184 lines
6.1 KiB
C
184 lines
6.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
|
|
*/
|
|
|
|
#ifndef LINUX_NFSD_VFS_H
|
|
#define LINUX_NFSD_VFS_H
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/posix_acl.h>
|
|
#include "nfsfh.h"
|
|
#include "nfsd.h"
|
|
|
|
/*
|
|
* Flags for nfsd_permission
|
|
*/
|
|
#define NFSD_MAY_NOP 0
|
|
#define NFSD_MAY_EXEC 0x001 /* == MAY_EXEC */
|
|
#define NFSD_MAY_WRITE 0x002 /* == MAY_WRITE */
|
|
#define NFSD_MAY_READ 0x004 /* == MAY_READ */
|
|
#define NFSD_MAY_SATTR 0x008
|
|
#define NFSD_MAY_TRUNC 0x010
|
|
#define NFSD_MAY_LOCK 0x020
|
|
#define NFSD_MAY_MASK 0x03f
|
|
|
|
/* extra hints to permission and open routines: */
|
|
#define NFSD_MAY_OWNER_OVERRIDE 0x040
|
|
#define NFSD_MAY_LOCAL_ACCESS 0x080 /* for device special files */
|
|
#define NFSD_MAY_BYPASS_GSS_ON_ROOT 0x100
|
|
#define NFSD_MAY_NOT_BREAK_LEASE 0x200
|
|
#define NFSD_MAY_BYPASS_GSS 0x400
|
|
#define NFSD_MAY_READ_IF_EXEC 0x800
|
|
|
|
#define NFSD_MAY_64BIT_COOKIE 0x1000 /* 64 bit readdir cookies for >= NFSv3 */
|
|
|
|
#define NFSD_MAY_CREATE (NFSD_MAY_EXEC|NFSD_MAY_WRITE)
|
|
#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)
|
|
|
|
struct nfsd_file;
|
|
|
|
/*
|
|
* Callback function for readdir
|
|
*/
|
|
typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
|
|
|
|
/* nfsd/vfs.c */
|
|
struct nfsd_attrs {
|
|
struct iattr *na_iattr; /* input */
|
|
struct xdr_netobj *na_seclabel; /* input */
|
|
struct posix_acl *na_pacl; /* input */
|
|
struct posix_acl *na_dpacl; /* input */
|
|
|
|
int na_labelerr; /* output */
|
|
int na_aclerr; /* output */
|
|
};
|
|
|
|
static inline void nfsd_attrs_free(struct nfsd_attrs *attrs)
|
|
{
|
|
posix_acl_release(attrs->na_pacl);
|
|
posix_acl_release(attrs->na_dpacl);
|
|
}
|
|
|
|
__be32 nfserrno (int errno);
|
|
int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
|
|
struct svc_export **expp);
|
|
__be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *,
|
|
const char *, unsigned int, struct svc_fh *);
|
|
__be32 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,
|
|
const char *, unsigned int,
|
|
struct svc_export **, struct dentry **);
|
|
__be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *,
|
|
struct nfsd_attrs *, int, time64_t);
|
|
int nfsd_mountpoint(struct dentry *, struct svc_export *);
|
|
#ifdef CONFIG_NFSD_V4
|
|
__be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *,
|
|
struct file *, loff_t, loff_t, int);
|
|
__be32 nfsd4_clone_file_range(struct svc_rqst *rqstp,
|
|
struct nfsd_file *nf_src, u64 src_pos,
|
|
struct nfsd_file *nf_dst, u64 dst_pos,
|
|
u64 count, bool sync);
|
|
#endif /* CONFIG_NFSD_V4 */
|
|
__be32 nfsd_create_locked(struct svc_rqst *, struct svc_fh *,
|
|
struct nfsd_attrs *attrs, int type, dev_t rdev,
|
|
struct svc_fh *res);
|
|
__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
|
|
char *name, int len, struct nfsd_attrs *attrs,
|
|
int type, dev_t rdev, struct svc_fh *res);
|
|
__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
|
|
__be32 nfsd_create_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|
struct svc_fh *resfhp, struct nfsd_attrs *iap);
|
|
__be32 nfsd_commit(struct svc_rqst *rqst, struct svc_fh *fhp,
|
|
struct nfsd_file *nf, u64 offset, u32 count,
