
if (args->csa_slotid > tbl->server_highest_slotid)
|
|
return htonl(NFS4ERR_BADSLOT);
|
|
|
|
/* Replay */
|
|
if (args->csa_sequenceid == slot->seq_nr) {
|
|
if (nfs4_test_locked_slot(tbl, slot->slot_nr))
|
|
return htonl(NFS4ERR_DELAY);
|
|
/* Signal process_op to set this error on next op */
|
|
if (args->csa_cachethis == 0)
|
|
return htonl(NFS4ERR_RETRY_UNCACHED_REP);
|
|
|
|
/* Liar! We never allowed you to set csa_cachethis != 0 */
|
|
return htonl(NFS4ERR_SEQ_FALSE_RETRY);
|
|
}
|
|
|
|
/* Wraparound */
|
|
if (unlikely(slot->seq_nr == 0xFFFFFFFFU)) {
|
|
if (args->csa_sequenceid == 1)
|
|
return htonl(NFS4_OK);
|
|
} else if (likely(args->csa_sequenceid == slot->seq_nr + 1))
|
|
return htonl(NFS4_OK);
|
|
|
|
/* Misordered request */
|
|
return htonl(NFS4ERR_SEQ_MISORDERED);
|
|
}
|
|
|
|
/*
|
|
* For each referring call triple, check the session's slot table for
|
|
* a match. If the slot is in use and the sequence numbers match, the
|
|
* client is still waiting for a response to the original request.
|
|
*/
|
|
static bool referring_call_exists(struct nfs_client *clp,
|
|
uint32_t nrclists,
|
|
struct referring_call_list *rclists)
|
|
{
|
|
bool status = 0;
|
|
int i, j;
|
|
struct nfs4_session *session;
|
|
struct nfs4_slot_table *tbl;
|
|
struct referring_call_list *rclist;
|
|
struct referring_call *ref;
|
|
|
|
/*
|
|
* XXX When client trunking is implemented, this becomes
|
|
* a session lookup from within the loop
|
|
*/
|
|
session = clp->cl_session;
|
|
tbl = &session->fc_slot_table;
|
|
|
|
for (i = 0; i < nrclists; i++) {
|
|
rclist = &rclists[i];
|
|
if (memcmp(session->sess_id.data,
|
|
rclist->rcl_sessionid.data,
|
|
NFS4_MAX_SESSIONID_LEN) != 0)
|
|
continue;
|
|
|
|
for (j = 0; j < rclist->rcl_nrefcalls; j++) {
|
|
ref = &rclist->rcl_refcalls[j];
|
|
status = nfs4_slot_wait_on_seqid(tbl, ref->rc_slotid,
|
|
ref->rc_sequenceid, HZ >> 1) < 0;
|
|
if (status)
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
__be32 nfs4_callback_sequence(void *argp, void *resp,
|
|
struct cb_process_state *cps)
|
|
{
|
|
struct cb_sequenceargs *args = argp;
|
|
struct cb_sequenceres *res = resp;
|
|
struct nfs4_slot_table *tbl;
|
|
struct nfs4_slot *slot;
|
|
struct nfs_client *clp;
|
|
int i;
|
|
__be32 status = htonl(NFS4ERR_BADSESSION);
|
|
|
|
clp = nfs4_find_client_sessionid(cps->net, args->csa_addr,
|
|
&args->csa_sessionid, cps->minorversion);
|
|
if (clp == NULL)
|
|
goto out;
|
|
|
|
if (!(clp->cl_session->flags & SESSION4_BACK_CHAN))
|
|
goto out;
|
|
|
|
tbl = &clp->cl_session->bc_slot_table;
|
|
|
|
/* Set up res before grabbing the spinlock */
|
|
memcpy(&res->csr_sessionid, &args->csa_sessionid,
|
|
sizeof(res->csr_sessionid));
|
|
res->csr_sequenceid = args->csa_sequenceid;
|
|
res->csr_slotid = args->csa_slotid;
|
|
|
|
spin_lock(&tbl->slot_tbl_lock);
|
|
/* state manager is resetting the session */
|
|
if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state)) {
|
|
status = htonl(NFS4ERR_DELAY);
|
|
/* Return NFS4ERR_BADSESSION if we're draining the session
|
|
* in order to reset it.
|
|
*/
|
|
if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state))
|
|
status = htonl(NFS4ERR_BADSESSION);
|
|
goto out_unlock;
|
|
}
|
|
|
|
status = htonl(NFS4ERR_BADSLOT);
|
|
slot = nfs4_lookup_slot(tbl, args->csa_slotid);
|
|
if (IS_ERR(slot))
|
|
goto out_unlock;
|
|
|
|
res->csr_highestslotid = tbl->server_highest_slotid;
|
|
res->csr_target_highestslotid = tbl->target_highest_slotid;
|
|
|
|
status = validate_seqid(tbl, slot, args);
|
|
if (status)
|
|
goto out_unlock;
|
|
if (!nfs4_try_to_lock_slot(tbl, slot)) {
|
|
status = htonl(NFS4ERR_DELAY);
|
|
goto out_unlock;
|
|
}
|
|
cps->slot = slot;
|
|
|
|
/* The ca_maxresponsesize_cached is 0 with no DRC */
|
|
if (args->csa_cachethis != 0) {
|
|
status = htonl(NFS4ERR_REP_TOO_BIG_TO_CACHE);
|
|
goto out_unlock;
|
|
}
|
|
|
|
/*
|
|
* Check for pending referring calls. If a match is found, a
|
|
* related callback was received before the response to the original
|
|
* call.
