![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>
1015 lines
25 KiB
C
1015 lines
25 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/fs/nfs/nfs3proc.c
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*
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* Client-side NFSv3 procedures stubs.
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*
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* Copyright (C) 1997, Olaf Kirch
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*/
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#include <linux/mm.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/sunrpc/clnt.h>
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#include <linux/slab.h>
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#include <linux/nfs.h>
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#include <linux/nfs3.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_page.h>
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#include <linux/lockd/bind.h>
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#include <linux/nfs_mount.h>
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#include <linux/freezer.h>
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#include <linux/xattr.h>
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#include "iostat.h"
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#include "internal.h"
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#include "nfs3_fs.h"
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#define NFSDBG_FACILITY NFSDBG_PROC
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/* A wrapper to handle the EJUKEBOX error messages */
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static int
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nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
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{
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int res;
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do {
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res = rpc_call_sync(clnt, msg, flags);
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if (res != -EJUKEBOX)
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break;
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freezable_schedule_timeout_killable_unsafe(NFS_JUKEBOX_RETRY_TIME);
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res = -ERESTARTSYS;
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} while (!fatal_signal_pending(current));
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return res;
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}
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#define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
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static int
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nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
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{
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if (task->tk_status != -EJUKEBOX)
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return 0;
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if (task->tk_status == -EJUKEBOX)
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nfs_inc_stats(inode, NFSIOS_DELAY);
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task->tk_status = 0;
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rpc_restart_call(task);
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rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
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return 1;
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}
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static int
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do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
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struct nfs_fsinfo *info)
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{
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
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.rpc_argp = fhandle,
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.rpc_resp = info,
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};
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int status;
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dprintk("%s: call fsinfo\n", __func__);
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nfs_fattr_init(info->fattr);
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status = rpc_call_sync(client, &msg, 0);
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dprintk("%s: reply fsinfo: %d\n", __func__, status);
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if (status == 0 && !(info->fattr->valid & NFS_ATTR_FATTR)) {
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msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
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msg.rpc_resp = info->fattr;
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status = rpc_call_sync(client, &msg, 0);
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dprintk("%s: reply getattr: %d\n", __func__, status);
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}
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return status;
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}
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/*
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* Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
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*/
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static int
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nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
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struct nfs_fsinfo *info)
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{
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int status;
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status = do_proc_get_root(server->client, fhandle, info);
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if (status && server->nfs_client->cl_rpcclient != server->client)
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status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
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return status;
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}
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/*
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* One function for each procedure in the NFS protocol.
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*/
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static int
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nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
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struct nfs_fattr *fattr, struct nfs4_label *label)
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{
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
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.rpc_argp = fhandle,
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.rpc_resp = fattr,
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};
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int status;
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dprintk("NFS call getattr\n");
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nfs_fattr_init(fattr);
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status = rpc_call_sync(server->client, &msg, 0);
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dprintk("NFS reply getattr: %d\n", status);
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return status;
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}
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static int
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nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
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struct iattr *sattr)
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{
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struct inode *inode = d_inode(dentry);
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struct nfs3_sattrargs arg = {
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.fh = NFS_FH(inode),
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.sattr = sattr,
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};
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
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.rpc_argp = &arg,
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.rpc_resp = fattr,
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};
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int status;
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dprintk("NFS call setattr\n");
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if (sattr->ia_valid & ATTR_FILE)
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msg.rpc_cred = nfs_file_cred(sattr->ia_file);
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nfs_fattr_init(fattr);
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status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
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if (status == 0)
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nfs_setattr_update_inode(inode, sattr, fattr);
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dprintk("NFS reply setattr: %d\n", status);
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return status;
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}
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static int
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nfs3_proc_lookup(struct inode *dir, const struct qstr *name,
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struct nfs_fh *fhandle, struct nfs_fattr *fattr,
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struct nfs4_label *label)
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{
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struct nfs3_diropargs arg = {
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.fh = NFS_FH(dir),
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.name = name->name,
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.len = name->len
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};
