linux/fs/nfsd/nfsproc.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Process version 2 NFS requests.
 *
 * Copyright (C) 1995-1997 Olaf Kirch <[email protected]>
 */

#include <linux/namei.h>

#include "cache.h"
#include "xdr.h"
#include "vfs.h"

#define NFSDDBG_FACILITY …

static __be32
nfsd_proc_null(struct svc_rqst *rqstp)
{ … }

/*
 * Get a file's attributes
 * N.B. After this call resp->fh needs an fh_put
 */
static __be32
nfsd_proc_getattr(struct svc_rqst *rqstp)
{ … }

/*
 * Set a file's attributes
 * N.B. After this call resp->fh needs an fh_put
 */
static __be32
nfsd_proc_setattr(struct svc_rqst *rqstp)
{ … }

/* Obsolete, replaced by MNTPROC_MNT. */
static __be32
nfsd_proc_root(struct svc_rqst *rqstp)
{ … }

/*
 * Look up a path name component
 * Note: the dentry in the resp->fh may be negative if the file
 * doesn't exist yet.
 * N.B. After this call resp->fh needs an fh_put
 */
static __be32
nfsd_proc_lookup(struct svc_rqst *rqstp)
{ … }

/*
 * Read a symlink.
 */
static __be32
nfsd_proc_readlink(struct svc_rqst *rqstp)
{ … }

/*
 * Read a portion of a file.
 * N.B. After this call resp->fh needs an fh_put
 */
static __be32
nfsd_proc_read(struct svc_rqst *rqstp)
{ … }

/* Reserved */
static __be32
nfsd_proc_writecache(struct svc_rqst *rqstp)
{ … }

/*
 * Write data to a file
 * N.B. After this call resp->fh needs an fh_put
 */
static __be32
nfsd_proc_write(struct svc_rqst *rqstp)
{ … }

/*
 * CREATE processing is complicated. The keyword here is `overloaded.'
 * The parent directory is kept locked between the check for existence
 * and the actual create() call in compliance with VFS protocols.
 * N.B. After this call _both_ argp->fh and resp->fh need an fh_put
 */
static __be32
nfsd_proc_create(struct svc_rqst *rqstp)
{ … }

static __be32
nfsd_proc_remove(struct svc_rqst *rqstp)
{ … }

static __be32
nfsd_proc_rename(struct svc_rqst *rqstp)
{ … }

static __be32
nfsd_proc_link(struct svc_rqst *rqstp)
{ … }

static __be32
nfsd_proc_symlink(struct svc_rqst *rqstp)
{ … }

/*
 * Make directory. This operation is not idempotent.
 * N.B. After this call resp->fh needs an fh_put
 */
static __be32
nfsd_proc_mkdir(struct svc_rqst *rqstp)
{ … }

/*
 * Remove a directory
 */
static __be32
nfsd_proc_rmdir(struct svc_rqst *rqstp)
{ … }

static void nfsd_init_dirlist_pages(struct svc_rqst *rqstp,
				    struct nfsd_readdirres *resp,
				    u32 count)
{ … }

/*
 * Read a portion of a directory.
 */
static __be32
nfsd_proc_readdir(struct svc_rqst *rqstp)
{ … }

/*
 * Get file system info
 */
static __be32
nfsd_proc_statfs(struct svc_rqst *rqstp)
{ … }

/*
 * NFSv2 Server procedures.
 * Only the results of non-idempotent operations are cached.
 */

#define ST …
#define FH …
#define AT …

static const struct svc_procedure nfsd_procedures2[18] = …;

static DEFINE_PER_CPU_ALIGNED(unsigned long,
			      nfsd_count2[ARRAY_SIZE(nfsd_procedures2)]);
const struct svc_version nfsd_version2 = …;