0b233b7c79
Pull nfsd updates from Bruce Fields:
"A comparatively quieter cycle for nfsd this time, but still with two
larger changes:
- RPC server scalability improvements from Jeff Layton (using RCU
instead of a spinlock to find idle threads).
- server-side NFSv4.2 ALLOCATE/DEALLOCATE support from Anna
Schumaker, enabling fallocate on new clients"
* 'for-3.19' of git://linux-nfs.org/~bfields/linux: (32 commits)
nfsd4: fix xdr4 count of server in fs_location4
nfsd4: fix xdr4 inclusion of escaped char
sunrpc/cache: convert to use string_escape_str()
sunrpc: only call test_bit once in svc_xprt_received
fs: nfsd: Fix signedness bug in compare_blob
sunrpc: add some tracepoints around enqueue and dequeue of svc_xprt
sunrpc: convert to lockless lookup of queued server threads
sunrpc: fix potential races in pool_stats collection
sunrpc: add a rcu_head to svc_rqst and use kfree_rcu to free it
sunrpc: require svc_create callers to pass in meaningful shutdown routine
sunrpc: have svc_wake_up only deal with pool 0
sunrpc: convert sp_task_pending flag to use atomic bitops
sunrpc: move rq_cachetype field to better optimize space
sunrpc: move rq_splice_ok flag into rq_flags
sunrpc: move rq_dropme flag into rq_flags
sunrpc: move rq_usedeferral flag to rq_flags
sunrpc: move rq_local field to rq_flags
sunrpc: add a generic rq_flags field to svc_rqst and move rq_secure to it
nfsd: minor off by one checks in __write_versions()
sunrpc: release svc_pool_map reference when serv allocation fails
...
131 lines
4.5 KiB
C
131 lines
4.5 KiB
C
/*
|
|
* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
|
|
*/
|
|
|
|
#ifndef LINUX_NFSD_VFS_H
|
|
#define LINUX_NFSD_VFS_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)
|
|
|
|
/*
|
|
* Callback function for readdir
|
|
*/
|
|
typedef int (*nfsd_filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
|
|
|
|
/* nfsd/vfs.c */
|
|
int nfsd_racache_init(int);
|
|
void nfsd_racache_shutdown(void);
|
|
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 iattr *, int, time_t);
|
|
int nfsd_mountpoint(struct dentry *, struct svc_export *);
|
|
#ifdef CONFIG_NFSD_V4
|
|
__be32 nfsd4_set_nfs4_label(struct svc_rqst *, struct svc_fh *,
|
|
struct xdr_netobj *);
|
|
__be32 nfsd4_vfs_fallocate(struct svc_rqst *, struct svc_fh *,
|
|
struct file *, loff_t, loff_t, int);
|
|
#endif /* CONFIG_NFSD_V4 */
|
|
__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
|
|
char *name, int len, struct iattr *attrs,
|
|
int type, dev_t rdev, struct svc_fh *res);
|
|
#ifdef CONFIG_NFSD_V3
|
|
__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
|
|
__be32 do_nfsd_create(struct svc_rqst *, struct svc_fh *,
|
|
char *name, int len, struct iattr *attrs,
|
|
struct svc_fh *res, int createmode,
|
|
u32 *verifier, bool *truncp, bool *created);
|
|
__be32 nfsd_commit(struct svc_rqst *, struct svc_fh *,
|
|
loff_t, unsigned long);
|
|
#endif /* CONFIG_NFSD_V3 */
|
|
__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, umode_t,
|
|
int, struct file **);
|
|
void nfsd_close(struct file *);
|
|
struct raparms;
|
|
__be32 nfsd_get_tmp_read_open(struct svc_rqst *, struct svc_fh *,
|
|
struct file **, struct raparms **);
|
|
void nfsd_put_tmp_read_open(struct file *, struct raparms *);
|
|
__be32 nfsd_splice_read(struct svc_rqst *,
|
|
struct file *, loff_t, unsigned long *);
|
|
__be32 nfsd_readv(struct file *, loff_t, struct kvec *, int,
|
|
unsigned long *);
|
|
__be32 nfsd_read(struct svc_rqst *, struct svc_fh *,
|
|
loff_t, struct kvec *, int, unsigned long *);
|
|
__be32 nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
|
|
loff_t, struct kvec *,int, unsigned long *, int *);
|
|
__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 svc_fh *res);
|
|
__be32 nfsd_link(struct svc_rqst *, struct svc_fh *,
|
|
char *, int, struct svc_fh *);
|
|
__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 = mnt_want_write(fh->fh_export->ex_path.mnt);
|
|
|
|
if (!ret)
|
|
fh->fh_want_write = 1;
|
|
return ret;
|
|
}
|
|
|
|
static inline void fh_drop_write(struct svc_fh *fh)
|
|
{
|
|
if (fh->fh_want_write) {
|
|
fh->fh_want_write = 0;
|
|
mnt_drop_write(fh->fh_export->ex_path.mnt);
|
|
}
|
|
}
|
|
|
|
static inline __be32 fh_getattr(struct svc_fh *fh, struct kstat *stat)
|
|
{
|
|
struct path p = {.mnt = fh->fh_export->ex_path.mnt,
|
|
.dentry = fh->fh_dentry};
|
|
return nfserrno(vfs_getattr(&p, stat));
|
|
}
|
|
|
|
#endif /* LINUX_NFSD_VFS_H */
|