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struct nfs3_diropres res = {
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.fh = fhandle,
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.fattr = fattr
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};
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
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.rpc_argp = &arg,
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.rpc_resp = &res,
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};
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int status;
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dprintk("NFS call lookup %s\n", name->name);
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res.dir_attr = nfs_alloc_fattr();
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if (res.dir_attr == NULL)
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return -ENOMEM;
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nfs_fattr_init(fattr);
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status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
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nfs_refresh_inode(dir, res.dir_attr);
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if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
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msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
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msg.rpc_argp = fhandle;
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msg.rpc_resp = fattr;
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status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
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}
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nfs_free_fattr(res.dir_attr);
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dprintk("NFS reply lookup: %d\n", status);
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return status;
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}
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static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
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{
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struct nfs3_accessargs arg = {
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.fh = NFS_FH(inode),
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};
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struct nfs3_accessres res;
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
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.rpc_argp = &arg,
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.rpc_resp = &res,
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.rpc_cred = entry->cred,
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};
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int mode = entry->mask;
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int status = -ENOMEM;
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dprintk("NFS call access\n");
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if (mode & MAY_READ)
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arg.access |= NFS3_ACCESS_READ;
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if (S_ISDIR(inode->i_mode)) {
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if (mode & MAY_WRITE)
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arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
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if (mode & MAY_EXEC)
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arg.access |= NFS3_ACCESS_LOOKUP;
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} else {
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if (mode & MAY_WRITE)
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arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
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if (mode & MAY_EXEC)
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arg.access |= NFS3_ACCESS_EXECUTE;
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}
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res.fattr = nfs_alloc_fattr();
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if (res.fattr == NULL)
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goto out;
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status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
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nfs_refresh_inode(inode, res.fattr);
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if (status == 0)
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nfs_access_set_mask(entry, res.access);
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nfs_free_fattr(res.fattr);
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out:
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dprintk("NFS reply access: %d\n", status);
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return status;
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}
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static int nfs3_proc_readlink(struct inode *inode, struct page *page,
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unsigned int pgbase, unsigned int pglen)
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{
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struct nfs_fattr *fattr;
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struct nfs3_readlinkargs args = {
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.fh = NFS_FH(inode),
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.pgbase = pgbase,
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.pglen = pglen,
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.pages = &page
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};
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struct rpc_message msg = {
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.rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
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.rpc_argp = &args,
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};
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int status = -ENOMEM;
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dprintk("NFS call readlink\n");
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fattr = nfs_alloc_fattr();
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if (fattr == NULL)
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goto out;
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msg.rpc_resp = fattr;
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status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
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nfs_refresh_inode(inode, fattr);
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nfs_free_fattr(fattr);
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out:
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dprintk("NFS reply readlink: %d\n", status);
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return status;
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}
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struct nfs3_createdata {
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struct rpc_message msg;
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union {
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struct nfs3_createargs create;
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struct nfs3_mkdirargs mkdir;
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struct nfs3_symlinkargs symlink;
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struct nfs3_mknodargs mknod;
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} arg;
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struct nfs3_diropres res;
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struct nfs_fh fh;
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struct nfs_fattr fattr;
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struct nfs_fattr dir_attr;
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};
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static struct nfs3_createdata *nfs3_alloc_createdata(void)
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{
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struct nfs3_createdata *data;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (data != NULL) {
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data->msg.rpc_argp = &data->arg;
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data->msg.rpc_resp = &data->res;
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data->res.fh = &data->fh;
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data->res.fattr = &data->fattr;
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data->res.dir_attr = &data->dir_attr;
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nfs_fattr_init(data->res.fattr);
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nfs_fattr_init(data->res.dir_attr);
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}
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return data;
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}
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static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
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{
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int status;
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status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
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nfs_post_op_update_inode(dir, data->res.dir_attr);
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if (status == 0)
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status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL);
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return status;
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}
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static void nfs3_free_createdata(struct nfs3_createdata *data)
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{
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kfree(data);
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}
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/*
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* Create a regular file.