|
|
__be32 *verf);
|
|
#ifdef CONFIG_NFSD_V4
|
|
__be32 nfsd_getxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|
char *name, void **bufp, int *lenp);
|
|
__be32 nfsd_listxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|
char **bufp, int *lenp);
|
|
__be32 nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|
char *name);
|
|
__be32 nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|
char *name, void *buf, u32 len, u32 flags);
|
|
#endif
|
|
int nfsd_open_break_lease(struct inode *, int);
|
|
__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
|
|
int, struct file **);
|
|
__be32 nfsd_open_verified(struct svc_rqst *, struct svc_fh *,
|
|
int, struct file **);
|
|
__be32 nfsd_splice_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|
struct file *file, loff_t offset,
|
|
unsigned long *count,
|
|
u32 *eof);
|
|
__be32 nfsd_iter_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|
struct file *file, loff_t offset,
|
|
unsigned long *count, unsigned int base,
|
|
u32 *eof);
|
|
__be32 nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|
loff_t offset, unsigned long *count,
|
|
u32 *eof);
|
|
__be32 nfsd_write(struct svc_rqst *, struct svc_fh *, loff_t,
|
|
struct kvec *, int, unsigned long *,
|
|
int stable, __be32 *verf);
|
|
__be32 nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|
struct nfsd_file *nf, loff_t offset,
|
|
struct kvec *vec, int vlen, unsigned long *cnt,
|
|
int stable, __be32 *verf);
|
|
__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *,
|
|
char *, int *);
|
|
__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *,
|
|
char *name, int len, char *path,
|
|
struct nfsd_attrs *attrs,
|
|
struct svc_fh *res);
|
|
__be32 nfsd_link(struct svc_rqst *, struct svc_fh *,
|
|
char *, int, struct svc_fh *);
|
|
ssize_t nfsd_copy_file_range(struct file *, u64,
|
|
struct file *, u64, u64);
|
|
__be32 nfsd_rename(struct svc_rqst *,
|
|
struct svc_fh *, char *, int,
|
|
struct svc_fh *, char *, int);
|
|
__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
|
|
char *name, int len);
|
|
__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
|
|
loff_t *, struct readdir_cd *, nfsd_filldir_t);
|
|
__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
|
|
struct kstatfs *, int access);
|
|
|
|
__be32 nfsd_permission(struct svc_rqst *, struct svc_export *,
|
|
struct dentry *, int);
|
|
|
|
static inline int fh_want_write(struct svc_fh *fh)
|
|
{
|
|
int ret;
|
|
|
|
if (fh->fh_want_write)
|
|
return 0;
|
|
ret = mnt_want_write(fh->fh_export->ex_path.mnt);
|
|
if (!ret)
|
|
fh->fh_want_write = true;
|
|
return ret;
|
|
}
|
|
|
|
static inline void fh_drop_write(struct svc_fh *fh)
|
|
{
|
|
if (fh->fh_want_write) {
|
|
fh->fh_want_write = false;
|
|
mnt_drop_write(fh->fh_export->ex_path.mnt);
|
|
}
|
|
}
|
|
|
|
static inline __be32 fh_getattr(const struct svc_fh *fh, struct kstat *stat)
|
|
{
|
|
u32 request_mask = STATX_BASIC_STATS;
|
|
struct path p = {.mnt = fh->fh_export->ex_path.mnt,
|
|
.dentry = fh->fh_dentry};
|
|
|
|
if (fh->fh_maxsize == NFS4_FHSIZE)
|
|
request_mask |= (STATX_BTIME | STATX_CHANGE_COOKIE);
|
|
|
|
return nfserrno(vfs_getattr(&p, stat, request_mask,
|
|
AT_STATX_SYNC_AS_STAT));
|
|
}
|
|
|
|
#endif /* LINUX_NFSD_VFS_H */
|