|
|
*/
|
|
if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) {
|
|
status = htonl(NFS4ERR_DELAY);
|
|
goto out_unlock;
|
|
}
|
|
|
|
/*
|
|
* RFC5661 20.9.3
|
|
* If CB_SEQUENCE returns an error, then the state of the slot
|
|
* (sequence ID, cached reply) MUST NOT change.
|
|
*/
|
|
slot->seq_nr = args->csa_sequenceid;
|
|
out_unlock:
|
|
spin_unlock(&tbl->slot_tbl_lock);
|
|
|
|
out:
|
|
cps->clp = clp; /* put in nfs4_callback_compound */
|
|
for (i = 0; i < args->csa_nrclists; i++)
|
|
kfree(args->csa_rclists[i].rcl_refcalls);
|
|
kfree(args->csa_rclists);
|
|
|
|
if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) {
|
|
cps->drc_status = status;
|
|
status = 0;
|
|
} else
|
|
res->csr_status = status;
|
|
|
|
trace_nfs4_cb_sequence(args, res, status);
|
|
return status;
|
|
}
|
|
|
|
static bool
|
|
validate_bitmap_values(unsigned long mask)
|
|
{
|
|
return (mask & ~RCA4_TYPE_MASK_ALL) == 0;
|
|
}
|
|
|
|
__be32 nfs4_callback_recallany(void *argp, void *resp,
|
|
struct cb_process_state *cps)
|
|
{
|
|
struct cb_recallanyargs *args = argp;
|
|
__be32 status;
|
|
fmode_t flags = 0;
|
|
|
|
status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION);
|
|
if (!cps->clp) /* set in cb_sequence */
|
|
goto out;
|
|
|
|
dprintk_rcu("NFS: RECALL_ANY callback request from %s\n",
|
|
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
|
|
|
|
status = cpu_to_be32(NFS4ERR_INVAL);
|
|
if (!validate_bitmap_values(args->craa_type_mask))
|
|
goto out;
|
|
|
|
status = cpu_to_be32(NFS4_OK);
|
|
if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *)
|
|
&args->craa_type_mask))
|
|
flags = FMODE_READ;
|
|
if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *)
|
|
&args->craa_type_mask))
|
|
flags |= FMODE_WRITE;
|
|
if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *)
|
|
&args->craa_type_mask))
|
|
pnfs_recall_all_layouts(cps->clp);
|
|
if (flags)
|
|
nfs_expire_unused_delegation_types(cps->clp, flags);
|
|
out:
|
|
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
|
|
return status;
|
|
}
|
|
|
|
/* Reduce the fore channel's max_slots to the target value */
|
|
__be32 nfs4_callback_recallslot(void *argp, void *resp,
|
|
struct cb_process_state *cps)
|
|
{
|
|
struct cb_recallslotargs *args = argp;
|
|
struct nfs4_slot_table *fc_tbl;
|
|
__be32 status;
|
|
|
|
status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
|
|
if (!cps->clp) /* set in cb_sequence */
|
|
goto out;
|
|
|
|
dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target highest slotid %u\n",
|
|
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR),
|
|
args->crsa_target_highest_slotid);
|
|
|
|
fc_tbl = &cps->clp->cl_session->fc_slot_table;
|
|
|
|
status = htonl(NFS4_OK);
|
|
|
|
nfs41_set_target_slotid(fc_tbl, args->crsa_target_highest_slotid);
|
|
nfs41_notify_server(cps->clp);
|
|
out:
|
|
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
|
|
return status;
|
|
}
|
|
|
|
__be32 nfs4_callback_notify_lock(void *argp, void *resp,
|
|
struct cb_process_state *cps)
|
|
{
|
|
struct cb_notify_lock_args *args = argp;
|
|
|
|
if (!cps->clp) /* set in cb_sequence */
|
|
return htonl(NFS4ERR_OP_NOT_IN_SESSION);
|
|
|
|
dprintk_rcu("NFS: CB_NOTIFY_LOCK request from %s\n",
|
|
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
|
|
|
|
/* Don't wake anybody if the string looked bogus */
|
|
if (args->cbnl_valid)
|
|
__wake_up(&cps->clp->cl_lock_waitq, TASK_NORMAL, 0, args);
|
|
|
|
return htonl(NFS4_OK);
|
|
}
|
|
#endif /* CONFIG_NFS_V4_1 */
|