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*/
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static int
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nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
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int flags)
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{
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struct posix_acl *default_acl, *acl;
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struct nfs3_createdata *data;
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int status = -ENOMEM;
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dprintk("NFS call create %pd\n", dentry);
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data = nfs3_alloc_createdata();
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if (data == NULL)
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goto out;
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data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
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data->arg.create.fh = NFS_FH(dir);
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data->arg.create.name = dentry->d_name.name;
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data->arg.create.len = dentry->d_name.len;
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data->arg.create.sattr = sattr;
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data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
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if (flags & O_EXCL) {
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data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE;
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data->arg.create.verifier[0] = cpu_to_be32(jiffies);
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data->arg.create.verifier[1] = cpu_to_be32(current->pid);
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}
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status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
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if (status)
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goto out;
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for (;;) {
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status = nfs3_do_create(dir, dentry, data);
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if (status != -ENOTSUPP)
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break;
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/* If the server doesn't support the exclusive creation
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* semantics, try again with simple 'guarded' mode. */
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switch (data->arg.create.createmode) {
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case NFS3_CREATE_EXCLUSIVE:
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data->arg.create.createmode = NFS3_CREATE_GUARDED;
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break;
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case NFS3_CREATE_GUARDED:
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data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
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break;
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case NFS3_CREATE_UNCHECKED:
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goto out;
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}
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nfs_fattr_init(data->res.dir_attr);
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nfs_fattr_init(data->res.fattr);
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}
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if (status != 0)
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goto out_release_acls;
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/* When we created the file with exclusive semantics, make
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* sure we set the attributes afterwards. */
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if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
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dprintk("NFS call setattr (post-create)\n");
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if (!(sattr->ia_valid & ATTR_ATIME_SET))
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sattr->ia_valid |= ATTR_ATIME;
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if (!(sattr->ia_valid & ATTR_MTIME_SET))
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sattr->ia_valid |= ATTR_MTIME;
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/* Note: we could use a guarded setattr here, but I'm
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* not sure this buys us anything (and I'd have
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* to revamp the NFSv3 XDR code) */
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status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
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nfs_post_op_update_inode(d_inode(dentry), data->res.fattr);
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dprintk("NFS reply setattr (post-create): %d\n", status);
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if (status != 0)
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goto out_release_acls;
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}
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status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
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out_release_acls:
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posix_acl_release(acl);
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posix_acl_release(default_acl);
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out:
|
|
nfs3_free_createdata(data);
|
|
dprintk("NFS reply create: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_remove(struct inode *dir, const struct qstr *name)
|
|
{
|
|
struct nfs_removeargs arg = {
|
|
.fh = NFS_FH(dir),
|
|
.name = *name,
|
|
};
|
|
struct nfs_removeres res;
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &res,
|
|
};
|
|
int status = -ENOMEM;
|
|
|
|
dprintk("NFS call remove %s\n", name->name);
|
|
res.dir_attr = nfs_alloc_fattr();
|
|
if (res.dir_attr == NULL)
|
|
goto out;
|
|
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
nfs_post_op_update_inode(dir, res.dir_attr);
|
|
nfs_free_fattr(res.dir_attr);
|
|
out:
|
|
dprintk("NFS reply remove: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static void
|
|
nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
|
|
{
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
|
|
}
|
|
|
|
static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
|
|
{
|
|
rpc_call_start(task);
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
|
|
{
|
|
struct nfs_removeres *res;
|
|
if (nfs3_async_handle_jukebox(task, dir))
|
|
return 0;
|
|
res = task->tk_msg.rpc_resp;
|
|
nfs_post_op_update_inode(dir, res->dir_attr);
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
|
|
{
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
|
|
}
|
|
|
|
static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
|
|
{
|
|
rpc_call_start(task);
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
|
|
struct inode *new_dir)
|
|
{
|
|
struct nfs_renameres *res;
|
|
|
|
if (nfs3_async_handle_jukebox(task, old_dir))
|
|
return 0;
|
|
res = task->tk_msg.rpc_resp;
|
|
|
|
nfs_post_op_update_inode(old_dir, res->old_fattr);
|
|
nfs_post_op_update_inode(new_dir, res->new_fattr);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name)
|
|
{
|
|
struct nfs3_linkargs arg = {
|
|
.fromfh = NFS_FH(inode),
|
|
.tofh = NFS_FH(dir),
|
|
.toname = name->name,
|
|
.tolen = name->len
|
|
};
|
|
struct nfs3_linkres res;
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &res,
|
|
};
|
|
int status = -ENOMEM;
|
|
|
|
dprintk("NFS call link %s\n", name->name);
|
|
res.fattr = nfs_alloc_fattr();
|
|
res.dir_attr = nfs_alloc_fattr();
|
|
if (res.fattr == NULL || res.dir_attr == NULL)
|
|
goto out;
|
|
|
|
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
|
|
nfs_post_op_update_inode(dir, res.dir_attr);
|
|
nfs_post_op_update_inode(inode, res.fattr);
|
|
out:
|
|
nfs_free_fattr(res.dir_attr);
|
|
nfs_free_fattr(res.fattr);
|
|
dprintk("NFS reply link: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
|
|
unsigned int len, struct iattr *sattr)
|
|
{
|
|
struct nfs3_createdata *data;
|
|
int status = -ENOMEM;
|
|
|
|
if (len > NFS3_MAXPATHLEN)
|
|
return -ENAMETOOLONG;
|
|
|
|
dprintk("NFS call symlink %pd\n", dentry);
|
|
|
|
data = nfs3_alloc_createdata();
|
|
if (data == NULL)
|
|
goto out;
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
|
|
data->arg.symlink.fromfh = NFS_FH(dir);
|
|
data->arg.symlink.fromname = dentry->d_name.name;
|
|
data->arg.symlink.fromlen = dentry->d_name.len;
|
|
data->arg.symlink.pages = &page;
|
|
data->arg.symlink.pathlen = len;
|
|
data->arg.symlink.sattr = sattr;
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
|
|
|
nfs3_free_createdata(data);
|
|
out:
|
|
dprintk("NFS reply symlink: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
|
|
{
|
|
struct posix_acl *default_acl, *acl;
|
|
struct nfs3_createdata *data;
|
|
int status = -ENOMEM;
|
|
|
|
dprintk("NFS call mkdir %pd\n", dentry);
|
|
|
|
data = nfs3_alloc_createdata();
|
|
if (data == NULL)
|
|
goto out;
|
|
|
|
status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
|
|
if (status)
|
|
goto out;
|
|
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
|
|
data->arg.mkdir.fh = NFS_FH(dir);
|
|
data->arg.mkdir.name = dentry->d_name.name;
|
|
data->arg.mkdir.len = dentry->d_name.len;
|
|
data->arg.mkdir.sattr = sattr;
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
|
if (status != 0)
|
|
goto out_release_acls;
|
|
|
|
status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
|
|
|
|
out_release_acls:
|
|
posix_acl_release(acl);
|
|
posix_acl_release(default_acl);
|
|
out:
|
|
nfs3_free_createdata(data);
|
|
dprintk("NFS reply mkdir: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_rmdir(struct inode *dir, const struct qstr *name)
|
|
{
|
|
struct nfs_fattr *dir_attr;
|
|
struct nfs3_diropargs arg = {
|
|
.fh = NFS_FH(dir),
|
|
.name = name->name,
|
|
.len = name->len
|
|
};
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
|
|
.rpc_argp = &arg,
|
|
};
|
|
int status = -ENOMEM;
|
|
|
|
dprintk("NFS call rmdir %s\n", name->name);
|
|
dir_attr = nfs_alloc_fattr();
|
|
if (dir_attr == NULL)
|
|
goto out;
|
|
|
|
msg.rpc_resp = dir_attr;
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
nfs_post_op_update_inode(dir, dir_attr);
|
|
nfs_free_fattr(dir_attr);
|
|
out:
|
|
dprintk("NFS reply rmdir: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* The READDIR implementation is somewhat hackish - we pass the user buffer
|
|
* to the encode function, which installs it in the receive iovec.
|
|
* The decode function itself doesn't perform any decoding, it just makes
|
|
* sure the reply is syntactically correct.
|
|
*
|
|
* Also note that this implementation handles both plain readdir and
|
|
* readdirplus.
|
|
*/
|
|
static int
|
|
nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
|
|
u64 cookie, struct page **pages, unsigned int count, bool plus)
|
|
{
|
|
struct inode *dir = d_inode(dentry);
|
|
__be32 *verf = NFS_I(dir)->cookieverf;
|
|
struct nfs3_readdirargs arg = {
|
|
.fh = NFS_FH(dir),
|
|
.cookie = cookie,
|
|
.verf = {verf[0], verf[1]},
|
|
.plus = plus,
|
|
.count = count,
|
|
.pages = pages
|
|
};
|
|
struct nfs3_readdirres res = {
|
|
.verf = verf,
|
|
.plus = plus
|
|
};
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
|
|
.rpc_argp = &arg,
|
|
.rpc_resp = &res,
|
|
.rpc_cred = cred
|
|
};
|
|
int status = -ENOMEM;
|
|
|
|
if (plus)
|
|
msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
|
|
|
|
dprintk("NFS call readdir%s %d\n",
|
|
plus? "plus" : "", (unsigned int) cookie);
|
|
|
|
res.dir_attr = nfs_alloc_fattr();
|
|
if (res.dir_attr == NULL)
|
|
goto out;
|
|
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
|
|
nfs_invalidate_atime(dir);
|
|
nfs_refresh_inode(dir, res.dir_attr);
|
|
|
|
nfs_free_fattr(res.dir_attr);
|
|
out:
|
|
dprintk("NFS reply readdir%s: %d\n",
|
|
plus? "plus" : "", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
|
|
dev_t rdev)
|
|
{
|
|
struct posix_acl *default_acl, *acl;
|
|
struct nfs3_createdata *data;
|
|
int status = -ENOMEM;
|
|
|
|
dprintk("NFS call mknod %pd %u:%u\n", dentry,
|
|
MAJOR(rdev), MINOR(rdev));
|
|
|
|
data = nfs3_alloc_createdata();
|
|
if (data == NULL)
|
|
goto out;
|
|
|
|
status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
|
|
if (status)
|
|
goto out;
|
|
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
|
|
data->arg.mknod.fh = NFS_FH(dir);
|
|
data->arg.mknod.name = dentry->d_name.name;
|
|
data->arg.mknod.len = dentry->d_name.len;
|
|
data->arg.mknod.sattr = sattr;
|
|
data->arg.mknod.rdev = rdev;
|
|
|
|
switch (sattr->ia_mode & S_IFMT) {
|
|
case S_IFBLK:
|
|
data->arg.mknod.type = NF3BLK;
|
|
break;
|
|
case S_IFCHR:
|
|
data->arg.mknod.type = NF3CHR;
|
|
break;
|
|
case S_IFIFO:
|
|
data->arg.mknod.type = NF3FIFO;
|
|
break;
|
|
case S_IFSOCK:
|
|
data->arg.mknod.type = NF3SOCK;
|
|
break;
|
|
default:
|
|
status = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
|
if (status != 0)
|
|
goto out_release_acls;
|
|
|
|
status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
|
|
|
|
out_release_acls:
|
|
posix_acl_release(acl);
|
|
posix_acl_release(default_acl);
|
|
out:
|
|
nfs3_free_createdata(data);
|
|
dprintk("NFS reply mknod: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
struct nfs_fsstat *stat)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
|
|
.rpc_argp = fhandle,
|
|
.rpc_resp = stat,
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call fsstat\n");
|
|
nfs_fattr_init(stat->fattr);
|
|
status = rpc_call_sync(server->client, &msg, 0);
|
|
dprintk("NFS reply fsstat: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
|
|
struct nfs_fsinfo *info)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
|
|
.rpc_argp = fhandle,
|
|
.rpc_resp = info,
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call fsinfo\n");
|
|
nfs_fattr_init(info->fattr);
|
|
status = rpc_call_sync(client, &msg, 0);
|
|
dprintk("NFS reply fsinfo: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
|
|
* nfs_create_server
|
|
*/
|
|
static int
|
|
nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
struct nfs_fsinfo *info)
|
|
{
|
|
int status;
|
|
|
|
status = do_proc_fsinfo(server->client, fhandle, info);
|
|
if (status && server->nfs_client->cl_rpcclient != server->client)
|
|
status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
|
|
return status;
|
|
}
|
|
|
|
static int
|
|
nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
struct nfs_pathconf *info)
|
|
{
|
|
struct rpc_message msg = {
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
|
|
.rpc_argp = fhandle,
|
|
.rpc_resp = info,
|
|
};
|
|
int status;
|
|
|
|
dprintk("NFS call pathconf\n");
|
|
nfs_fattr_init(info->fattr);
|
|
status = rpc_call_sync(server->client, &msg, 0);
|
|
dprintk("NFS reply pathconf: %d\n", status);
|
|
return status;
|
|
}
|
|
|
|
static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
|
|
{
|
|
struct inode *inode = hdr->inode;
|
|
|
|
if (hdr->pgio_done_cb != NULL)
|
|
return hdr->pgio_done_cb(task, hdr);
|
|
|
|
if (nfs3_async_handle_jukebox(task, inode))
|
|
return -EAGAIN;
|
|
|
|
nfs_invalidate_atime(inode);
|
|
nfs_refresh_inode(inode, &hdr->fattr);
|
|
return 0;
|
|
}
|
|
|
|
static void nfs3_proc_read_setup(struct nfs_pgio_header *hdr,
|
|
struct rpc_message *msg)
|
|
{
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
|
|
}
|
|
|
|
static int nfs3_proc_pgio_rpc_prepare(struct rpc_task *task,
|
|
struct nfs_pgio_header *hdr)
|
|
{
|
|
rpc_call_start(task);
|
|
return 0;
|
|
}
|
|
|
|
static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
|
|
{
|
|
struct inode *inode = hdr->inode;
|
|
|
|
if (hdr->pgio_done_cb != NULL)
|
|
return hdr->pgio_done_cb(task, hdr);
|
|
|
|
if (nfs3_async_handle_jukebox(task, inode))
|
|
return -EAGAIN;
|
|
if (task->tk_status >= 0)
|
|
nfs_writeback_update_inode(hdr);
|
|
return 0;
|
|
}
|
|
|
|
static void nfs3_proc_write_setup(struct nfs_pgio_header *hdr,
|
|
struct rpc_message *msg)
|
|
{
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
|
|
}
|
|
|
|
static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
|
|
{
|
|
rpc_call_start(task);
|
|
}
|
|
|
|
static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
|
|
{
|
|
if (data->commit_done_cb != NULL)
|
|
return data->commit_done_cb(task, data);
|
|
|
|
if (nfs3_async_handle_jukebox(task, data->inode))
|
|
return -EAGAIN;
|
|
nfs_refresh_inode(data->inode, data->res.fattr);
|
|
return 0;
|
|
}
|
|
|
|
static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg)
|
|
{
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
|
|
}
|
|
|
|
static void nfs3_nlm_alloc_call(void *data)
|
|
{
|
|
struct nfs_lock_context *l_ctx = data;
|
|
if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
|
|
get_nfs_open_context(l_ctx->open_context);
|
|
nfs_get_lock_context(l_ctx->open_context);
|
|
}
|
|
}
|
|
|
|
static bool nfs3_nlm_unlock_prepare(struct rpc_task *task, void *data)
|
|
{
|
|
struct nfs_lock_context *l_ctx = data;
|
|
if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags))
|
|
return nfs_async_iocounter_wait(task, l_ctx);
|
|
return false;
|
|
|
|
}
|
|
|
|
static void nfs3_nlm_release_call(void *data)
|
|
{
|
|
struct nfs_lock_context *l_ctx = data;
|
|
struct nfs_open_context *ctx;
|
|
if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
|
|
ctx = l_ctx->open_context;
|
|
nfs_put_lock_context(l_ctx);
|
|
put_nfs_open_context(ctx);
|
|
}
|
|
}
|
|
|
|
const struct nlmclnt_operations nlmclnt_fl_close_lock_ops = {
|
|
.nlmclnt_alloc_call = nfs3_nlm_alloc_call,
|
|
.nlmclnt_unlock_prepare = nfs3_nlm_unlock_prepare,
|
|
.nlmclnt_release_call = nfs3_nlm_release_call,
|
|
};
|
|
|
|
static int
|
|
nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
|
|
{
|
|
struct inode *inode = file_inode(filp);
|
|
struct nfs_lock_context *l_ctx = NULL;
|
|
struct nfs_open_context *ctx = nfs_file_open_context(filp);
|
|
int status;
|
|
|
|
if (fl->fl_flags & FL_CLOSE) {
|
|
l_ctx = nfs_get_lock_context(ctx);
|
|
if (IS_ERR(l_ctx))
|
|
l_ctx = NULL;
|
|
else
|
|
set_bit(NFS_CONTEXT_UNLOCK, &ctx->flags);
|
|
}
|
|
|
|
status = nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, l_ctx);
|
|
|
|
if (l_ctx)
|
|
nfs_put_lock_context(l_ctx);
|
|
|
|
return status;
|
|
}
|
|
|
|
static int nfs3_have_delegation(struct inode *inode, fmode_t flags)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int nfs3_return_delegation(struct inode *inode)
|
|
{
|
|
nfs_wb_all(inode);
|
|
return 0;
|
|
}
|
|
|
|
static const struct inode_operations nfs3_dir_inode_operations = {
|
|
.create = nfs_create,
|
|
.lookup = nfs_lookup,
|
|
.link = nfs_link,
|
|
.unlink = nfs_unlink,
|
|
.symlink = nfs_symlink,
|
|
.mkdir = nfs_mkdir,
|
|
.rmdir = nfs_rmdir,
|
|
.mknod = nfs_mknod,
|
|
.rename = nfs_rename,
|
|
.permission = nfs_permission,
|
|
.getattr = nfs_getattr,
|
|
.setattr = nfs_setattr,
|
|
#ifdef CONFIG_NFS_V3_ACL
|
|
.listxattr = nfs3_listxattr,
|
|
.get_acl = nfs3_get_acl,
|
|
.set_acl = nfs3_set_acl,
|
|
#endif
|
|
};
|
|
|
|
static const struct inode_operations nfs3_file_inode_operations = {
|
|
.permission = nfs_permission,
|
|
.getattr = nfs_getattr,
|
|
.setattr = nfs_setattr,
|
|
#ifdef CONFIG_NFS_V3_ACL
|
|
.listxattr = nfs3_listxattr,
|
|
.get_acl = nfs3_get_acl,
|
|
.set_acl = nfs3_set_acl,
|
|
#endif
|
|
};
|
|
|
|
const struct nfs_rpc_ops nfs_v3_clientops = {
|
|
.version = 3, /* protocol version */
|
|
.dentry_ops = &nfs_dentry_operations,
|
|
.dir_inode_ops = &nfs3_dir_inode_operations,
|
|
.file_inode_ops = &nfs3_file_inode_operations,
|
|
.file_ops = &nfs_file_operations,
|
|
.nlmclnt_ops = &nlmclnt_fl_close_lock_ops,
|
|
.getroot = nfs3_proc_get_root,
|
|
.submount = nfs_submount,
|
|
.try_mount = nfs_try_mount,
|
|
.getattr = nfs3_proc_getattr,
|
|
.setattr = nfs3_proc_setattr,
|
|
.lookup = nfs3_proc_lookup,
|
|
.access = nfs3_proc_access,
|
|
.readlink = nfs3_proc_readlink,
|
|
.create = nfs3_proc_create,
|
|
.remove = nfs3_proc_remove,
|
|
.unlink_setup = nfs3_proc_unlink_setup,
|
|
.unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare,
|
|
.unlink_done = nfs3_proc_unlink_done,
|
|
.rename_setup = nfs3_proc_rename_setup,
|
|
.rename_rpc_prepare = nfs3_proc_rename_rpc_prepare,
|
|
.rename_done = nfs3_proc_rename_done,
|
|
.link = nfs3_proc_link,
|
|
.symlink = nfs3_proc_symlink,
|
|
.mkdir = nfs3_proc_mkdir,
|
|
.rmdir = nfs3_proc_rmdir,
|
|
.readdir = nfs3_proc_readdir,
|
|
.mknod = nfs3_proc_mknod,
|
|
.statfs = nfs3_proc_statfs,
|
|
.fsinfo = nfs3_proc_fsinfo,
|
|
.pathconf = nfs3_proc_pathconf,
|
|
.decode_dirent = nfs3_decode_dirent,
|
|
.pgio_rpc_prepare = nfs3_proc_pgio_rpc_prepare,
|
|
.read_setup = nfs3_proc_read_setup,
|
|
.read_done = nfs3_read_done,
|
|
.write_setup = nfs3_proc_write_setup,
|
|
.write_done = nfs3_write_done,
|
|
.commit_setup = nfs3_proc_commit_setup,
|
|
.commit_rpc_prepare = nfs3_proc_commit_rpc_prepare,
|
|
.commit_done = nfs3_commit_done,
|
|
.lock = nfs3_proc_lock,
|
|
.clear_acl_cache = forget_all_cached_acls,
|
|
.close_context = nfs_close_context,
|
|
.have_delegation = nfs3_have_delegation,
|
|
.return_delegation = nfs3_return_delegation,
|
|
.alloc_client = nfs_alloc_client,
|
|
.init_client = nfs_init_client,
|
|
.free_client = nfs_free_client,
|
|
.create_server = nfs3_create_server,
|
|
.clone_server = nfs3_clone_server,
|
|
};
|